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Showing 1 to 7 of 7 for “"Viperidae"”.
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Revisão sistemática do gênero Lachesis Daudin, 1803 (Serpentes: Viperidae: Crotalinae)
The genus Lachesis Daudin, 1803 was split-up in six populations in order to evaluate the taxonomic status and the phylogenetic relationships among such taxa. Characters of external morphology and hemipenis were used. The Central American species L. melanocephala and L. stenophrys are recognized as …
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Geographic Variation in the Morphology of <i>Crotalus horridus</i> (Serpentes: Viperidae)
<p>The Timber Rattlesnake (<em>Crotalus horridus</em>) occurs in discontinuous populations throughout the eastern and central United States. The species exhibits high levels of polymorphism in morphological traits, especially in coloration and pattern. Previous studies recognized either distinct …
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Genetic Structure of the Copperhead (Viperidae: Agkistrodon Contortrix Mokasen) at its Most Northern Distribution
<p>The focus of molecular studies in North American pitvipers has been on species that warrant conservation concern, such as Timber (<em>Crotalus horridus</em>) and Massasauga rattlesnakes (<em>Sistrurus catenatus</em>). Scant effort has been directed towards the molecular ecology of the Copperhead …
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Purificação e caracterização parcial de uma enzima trombina-símile da peçonha da serpente Bothrops leucurus (viperidae)
A serpente Bothrops leucurus (jararaca do rabo branco), maior responsável pelos acidentes botrópicos no Estado da Bahia, também tem ocorrência registrada em Pernambuco. As alterações na coagulação sangüínea são uma característica relevante no envenenamento provocado pela peçonha de B. leucurus. …
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Optimizing pharmacodynamics and evaluating echocardiographic effects of alfaxalone sedation in bearded dragons (Pogona vitticeps) and prairie rattlesnakes (Crotalus viridis)
… act as a model for that species and other Viperidae housed in zoological institutions or studied in free-ranging populations that require sedation to facilitate safe handling, examination, and minimally invasive procedures. A group of bearded dragons (n=10) and prairie rattlesnakes (n=10) …
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Charakterisierung von reptilienpathogenen Paramyxoviren und Analyse des prokaryotisch exprimierten partiellen Fusionsgens
… isolated from 18 snakes (families Colubridae, Viperidae, and Crotalidae) showing respiratory symptoms and neuronal diseases were investigated. Identifying the isolates as paramyxoviruses showing characteristic cytopathic effect, was carried out by electronmicroscopy and RNA-PCR of two partial …
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Physiological and behavioral consequences of reptilian life in the slow lane: Ecology of beaded lizards and rattlesnakes.
Although reptiles are well known for their low energy requirements and high efficiencies of biomass conversion, few studies have addressed the ecology and energetics of species with very low activity levels. I investigated the ecology and energetics of two such reptilian groups: helodermatid …