Consulta: subjectFacets:"Viperidae"
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Data/hora: 09/06/2024 12:38:20

POLYACRYLAMIDE GEL ELECTROPHORESIS AS A TOOL FOR THE TAXONOMIC IDENTIFICATION OF SNAKES FROM THE ELAPIDAE AND VIPERIDAE FAMILIES
Provedor de dados: Journal of Venomous Animals and Toxins
Autores: SOARES,A. M.; ANZALONI PEDROSA,L. H.; FONTES,M. R. M.; DA SILVA,R. J.; GIGLIO,J. R.
Polyacrylamide gel electrophoresis (PAGE) for basic proteins may be a useful tool for the characterization of whole snake venoms and for the taxonomic classification of snakes of the Elapidae and Viperidae families. However, due to the close proximity of molecular weights among toxins bearing different net charges, sodium dodecyl sulfate (SDS) - PAGE was not able to provide an efficient differentiation. This article reports the electrophoretic analysis of several venoms from the genera Micrurus, Bothrops, Bothriopsis, Crotalus and Lachesis and shows a typical and distinctive electrophoretic profile for each species, with intraspecific and geographic variations. Even in cases in which extreme morphological similarities were present, such as between B....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Snake venoms; Basic toxins; Polyacrylamide gel electrophoresis; Elapidae; Viperidae.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301998000200005

Frequency of rhabdiasid nematodes in wild Crotalus durissus terrificus (serpentes, viperidae) from Botucatu region, São Paulo state, Brazil
Provedor de dados: Journal of Venomous Animals and Toxins Including Tropical Diseases
Autores: Silva,R. J.; Nogueira,M. F.; Barrella,T. H.; Takahira,R. K.
The aim of the present study was to evaluate the frequency of rhabdiasid nematodes in recently captured Crotalus durissus terrificus snakes from São Paulo State, Brazil. Fifty snakes (34 males and 16 females) were studied and each one was evaluated for the presence of that nematode at the moment of receipt at the Institution and after 90 days of quarantine inside individual cages. Tracheopulmonary washeswere examined. Snakes that died during quarantine underwent necropsy and lung examination. Analysis of the results obtained at the two evaluation times (0 and 90 days), in addition to the data obtained during necropsies, showed that 44% (18 males and 4 females) of the C. d. terrificus snakes were naturally infected by rhabdiasid nematodes. These data...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Rhabdias; Nematoda; Frequency; Crotalus durissus terrificus; Viperidae; Snakes.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000100009

Microhabitat use by species of the genera Bothrops and Crotalus (Viperidae) in semi-extensive captivity
Provedor de dados: Journal of Venomous Animals and Toxins Including Tropical Diseases
Autores: Gomes,CA; Almeida-Santos,SM.
Many factors influence microhabitat including climate and the occurrence of predators, prey and suitable shelters. The influence of predators in a semi-extensive breeding system is minimized due to frequent monitoring of the area. This situation enables the independent analysis of such other variables as refuges and temperature. Some specimens of the Viperidae family are kept in a semi-extensive breeding system at the Butantan Institute for display and study. These animals are widely distributed in the Atlantic Forest and Cerrado, two biomes with distinct climatic characteristics. We compared the daily activity pattern and microhabitat use of the species Bothrops jararaca and Crotalus durissus terrificus. Our main questions were whether rattlesnakes and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microhabitat selection; Snakes; Thermoregulation; Viperidae.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000400007

A taxonomic bibliography of the South American snakes of the Crotalus durissus complex (Serpentes, Viperidae)
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: VANZOLINI,PAULO E.; CALLEFFO,MYRIAM E.V.
A survey is made of the taxonomic literature on South American rattlesnakes (genus Crotalus, family Viperidae). Two main areas are emphasized: the attribution of the names proposed in the eighteenth century by Linnaeus and Laurenti, and the current scheme of division in subspecies. The attribution of names is examined based on the original descriptions and on relevant previous and contemporary literature. The presently adopted scheme, proposed by Klauber (1941, 1972) is found not entirely satisfactory, but reasonable enough - besides being hallowed by use. The scheme of geographical differentiation, intrinsically important and with broad practical implications (differentiation of the venom) is found to be the culmination of a long series of deficient...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crotalus durissus; Viperidae; Geographical differentidation; Differentiation of the venom.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000100005

Seleção de hábitat em duas espécies de jararaca (Bothrops moojeni Hoge e B. neuwiedi Wagler) (Serpentes, Viperidae)
Provedor de dados: Brazilian Journal of Biology
Autores: BORGES,R. C.; ARAUJO,A. F. B.
Foram utilizados dados relativos ao uso de hábitat por espécimes de Bothrops moojeni e B. neuwiedi (Serpentes, Viperidae) provenientes de doações ao Jardim Zoológico de Brasília, Universidade de Brasília, Jardim Botânico do Distrito Federal e de um experimento de semicativeiro. Os resultados indicaram forte segregação de hábitat entre ambas as espécies, sendo B. neuwiedi amplamente restrita a áreas abertas, enquanto B. moojeni utiliza principalmente a mata e o ecótono. Não foi encontrada diferença significativa na seleção de hábitat entre indivíduos mantidos isolados e aqueles confinados em um mesmo cercado. Assim, aparentemente, uma espécie não interfere diretamente na seleção de hábitat da outra.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Serpentes; Viperidae; Bothrops; Jararaca; Seleção de hábitat; Cerrado; Semi-cativeiro.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081998000400006