Dissertationen zum Thema „Shakkō“
Um die anderen Arten von Veröffentlichungen zu diesem Thema anzuzeigen, folgen Sie diesem Link: Shakkō.
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Machen Sie sich mit Top-50 Dissertationen für die Forschung zum Thema "Shakkō" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Sehen Sie die Dissertationen für verschiedene Spezialgebieten durch und erstellen Sie Ihre Bibliographie auf korrekte Weise.
1
Queiroz, Nuno. „Diving behaviour, movement patterns and population structure of blue sharks, Prionace glauca (L. 1758) in the North-east Atlantic“. Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158318.
Der volle Inhalt der QuelleAnnotation:
This project provided an exceptional opportunity to describe diving behaviour, movements and to characterise critical habitats of blue sharks in the North-eastern Atlantic using satellite and archival telemetry. Tracked blue sharks displayed southward movements away from the tagging areas, exhibiting pronounced site fidelity to localised high-productivity frontal regions. Blue sharks also displayed a high degree of variability in vertical movements. Shifts in diving behaviour were detected both within and between individuals, whereas behavioural phases were linked to the thermal structure of the water column in coastal areas, and to changes in prey distribution or type in offshore regions. High resolution data showed that blue sharks shift between Brownian (in productive habitats) and Lévy (less productive waters) behaviours. Vertical movements ranged from the surface to 1160 m, and water temperatures varied between 7.2-27.2°C. Behavioural data was also crucial in determining the degree of spatial and temporal overlap, and thus vulnerability, between blue sharks and high-seas longliners. Confirmed fishing mortality was ~11% with four tagged sharks caught by surface longliners. Simulations showed that boats/sharks overlap was higher in winter and early spring, with the majority of simulated sharks (~88%) at risk at least one day year-1. Our results indicate that, depending on which geographical regions are occupied at specific times, different segments of the blue shark population face differential risk from longlines. Sequencing of mitochondrial DNA suggested an absence of spatial genetic differentiation throughout the North Atlantic, providing strong evidence that blue sharks comprise a single population in this region.
2
Andreev, Plamen Stanislavov. „The early evolutionary history of sharks and shark-like fishes“. Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5491/.
Der volle Inhalt der QuelleAnnotation:
The Middle Ordovician to Late Silurian represents an interval of approximately 50 million years, which has been recognised as the initial, cryptic, period in the evolutionary history of chondrichthyan fish. The fossil remains attributed to early chondrichthyans are dominated by isolated dermal scales that predate the appearance of undisputed chondrichthyan teeth and articulated skeletons in the Lower Devonian. Investigation of the inter-relationships of these scale taxa and their systematic position relative to high- ranked chondrichthyan clades has been hampered by the lack of developed scale-based classification schemes for jawed gnathostomes, coupled with the limited use of scale characters in phylogenetic studies of Palaeozoic Chondrichthyes. Here, all previously documented scale types of alleged Lower Palaeozoic chondrichthyans were examined using a combination of X-ray microtomography, SEM and Nomarski DIC optics. These were found to exhibit a set of characteristics (symmetrical trunk scales, areal crown growth and lack of hard-tissue resorption, cancellous bone and enamel) recognised as specific to the dermal skeleton of chondrichthyans among derived gnathostomes. The collected data permitted the establishment of a hierarchy of scale characters for separate taxonomic ranks, leading to the recognition of three Orders (Mongolepidida, Elegestolepida ordo nov. and Altholepida ordo nov.) of early chondrichthyans, differentiated by distinct types of scale-crown morphogenesis. A scale-based cladistic analysis of jawed gnathostomes corroborated these results by recovering a chondrichthyan clade that incorporates all examined taxa and ‘acanthodians’ with non-superpositional crown growth patterns. It is thus proposed that chondrichthyan dermoskeletal characters carry a phylogenetic signal, allowing to interpret the documented diverse types of scale morphogenesis as evidence for a major radiation of chondrichthyan lineages in the Lower Palaeozoic.
3
O'Bryhim, Jason. „Public knowledge, attitudes, and behavior towards sharks and shark conservation“. Fairfax, VA : George Mason University, 2009. http://hdl.handle.net/1920/4571.
Der volle Inhalt der QuelleAnnotation:
Thesis (M.S.)--George Mason University, 2009.Vita: p. 127. Thesis director: Chris Parsons. Submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Science and Policy. Title from PDF t.p. (viewed Oct. 11, 2009). Includes bibliographical references (p. 121-126). Also issued in print.
4
Filmalter, John David. „Movements of sub-adult sicklefin lemon sharks Negaprion acutidens in a remote Indian Ocean atoll“. Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1018229.
Der volle Inhalt der QuelleAnnotation:
The sicklefin lemon shark Negaprion acutidens is a large-bodied (> 3m) coastal shark species, widely distributed in tropical and sub-tropical Indo-Pacific waters. Despite its large size and wide distribution, very little is known about its movement behaviour throughout ontogeny. The primary aim of this thesis was to gain an understanding of the movements of sub-adult N. acutidens, in and around the St. Joseph Atoll, Republic of Seychelles, to facilitate the effective conservation of this vulnerable species. A total of 22 sharks (139 – 202 cm TL) were equipped with coded acoustic transmitters and passively monitored using moored acoustic receivers for a period of 20 month from March 2009 to October 2010. The use of passive acoustic telemetry arrays to study behavioural ecology has increased in popularity in recent years and been successfully applied to study a host of teleost and elasmobranch species in a diversity of habitats, ranging from sheltered estuaries to the offshore pelagic environment. However, the practicalities of designing an effective network of receivers to optimally monitor animal movements can be challenging. In this study the receiver array was optimised through a series of incremental steps to achieve an efficient design that allowed for the specific objectives to be addressed. The specific objectives of this study were to i) gain an understanding of the long term space use patterns and site fidelity of sub-adult N. acutidens within degree of use of the St. Joseph Atoll lagoon and surrounding habitats, and ii) investigate their short term behavioural patterns in response to natural rhythmic cycles. The important role the atoll plays in the sub-adult stage of this species was demonstrated by the very low numbers of detections outside the atoll compared to the very large numbers of detections inside the atoll. Over the course of a year the tagged sharks showed a high degree of site fidelity to the atoll, with 79 – 100% of the individuals detected during each month and 50% being detected on a near daily basis. This result provides testimony of the nursery role of the atoll and importance of these habitats in the early life history for this species. Individual area use was generally found to be restricted to the eastern part of the atoll incorporating a portion of the central deep lagoon and a nearby adjacent area of the sand flats. The movements of sub-adult N. acutidens on and off of the shallow flats surrounding the central lagoon (likely for foraging) were found to be strongly influenced by the tidal height and the diel cycle. Tagged sharks were found to utilise the flats more regularly when the tidal height was greater than 90 cm and particularly more so during the night and early morning than during daylight times. The combined results of this study expose the vulnerability of this species to rapid local depletion. Similarly, the effectiveness of spatial management measures, such as no-take marine protected areas is highlighted as an efficient tool for the future conservation of this species. In the St. Joseph Atoll in particular, the use of a multi-levelled protection approach, where the eastern portion on the atoll is completely restricted while the remaining area is utilized for non-consumptive tourism activities, could be highly effective. Future research should investigate changes in area use throughout the ontogeny of this species as well improve the understanding of the breeding site fidelity and population size of reproductive females using the St. Joseph Atoll.
5
Rosan, Dante Bruno Avanso [UNESP]. „Investigação de mutações nos genes sinápticos SHANK2 e SHANK3 em Transtornos do Espectro do Autismo“. Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/127777.
Der volle Inhalt der QuelleAnnotation:
Made available in DSpace on 2015-09-17T15:25:32Z (GMT). No. of bitstreams: 0
Previous issue date: 2015-03-03. Added 1 bitstream(s) on 2015-09-17T15:48:39Z : No. of bitstreams: 1
000844031_20160225.pdf: 302005 bytes, checksum: d7de49b71732267bd0dc7f6635246bac (MD5) Bitstreams deleted on 2016-02-26T14:03:52Z: 000844031_20160225.pdf,. Added 1 bitstream(s) on 2016-02-26T14:04:48Z : No. of bitstreams: 1
000844031.pdf: 1179682 bytes, checksum: 523919910a45d85bc6d02e781b6bcb24 (MD5)Os Transtornos do Espectro do Autismo (TEA) são doenças neuropsiquiátricas complexas, com etiologia e manifestações clínicas muito variáveis. Tais manifestações são observadas antes dos três anos de vida. A prevalência é alta na população, com uma proporção de quatro homens afetados para cada mulher afetada. Em apenas 10-25% dos casos um fator etiológico é observado, genético ou ambiental, dependendo da composição da casuística e das técnicas laboratoriais utilizadas. Há descrições de centenas de genes e regiões genômicas associadas com a predisposição, por apresentarem mutações e variações no número de cópias (CNVs) e a maior parte tem expressão no sistema nervoso central, principalmente em sinapses. Entre os genes candidatos, se destacam o SHANK2 e o SHANK3, ainda não estudados em casuísticas brasileiras. No SHANK2, localizado em 11q13.2, já foram descritas mutações em sete de seus 25 éxons, enquanto no SHANK3, localizado em 22q13 e com 23 éxons, também há descrições de mutações em vários éxons, mas especialmente em três. Muitas mutações nestes dois genes foram observadas em autistas, mas não em indivíduos controles, o que sugere seu envolvimento na etiologia da doença. Este estudo investigou mutações nos éxons 11, 13 e 22 do gene SHANK2 e nos éxons 2, 6 e 22 do SHANK3, que são os mais frequentemente envolvidos nos achados em TEA. O estudo dos seis éxons foi realizado por sequenciamento direto, em 200 afetados e os resultados foram comparados a um banco de dados com os de 566 controles saudáveis. Onze alterações, seis no gene SHANK2, uma delas ainda não descrita, e cinco no gene SHANK3, todas não descritas anteriormente. Nenhum paciente apresentou mais de uma alteração em SHANK2 ou SHANK3, ou nos dois genes. Os resultados mostraram que mutações nos genes SHANK2 e SHANK3 são frequentes na população brasileira com TEA e estão relacionadas com a etiologia destas doenças...
