Visual and chemical cues in habitat selection of sepioid larvae |
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Authors: | Lecchini David |
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Affiliation: | a Centre IRD Nouméa, Institut de Recherche pour le Développement, UR 227 CoReUs, Nouméa, New Caledonia b Laboratoire d’Excellence “CORAIL”, USR 3278 CNRS-EPHE, CRIOBE, BP 1013, 98729 Papetoai, Moorea, French Polynesia |
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Abstract: | The present study explored, by experiments in aquaria, the modality of senses used by sepioid larvae (Euprymna scolopes) when searching for their species’ settlement habitat (Rangiroa, French Polynesia). Our results showed that E. scolopes larvae made active choices among the four habitats tested (living coral, dead coral, macroalgae and sand), and that their selective choice was influenced by presence or absence of conspecifics on the habitat. Sensory experiments showed that E. scolopes larvae differentiated between conspecifics and heterospecifics (and not between their preferred habitat versus the least preferred habitat) using both visual and olfactory cues. Overall, our results suggest species-specific cues may play a vital role in establishment spatial patterns at settlement. |
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Keywords: | Coral reefs Settlement cues Rangiroa Atoll |
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