Dissertations / Theses on the topic 'Aquatic invertebrates'
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Hayward, Eva. "Envisioning invertebrates and other aquatic encounters /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.
Full textPeterson, Eric W. "Fate and transport of 17 [beta]-Estradiol in karst aquifers /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3060131.
Full textNetherton, Melanie Jane. "Uptake and metabolism of pharmaceuticals in aquatic invertebrates." Thesis, University of York, 2011. http://etheses.whiterose.ac.uk/2349/.
Full textChristman, Van D. "Ecology of benthic macroinvertebrates in experimental ponds." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134927/.
Full textMacdonald, Hannah. "Population genetics and demographic resilience in three aquatic invertebrates." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/100387/.
Full textCORTEZ, FERNANDO S. "Avaliacao ecotoxicologica do farmaco triclosan para invertebrados marinhos." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9946.
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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
Hopson, Adrienne M. "Impacts of Anthropogenic Noise on Aquatic Invertebrates in Wetland Habitats." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent15645874111271.
Full textTurner, Patricia Anne. "Macroinvertebrate drift along an elevational and stream size gradient in a southern Appalachian stream." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06302009-040521/.
Full textBecker, Lindsey M. "Aquatic invertebrate, vegetation, and hydrology assessment of Long Meadow Lake prior to effects of hydrological manipulations /." Link to full text, 2007. http://epapers.uwsp.edu/thesis/2007/Becker.pdf.
Full textNachtrieb, Julie G. Kennedy James H. "The impact of invertebrates to four aquatic macrophytes Potamogeton nodosus, P. illinoensis, Vallisneria americana and Nymphaea mexicana /." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-9058.
Full textSambles, Christine. "Derivation of the molecular basis of endocrine disruption in aquatic invertebrates." Thesis, Cardiff University, 2007. http://orca.cf.ac.uk/54659/.
Full textWilliams, Kristi. "Macroinvertebrate and crayfish communities in the Meramec River drainage basin an investigation at multiple spatial scales /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4580.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (June 27, 2007) Includes bibliographical references.
Nachtrieb, Julie Graham. "The impact of invertebrates to four aquatic macrophytes: Potamogeton nodosus, P. illinoensis, Vallisneria americana and Nymphaea mexicana." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9058/.
Full textGulish, Matthew C. "SEASONAL VARIABILITY OF AQUATIC AND TERRESTRIAL INVERTEBRATES IN A FORESTED STREAM ECOSYSTEM." Kent State University Honors College / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1544453804036894.
Full textMoyo, Sydney. "Aquatic–terrestrial trophic linkages via riverine invertebrates in a South African catchment." Thesis, Rhodes University, 2016. http://hdl.handle.net/10962/54427.
Full textPestana, João Luís Teixeira. "Predation risk versus pesticide exposure: effects of fear and loathing on aquatic invertebrates." Doctoral thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/955.
