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Teses / dissertações sobre o tema "Frogs Development"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 1 de fevereiro de 2022

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1

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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2

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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3

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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4

Schulze, Sabrine. "Wnt6 function in eye development in Xenopus laevis." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=192239.

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The eyes are the most important sensory organs for most vertebrates. Their structure and development is conserved between several vertebrate species. The development is regulated by several signalling pathways, including the Wnt/β-catenin signalling pathway. It is required for several aspects of retinal development and it is known to regulate the proliferation of neuro-epithelial stem cells. In Xenopus laevis the intracellular Wnt/β-catenin signalling pathway is activated in the retina by the Wnt receptor Fz5. Fz5 function in the eye was shown to regulate tissue specific gene expression and ne

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5

Wakefield, L. V. "Control of genes synthesizing small RNAs in amphibian development." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355661.

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6

Cheung, Ka-chun, and 張家進. "Roles of makorin-2 in embryonic development and carcinogenesis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45595197.

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7

Lanctôt, Chantal. "The Effects of Glyphosate-based Herbicides on the Development of Wood Frogs, Lithobates sylvaticus." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23288.

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Amphibians develop in aquatic environments where they are very susceptible to the effects of pesticides and other environmental contaminants. Glyphosate-based herbicides are widely used and have been shown to affect survival and development of tadpoles under laboratory conditions. The goal my thesis is to determine if agriculturally relevant exposure to Roundup WeatherMax®, a herbicide formulation containing the potassium salt of glyphosate and an undisclosed surfactant, influences the survival and development of wood frogs tadpoles (Lithobates sylvaticus) under both laboratory and field condi

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8

Wang, Yu. "HPLC method development for the evaluation of pheromones from the dwarf African clawed frog Hymenochirus." Scholarly Commons, 2003. https://scholarlycommons.pacific.edu/uop_etds/587.

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9

Bouffard, Jeremie. "Effects of a Neonicotinoid Insecticide and Population Density on Behaviour and Development of Wood Frogs (Lithobates sylvaticus)." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42390.

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Amphibians have been facing global declines over the last decades due to direct and indirect effects of anthropogenic activities. One of the leading causes is environmental contamination, particularly that of waterbodies which are used by many amphibian species for reproduction, development, and adult life. An important source of contamination comes from agricultural runoffs of pesticides such as neonicotinoids, which are known to alter anuran survival, behaviour, predation stress response, and development. However, few studies have investigated the possible interactions between neonicotinoids

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10

Grimes, Peter Julian. "It's better than catching frogs : exploring inclusion in relation to local context in Lao PDR and Thailand." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/its-better-than-catching-frogsexploring-inclusion-in-relation-to-local-context-and-knowledge-in-lao-pdr-and-thailand(d74d830a-4450-4ce1-a614-806739dd7b64).html.

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This thesis examines the applicability of pre-dominantly Western theories of inclusive school development in countries of the Global South. Firstly, the findings of a review of research literature are used to develop a typology to describe the common features of inclusive schools, incorporating ways in which they might be supported. This typology was then used to explore the ways in which schools in the Lao People's Democratic Republic and Thailand developed inclusive practices. Engagement with school systems in these countries over a period of six years between 2003 and 2009 provided opportun

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11

Wang, Yu. "HPLC method development for the evaluation of pheromones from the dwarf African clawed frog Hymenochirus : a thesis." Scholarly Commons, 2001. https://scholarlycommons.pacific.edu/uop_etds/587.

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12

Cave, Ashley E. "Grey treefrog tadpole development and behavior altered by dicamba herbicide exposure." Wittenberg University Honors Theses / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1623757491963071.

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13

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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14

Paloski, Rori A. "Relationship between lakeshore development and anuran populations in Portage County, Wisconsin /." Link to full-text, 2006. http://epapers.uwsp.edu/thesis/2006/paloski.pdf.

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15

Boyd, Jonathan Lomax. "Evolutionary Analysis of the Glutamic Acid Decarboxylase 67 Immediate Upstream Region in African Clawed Frogs." W&M ScholarWorks, 2009. https://scholarworks.wm.edu/etd/1539626884.

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16

Flores, De Gracia Eric Enrique. "Early development and the honesty of aposematic signals in a poison frog." Thesis, University of Exeter, 2012. http://hdl.handle.net/10871/8170.

