Van Leeuwen, Pauline Mathilde Lucile2022-05-052022-05-052022-03-28https://laurentian.scholaris.ca/handle/10219/3878In this PhD study, I investigated two broad classes of drivers of gut microbial communities’ variation in threatened species under conservation breeding programs. Firstly, heritable drivers are potentially not reversible, or if so, over multiple host generations and therefore operate at long-term scales. Second, immediate drivers could induce variation in microbial community composition in a reversible manner and at the individual level of the host. I hypothesized that host genotype and birth location are heritable drivers, and host diet, biology (such as hibernation) and environment (captivity and geography) are short-term immediate drivers.enGut microbial communitiesconservation breeding programsVancouver Island marmotin situ facilitiesex situ facilitiesThesis