Relevant bibliographies by topics / Amphibians

Academic literature on the topic 'Amphibians'

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Published: 4 June 2021
Last updated: 1 August 2024

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Journal articles on the topic "Amphibians"

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Dandekar, Nikhil, Varun Kherr, Chaitanya Risbud, Mayuresh Kulkarni, Makarand Ketkar, Srushti Bhave, Pushkar Pansalkar, Shauri Sulakhe, Sunil Limaye, and Anand Padhye. "Evaluation of the Amphibian Fauna of the Semi-arid and Arid Grassland Habitats in and around the Mayureshwar, Rehekuri, and Karmala Wildlife Sanctuaries in Maharashtra, India." Reptiles & Amphibians 27, no. 2 (July 16, 2020): 129–36. http://dx.doi.org/10.17161/randa.v27i2.14023.

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Few studies document amphibian species composition from arid and semiarid environments. Scatteredbodies of water in the semi-arid and arid landscape around Pune, Maharashtra, India, could be viable amphibian habitats; however; information on amphibians using these bodies of water is not available. In a preliminary study, we assessed the amphibian diversity and population status in three wildlife sanctuaries and surrounding areas near Pune. We also compared the use of artificial and natural ponds by amphibians and surveyed the amphibians for the presence of the chytrid fungus.
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Liando, Greace Kurniawati, Deidy Yulius Katili, and Lalu Wahyudi. "KEANEKARAGAMAN AMPHIBIA DI KAMPUS UNIVERSITAS SAM RATULANGI." PHARMACON 8, no. 3 (August 28, 2019): 601. http://dx.doi.org/10.35799/pha.8.2019.29337.

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Amphibia is a vertebrate animal that lives in two realms: water and land. Amphibia consists of three orders, namely Caecilia, Caudata and Anura. Most amphibians have limbs such as limbs and fingers. This research aims to determine the extent of amphibian diversity that exists at the University Sam Ratulagi Manado campus based on the value of Shannon-Wiener index. The study used purposive sampling methods conducted in September-November 2017. Based on the research results there are six types of amphibia found namely, Peltophryne Lemur, Phrynoidis asper, Ingerophrynus biporcatus, Bufo melanostictus, Bufo bankorensis, and Bufo Gargarizans. The most widely discovered amphibian is Phrynoidis asper and the fewest found is Bufo bankorensis. The diversity index of amphibians observed on the campus of Unsrat is included in the medium with the value of Indeks1,783.Keywords: Diversity, Amphibia.ABSTRAKAmphibia merupakan hewan bertulang belakang yang hidup di dua alam yaitu air dan darat. Amphibia terdiri dari tiga ordo, yaitu Caecilia, Caudata dan Anura. Sebagian besar amphibia mempunyai anggota gerak seperti tungkai dan jari-jari. Penelitian ini bertujuan untuk menentukan tingkat keanekaragaman amphibia yang ada di Kampus Universitas Sam Ratulagi Manado berdasarkan nilai indeks Shannon-Wiener. Penelitian ini menggunakan metode purposive sampling yang dilaksanakan pada bulan September-November 2017. Berdasarkan hasil penelitian terdapat enam jenis amphibia yang ditemukan yaitu, Peltophryne lemur, Phrynoidis asper, Ingerophrynus biporcatus, Bufo melanostictus, Bufo bankorensis, dan Bufo gargarizans. Amphibia yang paling banyak ditemukan adalah Phrynoidis asper dan yang paling sedikit ditemukan adalah Bufo bankorensis. Indeks keanekaragaman dari amphibia yang diamati terdapat di kampus Unsrat termasuk dalam kategori sedang dengan nilai indeks1,783.Kata kunci: Keanekaragaman, Amphibia.
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Manenti, Raoul, and Roberta Pennati. "Environmental factors associated with amphibian breeding in streams and springs: effects of habitat and fish occurrence." Amphibia-Reptilia 37, no. 2 (2016): 237–42. http://dx.doi.org/10.1163/15685381-00003040.

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Streams are among the most threatened aquatic habitats for amphibians. Amphibians often demonstrate a complex community structure and investigations are mainly performed on pond-dwelling species, whereas data regarding stream-dwelling species is still scarce. The aim of this study was to evaluate the relevance of stream features and the effects of the occurrence of predatory fish on the community structure of amphibians. To assess the occurrence of breeding among amphibians (in Northern Apennine streams), sampling was performed on 57 stream and spring sites between early March and late May 2014. The research process recorded the presence of four breeding species (Salamandra salamandra, Salamandrina perspicillata, Bufo bufo, and Rana italica) and discovered that the community structures of amphibians were significantly connected to different habitat features. The investigation showed that fish presence is the primary habitat feature that affects the communities of amphibians: B. bufo was the only amphibian species not affected by fish presence, while the other species avoided sites with fish. Sun exposure, depth of water and slope inclination played important roles in affecting amphibian breeding. Our study confirms that fish presence in small streams can be detrimental for different amphibian species.
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Kim, Hyun Woo, Pradeep Adhikari, Min Ho Chang, and Changwan Seo. "Potential Distribution of Amphibians with Different Habitat Characteristics in Response to Climate Change in South Korea." Animals 11, no. 8 (July 23, 2021): 2185. http://dx.doi.org/10.3390/ani11082185.

