Abstract # 101:

Scheduled for Saturday, August 26, 2017 02:15 PM-02:30 PM: (National Ballroom Salon B) Oral Presentation


A. N. Mancini1,2, A. Chandrashekar3 and A. L. Baden1,2,3
1The Graduate Center of The City University of New York, Department of Anthropology, 365 Fifth Ave. , New York, NY 10016, USA, 2New York Consortium in Evolutionary Primatology , 3Hunter College of The City University of New York, New York, NY 10065
     Habitat loss and fragmentation are among the greatest extinction threats to species worldwide. Large, continuous tracts of forest- such as those found in national parks- are considered crucial for protecting biodiversity and maintaining population cohesion and genetic variability across taxa. We sought to determine the efficacy with which a national park maintained genetic structure and diversity within the Critically Endangered black-and-white ruffed lemur (Varecia variegata). To achieve this, we collected 97 fecal samples from adult V. variegata at four locations within Ranomafana National Park (RNP) and identified 38 individuals using a suite of ten microsatellite markers. These data was used to evaluate genetic diversity and population genetic structure, as well as to test for evidence of population bottleneck signal. Both a Bayesian cluster analysis and a multivariate clustering method provided evidence for one genetic population within RNP. Mean number of alleles per locus was 4.00, and observed and expected heterozygosity were 0.628 and 0.624, respectively. These levels of genetic variability are similar to a previous study performed within the park, albeit lower than in several other lemur taxa. Additionally, evidence for a recent population bottleneck was found under all three mutation models assessed. Together, these results suggest that RNP has been successful in maintaining gene flow in V. variegata, although this population may have suffered a recent decline in population size and genetic diversity.