Full textOs organismos aquáticos apresentam respostas plásticas à presença de predadores que são induzidas por pistas químicas presentes na água. Estas respostas além de minimizar os efeitos de predação, têm também custos associados que podem incluir alterações na tolerância às variações ambientais tais como contaminação por pesticidas. Os efeitos dos pesticidas em sistemas naturais resultam assim da toxicidade mas também do efeito nas interacções predador-presa. Apesar de extremamente relevante nomeadamente para análises de risco, as possíveis interacções entre contaminação por pesticidas e pressão predatória, não estão ainda esclarecidas nem tão pouco os mecanismos comportamentais e fisiológicos que as medeiam. O principal objectivo da investigação aqui apresentada foi assim avaliar o efeito de um insecticida, imidacloprid, em diferentes espécies de invertebrados aquáticos sujeitos a diferentes níveis de risco de predação. Numa primeira fase o efeito do Imidacloprid nas comunidades naturais foi avaliado com base em estudos de mesocosmos conjuntamente com ensaios ecotoxicológicos baseados em respostas individuais. Pulsos de concentrações relevantes de imidacloprid revelaram-se extremamente tóxicas para insectos aquáticos. A alimentação e metabolismo de uma espécie de plecóptero, Pteronarcys comsctocki, mostraram-se como respostas sub-letais sensíveis e assim ferramentas válidas em termos de biomonitorização dos efeitos do pesticida. Usando um clone de Daphnia magna foi também avaliada a relativa importância das substâncias de alarme e de kairomonas de truta (Salmo trutta) como mediadores de respostas anti predação em Daphnia. A combinação de kairomonas e substâncias de alarme mostrou ser necessária para uma resposta mais forte induzindo alterações no comportamento, fisiologia e história de vida de Daphnia. Esta combinação de sinais químicos pode ser assim usada para avaliar efeitos de intimidação ou de risco de predação. Utilizando metodologias ecotoxicológicas padronizadas avaliaram-se em laboratório as respostas de D. magna, Chironomus riparius e Sericostoma vittatum, expostos a concentrações sub-letais de Imidacloprid bem como diferentes níveis de risco de predação. Observaram-se efeitos significativos de concentrações relevantes de Imidacloprid na fisiologia e comportamento dos insectos enquanto que D. magna se mostrou muito mais tolerante respondendo apenas a concentrações bastante altas de imidacloprid. A exposição combinada a ambos os stressores foi avaliada considerando mecanismos de acção ecotoxicológicos dos dois stressores e usando diferentes abordagens nomeadamente modelos de referência para misturas químicas e análises de variância. No caso dos insectos, foram observados efeitos aditivos na maioria dos parâmetros testados sendo que a exposição a concentrações sub-letais de Imidacloprid inibiu algumas das respostas anti predatórias com potenciais efeitos em termos de mortalidade devido a predação em campo. Para D. magna a exposição simultânea aos dois stressores mostrou desvios relativamente aos modelos de referência que incluem sinergismo para algumas dos parâmetros testados. Os resultados obtidos mostram que invertebrados sujeitos a elevada pressão predatória são mais afectados por concentrações sub-letais de pesticidas. Dado que muitas espécies de invertebrados são simultaneamente sujeitas ao risco de predação e à contaminação por pesticidas, o estudo do efeitos combinados destes dois factores nas comunidades aquáticas, é extremamente importante para melhor prever e interpretar os efeitos ecológicos da contaminação por pesticidas em sistemas naturais.
Aquatic species rely on plastic traits to defend themselves against predators. The induction of these antipredator defences is mediated by water-borne chemical cues. These induced defences have associated costs which can include decreased tolerance to future environmental change such as pesticide contamination. The effects of pesticides in natural systems can be a result not only of their direct toxicity but also of their indirect effects on predator-prey interactions. Despite their relevance for risk assessment, the interactive effects of pesticide contamination and predation stress are poorly understood because the underlying behavioural and physiological mechanisms are largely unstudied. The main objective of this thesis was therefore to assess the toxic effects of imidacloprid, a widely-used insecticide, on different invertebrate species under different levels of predation risk. First, the effects of Imidacloprid on freshwater communities were assessed using field-deployed mesocosms and organism level bioassays. Pulses of environmentally-relevant concentrations of imidacloprid were highly toxic to non-target aquatic insects. Feeding and metabolic responses of a stonefly species Pteronarcys comsctocki, proved to be a good early warning indicator of pesticide detrimental effects. Using a clone of Daphnia magna, the relative importance of alarm cues and fish kairomones (Salmo trutta) were studied as initiators of Daphnia antipredator defences. Although behavioural responses could be triggered by single cues, a combination of alarm cues and predator-specific compounds induced stronger responses and were necessary to induce complete antipredator responses (behavioural, physiological and in the life-history) of daphnids. A combination of both types of chemical cues could thus be used as surrogate for the effects of intimidation posed by predators. Using standardized laboratory toxicological methodologies different responses of D. magna, Chironomus riparius and Sericostoma vittatum d to sublethal concentrations of imidacloprid were assessed under different levels of predation risk. Significant effects of environmentally-relevant concentrations of imidacloprid were observed on insect behaviour and physiology. Higher concentrations of imidacloprid were necessary to elicit effects on D. magna, relative to the other species tested. Considering the ecotoxicological mode of action of imidacloprid and perceived predation risk, the effects of simultaneous exposure to both stressors were assessed using different approaches with additive reference models and analysis of variance. Both stressors acted additively for most responses tested in the different insect species with exposure to sublethal concentrations of imidacloprid also inhibiting antipredator responses with potential negative consequences in terms of mortality from predation in the field. For D. magna, exposure to both stressors showed significant deviations from the reference models results including synergism for same endpoints tested. The results obtained provide insight into the conditions under which interactions between these stressors are likely to occur: invertebrates such as daphnids, midges and caddisflies living under fish predation stress will be more affected by sub-lethal concentrations of Imidacloprid than populations at low predatory pressure. Since predation risk and pesticides can be considered 'similarly-acting' stressors in an ecological sense, studying both types of stress within the same mechanistic framework can be of great value providing compatible data for modelling and allowing improved interpretation of ecological effects of relevant stressors.
