ESR 23:23-33 (2014)  -  doi:10.3354/esr00555

Capture-mark-recapture modelling suggests an Endangered status for the Mayotte Island (eastern Africa) population of Indo-Pacific bottlenose dolphins

Claire Pusineri1,*, Christophe Barbraud2, Jeremy Kiszka3,4, Sarah Caceres1, Justine Mougnot1, Gabriel Daudin1, Vincent Ridoux3

1Office National de la Chasse et de la Faune Sauvage, 12 allée de la Forêt/Parc de la Providence, 97400 Saint-Denis, France
2Centre d’Etudes Biologiques de Chizé, CNRS UPR 1934, 79360 Villiers en Bois, France
3Université de La Rochelle, Laboratoire LIENSs, UMR 7266, CNRS-Université de La Rochelle, 2 rue Olympe de Gouge, 17000 La Rochelle, France
4Marine Sciences Program, Department of Biological Sciences, Florida International University, 3000 NE 151 St., North Miami, Florida 33181, USA
*Corresponding author:

ABSTRACT: We evaluated whether the Indo-Pacific bottlenose dolphins around the fast-developing island of Mayotte are threatened. We used opportunistic photo-identification data and capture-mark-recapture models to estimate key demographic parameters and then assessed the conservation status of the species using the IUCN Red List regional criteria. The population home range was estimated with the minimum convex polygon method as 978 km2, the annual abundance was estimated from closed population models as 82 ±19 SE individuals and the annual survival rate was estimated using a Cormack-Jolly-Seber model as 0.937 ±0.059 SE. From the data available, we believe migrations of individuals between Mayotte and its neighbouring islands are likely but would not exceed a few individuals per year. Based on IUCN guidelines for classification at local scales, we classified Indo-Pacific bottlenose dolphins around Mayotte as Endangered. We strongly recommend the establishment of a long-term population-monitoring program and the implementation of management measures.


KEY WORDS: Close population models · Cormack-Jolly-Seber · Abundance · Birth rate · Survival rate · Population growth rate · IUCN classification · Photo-identification


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Cite this article as: Pusineri C, Barbraud C, Kiszka J, Caceres S, Mougnot J, Daudin G, Ridoux V (2014) Capture-mark-recapture modelling suggests an Endangered status for the Mayotte Island (eastern Africa) population of Indo-Pacific bottlenose dolphins. Endang Species Res 23:23-33

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