Laurent Chirio

Laurent Chirio
Riyadh International French School · Biology ang Geology

Science Teacher with Aggregation and Pedagogic counselor

About

154
Publications
65,287
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1,561
Citations
Additional affiliations
August 1987 - present
Muséum National d'Histoire Naturelle
Position
  • Free Searcher
September 1984 - August 1995
Paul Valéry University, Montpellier 3
Position
  • PhD Student

Publications

Publications (154)
Article
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We present various predation records based on museum-preserved snakes from southeastern Republic of Guinea, West Africa: Aparallactus niger (Atractaspididae) on an earthworm (Oligochaeta); Crotaphopeltis hotamboeia (Colubridae) on Sclerophrys sp. (Anura; Bufonidae); Grayia smithii (Colubridae) and Natriciteres variegata (Natricidae) on Arthroleptis...
Article
Our knowledge of the conservation status of reptiles, the most diverse class of terrestrial vertebrates, has improved dramatically over the past decade, but still lags behind that of the other tetrapod groups. Here, we conduct the first comprehensive evaluation (~92% of the world's ~1714 described species) of the conservation 1 Joint senior authors...
Article
Face-to-face interviews with local populations are often used to determine the distribution and population trends of elusive threatened species. Although interviewee responses may suffer from some bias, historical trends in the status of a species can be investigated from age-structured questionnaires. In this paper, we tested this idea by analysin...
Article
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We describe the skull of Ragechelus sahelica, n. gen., n. sp., a pleurodiran Pelomedusoides turtle, the oldest skull known of the Erymnochelyinae. The specimen comes from the surroundings of Indamane village, from a littoral late Maastrichtian level of the Iullemeden sedimentary basin (southwestern Niger, Africa). It is compared on the one hand to...
Article
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We present new Gabonese locality records, ecological and morphological data and unpublished material for Pelusios gabonensis (Pelomedusidae), Kinixys erosa (Testudinidae), Hemidactylus mabouia (Gekkonidae), Lepidothyris striatus, Trachylepis affinis (Scincidae), Crotaphopeltis hotamboeia, Dipsadoboa underwoodi and D. viridis (Colubridae), Dendroasp...
Article
Aim: Understanding the mechanisms determining species richness is a primary goal of biogeography. Richness patterns of subgroups within a taxon are usually assumed to be driven by similar processes. However, if richness of distinct ecological strategies respond differently to the same processes, inferences made for an entire taxon may be misleading...
Article
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To better understand the habitat preferences of the African spurred tortoise (Centrochelys sulcata), we tested possible associations between their distribution and land use, vegetation cover, the presence of roads, human settlements, and rainfall patterns, all of which affect the distributions of other tortoise species. African spurred tortoise dis...
Article
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An update is provided of current knowledge of the herpetofauna and batrachofauna recorded from caves in Gabon, western Equatorial Africa. No systematic field survey of reptiles and amphibians in Gabonese cave environments has yet been made, and data are available for only 19 (complexes of) caves. This compilation of published records and new observ...
Article
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The agamid Pseudotrapelus lizards inhabit the mountainous areas of the Arabian Peninsula and eastern North Africa. Currently six Pseudotrapelus species are recognised, though diagnostic morphological characters are still lacking, creating great difficulty in describing new species. Recently, two specimens of Pseudotrapelus were collected from the v...
Article
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We describe a new stiletto snake, Atractaspis , from western Liberia and southeastern Guinea. The new species shares with morphologically similar western African Atractaspis species, A.reticulata and A.corpulenta , the fusion of the 2 nd infralabial with the inframaxillary. From A.corpulenta the new species differs by a more slender body (276–288 v...
Article
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Aim: Variation in body size across animal species underlies most ecological and evolutionary processes shaping local‐ and large‐scale patterns of biodiversity. For well over a century, climatic factors have been regarded as primary sources of natural selection on animal body size, and hypotheses such as Bergmann's rule (the increase of body size wi...
Article
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No field studies have been conducted characterizing the habitat characteristics and eventual spatial resource partitioning between softshell turtles (family Trionychidae) in West and Central Africa. Here, we analyze the macrohabitat, microhabitat (along four variables), and apparent population abundance of Nile Soft-shelled Terrapin (Trionyx triung...
Article
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During a survey of the fishes in the region of the Wonga-Wongué Presidential Reserve, 14 new populations of the subgenus Chromaphyosemion Myers, 1924 were found. These observations extend the previously known distribution range of the subgenus 120 kilometres southward. None of these populations could be related to any described species. Based on th...
Chapter
Fishes of the Ogooué River Delta
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We present new Gabonese locality records, ecological and morphological data or unpublished material for Kinixys erosa (Testudinidae), Osteolaemus tetraspis (Crocodylidae), Agama agama and A. lebretoni (Agamidae), Rhampholeon spectrum, Trioceros cristatus and T. owenii (Chamaeleonidae), Hemidactylus mabouia (Gekkonidae), Holaspis guentheri (Lacertid...
