Habitat selection by marine larvae in changing chemical environments

David Lecchini 1, 2 D.L. Dixson 3 Gaël Lecellier 1, 2, 4 Natacha Roux 5, 1 Bruno Frédérich 6 Marc Besson 7, 1 Y. Tanaka 8 B. Banaigs 1 Y. Nakamura 9
1 CRIOBE - Centre de recherches insulaires et observatoire de l'environnement
2 LabEX CORAIL - Laboratoire d'Excellence CORAIL
3 School of Marine Science and Policy
4 Université Paris-Saclay
5 BIOM - Biologie intégrative des organismes marins
6 Laboratoire de Morphologie Fonctionnelle et Evolutive
7 IGFL - Institut de Génomique Fonctionnelle de Lyon
8 sesoko station
9 Graduate School of Kuroshio Science
Abstract : The replenishment and persistence of marine species is contingent on dispersing larvae locating suitable habitat and surviving to a reproductive stage. Pelagic larvae rely on environmental cues to make behavioural decisions with chemical information being important for habitat selection at settlement. We explored the sensory world of crustaceans and fishes focusing on the impact anthropogenic alterations (ocean acidification, red soil, pesti- cide) have on conspecific chemical signals used by larvae for habitat selection. Crustacean (Stenopus hispidus) and fish (Chromis viridis) larvae recognized their conspecifics via chemical signals under control conditions. In the presence of acidified water, red soil or pesticide, the ability of larvae to chemically recognize conspecific cues was altered. Our study highlights that recruitment potential on coral reefs may decrease due to anthropo- genic stressors. If so, populations of fishes and crustaceans will continue their rapid decline; larval recruitment will not replace and sustain the adult populations on degraded reefs
Keywords : Coral reef Larval recruitment Acidification Pesticides Red soil pollution
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Journal articles
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Submitted on : Thursday, March 16, 2017 - 11:54:58 AM
Last modification on : Wednesday, November 20, 2019 - 7:11:00 AM

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David Lecchini, D.L. Dixson, Gaël Lecellier, Natacha Roux, Bruno Frédérich, et al.. Habitat selection by marine larvae in changing chemical environments. Marine Pollution Bulletin, Elsevier, 2016, pp.210-217. ⟨10.1016/j.marpolbul.2016.08.083⟩. ⟨hal-01491052⟩

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