SciELO - Scientific Electronic Library Online

vol.11 issue2Ferns composition and diversity differ between Restinga and Lowland Rainforest areas in the Serra do Mar?Seed mass of Tecoma stans L. Juss. ex Kunth (Bignoniaceae): effects on emergence and seedling development under full sun and shade author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Biota Neotropica

Print version ISSN 1806-129XOn-line version ISSN 1676-0611


DEVICARI, Mariana; LOPES, Adriana Rios  and  SUESDEK, Lincoln. Wing sexual dimorphism in Aedes scapularis (Diptera: Culicidae). Biota Neotrop. [online]. 2011, vol.11, n.2, pp.165-169. ISSN 1806-129X.

The sex in mosquitoes (Culicidae) is relevant for faunistic and epidemiological surveys because only females are competent to transmit pathogens. Sexual dimorphism comprising genitalia and cephalic appendages is ordinarily visible in culicids. Wings may be also dimorphic and thus be complementary to traditional sexing methods. Nevertheless, such dimorphism is not easily noticeable to direct observation. Aiming to formally describe the sexual dimorphism in Aedes scapularis, a mosquito species competent for virus and filariae, wings of males and females were compared using geometric morphometrics and multivariate statistics. We sampled populations from São Paulo and Pariquera-Açu municipalities (State of São Paulo). Concerning wing shape, the sexual dimorphism was evident from blind reclassification tests which were 100% accurate, independently of the geographical origin of samples. On the other hand, wing size was sexually dimorphic only in the population from Sao Paulo. Presumably, wing shape is evolutionarily more stable than its size, an interpretation which is in accordance with the theory posed by Dujardin (2008b). That theory indicates wing shape would be composed of genetically-determined quantitative characters, and marginally influenced by non-genetic factors, whereas wing size would be more labile and predominantly influenced by the environment.

Keywords : Aedini; Ochlerotatus; microevolution; mosquito; vector.

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


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