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Tesis sobre el tema "Frogs"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Tyler, Michael J. "The biology and systematics of frogs : contributions submitted to The University of Adelaide /." Title page and summary only, 2002. http://web4.library.adelaide.edu.au/theses/09SD/09sdt983.pdf.

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Thesis (D.Sc.)--University of Adelaide, Dept. of Environmental Biology, 2002.<br>Vol. [2] comprises 6 reprints of published monographs in box folder; but numbered within the publications submitted listing (90 items), and within the 3 categories identified; at the beginning of vol. 1. Includes bibliographical references.

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2

McDaniel, Tana. "Direct and indirect interactions between two ranid frogs, pickerel frogs (Rana palustris) and leopard frogs (Rana pipiens )." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0016/MQ55693.pdf.

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3

Dickson, Nancy J. "The natural history and possible extirpation of Blanchard's Cricket Frog, Acris crepitans. blanchardi, in West Virginia." Huntington, WV : [Marshall University Libraries], 2002. http://www.marshall.edu/etd/descript.asp?ref=95.

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Thesis (M.S.)--Marshall University, 2002.<br>Title from document title page. Document formatted into pages; contains ix, 115 p. with maps and illustrations. Includes vita. Includes bibliographical references (p. 34-40).

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4

Bayne, Kimberly Ann. "The natural history and morphology of the eastern cricket frog, Acris crepitans crepitans, in West Virginia." Huntington, WV : [Marshall University Libraries], 2004. http://www.marshall.edu/etd/descript.asp?ref=387.

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Thesis (M.S.)--Marshall University, 2004.<br>Title from document title page. Document formatted into pages; contains vi, 103 p. including illustrations and maps. Includes bibliographical references (p. 100-103).

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5

Doak, Naomi C. "Phylogeography, Dispersal and Movement of Fleay's Barred Frog, Mixophyes fleayi." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/365483.

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This thesis investigates historical and current dispersal in Mixophyes fleayi, an endangered, wet forest-restricted frog species, found exclusively on the Great Dividing Range of mid-eastern Australia. The phylogeographic structuring and genetic divergence among isolated forest fragments and the presence of multiple populations within continuous forest is used to investigate historical connectivity of populations and current dispersal. Indirect genetic methods as well as field based direct methods are also used to investigate dispersal and movement. These results are used to explore the conseq

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6

Cunningham, Michael. "Vicariance, speciation and diversity in Australopapuan rainforest frogs /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16280.pdf.

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7

Schäuble, Chloe Sarah. "Geographic variation in the widespread Australian frogs Limnodynastes tasmaniensis and L. peronii /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16936.pdf.

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8

Cramp, Rebecca L. "The effects of aestivation and re-feeding on the structure and function of the gut in the green-striped burrowing frog, Cyclorana alboguttata /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18663.pdf.

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9

Marshall, Vincent Timothy. "Social aspects of communication in gray treefrogs : intraspecific and interspecific interactions /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3115569.

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10

Aihara, Ikkyu. "Synchronization of Calling Frogs." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/142353.

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11

Havens, Sarah Beth. "The role of skeletal development in body size evolution of two North American frogs." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2010. http://scholarsmine.mst.edu/thesis/pdf/Havens_2010_09007dcc807be556.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2010.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed June 7, 2010) Includes bibliographical references.

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12

Doak, Naomi C. "Phylogeography, dispersal and movement of Fleay's Barred Frog, Mixophyes fleayi." Click here to access, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060221.144328.

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13

Sias, Jaime. "Natural history and distribution of the Upland Chorus Frog, Pseudacris feriarum Baird, in West Virginia." Huntington, WV : [Marshall University Libraries], 2006. http://www.marshall.edu/etd/descript.asp?ref=629.

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Theses (M.S.)--Marshall University, 2006.<br>Title from document title page. Includes abstract. Document formatted into pages: contains xiii, 82 p. including col. illustrations and maps. Bibliography: p. 66-76.

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14

Norris, Rachel Mary. "Morphology and systematics of the Solomon Island Ranid frogs." Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phn858.pdf.

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"December 2002" Bibliography: leaves 230-241. Ch. 1. Introduction -- Ch. 2. Historical account -- Ch. 3. Morphometrics -- Ch. 4. Osteology of Solomon Islands ranids -- Ch. 4. Karyology of the Solomon Islands ranids -- Ch. 6. Phylogenetic analysis -- App. 1: Material examined -- App. 2: Discriminant function analysis -- App. 3: Character descriptions. "This study validates the Solomon Islands taxa (using morphometrics) and explores the biology of the Solomon Islands ranids, with detailed osteological descriptions, external morphology and karyology. Using characters from these data sets a cladis

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15

Hamilton, Amy M. "A taxonomic study of the genus Acris and the status of Acris crepitans blanchardi (Harper), Blanchard's cricket frog, in southern Ohio and western West Virginia." [Huntington, WV : Marshall University Libraries], 2008. http://www.marshall.edu/etd/descript.asp?ref=888.

