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 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
Interim Chair of the Department of Evolutionary Anthropology
·
2024 - Present
Evolutionary Anthropology,
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 Publications
Why Do Some Lineages Radiate While Others Do Not? Perspectives for Future Research on Adaptive Radiations.
Journal Article Cold Spring Harbor perspectives in biology · February 2025 Understanding the processes that drive phenotypic diversification and underpin speciation is key to elucidating how biodiversity has evolved. Although these processes have been studied across a wide array of clades, adaptive radiations (ARs), which are sys ... Full text CiteUnprecedented female mutation bias in the aye-aye, a highly unusual lemur from Madagascar.
Journal Article PLoS biology · February 2025 Every mammal studied to date has been found to have a male mutation bias: male parents transmit more de novo mutations to offspring than female parents, contributing increasingly more mutations with age. Although male-biased mutation has been studied for m ... Full text CiteThe gut microbiome of Madagascar's lemurs from forest fragments in the central highlands.
Journal Article Primates; journal of primatology · February 2025 The gut microbiome is now understood to play essential roles in host nutrition and health and has become a dominant research focus in primatology. Over the past decade, research has clarified the evolutionary traits that govern gut microbiome structure acr ... Full text CiteRecent Grants
Doctoral 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 - 2026Behavior and Physiology in Aging
Inst. Training Prgm or CMEMentor · Awarded by National Institute on Aging · 2015 - 2025View All Grants
Education, Training & Certifications
Duke University ·
1992
Ph.D.