Mignucci A., Forget Fabien, Villeneuve R., Derridj O., McKindsey C. W., McKenzie D. J., Bourjea J. (2023). Residency, home range and inter-annual fidelity of three coastal fish species in a Mediterranean coastal lagoon. Estuarine Coastal and Shelf Science, 292, p. 108450 [12 p.]. ISSN 0272-7714.
Titre du document
Residency, home range and inter-annual fidelity of three coastal fish species in a Mediterranean coastal lagoon
Année de publication
2023
Auteurs
Mignucci A., Forget Fabien, Villeneuve R., Derridj O., McKindsey C. W., McKenzie D. J., Bourjea J.
Source
Estuarine Coastal and Shelf Science, 2023,
292, p. 108450 [12 p.] ISSN 0272-7714
In the Gulf of Lion (NW Mediterranean), fish species such as gilthead sea bream Sparus aurata, European seabass Dicentrarchus labrax, and salema Sarpa salpa show seasonal occupation of coastal lagoons, presumably as feeding grounds during their adult life stage. The role of the lagoons in these species' life cycles remains unknown, particularly with respect to their residency, space-use, and inter-annual fidelity. Using acoustic telemetry, the movements of 72 seabream, 58 seabass, and 81 salema were monitored over four years within Prevost Lagoon (Herault Department, Occitania Region), to characterize (1) the main seasonal patterns of space use inside the lagoon and (2) their annual migrations between the lagoon and the sea. Overall, all three species were highly resident in the lagoon during the spring/summer foraging season; seabass was the only species that also dis-played high residency to the lagoon throughout the winter breeding season. The three species showed differences in their space use, although they all mainly inhabited the deep lagoon centre and adjacent shellfish farms, with very small individual home ranges (mean +/- SD, 0.12 +/- 0.06 km(2) over all species). All species showed some inter-annual fidelity to the lagoon (>43% at minimum for seabream) although these fidelity rates were probably underestimated due to fishing mortality, which is probably high during the winter breeding season. Overall, this study reveals that coastal lagoons are key foraging habitats for these species in the Gulf of Lion. The high residency and inter-annual fidelity suggest that any increase of anthropogenic pressure within the lagoon could negatively impact these fish populations. Therefore, protection of such productive habitats could be beneficial for long-term management of emblematic coastal species and the fisheries that they support.
Plan de classement
Ecologie, systèmes aquatiques [036]
;
Ressources halieutiques [040]
Description Géographique
MEDITERRANEE ; FRANCE
Localisation
Fonds IRD [F B010089550]
Identifiant IRD
fdi:010089550
