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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleEcological and evolutionary factors in the morphological diversification of South American spiny ratspt_BR
dc.contributor.authorPerez, SIpt_BR
dc.contributor.authorDiniz, JAFpt_BR
dc.contributor.authorRohlf, FJpt_BR
dc.contributor.authorDos Reis, SFpt_BR
unicamp.authorIvan Perez, S. Dos Reis, Sergio Furtado Univ Estadual Campinas, Dept Biol Anim, Inst Biol, BR-13083970 Campinas, SP, Brazilpt_BR
unicamp.authorIvan Perez, S. Univ Nacl La Plata, Div Antropol, Museo La Plata, CONICET, RA-1900 La Plata, Argentinapt_BR
unicamp.authorFelizola Diniz-Filho, Jose Alexandre Univ Fed Goias, ICB, Dept Biol Geral, BR-74001970 Goiania, Go, Brazilpt_BR
unicamp.authorRohlf, F. James SUNY Stony Brook, Dept Ecol & Evolut, Stony Brook, NY 11794 USApt_BR
dc.subjectadaptive radiationpt_BR
dc.subjectcomparative methodpt_BR
dc.subjectechimyid rodentspt_BR
dc.subjectgeometric morphometricspt_BR
dc.subjectnatural selectionpt_BR
dc.subject.wosMasticatory Apparatuspt_BR
dc.subject.wosAdaptive Radiationpt_BR
dc.subject.wosCranial Shapept_BR
dc.description.abstractUnderstanding the processes underlying morphological diversification is a central goal in ecology and evolutionary biology and requires the integration of information about phylogenetic divergence and ecological niche diversity. In the present study, we use geometric morphometrics and comparative methods to investigate morphological diversification in Neotropical spiny rats of the family Echimyidae. Morphological diversification is studied as shape variation in the skull, comprising a structure composed of four distinct units: vault, base, orognathofacial complex, and mandible. We demonstrate association among patterns of variation in shape in different cranial units, levels of phylogenetic divergence, and ecological niche diversification. At the lower level of phylogenetic divergence, there is significant and positive concordance between patterns of phylogenetic divergence and cranial shape variation in all cranial units. This concordance may be attributable to the phylogenetic and shape distances being calculated between species that occupy the same niche. At higher phylogenetic levels of divergence and with ecological niche diversity, there is significant concordance between shape variation in all four cranial units and the ecological niches. In particular, the orognathofacial complex revealed the most significant association between shape variation and ecological niche diversity. This association may be explained by the great functional importance of the orognathofacial complex. (C) 2009 The Linnean Society of London, Biological Journal of the Linnean Society, 2009, 98,
dc.relation.ispartofBiological Journal Of The Linnean Societypt_BR
dc.relation.ispartofabbreviationBiol. J. Linnean Soc.pt_BR
dc.publisherWiley-blackwell Publishing, Incpt_BR
dc.identifier.citationBiological Journal Of The Linnean Society. Wiley-blackwell Publishing, Inc, v. 98, n. 3, n. 646, n. 660, 2009.pt_BR
dc.sourceWeb of Sciencept_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Cient fico e Tecnologicopt_BR
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