Production of polymorphic sperm by anopheline mosquitoes and their fate within the female genital tract.

Autor(es): Klowden Marc J; Chambers Gail M

Resumo: The males of two mosquito species within the Anopheles gambiae complex, An. gambiae s.s. and An. quadriannulatus, as well as males of An. darlingi, produced sperm of significantly varying lengths, while a sperm polymorphism was absent in Aedes aegypti and other anophelines not suspected of belonging to species complexes. The polymorphic distribution of these sperm lengths was not significantly different in smaller adult males that were reared on a low larval diet. The reproductive tract of the female was more likely to contain larger sperm, but overall sperm retention varied depending on the size of the female and the volume of the spermatheca she contained. The presence of a sperm polymorphism may be a factor that has promoted speciation, as well as providing an indication that females may mate multiply.

Palavras-Chave: Sperm; Polymorphism; Sexual selection; Anopheles; Gambiae; Darlingi; Quadriannulatus

Imprenta: Journal of Insect Physiology, v. 50, n. 12, p. 1163-1170, 2004

Identificador do objeto digital: 10.1016/j.jinsphys.2004.10.008

Descritores: Aedes aegypti - Cell ; Aedes aegypti - DNA ; Aedes aegypti - Pathogenesis

Data de publicação: 2004