Data/hora: 10/06/2024 08:05:26

Provedor de dados: | 74
País: | Brazil
Título: | Haldane's rule and other aspects of reproductive isolation observed in the Anastrepha fraterculus complex (Diptera: Tephritidae)
Autores: | Selivon,Denise; Perondini,André L.P.; Morgante,João S.
Data: | 1999-12-01
Ano: | 1999
Resumo: | Some aspects of reproductive isolation between allopatric populations of two closely related species of the Anastrepha fraterculus complex (A. fraterculus sp. 1 and sp. 2) were evaluated in laboratory conditions. Most of the crosses were fertile in each species as well as between sp. 2 females and sp. 1 males. In the reciprocal cross only 41.7% of the matings yielded viable progeny. Egg hatching occurred at similar rates within the two species, but was significantly lower in the crosses between the species. Adult emergence did not differ significantly among crosses. The sex ratio of adult progeny within each species, as well as in the hybrid progeny derived from sp. 1 females crossed to sp. 2 males, did not differ from the expected 1:1 ratio. However, in the crosses between sp. 2 females to sp. 1 males, a significant deviation in the sex ratio in favor of females was observed, according to the Haldane's rule. The results reinforce previous data which indicated that A. fraterculus sp. 1 and A. fraterculus sp. 2 are distinct biological entities.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571999000400007
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47571999000400007
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.22 n.4 1999
Fonte: | info:eu-repo/semantics/openAccess