Postmating transcriptional changes in reproductive tracts of con- and heterospecifically mated Drosophila mojavensis females.

摘要: In internally fertilizing organisms, mating involves a series of highly coordinated molecular interactions between the sexes that occur within female reproductive tract. species where females mate multiply, traits involved in postcopulatory are expected to evolve rapidly, potentially leading postmating-prezygotic (PMPZ) isolation diverging populations. Here, we investigate postmating transcriptional response lower tract Drosophila mojavensis following copulation with either conspecific or heterospecific (Drosophila arizonae) males at three time points postmating. Relatively few genes (15 total) were differentially regulated mating. Heterospecifically mated exhibited significant perturbations expression majority these genes, and also down-regulated transcription number others, including several mitochondrial function. These striking regulatory differences indicate failed consistent strong PMPZ observed for this cross. We report transfer male accessory-gland protein (Acp) transcripts from during copulation, finding broad implications understanding sexes.