| parasite-driven genetic change in a natural population of daphnia. | a substantial body of theory indicates that parasites may mould the population genetic structure of their hosts, but few empirical studies have directly linked parasitism to genetic dynamics. we used molecular markers (allozymes) to investigate genotype frequency changes in a natural population of the crustacean daphnia magna in relation to an epidemic of the bacterial pathogen pasteuria ramosa. the population experienced a severe epidemic during the study period in which parasite prevalence rea ... | 2007 | 17439612 |