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16

Nájera-Hillman, Eduardo. "Leiopelma hochstetteri Fitzinger 1861 (Anura: Leiopelmatidae) habitat ecology in the Waitakere Ranges, New Zealand a thesis submitted to AUT University in partial fulfilment of the degree of Doctor of Philosophy, 2008 /." Click here to access this resource online, 2009. http://hdl.handle.net/10292/736.

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17

Rondeau, Sylvie L. "Variables determining buoyancy in juvenile mink frogs, Rana septentrionalis, with comparisons to boreal chorus frogs, Pseudacris triseriata maculata, and wood frogs, Rana sylvatica." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0028/MQ51793.pdf.

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18

Xin, Ling. "Stability of the frog motor nerve terminal roles of perisynaptic Schwann cells and muscle fibers /." Connect to this title online, 2008. http://scholarworks.umass.edu/theses/101/.

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19

Lowe, Katrin. "Landscape Ecology and Bioclimatic Conditions of the Wallum Sedge Frog (Litoria olongburensis) in Coastal Wallum Wetlands of Eastern Australia: Resilience to Climate Change." Thesis, Griffith University, 2013. http://hdl.handle.net/10072/366084.

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Many species are threatened by rapidly changing climate and amphibians may be particularly vulnerable. As ectotherms, all aspects of amphibian physiology and life history are directly or indirectly influenced by temperature and moisture. For amphibian conservation, a clear priority is to investigate impacts of climate change on key environmental parameters within breeding habitats, as well as the ecology of threatened species. This information is vital for assessing species vulnerability to climate change and informing conservation efforts. Wallum frogs are species that are restricted to natu

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20

Vradenburg, John. "Distribution and abundance of anurans in southeast Missouri." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4258.

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Thesis (M.S.)--University of Missouri-Columbia, 2005.<br>The 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 (January 10, 2007) Includes bibliographical references.

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21

Humfeld, Sarah Conditt. "Signaling, intersexual dynamics and the adoption of alternative male mating behaviors in green treefrogs, Hyla cinerea /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3115556.

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22

Pearl, Christopher A. "Demonstration of pheromonal activity in the breeding glands of dwarf African clawed frogs (Hymenochirus sp.)." Scholarly Commons, 2000. https://scholarlycommons.pacific.edu/uop_etds/529.

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Anurans rely mainly on vocalizations for mate attraction while urodeles rely mainly on pheromones. However, the presence of breeding glands suggests that anurans may also communicate with pheromones during reproduction. Previous studies have shown that male Hymenochirus sp. are able to attract females in a Y-maze, most likely through chemical means, but the source of the attractant has not been identified. By exposing female Hymenochirus sp. to choice tests in a Y -maze it was demonstrated that the breeding glands of male Hymenochirus sp. are the source of a mate-attractant pheromone. This stu

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23

Churchill, Thomas Allen Carleton University Dissertation Biology. "Metabolic biochemistry of freeze tolerance in vertebrates." Ottawa, 1992.

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24

Schadich, Ermin. "Skin peptide defences of African clawed frogs (Xenopus laevis) and New Zealand Litoria frogs against bacterial dermatosepticemia." Thesis, University of Canterbury. School of Biological Sciences, 2008. http://hdl.handle.net/10092/4437.

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In frogs, part of the important immune defence system of their skin is the secretion of antimicrobial peptides from granular glands. This study investigated the immune function of skin peptides in protection against bacterial pathogens associated with infectious bacterial dermatosepticemia under a number of environmental conditions and at certain stages of the life cycle of frogs. The natural peptide mixture of skin peptides was collected from skin secretions of three semi-aquatic Litoria frog species L. aurea, L. raniformis and L. ewingii and aquatic Xenopus laevis and assayed for activity ag

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25

Parris, Matthew James. "Analysis of fitness determinants in an anuran hybrid zone (Rana blairi and Rana sphenocephala) : the evolutionary potential of natural hybridization /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9953888.

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26

Yeh, Jennifer Jean. "Ontogeny and evolutionary morphology of the skeleton in frogs." Access restricted to users with UT Austin EID, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3037029.

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27

Kaveh, Farzaneh [Verfasser]. "Wet bioadhesion in tree frogs / Farzaneh Kaveh." Mainz : Universitätsbibliothek Mainz, 2014. http://d-nb.info/1058655930/34.

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28

Edwards, Danielle L. "Biogeography and speciation of southwestern Australian frogs." University of Western Australia. School of Animal Biology, 2007. http://theses.library.uwa.edu.au/adt-WU2008.0058.