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Amphibian species are highly vulnerable to climate change with significant species decline and extinction predicted worldwide. However, there are very limited studies on amphibians in South Korea. Here, we assessed the potential impacts of climate change on different habitat groups (wetland amphibians, Group 1; migrating amphibians, Group 2; and forest-dwelling amphibians, Group 3) under future climate change and land cover change in South Korea using a maximum entropy modelling approach. Our study revealed that all amphibians would suffer substantial loss of suitable habitats in the future, except Lithobates catesbeianus, Kaloula borealis, and Karsenia koreana. Similarly, species richness for Groups 2 and 3 will decline by 2030, 2050, and 2080. Currently, amphibian species are widely distributed across the country; however, in future, suitable habitats for amphibians would be concentrated along the Baekdudaegan Mountain Range and the southeastern region. Among the three groups, Group 3 amphibians are predicted to be the most vulnerable to climate change; therefore, immediate conservation action is needed to protect them. We expect this study could provide crucial baseline information required for the government to design climate change mitigation strategies for indigenous amphibians.
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Lips, Karen R. "Overview of chytrid emergence and impacts on amphibians." Philosophical Transactions of the Royal Society B: Biological Sciences 371, no. 1709 (December 5, 2016): 20150465. http://dx.doi.org/10.1098/rstb.2015.0465.

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Chytridiomycosis is an emerging infectious disease of amphibians that affects over 700 species on all continents where amphibians occur. The amphibian–chytridiomycosis system is complex, and the response of any amphibian species to chytrid depends on many aspects of the ecology and evolutionary history of the amphibian, the genotype and phenotype of the fungus, and how the biological and physical environment can mediate that interaction. Impacts of chytridiomycosis on amphibians are varied; some species have been driven extinct, populations of others have declined severely, whereas still others have not obviously declined. Understanding patterns and mechanisms of amphibian responses to chytrids is critical for conservation and management. Robust estimates of population numbers are needed to identify species at risk, prioritize taxa for conservation actions, design management strategies for managing populations and species, and to develop effective measures to reduce impacts of chytrids on amphibians. This article is part of the themed issue ‘Tackling emerging fungal threats to animal health, food security and ecosystem resilience’.
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Grogan, Laura F., Josephine E. Humphries, Jacques Robert, Chantal M. Lanctôt, Catherine J. Nock, David A. Newell, and Hamish I. McCallum. "Immunological Aspects of Chytridiomycosis." Journal of Fungi 6, no. 4 (October 19, 2020): 234. http://dx.doi.org/10.3390/jof6040234.

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Amphibians are currently the most threatened vertebrate class, with the disease chytridiomycosis being a major contributor to their global declines. Chytridiomycosis is a frequently fatal skin disease caused by the fungal pathogens Batrachochytrium dendrobatidis (Bd) and Batrachochytrium salamandrivorans (Bsal). The severity and extent of the impact of the infection caused by these pathogens across modern Amphibia are unprecedented in the history of vertebrate infectious diseases. The immune system of amphibians is thought to be largely similar to that of other jawed vertebrates, such as mammals. However, amphibian hosts are both ectothermic and water-dependent, which are characteristics favouring fungal proliferation. Although amphibians possess robust constitutive host defences, Bd/Bsal replicate within host cells once these defences have been breached. Intracellular fungal localisation may contribute to evasion of the induced innate immune response. Increasing evidence suggests that once the innate defences are surpassed, fungal virulence factors suppress the targeted adaptive immune responses whilst promoting an ineffectual inflammatory cascade, resulting in immunopathology and systemic metabolic disruption. Thus, although infections are contained within the integument, crucial homeostatic processes become compromised, leading to mortality. In this paper, we present an integrated synthesis of amphibian post-metamorphic immunological responses and the corresponding outcomes of infection with Bd, focusing on recent developments within the field and highlighting future directions.
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Agustini, Putu Linda, Mohammad Liwa Ilhamdi, and Gito Hadiprayitno. "Keanekaragaman Spesies Amfibi (Ordo Anura) di Kawasan Taman Wisata Alam Kerandangan Kabupaten Lombok Barat." Bioscientist : Jurnal Ilmiah Biologi 12, no. 1 (June 30, 2024): 577. http://dx.doi.org/10.33394/bioscientist.v12i1.11030.

