Influence of oyster genetic background on levels of human-pathogenic Vibrio spp.

Human-pathogenic Vibrio bacteria are common inhabitants of oyster tissues, but our understanding factors driving the wide range concentrations found in individual oysters is extremely limited. We examined influence sex and parasitism light their profound effects on tissues against a backdrop eastern oysters, Crassostrea virginica, from two diploid triploid aquacultured lines. This allowed us to examine not only effect ploidy also genetics, factor never investigated with regard human-pathogenic species. measured levels total vulnificus (vvhA), (tlh) pathogenic (tdh+, trh+) V. parahaemolyticus, each oyster, analyzed data through generalized linear mixed-effects models. A key outcome these analyses was consistent inclusion line as predictor variable across targets. potential Perkinsus marinus infections and/or suggested, although combination variables varied target. study suggests that genetic background should be further investigated, dynamics spp. likely driven by multiple, interacting factors, some which may under host control.