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[Truncated abstract] Southwestern Australia is a global biodiversity hotspot. The region contains a high number of endemic species, ranging from Gondwanan relicts to more recently evolved plant and animal species. Biogeographic models developed primarily for plants suggest a prominent role of Quaternary climatic fluctuations in the rampant speciation of endemic plants. Those models were not based on explicit spatial analysis of genetic structure, did not estimate divergence dates and may be a poor predictor of patterns in endemic vertebrates. Myobatrachid frogs have featured heavily in the lim

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29

Kaiser, Hinrich. "Systematics and biogeography of eastern Caribbean frogs." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41632.

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This study examines the systematics and biogeography of frogs in the Eastern Caribbean, a biogeographical province consisting of the Lesser Antilles, Trinidad, and Tobago. A comprehensive collection of specimens was subjected to an analysis incorporating morphometric, osteological, and biochemical approaches. An investigation of $ alpha$-level taxonomy revealed the presence of four additional taxa: Colostethus chalcopis sp. nov. on Martinique, Eleutherodactylus amplinympha sp. nov. on Dominica, E. euphronides comb. nov. on Grenada, and E. shrevei comb. nov. on St. Vincent. Based on species dis

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30

Wycherley, Julia T. M. "Bioacoustics and ecology of European water frogs." Thesis, University of Sussex, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398351.

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31

Zeisset, Inga. "Molecular ecology of North European water frogs." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326908.

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32

Gose, Christopher Todd. "Dead frogs, birds and a light bulb." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1321900608.

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33

Kulkarni, Saurabh S. "Endocrine Mechanisms Underlying Phenotypic Evolution in Frogs." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342106009.

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34

Lyu, Peng. "Functional genomic studies of selected Eurasian frogs." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.695660.

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Amphibians have existed on Earth for more than 300 million years. Most amphibians can survive in a wild range of living environments. Some of their living environments are fulfilled with pathogen microorganisms. The skin of amphibians produces a complex noxious/toxic chemical cocktail from specialised granular glands to against these microorganisms. This thesis describes several novel bioactive peptides which were identified from the skin secretions of the Chinese Bamboo odorous frog, Odorrana versabilis, the Chinese Black-spotted Pond frog, Pelophylax nigromaculatus and the Eurasian edible fr

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35

Eto, Koshiro. "Systematic studies of two Japanese brown frogs." Kyoto University, 2014. http://hdl.handle.net/2433/188796.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第18358号<br>人博第671号<br>新制||人||161(附属図書館)<br>25||人博||671(吉田南総合図書館)<br>31216<br>京都大学大学院人間・環境学研究科相関環境学専攻<br>(主査)教授松井正文, 教授加藤眞, 教授市岡孝朗<br>学位規則第4条第1項該当

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36

Samuel, Diana S. "The bioadhesion of tree- and torrent frogs." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5196/.

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Tree frogs adhere to surfaces using their toe pads. These pads secrete a fluid which enables them to adhere using a temporary adhesive mechanism known as wet adhesion. In keeping with the principles that govern this type of mechanism, the toe pads should be capable of adhering sufficiently and detaching effortlessly. However, the vast majority of research in this area has centred on static experiments, thus giving no real indication of the dynamic activity of the animal. Therefore, one aspect of this PhD project was to investigate the biomechanics of tree frog locomotion, focussing particularl

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37

Hartigan, Ashlie. "Myxosporean Parasites in Australian Frogs and Tadpoles." Thesis, The University of Sydney, 2012. http://hdl.handle.net/2123/8900.

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The investigation of new threats to amphibian conservation is a priority of researchers and wildlife managers. Emerging infectious diseases are one of the most threatening processes to wildlife around the world including amphibians. Australian frogs have suffered large scale declines and extinctions from pathogens such as chytrid fungus (Batrochochytrium dendrobatidis). The once overly abundant Green and golden bell frog (Litoria aurea) has declined over 90% of its range with disease listed as a key threat. A routine pathogen screen of tadpoles from a captive breeding population of Green and g

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38

Madison, Amanda L. "Effects of male breeding gland in hymenochirus on female reproductive output." Scholarly Commons, 2005. https://scholarlycommons.pacific.edu/uop_etds/610.

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Normal male dwarf African clawed frogs, Hymenochirus sp., possess bilateral, sexually dimorphic, subcutaneous breeding glands just posterior to the forelimbs. Previous studies have shown these glands release pheromones that attract conspecific females. This thesis shows the pheromones also stimulate the reproductive system of conspecific females. Females exposed to normal males prior to mating then allowed to mate with the normal males released a higher number of eggs than females who were not exposed to normal males prior to mating. Microscopic examination of ovarian tissue revealed that fema

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39

Kindermann, Christina. "Behavioural Ecology, Reproductive Biology and Colour Change Physiology in the Stony Creek Frog (Litoria wilcoxii)." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/367513.