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The causes and consequences of variation in aposematic signals during immature stages are not clearly understood. This thesis explores the effects of early environment on the expression of aposematic signals in the green and black poison frog (Dendrobates auratus), and the consequences of variation in such components in the wild. It also explores how aposematic expression relates to levels of chemical defences in immature froglets. Embryos and larvae of poison frogs in the genus Dendrobates are known to be darkly pigmented. This thesis reports for the first time polymorphism in egg pigmentatio

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17

Kirschman, Lucas James. "The Effects of Neuroendocrine Stress on Larval Development." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/dissertations/1451.

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Environmental stressors are ubiquitous. Animals will face a variety of natural and anthropogenic stressors throughout their life cycle. The physiological mechanisms that mediate stressful stimuli can have pleiotropic effects on life history traits, such as reproduction and development. Furthermore, these phenotypic changes can affect larger-scale ecosystem dynamics, like nutrient cycling and disease epizootics. Animals are not equally susceptible to stressors across all stages of their life cycles. Critical windows of development, common in young and developing animals, are time periods when s

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18

Quadroni, Manfredon. "Characterisation of phosphorylared froms of calmodulin and the development of new techniques for analysing cell proteins /." Zürich, 1995. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=11321.

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19

Currie, Stephen Paul. "The development and neuromodulation of motor control systems in pro-metamorphic Xenopus laevis frog tadpoles." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/10199.

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My thesis has accomplished 3 significant contributions to neuroscience. Firstly, I have discovered a novel example of vertebrate deep-brain photoreception. Spontaneously generated fictive locomotion from the isolated nervous system of pro-metamorphic Xenopus tadpoles is sensitive to the ambient light conditions, despite input from the classical photoreceptive tissues of the retina and pineal complex being absent. The photosensitivity is found to be tuned to short wavelength UV light and is localised to a small region of the caudal diencephalon. Within this region, I have discovered a populatio

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20

Bharathan, Navaneetha Krishnan. "USING THE FROG EPIDERMIS TO UNCOVER DESMOSOME FUNCTION AND REGULATION IN THE DEVELOPING EMBRYO." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5313.

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The desmosome is one of the major cell adhesion junctions found in the epithelia, heart, and hair follicle. Described as a “rivet” that hold cells together, it provides these tissues with the integrity to withstand the tremendous forces they face in everyday life. Defects in this junction can lead to devastating diseases where patients are susceptible to skin infections and cardiovascular defects. Limited treatments exist for diseases of the desmosome, and strategies do not target all symptoms. Therefore, delineating the function and regulation of desmosomes is of paramount importance for the

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21

Borges, Figueiredo Ana Leonor. "Control of cell specification and migration during early frog development by PFKFB4, a key glycolysis regulator." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112107.

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L’ectoderme embryonnaire devient spécifié en ectoderme non-neural, plaque neurale et bordure neurale à la fin de la gastrulation. Les cellules de bordure neurale sont les progéniteurs de la crête neurale et des placodes. La crête neurale est une population transitoire de cellules multipotentes, qui se forme au cours de la neurulation. Quand les bourrelets neuraux s’élèvent pour former le tube neural, les cellules de la crête neurale subissent une transition épithélio-mésenchymateuse, migrent dans l'ensemble du corps pour atteindre leur destination finale et se différencier. La crête neurale do

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22

Gutierrez, Villagomez Juan Manuel. "Effects of Naphthenic Acids and Acid Extractable Organic Mixtures on Development of The Frog Silurana (Xenopus) Tropicalis." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37707.

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Naphthenic acids (NAs) are oil-derived mixtures of carboxylic acids and are aquatic contaminants of emerging concern. The objective of the research presented in this thesis was to investigate the toxicity of NAs in tadpoles of the frog Silurana (Xenopus) tropicalis. Using electrospray ionization high-resolution mass spectrometry (ESI-HRMS), I determined that the proportions of O2 (presumably carboxylic acid moiety) species were 98.8, 98.9 and 58.6% respectively, for two commercial extracts (S1 and S2), and acid extractable organics (AEOs) from oil sands process-affected water (OSPW). The rank

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23

Sharp, Colleen C. R. "Effects of copper and light exposure on the development and survival of the Wood Frog tadpole (Rana sylvatica)." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1209657636.

