SciELO - Scientific Electronic Library Online

vol.54 issue3Nest structure and occurrence of three species of Azteca (Hymenoptera, Formicidae) in Cecropia pachystachya (Urticaceae) in non-floodable and floodable pantanal areasAnt fauna (Hymenoptera, Formicidae) associated to arboreal nests of Nasutitermes spp: (Isoptera, Termitidae) in a cacao plantation in southeastern Bahia, Brazil author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista Brasileira de Entomologia

Print version ISSN 0085-5626


COSTA, Marcelo; MATEUS, Rogério Pincela; MOURA, Mauricio Osvaldo  and  MACHADO, Luciana Paes de Barros. Adult sex ratio effects on male survivorship of Drosophila melanogaster Meigen (Diptera, Drosophilidae). Rev. Bras. entomol. [online]. 2010, vol.54, n.3, pp.446-449. ISSN 0085-5626.

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.

Keywords : Adult sex ratio; entropy; survivor.

        · abstract in Portuguese     · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License