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Amphibians are vertebrate animals that generally live in humid forest areas. Amphibians can be used as environmental bioindicators because of their sensitivity to environmental changes such as water pollution and destruction of native habitats. Anura is one of the group of amphibians. The occurrence of microclimate changes caused by the dynamics of biotic and abiotic factors can result in changes in the amphibian population in Kerandangan Nature Park. Recording and identifying the presence of amphibians will help maintain limited populations and potentially be managed for the better. The purpose of this study was to analyze the diversity index of amphibian species (order anura) in Kerandangan Nature Tourism Park. The method used is VES (Visual Encounter Survey). The research was conducted in 4 blocks, namely intensive utilization blocks, limited utilization, rehabilitation and protection. Data were analyzed using the Shanon-Wienner diversity index. The results of the study found 3 species of amphibians (order anura) namely Limnonectes kadarsani, Duttaphrynus melanostictus, and Polypedates leucomystax. with an amphibian diversity index (Ordo Anura) in Kerandangan Nature Tourism Park is Hꞌ = 1.07.
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Eijkelkamp, Michaël A., Mirjam J. Borger, Ruben Kluit, and Jan Komdeur. "Extremely low amphibian roadkill probability on busy bicycle paths." Herpetological Journal 33, no. 1 (January 1, 2023): 1–5. http://dx.doi.org/10.33256/33.1.115.

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Road mortality can have a significant negative impact on amphibian population survival. Amphibian roadkill and how to avoid it are therefore widely studied, mostly on car roads but limitedly on bicycle paths. We investigated whether amphibian mortality on bicycle paths in Bargerveen, a Dutch Natura 2000 site, was affected by the number of passing cyclists and crossing amphibians. We investigated four transects on a daily basis during most of the amphibian spring migration in 2021. We counted and identified (to species level) all killed amphibians; further, we used cyclist counters and toad fences to assess the number of passing bicycles and crossing amphibians, respectively. We found 11 killed smooth newts Lissotriton vulgaris, out of 5,037 that crossed the bicycle paths. Although 11,453 anurans crossed, we found no killed anurans. The occurrence of killed smooth newts was not affected by the number of passing bicycles or crossing newts. The probability of being killed was extremely low for crossing smooth newts (0.22 %) and anurans (0 %), possibly because cyclists successfully avoid cycling over amphibians. Future monitoring should occur from early February to late November to include the complete active period of amphibians including juvenile dispersal, and across multiple successive years because amphibian numbers can vary largely between years. During our study period, however, amphibian mortality on bicycle paths in Bargerveen seems no threat to populations, despite the high numbers of cyclists. Keywords: road ecology, animal-cyclist collisions, smooth newts, anurans, conservation
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Mardinata, Roly, Gunardi Djoko Winarno, and Nuning Nurcahyani. "The Diversity Amphibian (Order Anura) on Diefferent Habitat Types in Balik Bukit Resort Bukit Barisan Selatan National Park." Jurnal Sylva Lestari 6, no. 1 (February 12, 2018): 58. http://dx.doi.org/10.23960/jsl1659-66.

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Balik Bukit Resort Bukit Barisan Selatan National Park (BBSNP) is a protected area where various amphibians habitat. The conditions and quality of habitat, of course determines the diversity of amphibians. This study aimed to analyze the diversity to detect that the amphibians (order Anura), comparing the diversity of amphibians (order Anura) based on different types of habitat and identifying amphibian habitat conditions (order Anura) in Resort Balik Bukit of Bukit Barisan Selatan National Park. This study uses three replications in each habitat type (primary forest, bush and swamp) and using Visual Encounter Surveys in amphibian biodiversity data retrieval. The data have been analyzed using the Shannon Wiener index, and community similarity index by calculating the evenness. Research shows that the value of diversity is still classified as being on the three types of habitat with the highest diversity found in primary forest habitat that habitat conditions in Resort Behind the hill is still ensure the growth and proliferation of amphibians order Anura.Keywords: Anura, Amphibians, Environmental Indicators, Resort Balik Bukit TNBBS
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Dey, Suvajit, and Atindra Karar. "Regulatory effects of prolactin in amphibians." South Asian Journal of Experimental Biology 13, no. 4 (December 25, 2023): 307–27. http://dx.doi.org/10.38150/sajeb.13(4).p307-327.

