Sexual behaviour: Secrets and flies

Sexual behaviour: Secrets and flies

Recent studies of Drosophila courtship mutants provide a molecular foundation for sexual orientation and behaviour.

Layered sexual selection: a comparative analysis of sexual behaviour within an assemblage of piophilid flies

Although many theoretical and empirical studies have addressed the dynamics of sexual selection, little is known about the evolution of multiple sexual-selection mechanisms within the same system. I performed a qualitative comparative study of sexual behaviours in seven sympatric species of piophilid flies to identify and compare the apparent mechanisms of sexual selection operating in each sys...

Sexual conflict and reproductive isolation in flies.

Sexual conflict is predicted to generate more rapid reproductive isolation between larger populations. While there is some empirical support for this, the data are inconsistent and, additionally, there has been criticism of some of the evidence. Here we reanalyse two experimental-evolution datasets using an isolation index widely applied in the speciation literature. We find evidence for reprod...

Genomics reveals sexual secrets of Aspergillus.

Hormones and sexual behaviour.

Despite new technological advances and improved assay methods, the relationship between hormones and human sexual behavior is still poorly understood. Sex drive and responsiveness, gender identification, and sexual preference are all influenced by hormones. Endocrine studies of impotent men have produced conflicting results. Exogenous androgens seem to produce some results with impotent men....