A5077454522- Primate Behavior and Ecology
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Genetic diversity and population structure
- Zoonotic diseases and public health
- Species Distribution and Climate Change
- Animal Vocal Communication and Behavior
- Evolution and Paleontology Studies
- Malaria Research and Control
- Genomics and Phylogenetic Studies
- HIV Research and Treatment
- Bird parasitology and diseases
- Child and Animal Learning Development
- Genetic and phenotypic traits in livestock
- Animal Disease Management and Epidemiology
- Chromosomal and Genetic Variations
- Identification and Quantification in Food
- Genetics, Bioinformatics, and Biomedical Research
- Conservation, Biodiversity, and Resource Management
- Ecology and Vegetation Dynamics Studies
- RNA and protein synthesis mechanisms
- Bat Biology and Ecology Studies
- Human-Animal Interaction Studies
- Viral Infections and Vectors
- Turtle Biology and Conservation
Drexel University
2016-2025
Texas A&M University
2024-2025
National Radiation Protection Agency of Cameroon
2023-2025
International Union for Conservation of Nature
2024
National University of Equatorial Guinea
2015-2023
University at Albany, State University of New York
2010-2016
Albany State University
2010-2015
University of Maryland, College Park
2006-2007
Hunter College
2006
City University of New York
1997-2006
High-coverage sequencing of 79 (wild and captive) individuals representing all six non-human great ape species has identified over 88 million single nucleotide polymorphisms providing insight into genetic variation evolutionary history enabling comparison with human diversity. In an effort to provide insights variation, the authors sequence wild- captive-born from across seven subspecies. Their data analyses shed light on population structure gene flow, inbreeding, inferred dynamics...
The mechanisms that underlie the diversification of tropical animals remain poorly understood, but new approaches combine geo-spatial modeling with spatially explicit genetic data are providing fresh insights on this topic. Data about mammals particularly sparse, and vanishingly few opportunities exist to study endangered large increasingly only in isolated pockets. chimpanzees Cameroon represent a unique opportunity examine promote differentiation because region is home two chimpanzee...
Studies of human mitochondrial (mt) DNA genomes demonstrate that the root phylogenetic tree occurs in Africa. Although 2 mtDNA lineages with an African origin (haplogroups M and N) were progenitors all non-African haplogroups, macrohaplogroup L (including haplogroups L0–L6) is limited to sub-Saharan Several haplogroup occur most frequently eastern Africa (e.g., L0a, L0f, L5, L3g), but some are specific certain ethnic groups, such as L0d L0k previously have been found nearly exclusively among...
Little is known about the history of click-speaking populations in Africa. Prior genetic studies revealed that Hadza eastern Africa are as distantly related to click speakers southern most other African populations. The Sandawe, who currently live within 150 km Hadza, only population whose language has been classified part Khoisan family. Linguists disagree on whether there any detectable relationship between and Sandawe languages. We characterized both mtDNA Y chromosome variation...
The history of the genus Pan is a topic enduring interest. Chimpanzees (Pan troglodytes) are often divided into subspecies, but population structure and genetic chimpanzees across Africa remain unclear. Some genetics studies have led to speculation that, until recently, this species constituted single with ongoing gene flow its range, which resulted in continuous gradient allele frequencies. Chimpanzees, designated here as P. t. ellioti, occupy Gulf Guinea region that spans southern Nigeria...
Abstract Conservation funding is currently limited; cost‐effective conservation solutions are essential. We suggest that the thousands of field stations worldwide can play key roles at frontline biodiversity and have high intrinsic value. assessed stations’ return on investment explored impact COVID‐19. surveyed leaders across tropical regions host primate research; 157 in 56 countries responded. Respondents reported improved habitat quality reduced hunting rates over 80% lower operational...
Significance The X chromosome has a different inheritance pattern from the autosomes, direct interaction and potential conflict with Y chromosome, fewer copies than autosomes. Natural selection may, therefore, act differently on chromosome. We analyze polymorphism patterns in 10 great ape species using 87 high-coverage whole genomes. find that contains megabase-sized regions are almost without variation most species. No such found suggest independent very strong selective sweeps only...
