Abstract # 8047 Poster # 35:

Scheduled for Saturday, August 26, 2017 06:00 PM-08:00 PM: (National Ballroom AB) Poster Presentation


DETERMINANTS OF THE ADULT MICROBIOME: KINSHIP, DISPERSAL, AND SOCIAL RELATIONSHIPS

L. O. Diakiw1, A. Raulo2, A. Lane3, A. Baden4, K. Amato5 and S. Tecot1
1University of Arizona, Department of Anthropology, 1009 E South Campus Dr, Tucson, AZ 85721, USA, 2Oxford University, 3University of Washington, 4Hunter College, City University of New York, 5Northwestern University
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     Primates who disperse from their natal group may shape their adult stable gut microbiome through physical contact, and shared environments with their new group members. However, it is possible that individuals retain the dominant microbiome composition that they developed as an infant in their natal group even after joining their new group due to a combination of genetics and exposure to their natal group environment. We studied Eulemur rubriventer (red-bellied lemur) who live in family groups. We tested whether indivuiduals now living in different social groups as adults overlap in microbe composition, and if areas of overlap are distinct compared with unrelated individuals. We also tested whether the gut microbiomes of co-residents (dispersed adult group-mates) would be more similar than that of individuals living in different groups. Using census and genetic data, we determined the social group membership and relatedness of 15 individuals in Ranomafana National Park, Madagascar. Quantitative real-time PCR and Microbial 16S ribosomal RNA gene sequencing indicated that E. rubriventer kinship accounted for just 2.4% of variability in gut microbiome diversity. Our findings indicate that host adult social group explained 25% of the variation in composition of E. rubriventer microbiomes. Additional research incorporating an increased sample size to include additional kin dyads is necessary to fully understand the influence of genetic kinship and early life colonization on the GI microbiome.