The Autism Spectrum Disorders (ASD) are complex neuropsychiatric diseases, with widely etiology and clinical manifestations. Such manifestations are observed before three years of life. The prevalence is high in the population, with a ratio of four affected men for each affected woman. In only 10-25% of cases an etiological factor is observed, genetic or environmental, depending of the composition of samples and laboratory techniques used. There are descriptions of hundreds of genes and genomic regions associated with predisposition, they present mutations and copy number variations (CNVs) and most have expression in the central nervous system, especially at synapses. Among the candidate genes, we highlight the SHANK2 and the SHANK3, not yet studied in Brazilian subjects. In SHANK2, located in 11q13.2, mutations have been described in seven of its 25 exons, while in SHANK3 located at 22q13 with 23 exons, there are descriptions of mutations in several exons, but especially three. Many mutations in these two genes were observed in autistic patients, but not in healthy controls, suggesting an involvement in the etiology of the disease. This study investigated mutations in exons 11, 13 and 22 of SHANK2 gene and exons 2, 6 and 22 of SHANK3, which are most often involved in ASD findings. The study of six exons was performed by direct sequencing, in 200 affected and the results were compared to a genome bank with 566 healthy controls. Eleven alterations were found, six on SHANK2 gene, one not yet described, and five in SHANK3 gene, all not previously described. No patient had more than one alteration in SHANK2 or SHANK3, or both genes. The results showed that mutations in SHANK2 and SHANK3 gene are frequent in the Brazilian population with ASD and are related to the etiology of these diseases. However, the clinical relevance of each of the alterations found should be investigated. This study may help...
6
Rosan, Dante Bruno Avanso. „Investigação de mutações nos genes sinápticos SHANK2 e SHANK3 em transtornos do espectro do autismo /“. São José do Rio Preto, 2015. http://hdl.handle.net/11449/127777.
Der volle Inhalt der QuelleAnnotation:
Orientador: Agnes Cristina Fett-ConteBanca: Ana Elizabete Silva
Banca: Karina Griesi Oliveira
Resumo: Os Transtornos do Espectro do Autismo (TEA) são doenças neuropsiquiátricas complexas, com etiologia e manifestações clínicas muito variáveis. Tais manifestações são observadas antes dos três anos de vida. A prevalência é alta na população, com uma proporção de quatro homens afetados para cada mulher afetada. Em apenas 10-25% dos casos um fator etiológico é observado, genético ou ambiental, dependendo da composição da casuística e das técnicas laboratoriais utilizadas. Há descrições de centenas de genes e regiões genômicas associadas com a predisposição, por apresentarem mutações e variações no número de cópias (CNVs) e a maior parte tem expressão no sistema nervoso central, principalmente em sinapses. Entre os genes candidatos, se destacam o SHANK2 e o SHANK3, ainda não estudados em casuísticas brasileiras. No SHANK2, localizado em 11q13.2, já foram descritas mutações em sete de seus 25 éxons, enquanto no SHANK3, localizado em 22q13 e com 23 éxons, também há descrições de mutações em vários éxons, mas especialmente em três. Muitas mutações nestes dois genes foram observadas em autistas, mas não em indivíduos controles, o que sugere seu envolvimento na etiologia da doença. Este estudo investigou mutações nos éxons 11, 13 e 22 do gene SHANK2 e nos éxons 2, 6 e 22 do SHANK3, que são os mais frequentemente envolvidos nos achados em TEA. O estudo dos seis éxons foi realizado por sequenciamento direto, em 200 afetados e os resultados foram comparados a um banco de dados com os de 566 controles saudáveis. Onze alterações, seis no gene SHANK2, uma delas ainda não descrita, e cinco no gene SHANK3, todas não descritas anteriormente. Nenhum paciente apresentou mais de uma alteração em SHANK2 ou SHANK3, ou nos dois genes. Os resultados mostraram que mutações nos genes SHANK2 e SHANK3 são frequentes na população brasileira com TEA e estão relacionadas com a etiologia destas doenças...
Abstract: The Autism Spectrum Disorders (ASD) are complex neuropsychiatric diseases, with widely etiology and clinical manifestations. Such manifestations are observed before three years of life. The prevalence is high in the population, with a ratio of four affected men for each affected woman. In only 10-25% of cases an etiological factor is observed, genetic or environmental, depending of the composition of samples and laboratory techniques used. There are descriptions of hundreds of genes and genomic regions associated with predisposition, they present mutations and copy number variations (CNVs) and most have expression in the central nervous system, especially at synapses. Among the candidate genes, we highlight the SHANK2 and the SHANK3, not yet studied in Brazilian subjects. In SHANK2, located in 11q13.2, mutations have been described in seven of its 25 exons, while in SHANK3 located at 22q13 with 23 exons, there are descriptions of mutations in several exons, but especially three. Many mutations in these two genes were observed in autistic patients, but not in healthy controls, suggesting an involvement in the etiology of the disease. This study investigated mutations in exons 11, 13 and 22 of SHANK2 gene and exons 2, 6 and 22 of SHANK3, which are most often involved in ASD findings. The study of six exons was performed by direct sequencing, in 200 affected and the results were compared to a genome bank with 566 healthy controls. Eleven alterations were found, six on SHANK2 gene, one not yet described, and five in SHANK3 gene, all not previously described. No patient had more than one alteration in SHANK2 or SHANK3, or both genes. The results showed that mutations in SHANK2 and SHANK3 gene are frequent in the Brazilian population with ASD and are related to the etiology of these diseases. However, the clinical relevance of each of the alterations found should be investigated. This study may help...
Mestre
7
Blizard, Katherine S. „Shark Sim: A Procedural Method of Animating Leopard Sharks Based on Raw Location Data“. DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/938.
Der volle Inhalt der QuelleAnnotation:
Fish such as the Leopard Shark (Triakis semifasciata) can be tagged on their fin, released back into the wild, and their location tracked though technologies such as autonomous robots. Timestamped location data about their target is stored. We present a way to procedurally generate an animated simulation of T. semifasciata using only these timestamped location points.
This simulation utilizes several components. Input timestamps dictate a monotonic time-space curve mapping the simulation clock to the space curve. The space curve connects all the location points as a spline without any sharp folds that are too implausible for shark traversal. We create a model leopard shark that has convincing kinematics that respond to the space curve. This is achieved through acquiring a skinned model and applying T. semifasciata motion kinematics that respond to velocity and turn commands. These kinematics affect the spine and all fins that control locomotion and direction. Kinematic- based procedural keyframes added onto a queue interpolate while the shark model traverses the path.
This simulation tool generates animation sequences that can be viewed in real-time. A user study of 27 individuals was deployed to measure the perceived realism of the sequences as judged by the user by contrasting 5 different film sequences. Results of the study show that on average, viewers perceive our simulation as more realistic than not.
8
Heithaus, Michael R. „Habitat use decisions by bottlenose dolphins (Tursiops aduncus) and tiger sharks (Galeocerdo cuvier) in a subtropical seagrass ecosystem“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ61648.pdf.
Der volle Inhalt der Quelle
9
Davis, Christopher. „Prey Selection by Young Lemon Sharks (Negaprion brevirostris) at Chandeleur Island Nursery Habitats with a Comparison to Three Other Co-Occurring Shark Species“. ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1281.
Der volle Inhalt der QuelleAnnotation:
The Chandeleur Islands (Louisiana) contain nursery habitats for lemon sharks that provide abundant prey and protection from predation. Other local shark species (Atlantic sharpnose, bull, and blacktip sharks) co-occur with lemon sharks in the same region, including the nearby Biloxi Marshes. To better assess how lemon sharks use these nursery habitats, I measured diet and prey availability of young of the year and juvenile lemon sharks from 2009 to 2010. Young lemon sharks at the Chandeleur Islands have a relatively reduced diet breadth in comparison to those from nurseries in Bimini (Bahamas) and the Florida Keys. At the Chandeleur Islands, young lemon sharks appear to be opportunistically feeding on the most abundant prey items, resulting in high prey abundance and low diversity in their diet. Opportunistic feeding by young lemon sharks suggests minimal dietary overlap with other local shark species, resulting in minimal competition for resources.