Humans and pangolins have a long intertwined history in Africa Asia, with the species having been used for subsistence, livelihood, medicinal, cultural purposes. Populations of Asian severely declined, intercontinental trafficking African pangolin scales to Asia has emerged last decade. Coastal countries Gulf Guinea highlighted as hotspots illegal trade, 2017, international commercial trade was banned. We characterise coastal around using data across three tiers. First, we investigated which...
The isolation of phylogenetically distinct primate immunodeficiency viruses from at least seven wild-born, captive chimpanzees indicates that closely related to HIV-1 may be endemic in some wild chimpanzee populations. search for the population or populations harbouring these is therefore on. This paper attempts answer question whether not such are likely exist all, and, if so, where they found. We summarize what known about gene flow chimpanzees, both between major phylogeographical...
Abstract Background While wild chimpanzees are experiencing drastic population declines, their numbers at African rescue and rehabilitation projects growing rapidly. Chimpanzees follow complex routes to these refuges; geographic origins often unclear. Identifying areas where hunting occurs can help law enforcement authorities focus scarce resources for wildlife protection planning. Efficiently focusing is particularly important in Cameroon because this country a key transportation waypoint...
The Nigeria-Cameroon chimpanzee (Pan troglodytes ellioti) is found in the Gulf of Guinea biodiversity hotspot located western equatorial Africa. This subspecies threatened by habitat fragmentation due to logging and agricultural development, hunting for bushmeat trade, possibly climate change. Although P. t. ellioti appears be geographically separated from neighboring central (P. troglodytes) Sanaga River, recent population genetics studies chimpanzees across this region suggest that...
Abstract Ebola virus disease ( EVD ) is a threat to human health and the survival of African great apes. The has led major population declines in chimpanzees Pan troglodytes gorillas Gorilla gorilla , infected apes play an important role as sources outbreaks. posed by raises question whether vaccination wild effective strategy reduce occurrence impact this disease. We review current knowledge about document link between outbreaks humans, mainly via bushmeat consumption. discuss need for...
Bushmeat hunting is extensive in west and central Africa as both a means for subsistence commercial gain. Commercial represents one of the primary threats to wildlife region, confounding factors have made it challenging examine how external influence bushmeat trade. Bioko Island, Equatorial Guinea small island with large tracts intact forest that support sizeable populations commercially valuable vertebrates, especially endemic primates. The also has low human population experienced dramatic...
Human and simian immunodeficiency viruses (HIV/SIVs) use CD4 as the primary receptor to enter target cells. Here, we show that chimpanzee is highly polymorphic, with nine coding variants present in wild populations, this diversity interferes SIV envelope (Env)-CD4 interactions. Testing replication fitness of SIVcpz strains CD4+ T cells from captive chimpanzees, found certain were unable infect hosts. These differences recapitulated transfection assays, which revealed a strong association...
ABSTRACT Chimpanzees exhibit considerable inter‐ and intra‐community variation in cognitively complex tool use behaviors, often attributed to social, genetic, environmental factors. Termite fishing is a well‐documented chimpanzee tool‐using behavior that has been the subject of comparative research exploring behavioral between communities. However, termite Nigeria‐Cameroon ( Pan troglodytes ellioti ) historically underrepresented due lack habituated populations. In this study, we used...
Chimpanzees (Pan troglodytes) can be divided into four subspecies. Substantial phylogenetic evidence suggests that these subspecies grouped two distinct lineages: a western African group includes P. t. verus and ellioti central/eastern troglodytes schweinfurthii. The geographic division of lineages occurs in Cameroon, where the rages appear to converge at Sanaga River. Remarkably, few population genetic studies have included wild chimpanzees from this region.We analyzed microsatellite...
Through the rise of global commodity chains, consumer demand in China and USA has given to extraction natural resources Congo Basin. The Chinese market for high‐valued animal products such as elephant ivory pangolin scales encouraged poaching, exploitation trafficking these goods Africa. other African commodities, however, remains less well known. Using data across a 15‐year period (2001–2015), we analysed relationship between timber imports tree‐cover loss Tree‐cover was measured via remote...