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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Wing sexual dimorphism of pathogen-vector culicids

Texto completo
Virginio, Flavia [1, 2] ; Vidal, Paloma Oliveira [1, 2] ; Suesdek, Lincoln [1, 3]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Inst Butantan, Lab Parasitol, Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Inst Ciencias Biomed, Programa Posgrad Biol Relacao Patogeno Hospedeiro, BR-05508 Sao Paulo, SP - Brazil
[3] Univ Sao Paulo, Inst Trop Med, Programa Posgrad Med Trop, BR-05508 Sao Paulo, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: PARASITES & VECTORS; v. 8, MAR 14 2015.
Citações Web of Science: 13

Background: Sexual dimorphism in animals has been studied from different perspectives for decades. In 1874 Darwin hypothesized that it was related to sexual selection, and even after nearly 140 years, when additional empirical data has become available and the subject has been investigated from a contemporary viewpoint, this idea is still supported. Although mosquito (Culicidae) wings are of great importance as they play a sex-specific role, little is known about wing sexual dimorphism in these pathogen-vector insects. Detection and characterization of wing sexual dimorphism in culicids may indirectly enhance our knowledge of their epidemiology or reveal sex-linked genes, aspects that have been discussed by vector control initiatives and developers of genetically modified mosquitoes. Methods: Using geometric morphometrics, we carried out a comparative assessment of wing sexual dimorphism in ten culicid species of medical/veterinary importance from genera Culex, Aedes, Anopheles and Ochlerotatus collected in Brazil. Results: Discriminant analysis revealed significant sexual dimorphism in all the species studied, indicating that phenotypic expression of wing shape in mosquitoes is indeed sex-specific. A cross-validated test performed to reclassify the sexes with and without allometry yielded very similar results. Mahalanobis distances among the ten species showed that the species had different patterns of shape sexual dimorphism and that females are larger than males in some species. Conclusion: Wing morphology differed significantly between species. The finding of sexual dimorphism in all the species would suggest that the wing geometry of Culicidae is canalized. Although sexual dimorphism is prevalent, species-specific patterns occur. Allometry was not the main determinant of sexual dimorphism, which suggests that sexual selection or other evolutionary mechanisms underlie wing sexual dimorphism in these insects. (AU)

Processo FAPESP: 10/15039-1 - Caracterização molecular e morfológica de populações de Aedes aegypti (Diptera: Culicidae) no estado de São Paulo
Beneficiário:Paloma Oliveira Vidal
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 06/02622-5 - Caracterização populacional de Culicidae de interesse médico: aspectos moleculares, cariotípicos e morfométricos
Beneficiário:Lincoln Suesdek Rocha
Linha de fomento: Auxílio à Pesquisa - Regular