Size-Dependent Selective Mechanisms on Males and Females and the Evolution of Sexual Size Dimorphism in Frogs

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorNali, Renato C.
dc.creatorZamudio, Kelly R.
dc.creatorHaddad, Celio F. B.
dc.creatorPrado, Cynthia P. A.
dc.date2015-03-18T15:54:35Z
dc.date2016-10-25T20:28:30Z
dc.date2015-03-18T15:54:35Z
dc.date2016-10-25T20:28:30Z
dc.date2014-12-01
dc.date.accessioned2017-04-06T07:09:30Z
dc.date.available2017-04-06T07:09:30Z
dc.identifierAmerican Naturalist. Chicago: Univ Chicago Press, v. 184, n. 6, p. 727-740, 2014.
dc.identifier0003-0147
dc.identifierhttp://hdl.handle.net/11449/116969
dc.identifierhttp://acervodigital.unesp.br/handle/11449/116969
dc.identifier10.1086/678455
dc.identifierWOS:000345853000007
dc.identifierhttp://dx.doi.org/10.1086/678455
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/927616
dc.descriptionSexual size dimorphism (SSD) varies in animals from male biased to female biased. The evolution of SSD is potentially influenced by a number of factors, such as territoriality, fecundity, and temporal breeding patterns (explosive vs. prolonged). In general, frogs show female-biased SSD with broad variance among species. Using comparative methods, we examine how different selective forces affect male and female sizes, and we test hypotheses about size-dependent mechanisms shaping SSD in frogs. Male size was weakly associated with SSD in all size classes, and we found no significant association among SSD, male size, temporal breeding pattern, and male territoriality. In contrast, female size best explained SSD variation across all size classes but especially for small-bodied species. We found a stronger evolutionary association between female body size and fecundity, and this fecundity advantage was highest in explosively breeding species. Our data indicate that the fecundity advantage associated with female body size may not be linear, such that intermediate and large females benefit less with body size increases. Therefore, size-dependent selection in females associated with fecundity and breeding patterns is an important mechanism driving SSD evolution in frogs. Our study underscores the fact that lineage-specific ecology and behavior should be incorporated in comparative analyses of animal SSD.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.publisherUniv Chicago Press
dc.relationAmerican Naturalist
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjecttemporal breeding pattern
dc.subjectmale territoriality
dc.subjectfemale fecundity
dc.subjectsexual selection
dc.subjectRensch's rule
dc.subjectphylogenetic comparative methods
dc.titleSize-Dependent Selective Mechanisms on Males and Females and the Evolution of Sexual Size Dimorphism in Frogs
dc.typeOtro


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