Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications

Detalhes bibliográficos
Autor(a) principal: Freitas, Jorge Nei Silva de
Data de Publicação: 2008
Outros Autores: El-Hani, Charbel Niño, Rocha, Pedro Luís Bernardo da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6326
Resumo: Acesso restrito: Texto completo. p. 389-397
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spelling Freitas, Jorge Nei Silva deEl-Hani, Charbel NiñoRocha, Pedro Luís Bernardo daFreitas, Jorge Nei Silva deEl-Hani, Charbel NiñoRocha, Pedro Luís Bernardo da2012-07-05T12:15:17Z20080179-1613http://www.repositorio.ufba.br/ri/handle/ri/6326v. 114, n. 4Acesso restrito: Texto completo. p. 389-397In this work we explored the evolution of sociality in cursorial echimyids by comparing affiliation among three species of Trinomys and one species of Thrichomys. We captured specimens of Trinomys yonenagae, Trinomys albispinus minor, and Thrichomys apereoides in areas of the Brazilian semiarid Caatinga, and Trinomys iheringi denigratus in one area of Atlantic Forest. For each species, we recorded 12 intra-sexual dyadic encounters in a neutral arena (six between males and six between females) in order to test the hypothesis that species and sex influence level of affiliation. This response variable was assessed based on an affiliation index, calculated as the proportion of the total number of affiliative behaviors to the total number of social behaviors exhibited by the dyad during each encounter. Hypothesis test was performed by means of a parametric two-way anova. The test was able to detect significant differences only among species, not among sexes. Trinomys yonenagae was the most affiliative species, while T. apereoides and T. albispinus minor were the most agonistic ones. Trinomys iheringi denigratus showed an intermediate pattern. We suggest, based on out-group comparison, that affiliation in Trinomys increased in the lineage containing T. iheringi denigratus and T. yonenagae and that higher affiliation in the last species can be adaptive to the life in the desert-like habitat where it lives.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-07-05T12:15:17Z No. of bitstreams: 1 __onlinelibrary.wiley.co...603c5728e38a6793cf3161f6efd5c.pdf: 112732 bytes, checksum: da513fddf236fad42c3fe8e2b5e5b0d9 (MD5)Made available in DSpace on 2012-07-05T12:15:17Z (GMT). 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dc.title.pt_BR.fl_str_mv Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
dc.title.alternative.pt_BR.fl_str_mv Ethology
title Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
spellingShingle Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
Freitas, Jorge Nei Silva de
title_short Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
title_full Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
title_fullStr Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
title_full_unstemmed Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
title_sort Affiliation in Four Echimyid Rodent Species based on Intrasexual Dyadic Encounters: Evolutionary Implications
author Freitas, Jorge Nei Silva de
author_facet Freitas, Jorge Nei Silva de
El-Hani, Charbel Niño
Rocha, Pedro Luís Bernardo da
author_role author
author2 El-Hani, Charbel Niño
Rocha, Pedro Luís Bernardo da
author2_role author
author
dc.contributor.author.fl_str_mv Freitas, Jorge Nei Silva de
El-Hani, Charbel Niño
Rocha, Pedro Luís Bernardo da
Freitas, Jorge Nei Silva de
El-Hani, Charbel Niño
Rocha, Pedro Luís Bernardo da
description Acesso restrito: Texto completo. p. 389-397
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2012-07-05T12:15:17Z
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 http://www.repositorio.ufba.br/ri/handle/ri/6326
dc.identifier.issn.none.fl_str_mv 0179-1613
dc.identifier.number.pt_BR.fl_str_mv v. 114, n. 4
identifier_str_mv 0179-1613
v. 114, n. 4
url http://www.repositorio.ufba.br/ri/handle/ri/6326
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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