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24

Blech-Hermoni, Yotam. "Roles of CUG-BP, Elav-Like Family Member 1 (CELF1), an RNA Binding Protein, During Vertebrate Heart Development." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1417636826.

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25

Pan, Tien-Chien. "Metabolic, cardiac and ventilatory regulation in early larvae of the South African clawed frog, Xenopus laevis." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12175/.

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Early development of O2 chemoreception and hypoxic responses under normoxic (150 mmHg) and chronically hypoxic (110 mmHg) conditions were investigated in Xenopus laevis from hatching to 3 weeks post fertilization. Development, growth, O2 consumption, ventilatory and cardiac performance, and branchial neuroepithelial cells (NEC) density and size were determined. At 3 days post fertilization (dpf), larvae started gill ventilation at a rate of 28 ± 4 beats/min and showed increased frequency to 60 ± 2 beats/min at a PO2 of 30 mmHg. Also at 3 dpf, NECs were identified in the gill filament buds u

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26

Singhal, Nishant. "The role of Xenopus BRG1, a conserved subunit of SWI/SNF class of remodeling complexes, during early frog development." Diss., lmu, 2005. http://nbn-resolving.de/urn:nbn:de:bvb:19-41841.

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27

Pollard, Stephen J. "Development and verification of an aerodynamic model for the NPS FROG UAV using the CMARC panel code software suite." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA354951.

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Thesis (Degree of Aeronautical and Astronautical Engineer) Naval Postgraduate School, September 1998.<br>"September 1998." Thesis advisor(s): Max F. Platzer, Kevin D. Jones. Includes bibliographical references (p. 181-182). Also available online.

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28

Arauco, Luis Ricardo Romero [UNESP]. "Efeito do extrato hidroalcoólico de própolis em girinos de rã touro (Rana Catesbeiana)." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/100223.

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Made available in DSpace on 2014-06-11T19:30:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-02-02Bitstream added on 2014-06-13T21:01:16Z : No. of bitstreams: 1 arauco_lrr_dr_jabo.pdf: 644500 bytes, checksum: e57a53b05c75c737674e5912bc1fb10e (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Universidade Estadual Paulista (UNESP)<br>Foi avaliado o efeito do extrato hidroalcoólico de própolis (0,0; 0,2; 0,5; 1,0; e 1,5 %) misturado em ração comercial (45 % Proteína Bruta), em girinos de rã-touro. Foram utilizados 1400 girinos no estágio 26 da tabela de G

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29

King, Kimberly L. P. "Effects of exposure to Eurasian Milfoil (Myriophyllum spicatum) on the growth and development of Xenopus laevis and the Columbia spotted frog (Rana Lutriventris)." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Fall2007/K_King_112607.pdf.

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30

Ott, Tim [Verfasser], and Martin [Akademischer Betreuer] Blum. "Studies of human genetic diseases and developmental processes with the frog Xenopus laevis / Tim Ott ; Betreuer: Martin Blum." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2021. http://d-nb.info/1232545139/34.

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31

Michel, Laura. "On the function of Xenopus Oct4 protein homologs: Molecular construction of dominant interference variants and functional analysis in early frog development." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-136130.

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32

King, Marie Kumsher. "Evaluation of the Developmental Effects and Bioaccumulation Potential of Triclosan and Triclocarban Using the South African Clawed Frog, Xenopus Laevis." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc33178/.

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Triclosan (TCS) and triclocarban (TCC) are antimicrobials found in U.S. surface waters. This dissertation assessed the effects of TCS and TCC on early development and investigated their potential to bioaccumulate using Xenopus laevis as a model. The effects of TCS on metamorphosis were also investigated. For 0-week tadpoles, LC50 values for TCS and TCC were 0.87 mg/L and 4.22 mg/L, respectively, and both compounds caused a significant stunting of growth. For 4-week tadpoles, the LC50 values for TCS and TCC were 0.22 mg/L and 0.066 mg/L; and for 8-week tadpoles, the LC50 values were 0.46 mg

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33

Crump, Douglas. "The effects of the xenoestrogen, octylphenol (OP), and UV-B radiation on somatic development and hypothalamic gene expression of the leopard frog (Rana pipiens)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0015/MQ57102.pdf.