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Prolactin (PRL) is a protein hormone of the anterior pituitary and has a diverse role in different aspects of amphibian life - in courtship, reproduction, larval development and in other physiological functions. The expression of PRL receptor mRNA is reported in skin, gill, liver, gut, kidney, gonads and many other organs of different groups of amphibians. PRL stimulates growth and inhibits the metamorphosis of larvae of several species of amphibians. PRL causes seasonal changes in sex accessory structures and secondary sexual characteristics. PRL affects metabolic regulation and suggests phylogenic conservation of its receptors. Plasma PRL concentration changes during the annual reproductive cycle in many amphibians. In courtship behavior of newt, PRL also induces the synthesis of the newt courtship pheromones. PRL acts on skin and its function is also associated with water drive in amphibians. PRL causes water retention in amphibians. PRL acts centrally or peripherally to induce the courtship behavior. The key goal of the paper is to understand the roles of PRL in various aspect of amphibian life, like in aspects of morphology, behaviour, physiological functions and how PRL interfere amphibian life in presence and absence of other chemical and biological factors.
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Dissertations / Theses on the topic "Amphibians"

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Rothermel, Betsie. "Movement behavior, migratory success, and demography of juvenile amphibians in a fragmented landscape /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3099626.

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Patrick, David A. "The Effects of Forest Practices on a Maine Amphibian Community." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/PatrickDA2007.pdf.

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Crockett, Marquette Elaine. "Survey and Comparison of Amphibian Assemblages in Two Physiographic Regions of Northeast Tennessee." [Johnson City, Tenn. : East Tennessee State University], 2001. http://etd-submit.etsu.edu/etd/theses/available/etd-0605101-155522/unrestricted/crockett0611.pdf.

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Regula, Meyer Lisa. "Invasive plants and native amphibians| The implications for amphibian conservation in eastern North America." Thesis, Kent State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3618851.

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Humans introduce non-native plants to new areas at an increasing rate with the increased movement across the globe. These invasive species can become mono-cultures and extremely different from the native floral community. Amphibians, at the same time, are facing global declines with approximately one-third of all amphibians threatened or endangered. Due to the importance of amphibians as prey items for many vertebrates including small birds, mammals, and reptiles, and also predator controls over many invertebrates, including some pest species, the decline of amphibians has large implications for many environments. This study looks at a range of interactions between two invasive plants ( Typha angustifolia and Phragmites australis) and two native anurans (Lithobates clamitans and Lithobates catesbeianus).

As ecosystem engineers, plants form the basis of many communities, and sculpt the physical environment by adding complexity to the earth's surface. They also add chemical constituents either actively or passively too ward off other competitors. This change in the environment on both the chemical and physical level leads to complex possibilities for a changed plant community to impact the rest of the ecosystem, including amphibians. I focus on the physical changes by looking at behavior of amphibians in these invasive plant mono-cultures and non-invaded controls, and their appearance in invaded and non-invaded wetlands, both constructed and naturally occurring. On the chemical side of the matter, I monitor water chemistry measures in natural and constructed wetlands that are either lacking invasive plants or have a substantial presence of these plants, and correlate those measures with tadpole growth and survival.

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Regula, Meyer Lisa K. "INVASIVE PLANTS AND NATIVE AMPHIBIANS: THE IMPLICATIONS FOR AMPHIBIAN CONSERVATION IN EASTERN NORTH AMERICA." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1384952870.

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Schneider, Amy Elizabeth. "Continued study of the use of created ponds for amphibian breeding in fragmented forested areas." [Huntington, WV : Marshall University Libraries], 2008. http://www.marshall.edu/etd/descript.asp?ref=876.

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Regosin, Jonathan V. "Terrestrial habitat use by pool-breeding amphibians in a suburban landscape /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2003.

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Thesis (Ph.D.)--Tufts University, 2003.
Adviser: J. Michael Reed. Submitted to the Dept. of Biology. Includes bibliographical references (leaves 124-134). Access restricted to members of the Tufts University community. Also available via the World Wide Web;
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Penner, Johannes. "Macroecology of West African amphibians." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2014. http://dx.doi.org/10.18452/17035.