10
Abercrombie, Debra. „Efficient PCR-Based Identification of Shark Products in Global Trade: Applications for the Management and Conservation of Commercially Important Mackerel Sharks (Family Lamnidae), Thresher Sharks (Family Alopiidae) and Hammerhead Sharks (Family Sphyrnidae)“. NSUWorks, 2004. http://nsuworks.nova.edu/occ_stuetd/131.
Der volle Inhalt der QuelleAnnotation:
Shark populations worldwide are suspected to be in severe decline due to domestic and international markets for trade in shark products, especially dried fins in Asian markets, and as a result of bycatch mortality in multi-species fisheries. The management of sharks on a species-specific basis has become imperative for shark conservation, particularly in regions where numerous species are heavily fished, because sharks with differing life-history characteristics respond differently to exploitation. However, many commercially exploited sharks are morphologically similar and not easily identifiable to the species level. This problem is exacerbated when it comes to identifying detached fins, processed carcasses (logs), and filets or steaks at the dock or in trade.
To address these species-identification problems and make available an accurate but practical, DNA-based forensic method for use in conservation and management of sharks, I have developed a highly streamlined genetic assay based on multiplex polymerase chain reaction (PCR) and species-specific primers derived from interspecific DNA sequence differences in the nuclear ribosomal internal transcribed spacer 2 (ITS2) locus of sharks. This forensic assay allows accurate identification of body parts from ten shark species commonly exploited worldwide for their meat and/or fins. In this thesis, I report on the development and use of this assay in the form of two separate suites of species-specific PCR primers that can be used in a high-density multiplex format to achieve rapid and accurate species identification. Chapter 1 of this thesis describes a suite of species-specific primers and multiplex PCR assay that simultaneously distinguishes among seven pelagic shark species: four species of mackerel sharks: shortfin mako (Isurus oxyrinchus), longfin mako (Isurus paucus), porbeagle (Lamna nasus) and salmon (Lamna ditropis); and the three species of alopiid (thresher) sharks: common thresher (Alopias vulpinus), bigeye thresher (Alopias superciliosus) and pelagic thresher (Alopias pelagicus). The second species-specific primer suite, described in chapter 2, simultaneously identifies the three globally distributed and most commercially important species of hammerheads: the great hammerhead (Sphyrna mokarran), scalloped hammerhead (Sphyna lewini) and the smooth hammerhead (Sphyrna zygaena).
The species-specific PCR primers and forensic approach described here provide an efficient, straightforward technique that can be used in conservation and management relevant contexts where large volumes of samples need to be screened quickly. Preliminary testing of dried fins from the Hong Kong market and confiscated fins from U.S. and South African law enforcement activities suggests that this genetic technique will be useful for large-scale survey applications, such as monitoring the species composition of the fin trade as well as improving fisheries law enforcement capabilities. The efficient nature of the general forensic approach reported here may also make it useful as a model applicable to monitoring trade in other wildlife products on a global scale.
11
Schaaff, Melissa [Verfasser]. „Morphologische Analyse dendritischer Spines in verschiedenen Hirnregionen von Shank2/Shank3-Mausmutanten mit Hilfe der Golgi-Färbetechnik / Melissa Schaaff“. Ulm : Universität Ulm, 2017. http://d-nb.info/1149155302/34.
Der volle Inhalt der Quelle
12
Huang, Katie. „Soup, Fins, and Exploitation: An Analysis of the Current State of Shark Finning“. Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/scripps_theses/506.
Der volle Inhalt der QuelleAnnotation:
Despite being one of the most recognizable sea creatures in the world, sharks remain widely misunderstood by the public. Media coverage often sensationalizes them as dangerous creatures, when in reality, humans pose a much more significant threat to sharks than vice versa. Over the past few decades, overfishing has decimated populations worldwide as demand increases for byproducts such as meat, cartilage, and fins in particular, a crucial ingredient in the Chinese delicacy of shark fin soup. Finning, a particularly inefficient practice that promotes overfishing and waste, occurs when fishers cut off fins at sea and throw carcasses overboard. As sharks play an important role in marine ecosystems as apex predators and are slow to reproduce, increased attention to shark conservation is urgently needed. Although there have been attempts by international organizations such as the United Nations and by individual countries, current legislation has proven to be inadequate in combating shark exploitation. Though public awareness is on the rise thanks to increased media coverage and environmental advocacy, sharks still need greater protection in the face of overharvest and stock depletion. This thesis details the current state of shark exploitation, including shark biology, public perceptions of sharks, and current levels of shark finning, as well as the economics behind the trade. It also analyzes previous actions taken both at the international and national levels. Finally, it recommends further actions to be undertaken in order to preserve declining shark populations and keep them from extinction.
13
Ryklief, Rabiah. „Population dynamics of the white shark, Carcharodon carcharias, at Mossel Bay, South Africa“. Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1012077.
Der volle Inhalt der QuelleAnnotation:
Mossel Bay is internationally recognised as one of the centres of abundance of white sharks in South Africa. During 2008 – 2010 there were four sites within the bay i.e. Seal Island, Hartenbos, Kleinbrak and Grootbrak, which were sampled to gain insight into the population dynamics of this species. Currently, life history information on white sharks in this area is limited. This study used a combination of mark-recapture using photographic identification techniques and sight per unit effort methods. Inter-annual, seasonal and spatial patterns in abundance are assessed. The effects of environmental parameters on abundance are also investigated. Photographic identification techniques were employed to identify unique individuals within the sampled population. This modified mark-recapture approach is therefore non-invasive and cost-effective. Open population POPAN parameterization was used to analyse the data in software program MARK. The total population was estimated at 389 sharks (351 – 428; 95 percent CI). Over the three year period, a marginal (yet non-significant) decline in numbers was observed, in terms of both monthly and seasonal population estimates. Sightings per unit effort data were collected during sampling trips. The relative abundance and body size composition of white sharks demonstrated significant spatial and seasonal variation. The highest and lowest relative abundance was observed at Seal Island and Hartenbos, respectively, and is likely attributed to prey availability. Although white sharks were present year-round in Mossel Bay, the highest relative abundance occurred during summer and the lowest relative abundance occurred during spring. White sharks were grouped into three main size classes based on estimated total length (TL): Young of the year (YOY) (125 – 174cm), juvenile (175 – 324cm) and adult (325 – 524cm). YOY white sharks were most prevalent at Grootbrak, with juvenile and adult individuals concentrating at Seal Island. Although most size classes were present throughout the year, seasonal differences were observed. YOY individuals were most abundant in the autumn months, juvenile size-classes appeared to concentrate in the study area during winter, and the adult individuals were most abundant in the spring months. Overall, there was a high concentration of white sharks ranging in size between 175 – 324cm TL, and it was thus hypothesised that Mossel Bay represents an interim nursery or grow out area for white sharks in South Africa. Data collected from 2008 and 2009 was used to investigate the relationship between specific environmental parameters, i.e. sea surface temperature and vertical water clarity, in relation to the relative abundance of white sharks. Sea surface temperature and vertical water clarity observed in this study ranged from 9.3 - 22.7°C and 0 – 10m, respectively. Sea surface temperature did not have a significant influence on the relative abundance of white sharks and this may be attributed to the thermoregulatory capacity of the species. Vertical water clarity, however, did significantly influence the relative abundance. Furthermore, the combined effect of site and season significantly influenced the relative abundance of white sharks and is probably linked to the distribution and abundance of inshore prey resources.
14
De, la Puente Jeri Santiago. „Characterizing the knowledge and attitudes towards sharks and the domestic use of shark meat and fins in Peru“. Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63144.
Der volle Inhalt der QuelleAnnotation:
Shark populations show evidence of declines at a global scale. Knowledge of the socio-economic consequences of changes in their abundance is limited. Furthermore, research on the status of peoples’ knowledge and attitudes towards sharks and how these affect their values, behaviours and actions is lagging behind the pursuit of biological and ecological concerns.
Framed within Peru’s National Plan of Action for the Conservation and Management of Sharks, Rays and Chimeras, the present study sought to: (1) characterize coastal Peruvian’s general knowledge and attitudes towards sharks and shark meat consumption; (2) describe the domestic market and trade flows of shark commodities; (3) estimate the apparent consumption of shark meat and fins in Peru; and (4) reconstruct the catches required to maintain the estimated local levels of shark consumption.
Using data from over 2000 surveys provided by OCEANA Peru, I determined that a limited proportion of the Peruvian coastal population was aware of sharks’ presence in the country’s waters, and of these, only a minor subset was capable of naming shark species found locally. Furthermore, Peruvians have very negative attitudes towards sharks, driven by fear and prevalent misconceptions regarding their feeding habits and behaviour, which are reinforced by mass media.
Using public data, provided by various organizations within the Peruvian government, I determined that shark meat consumption in Peru is high and growing, although its contribution to national food security remains low. Nonetheless, most shark meat consumers are not aware that they are eating sharks due to deceptive advertising.