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Many animals possess the remarkable ability to change their skin colour. Colour change can have several potential functions, including communication, thermoregulation and camouflage. However, while the physiological mechanisms and functional significance of colour change in other vertebrates have been well studied, the role of colour change in amphibians is still relatively unknown and a disconnection between morphology, physiology and function exists in the literature (review presented in chapter 2). In this thesis, I investigate these multidisciplinary components to understand the processes

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40

Guderyahn, Laura B. "Nationwide assessment of morphological abnormalities observed in amphibians collected from United States national wildlife refuges." Virtual Press, 2006. http://liblink.bsu.edu/uhtbin/catkey/1339147.

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Previously, amphibian malformations had only been studied at the site, state and regional levels, limiting our understanding of the types of malformations most commonly occurring in wild populations across the country. This study presents the results of radiographic analyses performed on morphologically abnormal amphibians collected from National Wildlife Refuges in 27 states and 6 of 7 US Fish and Wildlife Service regions. Despite considerable differences in species composition and ecological factors (e.g., habitat type, climate and land use), it was observed that abnormalities were remarkabl

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41

Christy, Michelle T. "The ecology and conservation biology of the green and golden bell frog, Litoria aurea, (Lesson 1829), (Anura: Hylidae)." Phd thesis, School of Biological Sciences, 2001. http://hdl.handle.net/2123/8979.

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42

Tucker, Abigail Saffron. "Tail development in Xenopus laevis." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297296.

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43

Will, Lindsey Noel. "Genetic variability between populations of the critically endangered frog Microbatrachella capensis, Boulenger 1910 (Anura: Ranidae: Cacosterninae)." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-07302008-145604.

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44

Gluesenkamp, Andrew Gallagher. "Developmental mode and adult morphology in bufonid frogs : a comparative analysis of correlated traits /." Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008336.

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45

Pearson, Marianne D. "Motile Aeromonas septicaemia of farmed Rana spp." Thesis, University of Stirling, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298565.

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46

Dziminski, Martin A. "The evolution of variable offspring provisioning." University of Western Australia, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0134.

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Most theoretical models predict an optimal offspring size that maximises parental fitness. Variation in the quality of the offspring environment can result in multiple offspring size optima and therefore variation of offspring provisioning can evolve. Variation in offspring provisioning is common and found across a variety of taxa. It can be defined as between populations, explained by optimality models, or between and within individuals, neither so easily explained by optimality models. My research focused on the evolution of variable offspring provisioning by testing theoretical models relat

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47

Burns, Alice Elton. "Behavioral evidence for chemical communication in Hymenochirus curtipes." Scholarly Commons, 1997. https://scholarlycommons.pacific.edu/uop_etds/2306.

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The release of reproductive pheromones from the postaxillary glands of male Hymenochirus has been postulated by several sources. Adult, female dwarf African clawed frogs (Hymenochirus curtipes Noble 1924) injected with gonadotropin releasing hormone (GnRH) were tested for the ability to detect and show a preference to or an aversion from water housing conspecifics on the basis of chemical cues. Preference tests were done in an aquatic Y-maze apparatus at a flow rate of 14 ml/min. Each female frog was placed in the Y-maze and observed for two fifteen minute periods, during which time its moveme

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48

NGUYEN, Thien Tao. "Systematic study of the rhacophorid frogs in Vietnam." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/198931.

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49

Hay, Timothy D. "Variation in advertisement call structure of whistling frogs." Thesis, University of Canterbury. Zoology, 1994. http://hdl.handle.net/10092/1517.

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Variation in advertisement call structure of whistling frogs, Litoria ewingi, was studied among breeding sites in the vicinity of Christchurch on the East coast and Harihari on the West coast of the South Island. Males vocalized in breeding choruses throughout the year and females moved toward and appeared to evaluate calls of territorial males before initiating amplexus. Acoustic interactions between neighbours led to modification of call structure and timing, and wrestling matches between males were frequent. I quantified call structure for 1623 calls of 168 individuals using 24 call paramet

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50

Fouquet, Antoine. "Diversity and phylogeography of eastern Guiana Shield frogs." Thesis, University of Canterbury. School of Biological Sciences, 2008. http://hdl.handle.net/10092/2693.

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The Guiana Shield is a sub-region of Amazonia, one of the richest areas on earth in terms of species number. It is also one of the most pristine areas and is still largely unexplored. Species number, distribution, boundaries and their evolutionary histories remain at least unclear but most of the time largely unknown. This is the case for most Anurans, a group which is recognized as threatened globally and is disappearing even from pristine tropical forests. Given the pace of forest destruction and the growing concerns about climate change it is urgently necessary to obtain a better estimate o

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