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Endangered Species Research

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ESR 38:171-176 (2019)  -  DOI: https://doi.org/10.3354/esr00947

NOTE
Population assessment of the endemic angelfish Holacanthus limbaughi from Île de La Passion-Clipperton Atoll (Tropical Eastern Pacific)

Eric Clua1,2,*, Sandra Bessudo3, Jennifer E. Caselle4, Claude Chauvet5, Christian Jost1,6, Alan M. Friedlander7,8

1PSL Research University, CRIOBE, USR3278 EPHE-CNRS-UPVD, 58 Avenue Paul ALDUY, 66860 Perpignan, France
2Laboratoire d’excellence CORAIL, BP1013, 98729 Papetoai, French Polynesia
3Fundacion Malpelo y Otros Ecosystemas Marinos, Carrera 11 No. 87-51 local 4 piso 2, Bogotá, Colombia
4Marine Science Institute, University of California Santa Barbara, Santa Barbara, CA 93106, USA
5ACREM, 92 Rue Charleroi, 98000 Noumea, New Caledonia
6Université de la Polynésie française, BP 6570, 98702 Faa’a, French Polynesia
7Pristine Seas, National Geographic Society, Washington, DC 20036, USA
8Fisheries Ecology Research Lab, University of Hawai‘i, Honolulu, HI 96822, USA
*Corresponding author:

ABSTRACT: We provide the first assessment for a coral reef fish population of a potentially threatened endemic species from a remote and isolated oceanic island. Based on a 3-dimensional (3D) numerical field model of the reef habitat and underwater visual censuses conducted by 2 different teams in February and May 2016, we show that the 3.7 km2 of the Clipperton Atoll reefs shallower than 30 m host >50000 ind. (average density of 0.02 ind. m-2) of the endemic Clipperton angelfish Holacanthus limbaughi. Based on limited submersible observations to 150 m, the population likely extends below the 30 m depth stratum, resulting in an even larger population size and providing a potential depth refuge against expected warming ocean temperatures.


KEY WORDS: Coral reef fish · Pomacanthids · Endemicity · Underwater visual census · Video · Marine habitat mapping


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Cite this article as: Clua E, Bessudo S, Caselle JE, Chauvet C, Jost C, Friedlander AM (2019) Population assessment of the endemic angelfish Holacanthus limbaughi from Île de La Passion-Clipperton Atoll (Tropical Eastern Pacific). Endang Species Res 38:171-176. https://doi.org/10.3354/esr00947

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