The prevalence and persistence of sigma virus, a biparentally transmitted parasite of Drosophila melanogaster.

How do vertically transmitted parasites persist?Drosophila melanogaster (host) and sigma virus (parasite).Peach stands in northern Georgia, USA, on a transect between Macon and Athens.We estimated prevalence in the field. We also estimated male and female transmission in the laboratory, using field-collected animals as parents. We further quantified patrilineal (father to son) transmission in the laboratory, and estimated cost of infection...