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Amphibienpopulationen sind weltweit bedroht. Für fundierte Entscheidungen im Naturschutz ist ein wissenschaftliches Hintergrundwissen notwendig. Eine wichtige Komponente ist die Verbreitung der Arten und die Gründe hierfür. Dies setzt auch Klarheit bezüglich des taxonomischen Status voraus. Vernachlässigte Regionen liegen meist in den Tropen. Um diese Lücke zu füllen, untersucht die vorliegende Arbeit die Makroökologie westafrikanischer Amphibien. Eine neue Art der Familie Phrynobatrachidae wird beschrieben. Anschließend werden die taxonomischen Unterschiede zweier Mitglieder der Familien der Hyperoliidae und der Arthroleptidae untersucht. Dies ebnet den Weg für die Makroökologie. Es wird analysiert, ob Westafrika eine einzigartige biogeographische Region ist. Die Untersuchung zeigen, dass Westafrika in der Tat einzigartig ist. Die Ähnlichkeiten innerhalb der Region sind größer als die innerhalb ähnlicher Habitate aus unterschiedlichen Regionen. Der Cross River ist die wichtigste Barriere. Mehrere geographische Zonierungen innerhalb Westafrikas werden entdeckt. Es wird untersucht, ob der Chytrid Pilz, Batrachochytrium dendrobatidis, (Bd), ein wichtiger Faktor beim Rückgang der Amphibien Populationen, in West Afrika vorkommt. Bisher gibt es keinen positiven Nachweis westlich Nigerias. Dennoch sagen Modelle geeignete Habitate für Bd vorher. Die wahrscheinlichste Erklärung ist, dass die Dahomey Gap als natürliche Barriere die Ausbreitung von Bd verhindert. Als letztes werden die Nischen westafrikanischer Amphibien eruiert. Für die meisten Arten werden Nischenmodelle berechnet. Dies bestätigt bereits bekannte Gebiete hoher Alpha Diversität und zeigt bisher unbekannte Gebiete auf. Des Weiteren werden Erklärungen für unterschiedliche Verbreitungsgebietsgrößen gesucht. Generell wird die Nischenbreite hierfür verantwortlich gemacht. Die vorliegenden Daten lassen allerdings auch den Schluss zu, dass das Ausbreitungsvermögen das beobachtete Muster ebenfalls erklären kann.
Amphibian populations are declining globally. For informed conservation decisions a sound scientific background is needed. One major component is species distribution and the underlying causes. This also requires clarity on the taxonomic status. Often neglected regions are located in the tropics. In order to fill this gap, the present thesis examines the macroecology of West African amphibians. A new species of the family Phrynobatrachidae is described. Afterwards, the taxonomic differences between morphologically similar members of the families Hyperoliidae and Arthroleptidae are discussed. Beside other studies, this sets the field for macroecology. It is tested whether West Africa is a unique biogeographic region. The similarity of amphibian assemblages from Sub-Saharan Africa is analysed and it is shown that West Africa contains unique assemblages. Similarities within the region are higher than similarities between habitats across different regions. The main barrier towards Central Africa is the Cross River. Several geographic divisions within West Africa are detected. It is examined whether the chytrid fungus Batrachochytrium dendrobatidis (Bd), one important factor for amphibian population declines in many other regions, occurs in West Africa. So far there is no positive record west of Nigeria. However, models predict that environmental suitability for Bd is high. The most plausible explanation for the absence is that the Dahomey Gap acted as a natural barrier against the spread of the Bd. Finally, the niches of West African amphibians are investigated. For most species environmental niche models are calculated. This confirms previously known areas of high alpha diversity and so far unknown species rich areas are detected. In a further study, explanations for differing range sizes are searched for. Niche breadth is commonly assumed to be the general cause. However, the analysed data also suggests that dispersal ability can also explain the observed pattern.
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Lau, Kwan-wa. "Cloning and characterization of the first amphibian secretins and secretin receptor functional implication of secretin with orexin in amphibians /." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B44143655.

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McMaster, Kellie Anne. "Ecophysiology of Australian cocooning and non-cocooning, burrowing, desert frogs /." Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0138.

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Books on the topic "Amphibians"

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Marcos, Di-Bernardo, and Centro de Pesquisas e Conservação da Natureza Pró-Mata, eds. Anfíbios =: Amphibien = Amphibians. Porto Alegre: EDIPUCRS, 1999.

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Collins, James P. Global amphibian decline: Extinction in our times. Oxford: Oxford University Press, 2009.

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P, Leonard William, and Seattle Audubon Society, eds. Amphibians of the Pacific Northwest. Seattle, Wash: Seattle Audubon Society, 2005.

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MacLeod, Beatrice. Amphibians. Milwaukee: Gareth Stevens Pub., 1997.

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Spilsbury, Richard. Amphibians. Chicago, Ill: Heinemann Library, 2009.

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Gilda, Berger, ed. Amphibians. New York: Scholastic, 2011.

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Stone, Lynn M. Amphibians. Vero Beach, Fla: Rourke Corporation, 1998.

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Ricciuti, Edward R. Amphibians. Woodbridge, Conn: Blackbirch Press, 1993.

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Inc, World Book, ed. Amphibians. Chicago: World Book, 2009.

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Tim, Harris, ed. Amphibians. New York: Gareth Stevens, 2010.

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Book chapters on the topic "Amphibians"

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Peltzer, Paola M., and Rafael C. Lajmanovich. "Amphibians." In The Middle Paraná River, 327–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-70624-3_13.

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Hall, Brian K. "Amphibians." In The Neural Crest in Development and Evolution, 61–76. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4757-3064-7_5.

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Baitchman, Eric, and Mark Stetter. "Amphibians." In Zoo Animal and Wildlife Immobilization and Anesthesia, 303–11. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118792919.ch17.

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Sinsch, Ulrich. "Amphibians." In Animal Homing, 213–33. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-1588-9_5.

