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Article

Ontogeny of Orientation during the Early Life History of the Pelagic Teleost Mahi-Mahi, Coryphaena hippurus Linnaeus, 1758

1
Department of Marine Biology and Ecology, University of Miami, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL 33149, USA
2
Ifremer, STH, Station de Lorient, 8 rue François Toullec, F-56100 Lorient, France
3
Department of Marine Ecosystems and Society, University of Miami, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, FL 33149, USA
*
Authors to whom correspondence should be addressed.
Received: 6 July 2020 / Revised: 25 September 2020 / Accepted: 29 September 2020 / Published: 8 October 2020
(This article belongs to the Special Issue Fish Larval Biology and Ecology)
Understanding the orientation behavior and capabilities in early life history (ELH) of fishes is critical for studying their dispersal but has, surprisingly, never been tested in any pelagic species. We here investigate the ontogeny of orientation and swimming abilities of the pelagic Coryphaena hippurus Linnaeus, 1758 larvae, hereafter mahi-mahi, through their ELH stages using the Drifting In Situ Chamber (DISC) in a laboratory setup. The DISC was deployed in a large (3 m3) circular aquarium in order to control the stimulus perceived by the fish and to identify behavioral response at the individual, developmental stage, and population levels. A total of 79 individual ranging from 7 to 23 days post hatch and from preflexion to early juvenile stages were exposed to a directional light mimicking the sun’s position. Orientation towards the light direction was tested by switching the light by 180° among trials. To compare the orientation among development stages, we scaled the directionality by the swimming ability, therein defined as “directionality competence”. The results show that while mahi-mahi directionality competence increases through ontogeny, they acquire a positive and directional phototaxis behavior at the flexion stage. This potential solar orientation is kept through the early juvenile stage. Mahi-mahi may thus be able to use the sun as a compass in the open ocean as observed in the larval stages of demersal species seeking for settlement habitats. This ability notably develops before the improvement of their swimming capabilities, suggesting that early orientation—even at micro-scale—and swimming capabilities may be equally important for the survival of the ELH stages of pelagic species. View Full-Text
Keywords: early life history stages; Coryphaena hippurus; common dolphinfish; mahi-mahi; behavior; orientation; phototaxism; ontogeny; directionality competence early life history stages; Coryphaena hippurus; common dolphinfish; mahi-mahi; behavior; orientation; phototaxism; ontogeny; directionality competence
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MDPI and ACS Style

Faillettaz, R.; Johnson, E.; Dahlmann, P.; Syunkova, A.; Stieglitz, J.; Benetti, D.; Grosell, M.; Paris, C.B. Ontogeny of Orientation during the Early Life History of the Pelagic Teleost Mahi-Mahi, Coryphaena hippurus Linnaeus, 1758. Oceans 2020, 1, 237-250. https://0-doi-org.brum.beds.ac.uk/10.3390/oceans1040017

AMA Style

Faillettaz R, Johnson E, Dahlmann P, Syunkova A, Stieglitz J, Benetti D, Grosell M, Paris CB. Ontogeny of Orientation during the Early Life History of the Pelagic Teleost Mahi-Mahi, Coryphaena hippurus Linnaeus, 1758. Oceans. 2020; 1(4):237-250. https://0-doi-org.brum.beds.ac.uk/10.3390/oceans1040017

Chicago/Turabian Style

Faillettaz, Robin, Eve Johnson, Patrick Dahlmann, Alexandra Syunkova, John Stieglitz, Daniel Benetti, Martin Grosell, and Claire B. Paris 2020. "Ontogeny of Orientation during the Early Life History of the Pelagic Teleost Mahi-Mahi, Coryphaena hippurus Linnaeus, 1758" Oceans 1, no. 4: 237-250. https://0-doi-org.brum.beds.ac.uk/10.3390/oceans1040017

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