Stephan Ntie

Stephan Ntie
Universite des Sciences et Techniques de Masuku | USTM · Biologie

PhD

About

57
Publications
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203
Citations
Introduction
Stephan Ntie currently works at the Biologie, Universite des Sciences et Techniques de Masuku. Their current project is 'Mandrill Evolutionary Ecology'.
Skills and Expertise

Publications

Publications (57)
Article
Full-text available
Mandrills (Mandrillus sphinx) are enigmatic primates endemic to central Africa and are threatened by habitat loss and hunting. However, effective management of this species is limited by insufficient information about their numbers in the wild, since population size can impact viability and genetic diversity. Here, we used for the first time a non-...
Article
Full-text available
Spatially explicit information on forest management at a global scale is critical for understanding the status of forests, for planning sustainable forest management and restoration, and conservation activities. Here, we produce the first reference data set and a prototype of a globally consistent forest management map with high spatial detail on t...
Article
Background The occurrence of gastrointestinal parasites in the sun-tailed monkey (Allochrocebus solatus) at the CIRMF primatology center is unknown. We, therefore, assessed the presence and richness (number of different parasite taxa) of gastrointestinal parasites in a semi-free-ranging colony of A. solatus. Methods A total of 46 fecal samples wer...
Article
Full-text available
We are an international group of biological scientists, conservationists, and environmentalists who have been closely following the plight and conservation of pangolins over a number of years. Pangolins comprise the mammalian Order Pholidota, which contains eight living species found in diverse habitats in Africa (4 species) and Asia (4 species), w...
Article
Full-text available
Background and aim: Gastrointestinal parasites identified in the wild can negatively affect host fitness, lower performance, and growth. On the other side, sympatric mammals that share habitat and resources may also cross-transmit parasites, which are often zoonotic and can contribute to morbidity and mortality. This study aimed to characterize th...
Article
Lepidopterans are an important component of central African biodiversity. Indeed, they play an important role as plant pollinators, food source, bio-indicators, and even pests for local crops. However, almost nothing is known about these moths in central Africa, while they are being increasingly threatened by significant landscape changes due mainl...
Article
Full-text available
Central African duikers and elephants play a major role in seed dissemination, thus regenerating and structuring the forest. However, this forest mammal ecology is still poorly known, especially their diet. One possible explanation might be to gather field data and to experiment in a limited constrained environment. So, this study aimed to use a si...
Article
Full-text available
The duiker community in Central African rainforests includes a diversity of species that can coexist in the same area. The study of their activity patterns is needed to better understand habitat use or association between the species. Using camera traps, we studied the temporal activity patterns, and quantified for the first time the temporal overl...
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Full-text available
en Species identification methods are needed for small mammals. Herein, we present a simple and efficient identification key based on the hair morphology of Central African rodents (Rodentia) and shrews (Soricomorpha). A total of 1,320 museum hair samples from 51 species were analysed with an optical light microscope. One‐third (31.37%) of these sa...
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Tropical Africa is home to an astonishing biodiversity occurring in a variety of ecosystems. Past climatic change and geological events have impacted the evolution and diversification of this biodiversity. During the last two decades, around 90 dated molecular phylogenies of different clades across animals and plants have been published leading to...
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Predicting species' capacity to respond to climate change is an essential first step in developing effective conservation strategies. However, conservation prioritization schemes rarely take evolutionary potential into account. Ecotones provide important opportunities for diversifying selection and may thus constitute reservoirs of standing variati...
Article
Full-text available
Malaria parasites infect a wide range of vertebrate hosts, such as reptiles, birds and mammals (i.e., primates, ungulates, bats, and rodents). Four Plasmodium species and their subspecies infect African Muridae. Since their discoveries in the 1940s, these rodent Plasmodium species have served as biological models to explore many aspects of the biol...
Article
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Background: This study aims to assess the role that Pleistocene refugia, rivers and local habitat conditions may have played in the evolutionary diversification of three central African duiker species (Cephalophus dorsalis, C. callipygus and Philantomba monticola). Genetic data from geo-referenced feces were collected from a wide range of sites ac...
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Full-text available
The tropical forests of the Congo Basin and Gulf of Guinea harbor some of the greatest terrestrial and aquatic biological diversity in the world. However, our knowledge of the rich biological diversity of this region and the evolutionary processes that have shaped it remains limited, as is our understanding of the capacity for species to adapt or o...
Article
Full-text available
A five-day international workshop was recently convened at the Universite´ des Sciences et Techniques de Masuku in Gabon to enhance international collaboration among Central African, US and European scientists, conservation professionals and policy makers. The overall aims of the workshop were to: (1) discuss emerging priorities in biodiversity and...
Article
Full-text available
African duikers in the subfamily Cephalophinae (genera Cephalophus, Philantomba and Sylvicapra) constitute an important target for DNA barcoding efforts because of their importance to the bushmeat trade and protection under the Convention for International Trade in Endangered Species (CITES). Duikers also make a challenging test case of barcoding m...
Article
The present study set out to evaluate cross-species amplification of 34 bovid microsatellites in six central African duikers: Cephalophus callipygus, C. monticola, C. silvicultor, C. nigrifrons, C. dorsalis and C. leucogaster. Of these loci, 16 amplified across all species and appeared polymorphic when initially tested in polyacrylamide gel electro...
Article
Small to medium-sized central African forest artiodactyls constitute a diverse yet heavily hunted group composed primarily of species within the genera Cephalophus, Neotragus, Tragelaphus and Hyemoschus. Of these genera, Cephalophus is the richest with as many as seven sympatric species known to occur in central African forests. However, differenti...
Article
The present study compares the effect of three storage media (silica, RNAlater®, ethanol) and time to extraction (1 week, 1 month and 3 months) on mitochondrial and nuclear marker amplification success in faecal DNA extracts from a sympatric community of small to medium-sized Central African forest ungulates (genera Cephalophus, Tragelaphus, Hyemos...
Conference Paper
The main aim of this study is to develop a molecular diagnostic for the identification of different ungulate species from field-collected fecal pellets. Central African forest ungulates constitute a diverse yet heavily hunted group composed primarily of species within the genera Cephalophus, Tragelaphus, Neotragus and Hyemoschus. Of these, the genu...
Article
The present study sets out to assess patterns of evolutionary diversification in central African duikers (subfamily Cephalophinae). The sampling strategy consisted of collecting geo-referenced duiker feces across 43 sites and seven countries. However, several challenges related to the use of non-invasive samples needed to be addressed prior to larg...

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Projects

Projects (2)
Project
Long term (since 1996) ecological study of a wild mandrill horde in Lope National Park. Includes work on ranging, diet, genetic structuring, reproduction, life-history traits, disease, habitat use and social organisation.