Amanda moehring thesis
we review the literature on female mate choice in the most widely used model system for studies of species isolation. Drosophila due to the extensive genetic and molecular tools this species offers, as well as the availability of species that can be hybridized in the laboratory. . Simulans rejection when paired with. Simulans females very rarely occurs 133. A females ability to identify conspecific song over heterospecifics can lead to behavioral isolation. Melanogaster does not produce fertile offspring with any of its sibling species 2, 3, 6, 7, 59,. Persimilis population, and aids in the reinforced behavioral isolation between these populations, but not in the basal behavioral isolation. Each species of Drosophila has cuticular hydrocarbons (CHCs) on the outer surface of their body that act as a protective barrier to desiccation and most likely evolved as an adaptation to dry climates. Simulans being the less choosy of the two courted females. Yakuba diverged approximately 400,000 years ago 126.
Recent Publications, leVasseur-Viens,.,. This was interpreted as a linked increase in intra- and interspecific receptivity, giving support to the notion that both types of mating behavior have the same genetic underpinning. While the contribution of natural selection has been wellsupported, the impact of genetic drift has been debated within the literature. Genes for Interspecific Female Mating Behavior Mating behaviors in Drosophila usually have a genetic basis (e.g., of an exception, see 39 ). Melanogaster Drosophila melanogaster and. Recently, the right arm of the third chromosome (3R) was mapped using deficiency mapping, revealing five regions (all in areas of low recombination) that contribute to the rejection behavior. Simulans males, revealed no isolation, and therefore locating the genes for behavioral isolation.
More unexpected results came from the female mating behavior of island populations. Although we do find this relationship in the North American and Bogota strains. Pseudoobscura from sympatric regions hybridize less with male.