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Zelick, Randy, and R. R. Capranica. "Amphibians." In Encyclopedia of Acoustics, 1807–12. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470172544.ch149.

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Pregill, Gregory K. "Amphibians." In West Southwest, 137–58. Boca Raton : Taylor & Francis, 2018.: CRC Press, 2018. http://dx.doi.org/10.1201/9781351020060-7.

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Pinheiro, Sérgio Rangel. "Class Amphibia (Amphibians): Frogs, Toads." In Biology, Medicine, and Surgery of South American Wild Animals, 1–8. Ames, Iowa, USA: Iowa State University Press, 2008. http://dx.doi.org/10.1002/9780470376980.ch1.

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Bell, Rayna C., Luis M. P. Ceríaco, Lauren A. Scheinberg, and Robert C. Drewes. "The Amphibians of the Gulf of Guinea Oceanic Islands." In Biodiversity of the Gulf of Guinea Oceanic Islands, 479–504. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06153-0_18.

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AbstractThis chapter reviews the diversity, evolutionary relationships, ecology, and conservation of the Gulf of Guinea oceanic islands’ endemic caecilian and anuran fauna. A total of nine amphibian species (representing five families) are known from São Tomé and Príncipe islands, all of which are endemic. No amphibians have been reported from Annobón. Taxonomic research on this group of animals began in the second half of the nineteenth century with subsequent refinement following the advent of molecular techniques. The presence of several amphibians from distinct evolutionary lineages is unexpected for oceanic islands and has motivated several biogeographic studies to reconstruct the evolutionary histories of these enigmatic species. Yet, the continental source for many of the islands’ amphibians remains unknown. The amphibians of São Tomé and Príncipe also exhibit intriguing phenotypic diversity for addressing long-standing hypotheses in evolutionary biology, including body size evolution and gigantism on islands, intraspecific variation and interspecific divergence in coloration, and reproductive and dietary niche partitioning. Recent studies have confirmed the presence of the fungal pathogen Batrachochytrium dendrobatidis in amphibian communities on both São Tomé and Príncipe, but it is unclear whether this pathogen is negatively impacting local populations. Most of the Gulf of Guinea oceanic island endemic amphibians are incredibly abundant and widespread, occurring in primary forest, secondary forest, and agricultural habitats across the islands. Three anuran species (Hyperolius thomensis, Leptopelis palmatus, Ptychadena newtoni) have more limited distributions and/or more specialized ecologies; consequently, additional land-use change poses a threat to the long-term persistence of these taxa.
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Lewis, Jessica H. "The Amphibians." In Comparative Hemostasis in Vertebrates, 71–84. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9768-8_7.

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Santana, Erika M. "Semen Transfer in Amphibians (Amphibians, Semen Transfer)." In Encyclopedia of Sexual Psychology and Behavior, 1–8. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-08956-5_439-1.

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Conference papers on the topic "Amphibians"

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Cozari, Tudor. "Etologia ecologico-evolutiva a amfibienilor: sinteza conceptuala a rezultatelor investigatiilor la nivel regional si european." In Impactul antropic asupra calitatii mediului. Institute of Ecology and Geography, Republic of Moldova, 2019. http://dx.doi.org/10.53380/9789975330800.17.

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Following from long investigations of more than 50 populations of amphibians from the Republic of Moldova and Italy were elucidated ecological particularities and evolutionary reproductive behavior of some species of Caudata and Anura Orders. For the first time, on Autecological & Sinecological level, has been made assessment of nuptial systems of amphibians – of parental contribution, reproductive success, „r” & „K” reproductive strategies and their role in sexual selection and evolution the attainment of reproductive potential as a fundamental mechanism of survival of amphibian populations in various ambient conditions.
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Gherasim, Elena, Dumitru Erhan, Stefan Rusu, Maria Zamornea, and Nina Talambuta. "Specificitatea organică a trematodelor la amfibieni (Amphibia:Ranidae)." In International Symposium "Actual problems of zoology and parasitology: achievements and prospects". Institute of Zoology, 2017. http://dx.doi.org/10.53937/9789975665902.27.

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The paper presents data on amphibians’ trematodes infestation from Pelophylax esculenta complex (Amphibia, Anura) in divers ecosystems of north, center and south zone of the Republic of Moldova.. The helminthological researches of amphibians were accomplished during the years 2013-2017. As result, the infestation of green ranida complex (Rana ridibunda, R. lessonae, R. esculenta) with 10 trematodes species was established. For each species there were established the location in organs. There are also mentioned the amount of collected material.
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Adrović, Avdul, Edina Hajdarević, Alen Bajrić, and Ernad Kucalović. "BIODIVERZITET VODOZEMACA (KLASA: AMPHIBIA) SJEVEROISTOČNE BOSNE." In XXVII savetovanje o biotehnologiji. University of Kragujevac, Faculty of Agronomy, 2022. http://dx.doi.org/10.46793/sbt27.333a.

