Overview
My work integrates field inventory activities with molecular phylogenetic techniques and geospatial analysis to investigate Madagascar, an area of the world that is biologically complex, poorly understood, and urgently threatened. Madagascar has been designated as one of the most critical geographic priorities for conservation action, retaining less than 10% of the natural habitats that existed before human colonization. It is critical that information be obtained as quickly as possible to document the biota that occurs in the remaining and highly threatened forested areas of western Madagascar, to gain an understanding of the evolutionary processes and associated distributional patterns that have shaped this diversity, and to use this information to help set conservation priorities. Phylogenetic and biogeographic analysis of Malagasy vertebrates, each with unique life-history and dispersal characteristics, are conducted to identify areas of high endemism potentially associated with underlying geological features, and also to test for the role that geographic features have played in generating patterns of vertebrate diversity and distribution. My lab also has a significant focus on capacity-building through the education and training of both American and Malagasy students. Research opportunities for American graduate students are enhanced by the formation of Malagasy/American partnerships.
Current Duke Appointments & Affiliations
Braxton Craven Distinguished Professor of Evolutionary Biology
·
2017 - Present
Biology,
Trinity College of Arts & Sciences
Professor of Biology
·
2005 - Present
Biology,
Trinity College of Arts & Sciences
Professor of Evolutionary Anthropology
·
2008 - Present
Evolutionary Anthropology,
Trinity College of Arts & Sciences
Faculty Research Scholar of DuPRI's Center for Population Health & Aging
·
2011 - Present
Center for Population Health & Aging,
Duke Population Research Institute
Faculty Network Member of the Duke Institute for Brain Sciences
·
2011 - Present
Duke Institute for Brain Sciences,
University Institutes and Centers
Associate of the Duke Initiative for Science & Society
·
2017 - Present
Duke Science & Society,
University Initiatives & Academic Support Units
Recent Scholarly Works
Divergent poxvirus identified in a non-native black rat from Madagascar.
Journal article Virology · June 2026 Non-native rodents serve as bridges between anthropogenic and natural landscapes. They have expanded across the planet alongside humans while bringing competition, predation, and pathogens, such as poxviruses, to naïve ecosystems. Although rodents serve as ... Full text CiteRapid centromere turnover and the adaptive radiation of lemurs.
Journal article bioRxiv · May 19, 2026 Centromeres represent essential chromosomal structures required for faithful chromosome segregation during cell division but are paradoxically hypermutable, leading to centromere drive and reproductive isolation in closely related species. Using long-read ... Full text Link to item CiteMammal-infecting DNA viruses identified in lemurs and rodents in Madagascar mirror the evolutionary history of their hosts.
Journal article Microbial genomics · May 2026 Given that some DNA viruses have been found to exhibit virus-host co-evolution and establish lifelong infection, mammals with unique evolutionary histories in island ecosystems likely host exceptionally diverse viruses. Madagascar is inhabited by endemic n ... Full text CiteRecent Grants
Genetics and Genomics Training Grant
Inst. Training Prgm or CMEMentor · Awarded by National Institutes of Health · 2026 - 2031Doctoral Dissertation Research: The Evolutionary Pressures of Forest Fires and Dietary Niche on Wild Primates
Inst. Training Prgm or CMEPrincipal Investigator · Awarded by National Science Foundation · 2025 - 2027NSFDEB-NERC: Integrating computational, phenotypic, and population-genomic approaches to reveal processes of cryptic speciation and gene flow in Madagascar's mouse lemurs
ResearchPrincipal Investigator · Awarded by National Science Foundation · 2022 - 2026View All Grants
Education
Duke University ·
1992
Ph.D.