Improvements on seafood traceability have only been observed on exports, as data associated with landings, local markets and imports remains highly aggregated. Moreover, official statistics severely underestimate the catches required to maintain the Peruvian supply (by 39%) and demand (by 85%) of shark products.
These findings can be used to inform the design of communications campaigns and government policies seeking to: (i) improve people’s knowledge and attitudes towards sharks in Peru, (ii) increase seafood traceability, (iii) protect seafood consumers, and (iv) advance towards the incorporation of these dimensions in the quantitative evaluation of policy outcomes for achieving sustainable shark fisheries.Science, Faculty of
Resources, Environment and Sustainability (IRES), Institute for
Graduate
15
Jaiteh, Vanessa. „"Sharks are important, but so is rice": Opportunities and challenges for shark fisheries management and livelihoods in eastern Indonesia“. Thesis, Jaiteh, Vanessa (2017) "Sharks are important, but so is rice": Opportunities and challenges for shark fisheries management and livelihoods in eastern Indonesia. PhD thesis, Murdoch University, 2017. https://researchrepository.murdoch.edu.au/id/eprint/38470/.
Der volle Inhalt der QuelleAnnotation:
Targeted fisheries for shark fin are one of the main causes driving the unprecedented decline of shark populations. Despite widespread concern for sharks and calls for their conservation, a lack of data often delays regulatory action for shark fisheries. For over two decades, Indonesia has reported higher average shark landings than any other nation, but information on its shark fisheries is extremely limited. The eastern Indonesian shark fishery, here defined to extend from East Nusa Tenggara to Papua, is virtually data-less and beyond the focus of central fisheries agencies. The lack of essential information, including the location of fishing grounds, catch composition and fishing effort, as well as biological and socio-economic characteristics of harvested species and the livelihoods they support, impedes the development of effective fisheries management in this region. This thesis uses a transdisciplinary approach to address these knowledge gaps.
My findings are based on extensive field studies in three remote coastal communities with fishing grounds in the Seram, Halmahera, Aru-Arafura and Timor Seas. During my stay in each community, I involved fishers in collecting and interpreting fishery data, studied local fishing practices and patron-fisher relationships, and conducted in-depth interviews with fishers, shark fin bosses and other community members. This allowed me to portray the fishery from biological, economic and sociological perspectives (Chapter 2), and to investigate the reliability and accuracy of fisher data. The description of a range extension for the vulnerable fossil shark Hemipristis elongata demonstrates that fisher’s species identifications are not only reliable, but can lead to serendipitous findings on species occurrences (Chapter 3).
Expanding on the application of fisher data, I then use diverse data sources to provide the first sustainability assessment of the eastern Indonesian shark fishery (Chapter 4). The fishery targets over 40 species, many of which exhibit declining catch rates over the last two decades and are unable to sustain continued fishing pressure due to their low rebound potential and high fishing mortality. Finding that the fishery is most likely unsustainable, I move on to combine fishery and interview data from my case study sites with fishery-independent methods to examine key factors for successful shark conservation in one of the first studies to investigate the effectiveness of explicitly shark-specific spatial closures and their impact on shark fishers (Chapter viii 5). The results of this study clearly show that effective governance of spatial closures can result in higher abundances of sharks by allowing them to recover, and providing a refuge, from heavy fishing pressure. However, it also becomes evident that exclusion from fishing grounds can have profound effects on fishers’ behaviour, evidenced by a shift of fishing effort to unprotected, less productive areas and the pursuit of alternative livelihoods, including, in some cases, illegal activities. The theme of livelihood diversification and alternatives is explored further in Chapter 6, where I deconstruct a series of recent developments that have cumulatively reduced the appeal and stability of shark fishing, a once prosperous livelihood. These developments involve multiple levels of governance from local to regional, bilateral and international scales, and include declining catches in all fishing grounds, a reduction in the demand for, and trade of shark fin, the loss of access to fishing grounds, transboundary fishing, restrictive debt with shark fin bosses, and limited options for livelihood alternatives. Indebted fishers find themselves trapped in an increasingly unprofitable livelihood but are unable to leave the fishery even when willing to do so, due to financial, technical or other constraints. Nevertheless, examples of livelihood diversification are evident in all case study communities, with varying success and without the impetus or support of outside fisheries management or community development interventions.
In Chapter 7, I contend that the eastern Indonesian shark fishery is characterised by levels of uncertainty and complexity that conventional methods of fisheries assessment and management were not designed to deal with. Instead, data-poor fisheries management based on precautionary principles, and actively involving fishers in knowledge generation, are needed to mitigate against continued fishery-driven declines of shark populations. The thesis concludes with twelve recommendations for proactive management, based on challenges and opportunities identified during my research. I propose that the most promising strategy for protecting shark populations in eastern Indonesia is a composite, data-poor management approach that features a combination of spatial protection, consistent implementation and enforcement of trade regulations, researchbased fisheries regulations, and support for fishers’ livelihood diversification.
16
Horn, Rebekah L. „Applying a Molecular Genetics Approach to Shark Conservation and Management: Assessment of DNA Barcoding in Hammerhead Sharks and Global Population Genetic Structuring in the Gray Reef Shark, Carcharhinus amblyrhynchos“. NSUWorks, 2010. http://nsuworks.nova.edu/occ_stuetd/218.
Der volle Inhalt der QuelleAnnotation:
Chapter 1
DNA barcoding based on the mitochondrial cytochrome c oxidase subunit I (COI) gene sequence is emerging as a useful tool for identifying unknown, whole or partial organisms to species level. However, the application of only a single mitochondrial marker for robust species identification has also come under some criticism due to the possibility of erroneous identifications resulting from species hybridizations and/or the potential presence of nuclear-mitochondrial psuedogenes. The addition of a complementary nuclear DNA barcode has therefore been widely recommended to overcome these potential COI gene limitations, especially in wildlife law enforcement applications where greater confidence in the identifications is essential. In this study, we examined the comparative nucleotide sequence divergence and utility of the mitochondrial COI gene (N=182 animals) and nuclear ribosomal internal transcribed spacer 2 (ITS2) locus (N=190 animals) in the 8 known and 1 proposed cryptic species of globally widespread, hammerhead sharks (family Sphyrnidae). Since hammerhead sharks are under intense fishing pressure for their valuable fins with some species potentially set to receive CITES listing, tools for monitoring their fishery landings and tracking trade in their body parts is necessary to achieve effective management and conservation outcomes. Our results demonstrate that both COI and ITS2 loci function robustly as stand-alone barcodes for hammerhead shark species identification. Phylogenetic analyses of both loci independently and together accurately place each hammerhead species together in reciprocally monophyletic groups with strong bootstrap support. The two barcodes differed notably in levels of intraspecific divergence, with average intraspecific K2P distance an order of magnitude lower in the ITS2 (0.297% for COI and 0.0967% for ITS2). The COI barcode also showed phylogeographic separation in Sphyrna zygaena, S. lewini and S. tiburo, potentially providing a useful option for assigning unknown specimens (e.g. market fins) to a broad geographic origin. We suggest that COI supplemented by ITS2 DNA barcoding can be used in an integrated and robust approach for species assignment of unknown hammerhead sharks and their body parts in fisheries and international trade.
Chapter 2
The gray reef shark (Carcharhinus amblyrhynchos) is an Indo-Pacific, coral reef associated species that likely plays an important role as apex predator in maintaining the integrity of coral reef ecosystems. Populations of this shark have declined substantially in some parts of its range due to over-fishing, with recent estimates suggesting a 17% decline per year on the Great Barrier Reef (GBR). Currently, there is no information on the population structure or genetic status of gray reef sharks to aid in their management and conservation. We assessed the genetic population structure and genetic diversity of this species by using complete mitochondrial control region sequences and 15 nuclear microsatellite markers. Gray reef shark samples (n=305) were obtained from 10 locations across the species’ known longitudinal Indo-Pacific range: western Indian Ocean (Madagascar), eastern Indian Ocean (Cocos [Keeling] Islands, Andaman Sea, Indonesia, and western Australia), central Pacific (Hawaii, Palmyra Atoll, and Fanning Atoll), and southwestern Pacific (eastern Australia – Great Barrier Reef). The mitochondrial and nuclear marker data were concordant in most cases with population-based analysis showing significant overall structure (FST = 0.27906 (pST = 0.071 ± 0.02), and significant pairwise genetic differentiation between nearly all of the putative populations sampled (i.e., 9 of the 10 for mitochondrial and 8 of the 10 for nuclear markers). Individual-based analysis of microsatellite genotypes identified at least 5 populations. The concordant mitochondrial and nuclear marker results are consistent with a scenario of very low to no appreciable connectivity (gene flow) among most of the sampled locations, suggesting that natural repopulation of overfished regions by sharks from distant reefs is unlikely. The results also indicate that conservation of genetic diversity in gray reef sharks will require management measures on relatively local scales. Our findings of extensive genetic structuring suggests that a high level of genetic isolation is also likely to be the case in unsampled populations of this species.
