Binding sites of Drosophila melanogaster sex peptide pheromones

A mutation with major effects on Drosophila melanogaster sex pheromones.

Sex pheromones are intraspecific chemical signals that are crucial for mate attraction and discrimination. In Drosophila melanogaster, the predominant hydrocarbons on the cuticle of mature female and male flies are radically different and tend to stimulate or inhibit male courtship, respectively. This sexual difference depends largely upon the number of double bonds (one in males and two in fem...

Sex Peptide Causes Mating Costs in Female Drosophila melanogaster

Conflicts between females and males over reproductive decisions are common . In Drosophila, as in many other organisms, there is often a conflict over how often to mate. The mating frequency that maximizes male reproductive success is higher than that which maximizes female reproductive success . In addition, frequent mating reduces female lifespan and reproductive success , a cost that is medi...

Sex peptide and the sperm effect in Drosophila melanogaster.

O n mating, Drosophila females undergo dramatic alterations in their reproductive physiology and behavior (Fig. 1) (1). Egg production and egg laying are significantly increased, and the female’s propensity to remate is drastically reduced. These changes in the female have been shown to be initially induced by seminal fluids transferred from the male to the female during mating and to persist b...

Interaction of dopamine, female pheromones, locomotion and sex behavior in Drosophila melanogaster.

The regulation of female hydrocarbons and courtship behavior by dopamine and their relationship with locomotion, were investigated in Drosophila melanogaster. Ddc mutants and wild-type female flies treated with tyrosine hydroxylase inhibitors (alpha-methyltyrosine or 3-iodotyrosine) had fewer diene hydrocarbons (female pheromones) and there was a total (Ddc), partial (alpha-methyltyrosine) or n...

1 A mutation with major effects on Drosophila melanogaster sex pheromones