Article
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Cobras are among the most widely known venomous snakes, and yet their taxonomy remains incompletely understood, particularly in Africa. Here, we use a combination of mitochondrial and nuclear gene sequences and morphological data to diagnose species limits within the African forest cobra, Naja (Boulengerina) melanoleuca. Mitochondrial DNA sequences...
Article
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In this paper, the results of the first density investigations (via DISTANCE methodology on line transect surveys) for the threatened African spurred tortoise Centrochelys sulcata from West African Sahel (Niger and Burkina Faso) are reported. Spurred tortoises were encountered in 51.8% of Burkina Faso transects (n = 27) and in 60.7% of Niger transe...
Article
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We present new Gabonese locality records, ecological and morphological data or unpublished material for Pelusios gabonensis (Pelomedusidae), Kinixys erosa (Testudinidae), Cycloderma aubryi (Trionychidae), Osteolaemus tetraspis (Crocodylidae), Hemidactylus richardsonii (Gekkonidae), Trachylepis affinis and T. maculilabris (Scincidae), Varanus ornatu...
Article
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Une mission d’exploration naturaliste pluridisciplinaire a été organisée par la Fondation Biotope du 26 février au 07 mars 2017 dans le massif du Koumouna-Bouali, au sud-ouest de la ville de Fougamou (Gabon, Province de la Ngounié). L’objectif était d’évaluer l’accessibilité du site et de récolter des données naturalistes préliminaires (principalem...
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p>In the version of this Article originally published, grant no. 2015/20215-7 for C.N. was omitted from the Acknowledgements section. This has now been corrected in all versions of the Article.</p
Article
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We present new Gabonese locality records, ecological and morphological data or unpublished museum material for Mecistops cataphractus (Crocodylidae), Chamaeleo cristatus and C. owenii (Chamaeleonidae), Hemidactylus fasciatus and H. muriceus (Gekkonidae), Feylinia currori, Trachylepis albilabris (Scincidae), Calabaria reinhardtii (Boidae), Grayia or...
Article
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Climate change related risks and impacts on ectotherms will be mediated by habitats and their influence on local thermal environments. While many studies have documented morphological and genetic aspects of niche divergence across habitats, few have examined thermal performance across such gradients and directly linked this variation to contemporar...
Technical Report
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Cycloderma aubryi inhabits a large range with little to moderate habitat degradation, but is exploited throughout its range for local consumption; this exploitation level is intensive enough to have led to documented declines at least locally, and possibly across much of its range. With an estimated generation time of 20 years, past declines and an...
Article
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Aim: Small geographic ranges make species especially prone to extinction from anthropogenic disturbances or natural stochastic events. We assemble and analyse a comprehensive dataset of all the world's lizard species and identify the species with the smallest ranges—those known only from their type localities. We compare them to wide-ranging specie...
Article
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The distributions of amphibians, birds and mammals have underpinned global and local conservation priorities, and have been fundamental to our understanding of the determinants of global biodiversity. In contrast, the global distributions of reptiles, representing a third of terrestrial vertebrate diversity, have been unavailable. This prevented th...
Article
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In this Article originally published, owing to a technical error, the author ‘Laurent Chirio’ was mistakenly designated as a corresponding author in the HTML version, the PDF was correct. This error has now been corrected in the HTML version. Further, in Supplementary Table 3, the authors misspelt the surname of ‘Danny Meirte’; this file has now be...
Article
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The African Spurred Tortoise (Centrochelys sulcata), the second largest tortoise species in the world, is threatened with extinction because of a variety of threats, including habitat loss. Because details of habitat use for this species have not been published for wild populations of this species, we conducted this study to qualify and quantify ha...
Article
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We present new Gabonese locality records for Gerrhosaurus nigrolineatus (Gerrhosauridae), Trachylepis maculilabris (Scincidae), Varanus ornatus (Varanidae), Calabaria reinhardtii (Boidae), Dipsadoboa viridis, Toxicodryas blandingii (Colubridae), Naja melanoleuca and N. nigricollis (Elapidae), Python sebae (Pythonidae), Atheris squamigera (orange mo...
Article
Full-text available
Une mission naturaliste pluridisciplinaire a été organisée par la Fondation Biotope pour la biodiversité du 26 février au 07 mars 2017 dans le massif du Koumouna-Bouali, au sud-ouest de la ville de Fougamou (Gabon, Province de la Ngounié). L’objectif était d’évaluer l’accessibilité du site et de récolter des données naturalistes préliminaires (Amph...
Article
We report the rediscovery of the skink Trachylepis keroanensis (Chabanaud, 1921) 90 years after its description. For the first time pictures of live specimens are shown and the known, now extended, distribution is presented. The clear morphological differences (body shape, colouration and most notably ratio tail length to body length) towards Trach...
Article