17
Dicken, Matthew Laurence. „Population dynamics of the raggedtooth shark (Carcharias taurus) along the east coast of South Africa“. Thesis, Connect to this title online, 2006. http://eprints.ru.ac.za/247/.
Der volle Inhalt der Quelle
18
Ford, Ryan Michael. „Diet and Reproductive Biology of the Blacknose Shark (Carcharhinus Acronotus) from the Southwestern Atlantic Ocean“. UNF Digital Commons, 2012. http://digitalcommons.unf.edu/etd/347.
Der volle Inhalt der QuelleAnnotation:
The blacknose shark (Carcharhinus acronotus) is a common small coastal shark species found in nearshore waters along the southeast coast of the United States, from North Carolina into the Gulf of Mexico and extending further south into the Bahamas. There has been some debate in recent years over the reproductive periodicity of C. acronotus in waters off the U.S. coast. Earlier studies have suggested that Gulf C. acronotus reproduce on an annual basis whereas the Atlantic populations of this species may reproduce biennially. Additionally, there have been no known studies on the diet of C. acronotus. The goal of the present study was to re-evaluate the reproductive biology of the Atlantic populations of C. acronotus with the intent on clarifying discrepancies in reproduction as well as provide information on dietary trends. This was accomplished by examining male and female reproductive tracts and gut contents in animals caught throughout the Atlantic range of C. acronotus. Based on these data, spermatogenesis occurs between late May to early July with peak sperm production occurring in June and July. In females, follicular development is complete by late June-early July with ovulation occurring shortly afterwards. Mating occurs between mid-June and early July based on the presence of fresh mating scars on females captured during this time. Current data suggests that gestation begins late July with parturition occurring late May to early June the following year. As observed in earlier studies, reproductive periodicity appears to be largely biennial. However, evidence for concurrent follicular development and pregnancy was observed in several females, suggesting that at least a portion of the Atlantic population may reproduce on an annual basis. Dietary data shows a dominance of teleost prey items in the diets of C. acronotus with scianids making up the majority of the identifiable teleosts.
19
Varnau, Hannah Grace. „The Shakes“. Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1459421872.
Der volle Inhalt der Quelle
20
Rodda, Kate. „Development in the Port Jackson shark embryo /“. Title page, table of contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phr686.pdf.
Der volle Inhalt der Quelle
21
Sin, Ying-tung. „Age, growth, and reproductive biology of whitespotted bamboo shark (Chiloscyllium plagiosum) from Hong Kong and adjacent waters“. Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43085490.
Der volle Inhalt der Quelle
22
Powlik, James. „Feeding structures of the white shark, Carcharodon Carcharias (Linnaeus), with notes on other species“. Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29758.
Der volle Inhalt der QuelleAnnotation:
Fresh and prepared museum specimens of the white shark Carcharodon carcharias, bull shark Carcharhinus leucas, and salmon shark Lamna ditropis were measured and compared with respect to tooth position and anterior buccal cavity dimensions. Coordinates of functional tooth position were defined by 1) deviation from the midline and 2) degree of erection. Tooth positions were not unique in any region of the mouth/ but demonstrated less variablity within 30° of the midline, particularly for male specimens of all three species (71.48° +- 10° erect) and all Carcharhinus leucas specimens (46.58° +-.96° erect).
Analysis of high-speed videotape of white shark feeding indicated a 15.7° reduction in tooth cutting angle with jaw adduction following upper jaw protraction. It is suggested that such changes in tooth cutting angles during feeding are principally the result of jaw flexure, and may make the teeth more effective by angling them inward towards the gullet.
Values for tooth removal from fresh-frozen white shark material using a tensile testing apparatus ranged from 12 kg (for a 110° erect tooth) to 70 kg (for a 59° erect tooth). Removal load was applied directly outward from the mouth to simulate a resistant prey item, and was not significantly different for degree of erection or tooth position on the jaw margin. Tooth position is seen to change with jaw protraction, however this change does not enhance tooth functionality by increasing the load required to remove the tooth.Science, Faculty of
Zoology, Department of
Graduate
23
Gerry, Shannon Page. „Feeding mechanics of a trophic generalist and a specialist shark species : a comparison of diet, behavior and function /“. View online ; access limited to URI, 2008. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3314455.
Der volle Inhalt der Quelle
24
Marengo, Amy Elizabeth. „Shark Heart“. Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/73493.
Der volle Inhalt der QuelleAnnotation:
Shark Heart is a manuscript of poems that maneuver between fearlessness and tenderness at the drop of a dime. In the same way that many sharks need to survive by constantly swimming in order to extract oxygen from the water streaming between their gills, the heart muscle needs to constantly pump blood throughout a body to sustain life: there is no rest for either fish or organ until death. These poems, too, keep pushing forward; they are not afraid to explore the small beats of childhood and hidden desire, or the larger mysteries of illness and death.Master of Fine Arts
25
King, Carissa. „Investigating the movement patterns of sharks and the significance of potential shark predation attempts on bottlenose dolphins (Tursiops aduncus) in the waters of south-western Australia“. Thesis, King, Carissa (2014) Investigating the movement patterns of sharks and the significance of potential shark predation attempts on bottlenose dolphins (Tursiops aduncus) in the waters of south-western Australia. Honours thesis, Murdoch University, 2014. https://researchrepository.murdoch.edu.au/id/eprint/25039/.
Der volle Inhalt der QuelleAnnotation:
Despite their prominence as species of great interest and conservation significance, currently our understanding of shark movement patterns and their ecological role as predators on small Odontocete populations is far from complete. The first component of my research investigated the movement patterns of the four main commercial species (sandbar, Carcharhinus plumbeus; dusky, Carcharhinus obscurus; whiskery, Furgaleus macki; gummy, Mustelus antarcticus) and several species occasionally caught off the coast of Western Australia (Chapter 2). I analysed long-term (1994 to 2013), conventional tagging data collected by the Department of Fisheries, Western Australia to provide a detailed account of observed movement patterns. The second component of my research investigated the predatory role of sharks on bottlenose dolphins (Tursiops aduncus) off Bunbury, Western Australia (Chapter 3). I examined the prevalence of shark bites on systematically photographed dolphins over an eight year period (2007 to 2014). I also attempted to identify the shark species responsible for the attacks by seeking the expert opinions of three independent reviewers on the bite marks.
The analyses of movement patterns from the long-term tagging data (Chapter 2) found mean displacements of < 250 km for the four main commercial species. However, occasional displacements of more than 2,000 km were also observed for all four species. Displacement was positively correlated with time at liberty, size (fork length) and release condition. The swimming speed varied significantly between species, with faster movements observed for larger Carcharhinid sharks. Furthermore, significant differences in sex ratios at release and recapture were observed for gummy and whiskery sharks. A significantly higher proportion of females were released and recaptured for both species. Although, fork length was found to significantly vary for non-recaptured and recaptured sandbar and dusky sharks, results from the analyses were disregarded due to bias gear-selectivity and inaccurate measurements reported by fishermen. The highest recapture frequency for all other species occasionally caught was less than ten. Maximum displacements ranged from 0.70 to 1,143 km, these displacements were observed by wobbegongs (Orectolobus sp.) and copper whaler (Carcharhinus brachyurus) sharks, respectively. Maximum time at liberty ranged from 4 to 5,245 days for nervous (Carcharhinus cautus) and tiger (Galeocerdo cuvier) sharks, respectively. The estimated maximum swimming speed for occasionally caught species peaked at 0.42 km/hr for copper whaler (Carcharhinus brachyurus) sharks. Swimming speeds for all other species were less than 0.03 km/hr. No statistical analyses were completed for these species.
Analyses of the prevalence of external injuries believed to have been inflicted by sharks (Chapter 3) found that the total bite mark frequencies of systematically photographed dolphins varied significantly among age classes (calves, juveniles, adults) with the highest frequency of injuries sustained by adults (X2 = 38.436, P = < 0.001). Bite frequencies did not differ significantly between sexes or between mothers with or without calves (X2 = 0.111, P = 0.738; X2 = 1.316, P = 0.251, respectively). The total frequency of shark bites was significantly lower in the austral autumn and winter months than in the spring and summer (X2 = 15.333, P = 0.002). However, the frequency of fresh injuries was higher in the summer of 2013 (n = 8), than in other seasons (range = 0 - 1). When the data for 2013 were removed from the seasonal analyses the frequency of bites in summer (pooled over years) was higher but not significantly (X2 = 3.889, P = 0.274). The total frequency of injuries did not significantly differ among years (2008 – 2013) (X2 = 4.948, P = 0.422). After evaluating the photographed bite marks on dolphins, three independent reviewers suggested that the shark species responsible for the injuries were most likely white (Carcharodon carcharias), tiger (Galeocerdo cuvier), and several smaller Carcharhinid species (e.g., bull, Carcharhinus leucas; whaler, Carcharhinus brachyurus; dusky, Carcharhinus obscurus).