Cappo, Michael. "Frogs as predators of organisms of aquatic origin in the Magela Creek system, Northern Territory /." Title page, contents and summary only, 1986. http://web4.library.adelaide.edu.au/theses/09SM/09smc249.pdf.
Full textBlakely, Tanya Jillaine. "Tree holes as habitat for aquatic and terrestrial invertebrates in mixed broadleaf-podocarp rainforest, New Zealand." Thesis, University of Canterbury. Biological Sciences, 2008. http://hdl.handle.net/10092/1698.
Full textOno, Erika Ramos. "Efeito da retirada da mata ripária sobre a estrutura dos grupos funcionais de alimentação em assembleias de macroinvertebrados bentônicos." Botucatu, 2018. http://hdl.handle.net/11449/153196.
Full textResumo: Macroinvertebrados bentônicos são comumente utilizados como bioindicadores da qualidade do habitat em riachos. Estes estudos podem ser realizados através de uma abordagem taxonômica ou funcional da comunidade. Na abordagem funcional, a classificação em grupos funcionais de alimentação (FFG - Functional Feeding Groups) baseia-se nos mecanismos de apreensão do alimento e nos recursos consumidos. O estudo teve o objetivo de verificar o efeito de alterações na mata ripária sobre a estrutura dos FFG em comunidades de macroinvertebrados bentônicos. Estudamos 36 riachos, separados em três tipos de entorno: com mata ripária nas duas margens (florestado), com mata em uma das margens e pastagem na outra (intermediário) e sem mata nas duas margens (pastagem). A análise das variáveis ambientais indicou uma diferenciação dos riachos florestados e da maioria dos intermediários devido a maiores valores de material alóctone e oxigênio dissolvido e menores de vegetação nas margens e substrato fino, quando comparados aos de pastagem. A análise da abundância da fauna em cada FFG indicou uma diferença entre entornos somente para coletores, com valores significativamente menores nos florestados quando comparados aos de pastagem e intermediários. Já a análise aplicada aos dados de presença-ausência mostrou diferença entre entornos somente para os predadores, indicando diferença significativa na composição entre riachos florestados e de pastagem. A análise da diferenciação dos entornos considerando... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Benthic macroinvertebrates are commonly used as bioindicators of the habitat quality in streams. These studies may be carried out through analyzes with taxonomic or functional approach of the assemblage. In the functional approach, the classification of macroinvertebrates into Functional Feeding Groups (FFG) is based on the mechanisms of food´s apprehension and the resources consumed. This study aimed to verify the effect of the changes in riparian forest upon the structure of FFG in assemblages of benthic macroinvertebrates. We studied 36 streams, separated in three types of land use: with riparian forest on both banks (forest), with forest on one of the banks and pasture on another (intermediate) and without forest on both banks (pasture). The analysis of environmental variables showed a differentiation of the forest and most of the intermediate streams due to high values of allochthonous material and dissolved oxygen and low amounts of vegetation on the banks and unconsolidated substrate, when compared to pasture streams. The analysis of the abundance of the fauna in each FFG indicated a difference between types of land use only for gathering collectors, with significantly low abundance in forested streams when compared to pasture and intermediate ones. On the other hand, analysis applied to the presence-absence data showed distinction between land uses only for predators, indicating significant difference in the composition of forest and pasture streams. The analysis of t... (Complete abstract click electronic access below)
Mestre
Contardo, Jara Valeska. "Physiological biomarkers in moderate sensitive aquatic invertebrates for water quality assessment in urban watercourses." Berlin dissertation.de, 2008. http://d-nb.info/990963586/04.
