Response to Selection for Increased Hybridization Between Drosophila melanogaster Females and D. simulans Males

Izquierdo, Jose Antonio Avilés; Carracedo, Maria C.; Piñeiro, R.; Casares, P.

doi:10.1093/oxfordjournals.jhered.a111166

Cited by 20 publications

(16 citation statements)

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“…Some studies have been undertaken with Drosophila species-pairs (Kawanishi & Watanabe, 1981;Coyne, 1989Coyne, , 1992Carracedo et al, 1995) that show that genes for sexual isolation are widely distributed over the genome. However, there are differences in their inheritance modes, as some species have genes with additive effects (Carracedo et al, 1989;Izquierdo et al, 1992;Uenoyama & Inoue, 1995), whereas others show dominance for high hybridization frequency (Coyne, 1989(Coyne, , 1992Welbergen et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Genetics of hybridization between Drosophila simulans females and D. melanogaster males

et al. 1998

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Drosophila simulans and D. melanogaster are sibling cosmopolitan species with imperfect ethological isolation. Hybridization is easy between D. melanogaster females and D. simulans males, but the reciprocal cross has been traditionally considered as very scarce and little is known about the environmental and genetic factors that affect it. We used classical genetic analyses to determine the influence of each major chromosome on the breakdown of sexual isolation between females of D. simulans and D. melanogaster males. In addition, we have made a first attempt to locate the genetic systems involved in this process. At least two genes, or two groups of genes, are responsible for hybridization, located in the X chromosome and in the left arm of chromosome II. The inheritance mode of both genetic systems is different. The genes in the X chromosome show dominance for high levels of hybridization, whereas those in chromosome II show dominance for low levels. These results contrast with other investigations on the melanogaster subgroup, suggesting independent evolutionary events during the speciation process in each species.

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Section: Introductionmentioning

confidence: 99%

Genetics of hybridization between Drosophila simulans females and D. melanogaster males

et al. 1998

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“…However, given the complexity of mating, it would not be a surprise to find that different populations have different genes affecting the same type of sexual isolation. For instance, and unlike our assumption of a single factor, there could be many genes with additive effects for isolation between the same two species, as was inferred from the slow response to artificial selection for increasing sexual isolation found in two independent studies (Eoff, 1977;Izquierdo et al, 1992).…”

Section: Discussionmentioning

confidence: 89%

“…As pointed out above, males of D. simulans are known to play an important role in interspecific mating with D. melanogaster females, since (i) genetic variation for mating by males has been detected (Watanabe et al, 1977;Carracedo and Casares, 1985;Carracedo et al, 2000b) and (ii) there is a response to artificial selection for increasing heterospecific matings (Eoff, 1977;Izquierdo et al, 1992). Which male characteristics are involved in a greater or lesser heterospecific mating frequency is, however, not known.…”

Section: Introductionmentioning

confidence: 99%

Genetics of Drosophila simulans male mating discrimination in crosses with D. melanogaster

2003

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The genetic bases of sexual isolation between Drosophila melanogaster and D. simulans have been mainly studied in females, and there is little information about the role of the males in interspecific mating discrimination. Using D. simulans synthetic lines with compound chromosomes from a population of the Seychelles Islands (high frequency of interspecific mating) and a multimarker strain (low frequency), we show that D. simulans males play an important role in discriminating D. melanogaster females.The genetics of male discrimination fits well with the inheritance mode of a single locus, dominant for sexual isolation, located in chromosome II near the net mutation (2L-0.0). The heterospecific mating success of the male was not related to his sexual vigor. The specific load of male cuticular hydrocarbons was counted as a possible source of discrimination used by the D. melanogaster female.

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“…It has been shown that hybridization and female sexual receptivity have interpopulational and intrapopulational variation (Parsons, 1972;Watanabe et al, 1977;Carracedo & Casares, 1985;Carracedo et al, 1991). Genes involved in hybridization appear to be polygenic with additive effects, as is shown by both the response to artificial selection (Eoff, 1975(Eoff, , 1977Izquierdo et al, 1992) and the results of crosses between lines with high and low hybridization values (Carracedo et al, 1989). Female receptivity also has an important genetic determination characterized by additive genes and some dominance for high levels of expression, as has been found in a diallel study , and in a successful artificial selection programme (Piñeiro eta!., 1993).…”

Section: Introductionmentioning

confidence: 90%

“…Selection for increasing hybridization between D. melanogaster females and D. simulans males was successful (Izquierdo et al, 1992) giving rise to a D. The substitution lines were obtained using a D.…”

Section: Strainsmentioning

confidence: 99%

Chromosomal substitution analysis of receptivity and sexual isolation in Drosophila melanogaster females

1995

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A chromosome substitution analysis was carried out in Drosophila melanogaster to elucidate the contribution of the X, II and III chromosomes to female receptivity, and to sexual isolation with its sibling species D. simulans. Two lines from the same base population with extreme phenotypes, the one showing high receptivity and weak isolation and the other showing low receptivity and strong isolation, were used. Genes involved in receptivity were located in chromosome III whereas those affecting sexual isolation were located in all the three chromosomes. These results indicate that the direct relationship between female receptivity and sexual isolation previously detected in D. melanogaster could be because of the occurrence of genes common to the two traits in the chromosome III.

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Response to Selection for Increased Hybridization Between Drosophila melanogaster Females and D. simulans Males

Cited by 20 publications

References 0 publications

Genetics of hybridization between Drosophila simulans females and D. melanogaster males

Genetics of hybridization between Drosophila simulans females and D. melanogaster males

Genetics of Drosophila simulans male mating discrimination in crosses with D. melanogaster

Chromosomal substitution analysis of receptivity and sexual isolation in Drosophila melanogaster females

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