The results from Chapter 2 of the study provide a complete and meaningful representation of the movement patterns for the four main commercial species (sandbar, Carcharhinus plumbeus; dusky, Carcharhinus obscurus; whiskery, Furgaleus macki; and gummy, Mustelus antarcticus) and several species occasionally caught off Western Australia. The described movement patterns presented in this study can be incorporated into future conservation and management plans increasing their effectiveness and precision, ensuring west Australian shark stocks remain at target thresholds. The results from Chapter 3 refine our understanding of the interactions between sharks and small living Odontocetes (i.e., bottlenose dolphins, Tursiops aduncus). The results from the research confirm that sharks not only scavenge but actively hunt and predate living bottlenose dolphins. The ability and significant influence of these predatory sharks to shape and alter dolphin population dynamics is likely to be more important than previously recognised.
26
McKenzie, Jonathan F. „Occurrence and genetic diversity of lemon sharks (Negaprion brevirostris) at a nursery ground at the Chandeleur Islands, Louisiana“. ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1653.
Der volle Inhalt der QuelleAnnotation:
Anecdotal evidence suggested that immature lemon sharks (Negaprion brevirostris) occur at the Chandeleur Islands in southeastern Louisiana. From May 2009 to August 2011, the Nekton Research Laboratory at the University of New Orleans regularly sampled habitats at the Chandeleur Islands to confirm the presence of immature individuals of this species. During these efforts, 147 immature lemon sharks (neonates, young-of-the-year, and juveniles) were collected. Each shark was PIT tagged and a tissue sample was taken for genetic analyses. Sizes ranged from 56 – 177 cm total length. Sharks showed a preference for sandy substrate and smaller individuals showed significant preference for shallow waters. Collection data for N. brevirostris were obtained from various locations around the Gulf of Mexico for comparison. Based on a review of current literature, collection data, and microsatellite analysis it was possible to classify the Chandeleur Islands as an elasmobranch nursery ground under the definition presented by Huepel et al. (2007). Current literature and high densities of N. brevirostris suggests that the Chandeleur Islands are the only area in the northern Gulf of Mexico where neonatal and YOY lemon sharks have been recorded. Results from a combination of SPOT 5 satellite tags, PIT tags, and FLOY tags show that immature N. brevirostris at the Chandeleur Islands remain in the vicinity of the islands for several months. The abundance of juvenile sharks across years provides evidence of continuous use of these islands as a pupping area. Genetic analysis supports this information with 7 of 15 mothers returning across years. The combination of this information indicates that the Chandeleur Islands are the northern- and western-most documented nursery ground for this species. Special care should be given to this habitat as CPUE for N. brevirostris decreased significantly during this research following the 2010 Deepwater Horizon disaster and subsequent oil prevention measures. Genetic research indicates a high level of inbreeding and genetic separation between the Chandeleur Islands population and other known populations in Florida, Belize, and the Bahamas.
27
Lowe, Christopher G. „Bioenergetics and swimming efficiency of juvenile scalloped hammerhead sharks, Sphyrna lewini, in Kaneohe Bay, Oahu, Hawaii“. Thesis, University of Hawaii at Manoa, 1998. http://hdl.handle.net/10125/18160.
Der volle Inhalt der QuelleAnnotation:
The goal of this study was to determine the energetic
requirements of juvenile scalloped hammerhead sharks (Sphyrna
lewini) in Kaneohe Bay, Oahu, Hawaii using a multidisciplinary
approach. A large flume/respirometer (635 1)
was constructed to determine the critical swimming speeds
(Ucrit )' swimming kinematics (tailbeat frequency, tailbeat
amplitude, and stride length), and oxygen consumption rates
(V02 ) of juvenile sharks over a range of swimming speeds (U).
Swimming kinematics were also compared with unconstrained
sharks in a seawater pond. These experiments indicated that
tailbeat frequency (TBF) and water temperature could be used
as a predictor of U and V02 for free-swimming sharks in the
field; however, the flume affected the sharks' swimming
kinematics at slow speeds. The flume and pond kinematic
comparisons were used to correct for flume effects on sharks'
V02.
An acoustic tailbeat-sensing transmitter was designed
and constructed to quantify activity and energy consumption
of free-swimming hammerhead shark pups in Kaneohe Bay.
Sharks with transmitters behaved similarly to uninstrumented
sharks, but incurred a 28% increase in cost of transport due
to increased drag from the transmitters. These data were
used to correct for the effects of the transmitter on freeswimming
sharks in the field. Sharks tracked in Kaneohe Bay with tailbeat transmitters
exhibited increased U during dawn and dusk, while sharks
tracked in the warmer summer months had higher activity rates
and metabolic rates (MR) than a shark tracked during the
winter. Sharks tracked in this study had higher MR than
those measured for other species of tropical sharks and, as a
result, require higher daily rations. Low and negative
growth rates determined from sharks in the Bay and declining
catch rates over the season suggest that a large percentage
of the pups in Kaneohe Bay may starve as the result of their
high metabolic requirements. Although prey do not appear to
be li~itingi lack of foraging experience compounded by a high
daily metabolic demand may explain why sharks lose weight
during summer months. Those pups that survive the winter
experience lower MR due to seasonal temperature decline and
less competition as the result of high neonatal mortality.x, 130 leaves, bound : ill. (some col.) ; 29 cm.
Missing page 74.
28
Jesper, Målsten. „Vad är en digital shaker?“ Thesis, Umeå universitet, Institutionen Designhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-79985.
Der volle Inhalt der QuelleAnnotation:
Projektet i denna rapport har fokuserat på hur man kan förbättra den visuella och taktila upplevelsen av digitala slagverk. Målet var att utveckla en digital version av moderna percussionisters shakers, som tilltalar användarna inte bara med sina funktioner och digitala möjligheter utan även som ett musikinstrument.Processen och utveckling av instrumentimagen för digital percussion kan appliceras på alla digitala instrument, men resultatet av detta projekt illustreras genom ett koncept på en digital shaker.
29
Wolfson, David R. „Biomechanics of shaken baby syndrome“. Thesis, University of Nottingham, 2007. http://eprints.nottingham.ac.uk/11217/.
Der volle Inhalt der QuelleAnnotation:
In the first part of this work, an Anthropometric Test Dummy (ATD) was used to obtain torso acceleration data for Shaken Baby Syndrome (SBS). These data were used to drive computational simulations of SBS, in studies of the effect of neck stiffness and head-torso impact on injury risk. Finally, physical models were used to investigate the strain induced in brain tissue during shaking. Clinical literature describes victims of Shaken Baby Syndrome (SBS) as young infants with life-threatening brain injuries, and poor long-term outcome. However, biomechanical studies using ATI)s to study head motion during shaking have been inconclusive about the capacity for shaking alone to cause these injuries 11,21. This work comprises a series of investigations into these conflicting findings. Torso acceleration data for SBS, obtained using a specially constructed ATD, were found to be consistent with previous findings. The data were used to simulate shaking in computational studies of SBS, using Rigid Body Models (RBM) of the infant head and neck. Parametric studies were used to investigate the importance of neck stiffness in assessing the injury capacity of SBS, and showed that in order to exceed current injury criteria for SBS, impact was required. Head torso impact was then simulated, and although this resulted in higher injury risk than shaking alone, criteria for injuries associated with SBS were not reached. Since these investigations did not predict brain injury in cases of SBS without impact, the origins of injury criteria were reviewed. It was found that they are derived from single high energy events, which is distinct from the type of motion in SBS. In order to establish if cyclic, low-energy motion contributes to brain injury in SBS, Physical Continuum Modelling was used to study strain in brain tissue during shaking. A test rig was constructed to shake silicone gel models, and high-speed video used to capture the motion of optical markers with in the gel. Their movement was tracked using optical flow methods, and Green-Lagrangian strain derived by tensor algebra. No evidence was found to indicate a build up in strain between cycles, but published critical strains for damage to neural tissue were exceeded. Although shaking alone was not found not induce head motion in excess of brain injury criteria, tissue damage criteria were exceeded. The application of current brain injury criteria to SBS maybe therefore be inappropriate.
30
Chew, Megan Lenore. „Shaker Heights’ Revolt Against Highways“. The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1252436871.
Der volle Inhalt der Quelle
31
Wood, Anthony Darrell. „Population dynamics of the shortfin mako, Isurus Oxyrinchus, in the Northwest Atlantic : an examination of food habits, movement and habitat, survival, and population size /“. View online ; access limited to URI, 2007. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3277013.
Der volle Inhalt der Quelle
32
McCandless, Camilla Thomas. „Juvenile abundance in a summer nursery and ontogenetic changes in the distribution and migrations of sandbar sharks/“. View online ; access limited to URI, 2007. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3276995.
Der volle Inhalt der Quelle
33
Cerón, García Alejandra, Arias Thelma Del Pilar Estrada, Palomino Calef Yair Galvez, Sanchez Nataly Rosario Quispe und Rosazza Nicole Jaqueline Urrutia. „Proyecto MIKHUNA SHAKE“. Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652255.
