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Foraging of the green sea turtle Chelonia mydas on seagrass beds at Mayotte Island (Indian Ocean), determined by acoustic transmitters ArchiMer
Taquet, Coralie; Taquet, Marc; Dempster, T; Soria, M; Ciccione, S; Roos, David; Dagorn, L.
We studied the foraging rhythms of green sea turtles Chelonia mydas on the seagrass beds of N'Gouja Bay, Mayotte Island (Comoros Archipelago) with acoustic transmitters and moored listening stations. We monitored 8 tagged turtles (4 probable males, 3 probable females and 1 immature), from 70 to 109 cm curved carapace length (CCL), for durations ranging from 5 to 92 d. The turtles exhibited a regular diel pattern: they foraged mainly during the day (on average 87% of seagrass detections were between 06:00 and 18:00 h) and rested on the inner reef slope during the night. Night time feeding activities were observed on the seagrass bed when the night light was high. The presence of turtles on the seagrass bed at night was significantly correlated with a night...
Tipo: Text Palavras-chave: Foraging rhythm; Listening station; Acoustic transmitter; Green sea turtle; Mayotte; Southwestern Indian Ocean; Chelonia mydas.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-3616.pdf
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