Full textBenier, Jean-Michel. "The role of farm dams as refugia for aquatic invertebrates in a salinised landscape, south Western Australia." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2004. https://ro.ecu.edu.au/theses/828.
Full textPalmer, Shiree. "The ecological role of a common seastar (Patiriella spp.) within intertidal cobble fields : a thesis submitted to the Victoria University of Wellington in partial fulfilment of the requirements for the degree of Master of Science in Marine Biology /." ResearchArchive@Victoria e-Thesis, 2010. http://hdl.handle.net/10063/1240.
Full textMitchell, Richard Morgan Feminella Jack W. "The influence of coarse woody debris, disturbance, and restortion on biological communities in sandy coastal plain streams." Auburn, Ala., 2009. http://hdl.handle.net/10415/2022.
Full textArundel, Helen Patricia, and lswan@deakin edu au. "Invertebrate larval dynamics in seasonally closed estuaries." Deakin University. School of Ecology and Environment, 2003. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20061011.142951.
Full textHarms, Nathan Earl. "Comparison of Heteranthera Dubia (Jacq.) MacM.-associated Macroinvertebrates Between Georgraphical Regions in the United States." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc28427/.
Full textWale, Matthew A. "The effects of anthropogenic noise playbacks on marine invertebrates." Thesis, Edinburgh Napier University, 2018. http://researchrepository.napier.ac.uk/Output/1255476.
Full textAtienzar, Franck Andre. "Development of the random amplified polymorphic DNA (RAPD) technique to measure the effects of genotoxinsin aquatic organisms." Thesis, University of Plymouth, 2000. http://hdl.handle.net/10026.1/1757.
Full textMcLenaghan, Natalie Ann. "Benthic macroinvertebrate diversity in a shallow estuary : controls on nutrient and algal dynamics /." Online version of thesis, 2009. http://hdl.handle.net/1850/9704.
Full textScholl, Eric. "The influence of water velocity on aquatic macroinvertebrate functional structure and production in the Cache River in Southern Illinois." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1158.
Full textLeonard, Norman. "The effects of the invasive exotic Chinese tallow tree (Triadica sebifera) on amphibians and aquatic invertebrates." ScholarWorks@UNO, 2008. http://scholarworks.uno.edu/td/656.
Full textDeHaan, Maureen. "The possible effects of peat mining on aquatic invertebrates in the Lake Muir Wetlands, Western Australia." Thesis, DeHaan, Maureen (1986) The possible effects of peat mining on aquatic invertebrates in the Lake Muir Wetlands, Western Australia. Honours thesis, Murdoch University, 1986. https://researchrepository.murdoch.edu.au/id/eprint/40888/.
Full textJatar, Muriel M. "Assessing the Effect of Selenium on the Life-cycle of Two Aquatic Invertebrates: 'Ceriodaphnia dubia' and 'Chironomus dilutus'." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24036.
Full textHenkanaththegedara, Sujan Maduranga. "Ecological Complexity of Non-Native Species Impacts in Desert Aquatic Systems." Diss., North Dakota State University, 2012. https://hdl.handle.net/10365/26697.
Full textBurdon, Francis John. "The effects of stream productivity on aquatic-terrestrial linkages." Thesis, University of Canterbury. Biological Sciences, 2004. http://hdl.handle.net/10092/1415.
Full textJohnson, Philip C. (Philip Charles). "Impacts of the Pyrethroid Insecticide Cyfluthrin on Aquatic Invertibrate Populations in Outdoor Experimental Tanks." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc279350/.
