Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil

Detalhes bibliográficos
Autor(a) principal: Tozetti, Alexandro Marques
Data de Publicação: 2008
Outros Autores: Martins, Marcio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da FURG (RI FURG)
Texto Completo: http://repositorio.furg.br/handle/1/74
Resumo: Habitat use affects food intake, reproductive fitness and body temperature control in reptiles. Habitat use depends on both the characteristics of the animal and the environmental heterogeneity. In this study we investigated habitat use in a population of the South-American rattlesnake, Crotalus durissus, in a cerrado (the Brazilian savanna) remnant, in south-eastern Brazil. In general, snakes appeared to be thermal generalists. However, they showed substrate temperature preferences in the rainy season, when they selected colder substrates during the day and warmer substrates at night. Individuals were predominantly active on the surface and more frequently found under bushes. Furthermore, in general, the principal component analysis results indicate that rattlesnakes are generalists regarding the microhabitat variables examined in this study. These habitat characteristics, associated with a low thermal selectivity, indicate that rattlesnakes are able to colonize deforested areas where shade occurrence and vegetation cover are similar to those in the cerrado.
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spelling Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern BrazilCrotalus DurissusHabitat UseTadio-telemetryEcologyHabitat use affects food intake, reproductive fitness and body temperature control in reptiles. Habitat use depends on both the characteristics of the animal and the environmental heterogeneity. In this study we investigated habitat use in a population of the South-American rattlesnake, Crotalus durissus, in a cerrado (the Brazilian savanna) remnant, in south-eastern Brazil. In general, snakes appeared to be thermal generalists. However, they showed substrate temperature preferences in the rainy season, when they selected colder substrates during the day and warmer substrates at night. Individuals were predominantly active on the surface and more frequently found under bushes. Furthermore, in general, the principal component analysis results indicate that rattlesnakes are generalists regarding the microhabitat variables examined in this study. These habitat characteristics, associated with a low thermal selectivity, indicate that rattlesnakes are able to colonize deforested areas where shade occurrence and vegetation cover are similar to those in the cerrado.2010-10-01T11:34:04Z2010-10-01T11:34:04Z2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfTOZETTI, A. M.; MARTINS, M. Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil. Journal of Natural History,v. 42, p. 1435-1444, 2008.http://repositorio.furg.br/handle/1/74engTozetti, Alexandro MarquesMartins, Marcioinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2011-09-19T20:23:43Zoai:repositorio.furg.br:1/74Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2011-09-19T20:23:43Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false
dc.title.none.fl_str_mv Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
title Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
spellingShingle Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
Tozetti, Alexandro Marques
Crotalus Durissus
Habitat Use
Tadio-telemetry
Ecology
title_short Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
title_full Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
title_fullStr Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
title_full_unstemmed Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
title_sort Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil
author Tozetti, Alexandro Marques
author_facet Tozetti, Alexandro Marques
Martins, Marcio
author_role author
author2 Martins, Marcio
author2_role author
dc.contributor.author.fl_str_mv Tozetti, Alexandro Marques
Martins, Marcio
dc.subject.por.fl_str_mv Crotalus Durissus
Habitat Use
Tadio-telemetry
Ecology
topic Crotalus Durissus
Habitat Use
Tadio-telemetry
Ecology
description Habitat use affects food intake, reproductive fitness and body temperature control in reptiles. Habitat use depends on both the characteristics of the animal and the environmental heterogeneity. In this study we investigated habitat use in a population of the South-American rattlesnake, Crotalus durissus, in a cerrado (the Brazilian savanna) remnant, in south-eastern Brazil. In general, snakes appeared to be thermal generalists. However, they showed substrate temperature preferences in the rainy season, when they selected colder substrates during the day and warmer substrates at night. Individuals were predominantly active on the surface and more frequently found under bushes. Furthermore, in general, the principal component analysis results indicate that rattlesnakes are generalists regarding the microhabitat variables examined in this study. These habitat characteristics, associated with a low thermal selectivity, indicate that rattlesnakes are able to colonize deforested areas where shade occurrence and vegetation cover are similar to those in the cerrado.
publishDate 2008
dc.date.none.fl_str_mv 2008
2010-10-01T11:34:04Z
2010-10-01T11:34:04Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv TOZETTI, A. M.; MARTINS, M. Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil. Journal of Natural History,v. 42, p. 1435-1444, 2008.
http://repositorio.furg.br/handle/1/74
identifier_str_mv TOZETTI, A. M.; MARTINS, M. Habitat use by the South-American rattlesnake (Crotalus durissus) in south-eastern Brazil. Journal of Natural History,v. 42, p. 1435-1444, 2008.
url http://repositorio.furg.br/handle/1/74
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da FURG (RI FURG)
instname:Universidade Federal do Rio Grande (FURG)
instacron:FURG
instname_str Universidade Federal do Rio Grande (FURG)
instacron_str FURG
institution FURG
reponame_str Repositório Institucional da FURG (RI FURG)
collection Repositório Institucional da FURG (RI FURG)
repository.name.fl_str_mv Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)
repository.mail.fl_str_mv
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