Der volle Inhalt der QuelleAnnotation:
En el presente trabajo de investigación, se verán los aspectos que sean necesarios para la iniciación de nuestro proyecto para la elaboración y venta de nuestra bebida Mikhuna Shake. Nuestro segmento va dirigido a todas aquellas personas que mayores de 18 años, en búsqueda de un desayuno fácil, rápido de tomar y nutritivo. Nuestra propuesta de valor se basa en que es una bebida proteica, baja en grasas y azúcares, y está listo para tomar. Para el primer año, nuestro canal de ventas será por medio de las ventas directas a través de nuestras redes sociales.
Por otra parte, hemos utilizado 5 experimentos a través de Facebook e Instagram, con la finalidad de obtener nuevos aprendizajes. Asimismo, se realizaron promociones y descuentos con la finalidad de atraer a más clientes. La estrategia que se realizará para nuestro producto será la de penetración, dado que estamos lanzando un precio de introducción para ambas presentaciones a un precio de S/3.90 para el 300 ML y S/7.90 para el de 900 ML.
Nuestros ingresos son generados por nuestras ventas en ambos tamaños y se llevan a cabo mediante nuestras redes sociales. Además, se mantendrá una relación cercana con nuestros clientes para de darle un valor agregado al producto. La inversión que se realizará al comenzar nuestro proyecto será por un monto de S/29872. Esto nos permitirá iniciar nuestras operaciones y solventar los gastos necesarios. Finalmente, nuestro VAN resultante es positivo, el cual hace rentable nuestro negocio, a pesar de tener múltiples gastos preoperativos.
34
Kraig, Sarah Elizabeth. „Morphology and systematic implications of fossil and recent Lamnid shark vertebrae using computerized tomography (CT-scanning)“. Diss., Connect to online resource - MSU authorized users, 2008.
Den vollen Inhalt der Quelle finden
35
Bethea, Dana M. „Foraging ecology of the early life stages of four shark species (Rhizoprionodon terraenovae, Carcharhinus limbatus, Carcharhinus isodon, and Carcharhinus brevipinna) in Apalachicola Bay, Florida“. Connect to this title online, 2003. http://www.lib.ncsu.edu/theses/available/etd-04252003-160742/unrestricted/etd.pdf.
Der volle Inhalt der Quelle
36
Boswell, Anna. „‘Shakey Notions’ : settlement history on display“. Thesis, University of Auckland, 2011. http://hdl.handle.net/2292/11044.
Der volle Inhalt der QuelleAnnotation:
This thesis offers a critical examination of strategies employed by museums and heritage sites in representing settler-colonial history. Its concerns are focused through the lens of the northernmost region in Aotearoa New Zealand, Te Tai Tokerau, an area selected for its strong significance in this history. While several chapters deal with museums and heritage sites located within the region— including Waitangi National Trust, Ruapekapeka pa, the Kauri Museum at Matakohe, Te Rerenga Wairua, and the Kerikeri basin—the thesis interprets this designation in a broader way, too. Acknowledging that the region‟s history is not confined within its own geographical boundaries, it also discusses displays which have been staged in Canberra and in Salem, Massachusetts, and which relate to Te Tai Tokerau through the movement of materials, figures and stories. The thesis draws on a range of sources and theoretical models in order to devise approaches to loosely-framed phases of settlement. In its course, it deals with international trade carried out on distinct-but-related early cross-cultural frontiers; considers the concerted transformation of new world environments in terms of historical re-enactment; examines modes of display at the so-called birthplace of the nation in relation to „privileged settings‟, „hard facts‟ and historic turning points; explores counter-conventional ways of making sense of frontier conflict; and reflects on how notions of progress may be applied to emergent possibilities for tribal museums. In each of these cases, the thesis is concerned to examine the impact of postcolonial critiques on museum story-telling, and to examine the role that resurgent indigenous populations have played in shaping or re-shaping certain kinds of representations. The thesis pays particular attention to strains evident in contemporary modes of display, interpreting these as markers of the extent to which representations of settlement continue to be unsettled by the „shakey notions‟ (Maning 1967, 44) upon which they are necessarily founded. While its interests are primarily analytical, the thesis does offer a number of „experimental‟ possibilities for alternative displays—possibilities which may well, because of their own „shakey‟ nature, prove impossible in the context of a settler society.Whole document restricted until Feb. 2014, but available by request, use the feedback form to request access.
37
Carl, Matsuura Wynetta. „Perinatal Correlates of Shaken Baby Syndrome“. Diss., University of Hawaii at Manoa, 2002. http://hdl.handle.net/10125/22047.
Der volle Inhalt der QuelleAnnotation:
Shaken Baby Syndrome (SBS) is a potentially lethal form of child abuse. Primary prevention efforts have been targeted towards educating the general population, especially pregnant women and new parents, about the dangers of shaking. It is hypothesized that there are identifiable perinatal risk fadors for children that make them more at risk for injury from SBS than other forms of Abusive Head Trauma (AHT). All hospitalized children with suspected AHT (n=206) over a 14-year period who were referred to a multidisciplinary child protection center, were identified. The records of 24 children were not included in the study because they were not available for review, the child did not have a primary head injury, or the child was adopted and birth records were not available. Nonaccidental injury was confirmed in 116 of the remaining children. These included 72 (62%) children fitting SBS criteria, and 44 (38%) children identified as having other AHT. Case analysis included review of hospital and multidisciplinary child protection center records. The SBS and AHT groups were compared to separate perinatal risk fadors that might assist in identifying children at increased risk for SBS. Results of the analysis demonstrated that there was no significant difference between groups evident in the perinatal history. These preliminary findings support the follOWing conclusion that in contrast to many published reports, the perinatal information on the child did not provide significant pre-injury risk identifiers. It was concluded that changes in early educational programs and media campaigns are needed to reduce the sequalae of head trauma in infants and children. Programs must focus on AHT in general, rather than only SBS.
38
Söderblom, Fredrik. „Disparity of Early Cretaceous Lamniformes sharks“. Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256605.
Der volle Inhalt der QuelleAnnotation:
The geological range of lamniform sharks stretches from present day species such as Carcharodon carcharias (great white shark) back to the at the moment oldest undoubted fossil finds during the Early Cretaceous. In this paper a geometric morphometric analysis was performed on images of Early Cretaceous lamniform teeth collected from published literature in order to examine the change in disparity (range of morphological variation within a group) throughout the time period. Due to limited availability of published material and time constraints only the Barremian and Albian ages were investigated. The Barremian exhibited tall and narrow tooth morphologies while the Albian showed a wide range of morphological variation including more robust, wide and sometimes triangular shapes but also displayed further specialization of the tall and narrow forms. This change is likely indicative of a dietary and ecological expansion from only eating for example small fish and soft-bodied creatures to a wide range of prey for the group, including larger and more robust animals such as marine turtles and large bony fish. This in combination with the decline of some marine predators as well as the diversification of possible prey is interpreted as that an adaptive radiation of the Lamniformes could have taken place during the latter half of the Early Cretaceous.Morfologisk disparitet är ett mått på hur stor utsträckningen av morfologisk variation är. Detta mått räknas ut genom att jämföra landmärken utplacerade på bilder av föremål som ska undersökas. I detta projekt undersöktes den morfologiska dispariteten hos tänder från håbrandsartade hajar (Lamniformes) under tidig krita. Att just deras tänder undersöktes beror på att den större delen av hajars skelett är gjort av brosk vilket lätt bryts ned efter djuret avlidit. Deras tänder är dock gjorda av ben vilket har lättare att bli bevarat som fossil. Utöver detta så kan formen på tänder beskriva djurs födoval och levnadssätt. Gruppens tänder undersöktes därför även för att belysa eventuella förändringar i diet och ekologi under tidig krita. Resultatet av denna analys visar på en expansion av tandform under denna period från långa och smala tänder under Barremium till en större variation under Albium där även mer triangelformade och robusta tänder dyker upp. Detta har tolkats som en adaptiv artbildningsperiod för gruppen då både nya byten (t.ex. teleostfiskar och havs-sköldpaddor) diversifierade och uppkom samtidigt som vissa marina predatorer (ichthyosaurer och plesiosaurer) minskade i antal under denna tidsperiod. Detta ändrade troligen de selektiva trycken på håbrandsartade hajars tandmorfologi samt lämnade ekologiska nischer öppna som dessa kunde anpassa sig till vilket i sin tur ledde till expansioner i morfologisk disparitet, diet och ekologi.
39
Morison, Christopher Neil. „The dynamics of shaken baby syndrome“. Thesis, University of Birmingham, 2002. http://etheses.bham.ac.uk//id/eprint/64/.
Der volle Inhalt der QuelleAnnotation:
Shaken Baby Syndrome is a form of child abuse estimated to occur to one in 20,000 babies and presumed to occur when a carer cannot cope with a constantly crying child and so gives it a sharp shake. This causes the brain to move within the skull, stretching and possibly tearing the veins that bridge the fluid filled gap. To better understand this condition, experiments were performed to measure the mechanical properties of bridging veins followed by detailed mathematical modelling of the motion of a baby’s brain in response to shaking. Few finite element models of shaken baby syndrome exist, and those either ignore the fluid surrounding the brain or model it as a soft solid. The importance of modelling the fluid properly is demonstrated, and the reliability of MSC.Dytran’s fluid-solid interaction modelling is confirmed. The first three-dimensional finite element model of shaken baby syndrome which accurately includes the cerebrospinal fluid is created and used to estimate tolerance criteria for causing subdural haematoma by shaking. This research concludes that shaking of a baby could produce bridging vein strain close to the tolerance for failure and hence should be considered a possible cause of subdural haematoma.
