Habitat selection by marine larvae in changing chemical environments

David Lecchini; D.L. Dixson; Gaël Lecellier; Natacha Roux; Bruno Frédérich; Marc Besson; Y. Tanaka; B. Banaigs; Y. Nakamura

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

Document type :

Journal articles

Domain :

Environmental Sciences / Biodiversity and Ecology

Environmental Sciences / Global Changes

Life Sciences [q-bio] / Ecology, environment / Ecosystems

Complete list of metadatas

https://hal-univ-perp.archives-ouvertes.fr/hal-01491052
Contributor : Dorian Miler <>
Submitted on : Thursday, March 16, 2017 - 11:54:58 AM
Last modification on : Thursday, August 29, 2019 - 3:28:04 PM

Habitat selection by marine larvae in changing chemical environments

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