Orientation of Mediterranean fish larvae varies with location

Rossi, Alma; Irisson, Jean‐Olivier; Levaray, Marc; Pasqualini, Vanina; Agostini, Sylvia

doi:10.1007/s00227-019-3548-7

Cited by 8 publications

(4 citation statements)

References 52 publications

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“…From the flexion stage, mahi-mahi are thus able to use a directional light source coming from above the surface, such as the sun's light observed through Snell's window in the ocean [56], and orient relatively to it. The ability of late stage larvae of coastal species to use the sun compass has been demonstrated in situ [9,57], and in laboratory as a time-compensated compass [36]; our results thus indicate that the ELH stages of the pelagic species Coryphaena hippurus likely possess similar abilities.…”

Section: Discussionsupporting

confidence: 55%

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

Faillettaz

Johnson

Dahlmann

et al. 2020

Oceans

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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.

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Section: Discussionsupporting

confidence: 55%

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

Faillettaz

Johnson

Dahlmann

et al. 2020

Oceans

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“…The above-mentioned approaches consider larvae as passive particles but do not contemplate the changes occurring from pre-metamorphic to postflexion stages. Studies based on experimental trials have shown that white seabream larvae approaching the settlement stage have swimming abilities that can be used to orientate migration from the egg hatching area to the settlement habitats (Rossi et al 2019). Studying the swimming performance of flexion and post-flexion larvae of white seabream, Baptista et al (2019) supported the hypothesis that larvae are able to influence their own transport and distribution in coastal areas by means of their own swimming capabilities.…”

Section: Larvaementioning

confidence: 87%

Movement ecology of the white seabream Diplodus sargus across its life cycle: a review

Giacalone¹,

Pipitone²,

Abecasis

et al. 2022

Environ Biol Fish

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The white seabream Diplodus sargus (L., 1758) (Osteichthyes, Sparidae) is a littoral species living mainly in rocky habitats and distributed in the eastern Atlantic and the Mediterranean. This species is targeted by artisanal and recreational fisheries and presents a high commercial importance. Although classified by IUCN as a “least concern” species, it has been the object of marine ranching and restocking initiatives to counteract locally intense exploitation. Here, we review the current knowledge on the movement ecology of white seabream given the relevance of animal movement in ecological and behavioral studies and their potential application in management and conservation. The literature on this topic was analyzed in order to summarize the results of past research and to identify the gaps that still exist on the matter. We reviewed a total of 27 papers focusing on the movement ecology of white seabream, where acoustic telemetry (n = 12), underwater visual observation and traditional tagging (n = 6), genetic analysis (n = 6), and otolith microchemistry (n = 3) were used. While the first three methods were applied to juvenile and adult fish, the last one was also used with larvae, which have been the object of experimental trials to ascertain their swimming abilities. The largest amount of information on activity rhythms (diurnal with a few exceptions), movement patterns (short distances), homing (ability to come back to the capture site), site fidelity (high), and home range (< 200 ha on average and highly related with seabed morphology) were obtained through acoustic telemetry, whose main limitation is the minimum body size required for its application. The environmental variables found to affect movement patterns in this species are water temperature (which triggers spawning-based vertical movements), local sea conditions (which affect short-scale movements in juveniles), and the main seabed features (orientation and habitat type). The main gaps identified, which need more extensive research and some technological improvements, include the study of the effects of environmental variables on fish movements and further investigations on the movement patterns of juveniles.

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“…In the experiment of Butler & Tankersley (2020) , L. polyphemus larvae exhibited a positive rheotaxis in the presence of chemical cues from seagrass associated with their settlement sites, which may imply that the strong tendency of early juveniles to remain close to the beach is a consequence of upstream movement behavior mediated by habitat chemical cues. However, the mechanism of post-larval orientation and settlement is likely species- and/or site-specific, depending on the perceived coastal environmental conditions ( Rossi et al, 2019a ).…”

Section: Introductionmentioning

confidence: 99%

Chemically mediated rheotaxis of endangered tri-spine horseshoe crab: potential dispersing mechanism to vegetated nursery habitats along the coast

Kwan

Yang

Wang

et al. 2022

PeerJ

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Background An enhanced understanding of larval ecology is fundamental to improve the management of locally depleted horseshoe crab populations in Asia. Recent studies in the northern Beibu Gulf, China demonstrated that nesting sites of Asian horseshoe crabs are typically close to their nursery beaches with high-density juveniles distributed around mangrove, seagrass and other structured habitats. Methods A laboratory Y-maze chamber was used to test whether the dispersal of early-stage juvenile tri-spine horseshoe crab Tachypleus tridentatus is facilitated by chemical cues to approach suitable nursery habitats. The juvenile orientation to either side of the chamber containing controlled seawater or another with various vegetation cues, as well as their movement time, the largest distance and displacement were recorded. Results The juveniles preferred to orient toward seagrass Halophila beccarii cues when the concentration reached 0.5 g l−1, but ceased at 2 g l−1. The results can be interpreted as a shelter-seeking process to get closer to the preferred settlement habitats. However, the juveniles exhibited avoidance behaviors in the presence of mangrove Avicennia marina and invasive saltmarsh cordgrass Spartina alterniflora at 2 g l−1. The juveniles also spent less time moving in the presence of the A. marina cue, as well as reduced displacement in water containing the S. alterniflora cue at 1 and 2 g l−1. These results may explain the absence of juvenile T. tridentatus within densely vegetated areas, which have generally higher organic matter and hydrogen sulfide. Conclusion Early-stage juvenile T. tridentatus are capable of detecting and responding to habitat chemical cues, which can help guide them to high-quality settlement habitats. Preserving and restoring seagrass beds in the intertidal areas should be prioritized when formulating habitat conservation and management initiatives for the declining horseshoe crab populations.

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Orientation of Mediterranean fish larvae varies with location

Cited by 8 publications

References 52 publications

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

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

Movement ecology of the white seabream Diplodus sargus across its life cycle: a review

Chemically mediated rheotaxis of endangered tri-spine horseshoe crab: potential dispersing mechanism to vegetated nursery habitats along the coast

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