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The inventory of amphibians was conducted during 2020 and 2021 in the area of northeastern Bosnia. The conducted research determined 11 species of amphibians, of which three species belong to the tailed amphibians and the other eight to the tailless amphibians. Based on IUCN data, it can be concluded that these are the species with the least concern (LC) status. However, it is evident that the number of natural habitats of amphibians in the investigated area has been significantly reduced, and constant monitoring of the condition of their populations is necessary.
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MAGLIA, ANNE M., JENNIFER L. LEOPOLD, L. ANALÍA PUGENER, and SUSAN GAUCH. "AN ANATOMICAL ONTOLOGY FOR AMPHIBIANS." In Proceedings of the Pacific Symposium. WORLD SCIENTIFIC, 2006. http://dx.doi.org/10.1142/9789812772435_0035.

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Cozari, Tudor, and Elena Gherasim. "Comportamentul de reproducere al ranidelor verzi: analiză sintetică." In International symposium ”Functional ecology of animals” dedicated to the 70th anniversary from the birth of academician Ion Toderas. Institute of Zoology, Republic of Moldova, 2019. http://dx.doi.org/10.53937/9789975315975.06.

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Amphibians, represents a special study object for researchers because this are the first vertebrate animals that have conquered the dry land. Internationally, this study being analyzed from the most diverse points of view: morphological, physiological, systematic, phylogenetic, ecological, and so on, but nationally the research is incomplete. For this purpose, the authors carried out a complex study and deciphered the most complicated aspects of reproductive behavior of these vertebrate animals. The reproduction behavior of green frogs is one that evolved during their evolution and is one of the important components of the process of adaptation of amphibian populations to the conditions of the temperate environment of the Earth.
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Gherasim, Elena, Dumitru Erhan, and Stefan Rusu. "Establishing the role of amphibians (Anura) in the prophylaxis of helminths specific to domestic, wild and pet animals." In Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.33.

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This work is based on helminthological data of amphibians, collected since 2013 until 2020, in the Republic of Moldova. The investigations on anura amphibians were conducted in the laboratory of Parazitology and Helminthology of the Institute of Zoology. One of the most common parasitic diseases in ruminants is fasciolosis, caused by the trematode Fasciola hepatica species. The results of parasitological research showed that adult cattle were infected with fascioles in 66.4% of cases, and young cattle - in 46.1% of cases. This is largely due to the grazing of animals of different species and ages in limited areas.The presence of the trematode species Haplometra cylindracea was established in 78% of cases in the amphibians in the Ranidae and Bufonidae families (Rana ridibunda, Rana lessonae, Rana temporaria, Bufo viridis). The results of laboratory helminthological investigations have shown that the relationships between the Fasciola hepatica miracidium and the Haplometra cylindracea miracidium are antagonistic. Amphibians of the Ranidae and Bufonidae families (Rana ridibunda, Rana lessonae, Rana temporaria, Bufo viridis) infested with Haplometra cylindracea tremateda may play an important role in the prophylaxis of fasciolosis.
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Крюков, Владимир Иванович. "MICRONUCLEI AND NUCLEAR ANOMALIES IN THE ERYTHROCYTES OF AMPHIBIANS AND REPTILES." In Перспективные научные исследования: актуальные вопросы, достижения и инновации: сборник статей международной научной конференции (Санкт­Петербург, Январь 2023). Crossref, 2023. http://dx.doi.org/10.58351/230110.2023.91.54.003.

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В результате спонтанного или индуцированного мутагенеза в эритроцитах периферической крови амфибий и рептилий могут возникать микроядра и морфологические аномалии ядер. Их анализ положен в основу метода исследований, названного микроядерным тестом. Использование этого теста связано с проблемой коректной морфологической дифференциации микроядер и ядерных аномалий. В данной статье рассмотрены методические вопросы типирования микроядер и ядерных аномалий ядер. В соотвествии с алгоритмом анализа ввыделены два типа микроядер: изолированные (обособленные) от клеточного ядра и примыкающие к ядру. Аномалии ядер разделены на 17 морфологических типов. Часть из них разделена на подтипы. Для каждого морфологического типа и подтипа приведены основные характеристики. Рассмотрены актуальные направления исследований частот микроядер и ядерных аномалий в эритроцитах периферической крови амфибий и рептилий. Micronuclei and nuclear morphological abnormalities can occur in the peripheral blood erythrocytes of amphibians and reptiles by a spontaneous or induced mutagenesis. The analysis of these anomalies is the basis of a research method called the micronucleus test. The use of this test is associated with problems of correct morphological differentiation of micronuclei and nuclear anomalies. This article discusses the methodological aspects of typing micronuclei and nuclear anomalies. In accordance with the analytical algorithm, two types of micronuclei are distinguished: those isolated from the cell nucleus and those adjacent to the nucleus. Nuclear anomalies are divided into 17 morphological types. Some of them are divided into subtypes. The main characteristics are given for each morphological type and subtype of anomalies. Actual problems of research on micronuclei and nuclear anomalies in amphibian and reptile erythrocytes are described in the final part of the article.
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Krivosheev, Vladimir A. "AMPHIBIANS AND REPTILES OF AQUATIC AND NEAR-WATER LANDSCAPES OF THE ULYANOVSK REGION." In Treshnikov readings – 2021 Modern geographical global picture and technology of geographic education. Ulyanovsk State Pedagogical University named after I. N. Ulyanov, 2021. http://dx.doi.org/10.33065/978-5-907216-08-2-2021-38-40.

