Publications des scientifiques de l'IRD

Mathon L., Marques V., Mouillot D., Albouy C., Andrello M., Baletaud F., Borrero-Perez G. H., Dejean T., Edgar G. J., Grondin J., Guerin P. E., Hocdé Régis, Juhel J. B., Kadarusman E., Maire E., Mariani G., McLean M., F A. P., Pouyaud Laurent, Stuart-Smith R., Sugeha H. Y., Valentini A., Vigliola Laurent, Vimono I., Pellissier L. (2022). Cross-ocean patterns and processes in fish biodiversity on coral reefs through the lens of eDNA metabarcoding. Proceedings of the Royal Society B : Biological Sciences, 289 (1973), p. 20220162 [10 p.]. ISSN 0962-8452.

Titre du document
Cross-ocean patterns and processes in fish biodiversity on coral reefs through the lens of eDNA metabarcoding
Année de publication
2022
Type de document
Article référencé dans le Web of Science WOS:000791285600004
Auteurs
Mathon L., Marques V., Mouillot D., Albouy C., Andrello M., Baletaud F., Borrero-Perez G. H., Dejean T., Edgar G. J., Grondin J., Guerin P. E., Hocdé Régis, Juhel J. B., Kadarusman E., Maire E., Mariani G., McLean M., F A. P., Pouyaud Laurent, Stuart-Smith R., Sugeha H. Y., Valentini A., Vigliola Laurent, Vimono I., Pellissier L.
Source
Proceedings of the Royal Society B : Biological Sciences, 2022, 289 (1973), p. 20220162 [10 p.] ISSN 0962-8452
Increasing speed and magnitude of global change threaten the world's biodiversity and particularly coral reef fishes. A better understanding of large-scale patterns and processes on coral reefs is essential to prevent fish biodiversity decline but it requires new monitoring approaches. Here, we use environmental DNA metabarcoding to reconstruct well-known patterns of fish biodiversity on coral reefs and uncover hidden patterns on these highly diverse and threatened ecosystems. We analysed 226 environmental DNA (eDNA) seawater samples from 100 stations in five tropical regions (Caribbean, Central and Southwest Pacific, Coral Triangle and Western Indian Ocean) and compared those to 2047 underwater visual censuses from the Reef Life Survey in 1224 stations. Environmental DNA reveals a higher (16%) fish biodiversity, with 2650 taxa, and 25% more families than underwater visual surveys. By identifying more pelagic, reef-associated and crypto-benthic species, eDNA offers a fresh view on assembly rules across spatial scales. Nevertheless, the reef life survey identified more species than eDNA in 47 shared families, which can be due to incomplete sequence assignment, possibly combined with incomplete detection in the environment, for some species. Combining eDNA metabarcoding and extensive visual census offers novel insights on the spatial organization of the richest marine ecosystems.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Limnologie biologique / Océanographie biologique [034] ; Ecologie, systèmes aquatiques [036]
Description Géographique
PACIFIQUE ; OCEAN INDIEN ; TRIANGLE DE CORAIL ; CARAIBES ; PACIFIQUE SUD OUEST ; PACIFIQUE CENTRE ; OCEAN INDIEN OUEST
Localisation
Fonds IRD [F B010084747]
Identifiant IRD
fdi:010084747
Contact
  • Coordonnées :
    IST / IRD Ile-de-France
    32 avenue Henri Varagnat
    93140 Bondy Cedex
    France
    Horizon Pleins textes
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