40
Raja, Vidya. „Shale Shaker Model and Experimental Validation“. University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1343768902.
Der volle Inhalt der Quelle
41
Kobayashi, Junko. „Barton Stone's rejection of Shaker unity“. Online full text .pdf document, available to Fuller patrons only, 2003. http://www.tren.com.
Der volle Inhalt der Quelle
42
Testerman, Christine B. „Molecular Ecology of Globally Distributed Sharks“. Diss., NSUWorks, 2014. https://nsuworks.nova.edu/occ_stuetd/6.
Der volle Inhalt der QuelleAnnotation:
Many sharks have life history characteristics (e.g., slow growth, late age at maturity, low fecundity, and long gestation periods) that make their populations vulnerable to collapse due to overfishing. The porbeagle (Lamna nasus), bull shark (Carcharhinus leucas), great hammerhead (Sphyrna mokarran), and smooth hammerhead (S. zygaena), are all commercially exploited. The population genetic structure of these species was assessed based on globally distributed sample sets using mitochondrial control region (mtCR) sequences and/or nuclear markers. Complex patterns of evolutionary and demographic history were inferred using coalescent and statistical moment-based methods. All four species showed statistically significant genetic partitioning on large scales, i.e., between hemispheres (L. nasus mtCR φST = 0.8273) or oceanic basins (C. leucas nuclear FST = 0.1564; S. mokarran mtCR φST = 0.8745, nuclear FST = 0.1113; S. zygaena mtCR φST = 0.8159, nuclear FST = 0.0495). Furthermore, S. zygaena mtCR sequences indicated statistically significant matrilineal genetic structuring within oceanic basins, but no intrabasin structure was detected with nuclear microsatellites. S. mokarran showed statistically significant genetic structure between oceanic basins with both nuclear and mitochondrial data, albeit with some differences between the two marker types in fine scale patterns involving northern Indian Ocean samples. A microsatellite assessment of C. leucas demonstrated no population structuring within the Atlantic or Indo-Pacific, with the exception that samples from Fiji were differentiated from the remaining Indo- Pacific Ocean locations. In contrast, the L. nasus mitochondrial and nuclear ITS2 sequences revealed strong northern vs. southern hemispheric population differentiation, but no differentiation within these hemispheres. These geographic patterns of genetic structure were used to determine the source of fins obtained from the international fin trade and to develop forensic tools for conservation.
43
Peach, Meredith Belinda. „The pit organs of sharks and rays : structure, distribution, evolution and roles in behaviour“. Phd thesis, School of Biological Sciences, 2001. http://hdl.handle.net/2123/5901.
Der volle Inhalt der Quelle
44
Boccaccio, Anna Elisabetta. „The interaction of conotoxins with voltage gated ion channels influence of membrane potential and ionic milieu on the binding of k-conotoxin [kappa-conotoxin] PVIIA to Shaker K+-channels /“. [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=96368194X.
Der volle Inhalt der Quelle
45
Smith, Lauren E. „Behavioural and neural correlates of hydrostatic pressure sensing in sharks“. Thesis, University of Aberdeen, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=25327.
Der volle Inhalt der QuelleAnnotation:
The normal depth usage of the juvenile lemon shark, Negaprion brevirostris was determined using data storage tags which logged pressure and temperature. Sharks were found to predominantly occupy water depths between the surface and 1m. A diel rhythm and a tidal rhythm were found for the pressure data. Simultaneous acoustic tracking showed shallow water use despite the availability of deeper areas within the sharks’ home ranges. All sharks mainly occupied a narrow range of temperatures (29°C - 31°C) at the high end of their range. Temperature data showed mainly diel rhythms with slight tidal influence. Pressures and temperatures used by the sharks seemed to be affected by size of home range, individual preference and predator avoidance. The behaviour of the lesser spotted dogfish Scyliorhinus canicula was investigated during controlled small steps of pressure inside a hypobaric chamber. Swimming occurred in response to decreasing pressure with increased swimming speed and duration suggesting enhanced sensitivity of the shark pressure sensor within a narrow range between 39mbar above and down to 195mbar below barometric pressure. Further studies using a novel tidal tank system showed that Scyliorhinus synchronised their activity with a 12.5 hour tidal cycle but not with a 9 hour cycle. When different resting depths were made available, they were utilised by dogfish, suggesting an individual preference independent of environmental cues or the presence of the opposite sex. Isolated vestibular systems were challenged over a range of pressures. Hair cell afferent activity showed responses to sinuosoidal cycles and step changes of pressure. Temperature effects are complex but were small compared with pressure effects. Knowledge of the pressure sensor and vertical range used by sharks is essential in the present development of marine protected areas in an attempt to ultimately aid the conservation of sharks.
46
Jain, Prateek. „Multiwavelength Shack-Hartmann Aberrometer“. Diss., Tucson, Arizona : University of Arizona, 2006. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1708%5F1%5Fm.pdf&type=application/pdf.
Der volle Inhalt der Quelle
47
Geswein, Bradley C. (Bradley Carl). „Optimization of shake inspections“. Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66069.
Der volle Inhalt der QuelleAnnotation:
Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; in conjunction with the Leaders for Global Operations Program at MIT, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 88-89).
The Boeing 737 program has recently announced an increase in the production rate from 31.5 airplanes per month to 35 airplanes per month. Throughout the production value stream, opportunities to improve quality and reduce flow time are being thoroughly investigated. This thesis contributes to the investigation by focusing on improving the inspection process through a prototype computer data collection tool and the formation of a corrective action team.
by Bradley C. Geswein.
S.M.
M.B.A.
48
Del, Castillo Pereyra Edgaard Uriel, Montes Flor de María Horna, Villasis Arturo Herbert Koenig und León Héctor Alonso Pinillos. „Batido Saludable Wawa Shake“. Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626218.
Der volle Inhalt der QuelleAnnotation:
El presente trabajo de investigación se desarrolla con la finalidad de validar la viabilidad de la fabricación por servicio tercerizado y comercialización de batidos saludables con la marca Wawa Shake que es una alternativa de alimento saludable para prevenir la obesidad en los niños y adultos, y para las personas que son celiacos e intolerantes a la lactosa.
Cabe aclarar, que el proyecto se sustenta en una investigación realizada en el segmento de mercado, donde se identifica que existe un target de 38,527 consumidores dispuestos a comprar los batidos saludables Wawa Shake con una frecuencia de 1 a 3 veces al mes. Por ello, para atender la demanda del mercado se planifica realizar la distribución a través del canal directo e indirecto.
Asimismo, el proceso de producción de los batidos se realizará según los lineamientos del sistema de inocuidad alimentaria de la Norma ISO 22000 para garantizar la calidad del producto.
Por otro lado, la viabilidad y rentabilidad del proyecto a cinco años está sustentado en base al resultado del valor actual neto que es 148,636 soles, lo cual, indica que los flujos financieros proyectados a futuro que han sido descontados con la tasa de COK, traídos al año presente generan una rentabilidad de 148, 636 soles para los accionistas y una tasa interna de retorno del 50% mayor a 12.62% que es el costo de oportunidad del accionista.The present research work was developed in order to validate the viability of the outsourcing manufacture and marketing of healthy shakes with the Wawa Shake brand, wich is an alternative of healthy food to prevent obesity in kids and adults, as well as for people who have celiac disease and is intolerant to lactose. It should be noted that this project is based on research carried out in the market segment, where it is identified a target of 38, 527 consumers willing to buy Wawa Shake healthy shakes with a frequency of 1 to 3 times per month. Therefore, to meet market demand, distribution is planned through the direct and indirect channel. Likewise, the production process of the shakes will be carried out according to the guidelines of the Food Safety Norm ISO 22000 to guarantee the quality of the product. On the other hand, the viability and profitability of the five-year project is based on the result of the net present value which is 148,636 soles, which indicates that the future projected financial flows that have been discounted with the COK rate, brought to the present year, they generate a profitability of S /. 148, 636 soles for shareholders and a 50% internal rate of return that is greater than 12.62%, which is the opportunity cost for shareholder.
Trabajo de investigación
49
Di, Santo Valentina. „Is post-feeding thermotaxis advantageous in elasmobranchs?“ [Pensacola, Fla.] : University of West Florida, 2009. http://purl.fcla.edu/fcla/etd/WFE0000173.
Der volle Inhalt der QuelleAnnotation:
Thesis (M.S.)--University of West Florida, 2009.Submitted to the Dept. of Biology. Title from title page of source document. Document formatted into pages; contains 49 pages. Includes bibliographical references.
50
Gubili, Chryssoula. „Application of molecular genetics for conservation of the great white shark, Carcharodon carcharias, L. 1758“. Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources. Restricted: no access until Dec. 31, 2009, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=26045.
Der volle Inhalt der Quelle