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Vejzović, Anel, Faruk Tandir, Nedžad Hadžiomerović, Rizah Avdić, and Nejra Dučić. "Exotic Animals’ Vascular System Characteristics and its Application in Clinical Practice." In Socratic lectures 10. University of Lubljana Press, 2024. http://dx.doi.org/10.55295/psl.2024.ii5.

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Abstract: Veterinary practice commonly involves caring for domestic and companion animal. Since the trend of owning exotic pets is rapidly increasing, veterinarians often treat exotic patients as well. As a result, veterinarians are facing increased demands for specialized skills and knowledge. This article aims to provide a concise review of the anatomy of the vascular system in exotic animals and its relevance in clinical practice. Snakes, lizards and chelonians have 3-chambered heart with 2 atria and one partially divided ventricle whereas crocodiles have 4-chambered heart. It is important to consider these characteristics during the anesthesia in reptiles since blood shunting affects changes in blood pressure, oxygen level and other anesthetic parameters. In birds, the cardiovascular system is crucial in enduring the exhausting physical activities such as swimming, flying or diving and running. Birds have renal portal system which consists of cranial and caudal renal portal vein. The recommendation of avoiding drug application in the hindlimbs of birds is present for a long time. This is valid not only for birds, but for reptiles, amphibians and most fish. The ventricle of amphibians is trabeculated, which minimizes blood shunting through various anatomical and physiological features. During biphasic systole, the left and right side of the ventricle contract separately, directing blood in different parts of aortic arches. Due to the complexity of the exotic animals, thorough education added in veterinary curricula is needed. Keywords: amphibians, birds, cardiovascular, clinical, reptiles
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Aumann, Herbert, Evan Kus, Brittany Cline, and Nuri W. Emanetoglu. "A 5.8 GHz harmonic RF tag for tracking amphibians." In 2012 IEEE International Conference on Wireless Information Technology and Systems (ICWITS). IEEE, 2012. http://dx.doi.org/10.1109/icwits.2012.6417669.

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Reports on the topic "Amphibians"

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Gillespie, T. C., S. M. Lesher, P. D. Miner, and B. P. Cyr. Composite Warfare and The Amphibians. Fort Belvoir, VA: Defense Technical Information Center, March 1992. http://dx.doi.org/10.21236/ada272337.

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Teralene S. Foxx, Timothy K. Haarmann, and David C. Keller. Amphibians and Reptiles of Los Alamos County. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/15211.

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Corn, Paul Stephen, and R. Bruce Bury. Sampling methods for terrestrial amphibians and reptiles. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1990. http://dx.doi.org/10.2737/pnw-gtr-256.

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Carey, Marc. Brainstem auditory evoked potentials in anuran amphibians. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6151.

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Kluthe, Gregory. Relative Heart Ventricle Mass and Cardiac Performance in Amphibians. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.920.

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Sperry, Jinelle H. Reptiles and Amphibians of Fairchild Air Force Base, WA. Fort Belvoir, VA: Defense Technical Information Center, May 2013. http://dx.doi.org/10.21236/ada582968.

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Bury, R. Bruce, and Paul Stephen Corn. Sampling methods for amphibians in streams in the Pacific Northwest. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1991. http://dx.doi.org/10.2737/pnw-gtr-275.

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Dumont, James. The Effects of Ammonium Perchlorate on Reproduction and Development of Amphibians. Fort Belvoir, VA: Defense Technical Information Center, January 2008. http://dx.doi.org/10.21236/ada495519.

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Muckenhirn, A., and B. Hanshew. Arroyo Mocho Habitat Suitability Assessment for Sensitive Reptiles, Amphibians, and Fish. Office of Scientific and Technical Information (OSTI), September 2021. http://dx.doi.org/10.2172/1820024.

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Kendall, Ronald J. Ecological Risk Assessment of Ammonium Perchlorate on Fish, Amphibians, and Small Mammals. Fort Belvoir, VA: Defense Technical Information Center, February 2003. http://dx.doi.org/10.21236/ada469870.

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