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34

Michel, Laura L. [Verfasser], and Ralph [Akademischer Betreuer] Rupp. "On the function of Xenopus Oct4 protein homologs : molecular construction of dominant interference variants and functional analysis in early frog development / Laura Michel. Betreuer: Ralph Rupp." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2011. http://d-nb.info/101723311X/34.

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35

Long, Hannah Katherine. "Evolutionary usage and developmental roles of vertebrate non-methylated DNA." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:78b14c1d-1fa3-46f1-815f-a8ba55579c43.

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Vertebrate genomes exhibit global methylation of cytosine residues where they occur in a cytosine-guanine dinucleotide (CpG) context and this epigenetic mark is generally thought to be repressive to transcription. Punctuating this pervasive DNA methylation landscape are short, contiguous regions of non-methylated DNA which are found at two thirds of mammalian gene promoters. These non-methylated regions exhibit CpG content close to expected levels as they escape the depletion of CpGs observed across the methylated fraction of the genome. The unique nucleotide properties of these CpG island (CG

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36

Tyler, Michael J. 1937. "The biology and systematics of frogs : contributions submitted to The University of Adelaide / by Michael J. Tyler." 2002. http://hdl.handle.net/2440/38581.

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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.<br>Includes bibliographical references.<br>2 v. (various pagings) :<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Comprises 90 contributions to the biology and systematics of frogs, with particular emphasis upon those concerning the fauna of Australia and New Guinea. Provides an understanding of the state of knowledge

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37

Baugh, Alexander Taylor. "The development and execution of mate choice in túngara frogs." 2009. http://hdl.handle.net/2152/8457.

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Interest in the question of when and how species recognition and mate preferences emerge in animals with strong species-typical predispositions has faded since the time of the classical ethologists. In its place, the role of plasticity has surfaced as a central emphasis in the study of animal behavior. Here, I step back and examine the origin and execution of sexual behavior in a tropical frog for which auditory predispositions are key. These experiments challenge assumptions about behavioral development, auditory perception, and stereotyped behavior. First, I illustrate when and how a sex- an

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38

Park, Bradley J. "Effects of the environmental estrogen 17α-ethynylestradiol on early development of green frogs (Rana clamitans) and mink frogs (R. septentrionalis) at the Experimental Lakes Area (Ontario, Canada)". 2003. http://hdl.handle.net/1993/19987.

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Park, Bradley J. "Effects of the environmental estrogen 17[alpha]-ethynylestradiol on early development of green frogs (Rana clamitans) and mink frogs (R. septentrionalis) at the Experimental Lakes Area (Ontario, Canada)." 2003. http://hdl.handle.net/1993/19987.

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40

Chen, Jianye. "Evolution and biogeography of frogs and salamanders, inferred from fossils, morphology and molecules." Thesis, 2016. https://doi.org/10.7916/D8GX4BSN.

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Classified in the Lissamphibia, modern amphibians are the only non-amniote tetrapods living today. They consist of three morphologically distinct groups: the tailless frogs and toads (Anura), the limbless caecilians (Gymnophiona), and the tailed salamanders and newts (Urodela). With 205 species, the caecilians are highly specialized worm-like forms that live a fossorial lifestyle, with a relatively narrow distribution in the tropic rainforests of South America, Africa and Asia (Duellman and Trueb, 1994; Amphibiaweb, 2015). Salamanders, with 683 species, are widely distributed in the North Amer

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41

"SUB-LETHAL EFFECTS OF ROUNDUP ON TADPOLE DEVELOPMENT AND PREDATOR AVOIDANCE." Thesis, 2014. http://hdl.handle.net/10388/ETD-2014-01-1406.

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Roundup is a commonly used pesticide applied to agriculture and forest habitats. In Canada and parts of the North Eastern United States, these areas are generally optimal for amphibians due to the presence of small, ephemeral water bodies. While Roundup has been shown to have no adverse effects on a number of species, amphibians are one of the few groups who show high sensitivity to Roundup. My research aims to determine how an acute sub-lethal dose of Roundup affects several different facets of larvae development in wood frogs (Lithobates sylvaticus). In Chapter 2 I examined the effect of Rou

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42

Whiting, Arthur V. "Factors affecting larval growth and development of the boreal chorus frog Pseudacris maculata." Phd thesis, 2010. http://hdl.handle.net/10048/1481.

