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1501“…In resolving the vertebrate tree of life, two fundamental questions remain: 1) what is the phylogenetic position of turtles within amniotes, and 2) what are the relationships between the three major lissamphibian (extant amphibian) groups? These relationships have historically been difficult to resolve, with five different hypotheses proposed for turtle placement, and four proposed branching patterns within Lissamphibia. …”
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1502“…Using published phylogenetic hypotheses, we gathered data on the oldest intraspecific diversification event within mammal, bird, freshwater fish, amphibian, and reptile species from temperate-zone areas. …”
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1503“…A major life stage transition in birds and other oviparous sauropsids is the hatching of the cleidoic egg. Not unlike amphibian metamorphosis, hatching in these species can be regarded as a transition from a relatively well-protected “aqueous” environment to a more hazardous and terrestrial life outside the egg, a transition in which thyroid hormones (THs) (often in concert with glucocorticoids) play an important role. …”
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1504“…Possible infection routes of anura amphibian balantidia were discussed.…”
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1505por Blackburn, David C, Siler, Cameron D, Diesmos, Arvin C, McGuire, Jimmy A, Cannatella, David C, Brown, Rafe M“…Living amphibians exhibit a diversity of ecologies, life histories, and species-rich lineages that offers opportunities for studies of adaptive radiation. …”
Publicado 2013
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1506“…Larval survival was also dependent on the type of salt (NaCl or MgCl(2)) the larvae were exposed to, and was lowest in MgCl(2), a widely-used chemical deicer that, unlike NaCl, amphibian larvae do not have an evolutionary history of regulating at high levels. …”
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1507por Tata, Purushothama Rao, Mou, Hongmei, Pardo-Saganta, Ana, Zhao, Rui, Prabhu, Mythili, Prabhu, Mythili, Law, Brandon M., Vinarsky, Vladimir, Cho, Josalyn L., Breton, Sylvie, Sahay, Amar, Medoff, Benjamin D., Rajagopal, Jayaraj“…Cellular plasticity contributes to the regenerative capacity of plants, invertebrates, teleost fishes, and amphibians. In vertebrates, differentiated cells are known to revert into replicating progenitors, but these cells do not persist as stable stem cells. …”
Publicado 2013
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1508por Robert, Jacques, Grayfer, Leon, Edholm, Eva-Stina, Ward, Brian, De Jesús Andino, Francisco“…Notably, infection studies of the amphibian Xenopus laevis with the ranavirus Frog Virus 3 (FV3) have revealed that although the adult frog immune system is efficient at controlling RV infections, residual quiescent virus can be detected in mononuclear phagocytes of otherwise asymptomatic animals following the resolution of RV infections. …”
Publicado 2014
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1509Publicado 2014“…Here, we describe a database developed to facilitate access to sexual system and sex chromosome information, with data on sexual systems from 11,038 plant, 705 fish, 173 amphibian, 593 non-avian reptilian, 195 avian, 479 mammalian, and 11,556 invertebrate species.…”
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1510“…Here we describe a procedure for in vivo labeling of sensory neurons and subsequent visualization of axons in the olfactory system of larvae of the amphibian Xenopus laevis. To stain sensory neurons in the olfactory organ we adopt the electroporation technique. …”
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1511“…Amphibian eggs have been widely used to study embryonic development. …”
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1512“…One model is based on insect and amphibian regeneration studies. This model proposes that growth is directed by pattern, and growth takes place by intercalation at a growth discontinuity; therefore, proliferation should surround the discontinuity. …”
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1513“…Our study shows that management and conservation must consider nontrophic relationships and that human “ecosystem engineering” can play a vital role in efforts against the “global amphibian decline.”…”
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1514“…Further studies are necessary in order to correlate the changes observed here with different chemical stressors in water, as well as to elucidate mechanisms of toxicity induced by pesticides in amphibian species endemic to the Pampa biome. Nevertheless, our study validates Phyllomedusa iheringii as a valuable bioindicator in environmental studies.…”
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1515“…Teleost and amphibian prey undertake fast-start escape responses during a predatory attack in an attempt to avoid being captured. …”
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1516“…These data together (a) show that the role of Lsh in DNA methylation is conserved in plants, amphibian, fish, and mice and (b) support a model in which Lsh contributes to Dnmt1 binding to chromatin, explaining how its loss can potentially lead to perturbations in DNA methylation maintenance.…”
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1517“…Classic experiments in amphibian embryos revealed the tissue interactions involved in germ layer formation and provided the groundwork for the identification of secreted and intracellular factors involved in this process. …”
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1518por Tanaka, Hibiki Vincent, Ng, Nathaniel Chuen Yin, Yang Yu, Zhan, Casco-Robles, Martin Miguel, Maruo, Fumiaki, Tsonis, Panagiotis A., Chiba, Chikafumi“…The newt, a urodele amphibian, is able to repeatedly regenerate its limbs throughout its lifespan, whereas other amphibians deteriorate or lose their ability to regenerate limbs after metamorphosis. …”
Publicado 2016
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1519por Hudson, M. A., Young, R. P., D’Urban Jackson, J., Orozco-terWengel, P., Martin, L., James, A., Sulton, M., Garcia, G., Griffiths, R. A., Thomas, R., Magin, C., Bruford, M. W., Cunningham, A. A.“…Amphibian chytridiomycosis has caused precipitous declines in hundreds of species worldwide. …”
Publicado 2016
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1520por Price, Stephen J., Garner, Trenton W. J., Cunningham, Andrew A., Langton, Tom E. S., Nichols, Richard A.“…Our analysis characterized localized spread from nearby ponds, consistent with amphibian dispersal, but also revealed a highly significant trend for elevated rates of additional outbreaks in localities with higher human population density—pointing to human activities in also spreading the virus. …”
Publicado 2016
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