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We present new Gabonese locality records for Kinixys erosa (Testudinidae), Mecistops cataphractus, Osteolaemus tetraspis (Crocodylidae), Hemidactylus fasciatus (Gekkonidae), Feylinia grandisquamis (Scincidae), Varanus ornatus (Varanidae), Calabaria reinhardtii (Boidae), Hapsidophrys smaragdinus, Rhamnophis aethiopissa aethiopissa and Toxicodryas pu...
Article
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We present new Gabonese locality records, ecological data or unpublished museum material for Crocodylus niloticus (Crocodylidae), Trionyx triunguis (Trionychidae), Agama lebretoni (Agamidae), Hemidactylus fasciatus and H. mabouia (Gekkonidae), Gastropholis echinata (Lacertidae), Trachylepis albilabris (Scincidae), Afrotyphlops angolensis (Typhlopid...
Article
The African spurred tortoise (Centrochelys sulcata) is the second largest terrestrial turtle in the world, with a scattered distribution across the Sahel, in West Africa. This species is seriously threatened and declining consistently throughout the range, but little is kown on the causes of its decline. It has been hypothesized that this tortoise...
Article
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The savannah and tropical forest biomes of Africa have a long history of expansion and contraction, and the recent and rapid spread of dry savannah habitats has influenced the spatial and temporal diversification of vertebrate taxa across this region. We used a combination of species tree and phylogeographic methods to describe the spatio-temporal...
Article
Aim To map and assess the richness patterns of reptiles (and included groups: amphisbaenians, crocodiles, lizards, snakes and turtles) in Africa, quantify the overlap in species richness of reptiles (and included groups) with the other terrestrial vertebrate classes, investigate the environmental correlates underlying these patterns, and evaluate t...
Article
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We report the first observation of Lygodactylus conraui (Gekkonidae) in Gabon. We present new Gabonese locality records for Kinixys erosa (Testudinidae), Agama agama and A. lebretoni (Agamidae), Trachylepis albilabris (Scincidae), Chamaeleo cristatus and C. owenii (Chamaeleonidae), Dasypeltis fasciata, Hapsidophrys smaragdinus, Rhamnophis a. aethio...
Chapter
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The West African Mud Turtle, Pelusios castaneus (Family Pelomedusidae), is an aquatic turtle of moderate size (carapace length to ca. 250–285 mm) indigenous primarily to savannah environments, but widely tolerant in terms of habitat requirements, and also able to penetrate into some forest and mangrove zones. It has rather variable coloration, but...
Article
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The list of the non-avian reptiles occupying the summits above 1,400 m elevation of Mount Oku and the Bamenda Highlands in Cameroon comprise 50 species (one tortoise, 18 lizards, and 31 snakes) belonging to 12 families and 29 genera. This assemblage has a high biogeographic interest because it harbors species with a large altitudinal spectrum and s...
Article
AimAlthough most reptiles are oviparous, viviparity is a common mode of reproduction in squamates and has evolved multiple times in different lineages. We test two prevailing hypotheses regarding the biogeography of reptile reproductive modes to evaluate the selective forces driving the evolution of viviparity in snakes. The cold climate hypothesis...
Research
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Curriculum vitae for researche and teaching
Research
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Inventaire herpétologique de la région de Campo-Ma'an (2000)
Research
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Results of 12 days fielwork on reptiles in Pendjari National Park (Benin)
Research
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Etude herpétologique de la région de Ngotto-Bambio (RCA)
Article
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Summary – Rectifications on type series and new data about the African geckos Hemidactylus kundaensis Chirio & Trape, 2012 and Tarentola pastoria Trape, Baldé & Ineich, 2012 deposited at the “Muséum national d’Histoire naturelle”. During the deposition of the five specimens of the type series of the African gecko Hemidactylus kundaensis Chirio & Tr...
Article
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Lors du dépôt des cinq spécimens de la série type du gecko africain Hemidactylus kundaensis Chirio & Trape, 2012 provenant de Guinée dans les collections du Muséum national d'Histoire naturelle en mars 2013, nous avons constaté certaines discordances entre les données indiquées dans la description originale de l'espèce et les informations accompagn...
Article
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Abstract. A recent field trip to Niger allowed herpetological exploration of the Termit Massif (southeastern Tenere Desert), an area rarely visited by herpetologists. A total of 13 species were collected or observed, some typical of Saharan habitats and others related to more mesic Sahelian habitats. The later species are mostly restricted to tempo...
Article
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Aim Temperature influences most components of animal ecology and life history – but what kind of temperature? Physiologists usually examine the influence of body temperatures, while biogeographers and macroecologists tend to focus on environmental temperatures. We aim to examine the relationship between these two measures, to determine the factors...
Article
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Data about West African non-avian reptiles still remain scarce and, in particular, bibliography provides little information about the herpetofauna of the savannas of the Republic of Guinea. At the request of SNC Lavalin and with BHP Billiton financing we undertook, from September 2010 to March 2011, an herpetological survey of the Sangaredi area, l...