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The boreal chorus frog (Pseudacris maculata) is a widespread species but we know little of its ecology. I examined the nature and existence of competitive mechanisms operating between larvae of the boreal chorus frog and wood frog (Lithobates sylvaticus) from field, mesocosm and laboratory venues spanning nutrient concentrations. I assessed larval performance and diet of tadpoles at natural ponds by measuring tadpole growth and size at metamorphosis, and stable isotope ratios for carbon and nitrogen in tadpole tissue to examine if patterns were consistent with the operation of interspecific co

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43

Rogers, Emily Dawn. "Effects of fluoxetine on development and metamorphosis of the African clawed frog, Xenopus laevis." 2004. http://purl.galileo.usg.edu/uga%5Fetd/rogers%5Femily%5Fd%5F200408%5Fms.

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Thesis (M.S.)--University of Georgia, 2004.<br>Directed by Marsha C. Black. Includes articles submitted to Jorunal of toxicology and environmental health and Environmental toxicology and chemistry. Includes bibliographical references.

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44

Disbray, Samantha. "More than one way to catch a frog: a study of children’s discourse in an Australian contact language." 2008. http://repository.unimelb.edu.au/10187/8533.

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Children everywhere learn to tell stories. One important aspect of story telling is the way characters are introduced and then moved through the story. Telling a story to a naïve listener places varied demands on a speaker. As the story plot develops, the speaker must set and re-set these parameters for referring to characters, as well as the temporal and spatial parameters of the story. To these cognitive and linguistic tasks is the added social and pragmatic task of monitoring the knowledge and attention states of their listener. The speaker must ensure that the listener can identify the cha

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45

Lin, Chia-Hua, and 林佳樺. "Narrative Development of Taiwanese EFL Children: A First Glance at the Children's Story "Frog, Where are you?" in English and Chinese." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/70799326690195478355.

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碩士<br>國立交通大學<br>英語教學研究所<br>97<br>The purpose of the present study was to examine the narrative performance of Taiwanese EFL children in both Chinese and English. The developmental changes in children’s stories across two age groups and the similarities and differences of children’s story structures in the two languages were explored. Twenty-one children from an English-immersion kindergarten program and 22 elementary-school children from an English afterschool program participated in this study. Both groups of children were asked to tell a story in Chinese and English respectively from a wordl

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46

Edblom, Tara Lynn. "Exposure of northern leopard frog (Rana pipiens) to a pollution gradient in the Green Bay and Fox River ecosystem, Wisconsin (USA) early development, sexual development and impacts of ultraviolet-B radiation /." 2001. http://catalog.hathitrust.org/api/volumes/oclc/47181675.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2001.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 64-67).

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47

Singhal, Nishant [Verfasser]. "The role of Xenopus BRG1, a conserved subunit of SWI-SNF class of remodeling complexes, during early frog development / vorgelegt von Nishant Singhal." 2005. http://d-nb.info/976455110/34.

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Gould, Anita. "Expression of eph-family receptor tyrosine kinases and ephrins in the tadpole of the frog Xenopus laevis, and possible roles in the development of retinotectal topography." Thesis, 2001. https://thesis.library.caltech.edu/8117/1/Gould_a_2001.pdf.

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<p>Assembling a nervous system requires exquisite specificity in the construction of neuronal connectivity. One method by which such specificity is implemented is the presence of chemical cues within the tissues, differentiating one region from another, and the presence of receptors for those cues on the surface of neurons and their axons that are navigating within this cellular environment.</p> <p>Connections from one part of the nervous system to another often take the form of a topographic mapping. One widely studied model system that involves such a mapping is the vertebrate retin

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49

"Characterization of Mechanisms Influencing Cannibalism Among Larval Amphibians." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-10-2286.

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Cannibalism is a seemingly aberrant interaction, appearing counter to the fitness of individuals. Yet cannibalism is not overly uncommon, and naturally occurs among aquatic organisms, including larval amphibians. In temporary wetlands larval amphibians are in a race to complete metamorphosis before their aquatic habitat disappears. When intraspecific competition intensifies, eating conspecifics may represent a beneficial if not necessary strategy. The research presented within this thesis aims to characterize factors that influence cannibalism within populations of larval amphibians. Wood frog

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