Full textDudley, Melissa B. Chambliss C. Kevin. "Accumulation of trifluralin and trinitrotoluene (TNT) in two aquatic invertebrates formation and persistence of unextractable biotransformation products /." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5155.
Full textAgatz, Annika. "Consequences of short-term feeding inhibition from exposure to pesticides for individuals and populations of aquatic invertebrates." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/5538/.
Full textBirnbaum, Jenny Sue. "Associations of watershed and instream environmental factors with aquatic macrofauna in tributaries of the Pedernales River, Texas." Thesis, Texas A&M University, 2005. http://hdl.handle.net/1969.1/2411.
Full textSantos, Liliana Raquel Assunção. "Avaliação de risco ambiental de pesticidas para ecossistemas aquáticos - representatividade das espécies padrão de invertebrados." Master's thesis, ISA/UTL, 2012. http://hdl.handle.net/10400.5/5331.
Full textWith the main aim of verifying whether Daphnia magna is sufficient for the evaluation of the environmental risk of pesticides to aquatic ecosystems, toxicity values of 218 insecticides were analyzed. For each one the relative tolerance (Trel) value was calculated to compare the sensitivity of species from different taxonomic groups with that of D. magna. The taxonomic groups were grouped in arthropods, non-arthropod invertebrates, fish, algae/macrophytes and based on Trel values the species sensitivity distribution (SSD) were defined. For the arthropods the influence of the mode of action (MOA) on vulnerability to the insecticide was also analyzed. Still in the arthropods group, for each species, the class, order and family they belong to were identified. To check the necessity of inclusion of a second species studies of relationship were performed, between D. magna, Americamysis bahia and Chironomus riparius. As far as the SSD curves are concerned, for the different groups the most sensitive one was the arthropods group in both values of EC50 and NOEC. Taking into consideration MOA the group of neonicotinoids was the most sensitive one in EC50 case and the GABA – gated chloride channel antagonists in NOEC. The most sensitive taxonomical group was Mysida and it was the combination of Daphnia plus A. Bahia that generated the greater percentage of protection.
Whelly, Mark P. "Aquatic invertebrates in wetlands of the oil sands region of northeast Alberta, Canada, with emphasis on Chironomidae (Diptera)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0015/MQ52675.pdf.
Full textSeitz, Frank [Verfasser], Mirco [Akademischer Betreuer] Bundschuh, and Ralf [Akademischer Betreuer] Schulz. "Factors triggering the ecotoxicity of metal-based nanoparticles towards aquatic invertebrates / Frank Seitz. Betreuer: Mirco Bundschuh ; Ralf Schulz." Landau : Universität Koblenz-Landau, Campus Landau, 2015. http://d-nb.info/1107775604/34.
Full textPUSCEDDU, FABIO H. "Avaliacao ecotoxicologica do farmaco triclosan para invertebrados de agua doce com enfase em ensaios com sedimento marcado ('SPIKED SEDIMENT')." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9498.
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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
Drinkard, Maureen Katherine. "IMPACTS OF A FLOOD PULSING HYDROLOGY ON PLANTS AND INVERTEBRATES IN RIPARIAN WETLANDS." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1342805313.
Full textAmaning, Kwarteng. "Streamwater and sediment chemistry of Ohio's Western Allegheny Plateau ecoregion and their relation to aquatic life." Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1153757100.
Full textLüderwald, Simon [Verfasser], Mirco [Akademischer Betreuer] Bundschuh, Mirco [Gutachter] Bundschuh, and Ralf [Gutachter] Schulz. "Environmental processes transforming inorganic nanoparticles: implications on aquatic invertebrates / Simon Lüderwald ; Gutachter: Mirco Bundschuh, Ralf Schulz ; Betreuer: Mirco Bundschuh." Landau : Universität Koblenz-Landau, Campus Landau, 2020. http://d-nb.info/120442733X/34.
Full textMoles, Sánchez Juan. "Antarctic heterobranch molluscs: diving into their challenging ecology, taxonomy, and systematics." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/399046.
