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	Provedor de dados Rev. Bras. entomol. (2) Autor Costa,Marcelo (2) Machado,Luciana Paes de Barros (1) Mateus,Rogério P. (1) Mateus,Rogério Pincela (1) Moura,Mauricio O. (1) Moura,Mauricio Osvaldo (1) Mais... Palavra-chave Adult sex ratio (1) Developmental instability (1) Entropy (1) Generalized Procrustes Analysis (1) Geographical variation (1) Geometric morphometrics (1) Shape (1) Survivor (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2015 (1) 2010 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Adult sex ratio effects on male survivorship of Drosophila melanogaster Meigen (Diptera, Drosophilidae) Rev. Bras. entomol. Costa,Marcelo; Mateus,Rogério Pincela; Moura,Mauricio Osvaldo; Machado,Luciana Paes de Barros. The behavioral biology has a central role in evolutionary biology mainly because the antagonistic relations that occur in the sexual reproduction. One involves the effect of reproduction on the future life expectation. In this scenario, changes in male operational sex ratio could lead to an increase in mortality due to costs associated with excessive courtship and mating displays. Thus, this work experimentally altered the male sex ratio of Drosophila melanogaster Meigen, 1830, to determine its impact on mortality. The results indicated that mortality increases as the sex ratio changes, including modifications in the survivorship curve type and in the curve concavity, measured by entropy. Tipo: Info:eu-repo/semantics/article Palavras-chave: Adult sex ratio; Entropy; Survivor. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300015 Constant fluctuating asymmetry but not directional asymmetry along the geographic distribution of Drosophila antonietae (Diptera, Drosophilidae) Rev. Bras. entomol. Costa,Marcelo; Mateus,Rogério P.; Moura,Mauricio O.. ABSTRACT The population dynamics of a species tends to change from the core to the periphery of its distribution. Therefore, one could expect peripheral populations to be subject to a higher level of stress than more central populations (the center–periphery hypothesis) and consequently should present a higher level of fluctuating asymmetry. To test these predictions we study asymmetry in wing shape of five populations of Drosophila antonietae collected throughout the distribution of the species using fluctuating asymmetry as a proxy for developmental instability. More specifically, we addressed the following questions: (1) what types of asymmetry occur in populations of D. antonietae? (2) Does the level of fluctuating asymmetry vary among populations? (3)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Developmental instability; Generalized Procrustes Analysis; Geographical variation; Geometric morphometrics; Shape. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000400337 Registros recuperados: 2 Primeira ... 1 ... Última

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