Full textEsta tesis doctoral abarca tres aspectos relevantes de los heterobranquios antárticos: su ecología, taxonomía y sistemática. La primera sección trata sobre interacciones ecológicas en varios nudibranquios. En el capítulo 1, caracterizamos químicamente un nuevo producto natural (un homosesterterpeno) denominado granuloside, de Charcotia granulosa Vayssière, 1906; cabe destacar que ésta es la primera vez que se halla este tipo de compuestos en organismos marinos. En el capítulo 2, evaluamos el origen, función y distribución del granuloside en dicho nudibranquio; hallamos estructuras glandulares probablemente encargadas de acumular granuloside como mecanismo defensivo frente a depredadores, como la estrella de mar Odontaster validus Koehler, 1906. Además, sugerimos que C. granulosa biosintetiza granuloside de novo. Este capítulo refleja cómo los organismos de latitudes polares poseen estrategias defensivas similares a los de las zonas templadas y tropicales. En el capítulo 3, se describe una nueva especie de copépodo, Anthessius antarcticus n. sp., ectosimbionte de C. granulosa; este es el primer registro de este tipo de asociaciones en la Antártida y la primera vez que se describe este género viviendo en un nudibranquio. En el capítulo 4, estudiamos el desarrollo de dos antobranquios, Doris kerguelenensis (Bergh, 1884) y Bathydoris hodgsoni Eliot, 1907, con desarrollo intracapsular; aportamos nuevos datos morfológicos y anatómicos sobre las puestas, huevos y embriones a lo largo de su desarrollo; también estudiamos el estadio ontogenético en el que aparecen sus productos naturales; concluimos que ambas especies tienen periodos de desarrollo de varios años, sus embriones se defienden físicamente gracias a la gruesa cápsula del huevo, mientras que los juveniles ya sintetizan sus propios compuestos defensivos. En la segunda sección de la tesis, nuestros estudios taxonómicos y sistemáticos interdisciplinares, incluyendo técnicas de histología, tomografía, microscopía electrónica y moleculares, han permitido la descripción de tres especies nuevas de heterobranquios. En el capítulo 5, se aporta evidencia taxonómica para establecer una nueva familia (Newnesiidae), y la descripción de una nueva especie de Cephalaspidea (Newnesia joani n. sp.) con distribución euribática y circumpolar; este descubrimiento traza el origen de los cefalaspideos (distribuidos en todo el mundo) hasta la Antártida. En el capítulo 6, realizamos una reconstrucción anatómica tridimensional (3D) y comparamos los dos nudibranquios Doto antarctica y la nueva especie Doto carinova n. sp.; su filogenia revela interesantes cuestiones relativas a la evolución del sistema reproductivo en este género; además, las reconstrucciones 3D revelan la existencia de posibles neuronas gigantes asociadas al sistema nervioso, hasta ahora desconocidas en este género. Por último, en el capítulo 7, proporcionamos nuevas pruebas de una distribución geográfica bipolar, mediante la descripción de una nueva especie de nudibranquio, Doridunculus punkus n. sp., usando exclusivamente técnicas tomográficas no destructivas. Nuestros resultados ponen de manifiesto la necesidad y la relevancia de utilizar enfoques multidisciplinares para el estudio de la biodiversidad y las interacciones ecológicas en moluscos heterobranquios, en especial en un continente todavía poco estudiado, como es la Antártida.
Bergamino, Roman Leandro. "Spatial and temporal variations in trophic connectivity within an estuarine environment : benthic-pelagic and terrestrial-aquatic linkages via invertebrates and fishes." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017799.
Full textLeiva, Martinez Carlos. "Population genomics, phylogeographic history, and evolutionary patterns in Antartic shallow-water benthic invertebrates." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/668297.
Full textGray, Duncan Peter. "Ecological connectivity in braided riverscapes." Thesis, University of Canterbury. School of Biological Sciences, 2010. http://hdl.handle.net/10092/4181.
Full textChandler, Houston Cawthorn. "The Effects of Climate Change and Long-term Fire Suppression on Ephemeral Pond Communities in the Southeastern United States." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51190.
Full textMaster of Science