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Spatio-temporal distribution and migration of adult male loggerhead sea turtles (Caretta caretta) in the Mediterranean Sea: further evidence of the importance of neritic habitats off North Africa
Authors:Paolo Casale  Daniela Freggi  Angelo Cinà  Massimiliano Rocco
Institution:1. Department of Biology and Biotechnologies “Charles Darwin”, University of Rome “La Sapienza”, Viale dell’Università 32, 00185, Rome, Italy
2. WWF Italy, via Po 25c, 00198, Rome, Italy
4. via Antonio Calderara 29, 00125, Rome, Italy
3. Sea Turtle Rescue Centre, WWF Italy, 92010, Lampedusa, Italy
Abstract:Ten adult male loggerhead sea turtles, captured by trawlers or dip nets, were satellite-tracked from a neritic foraging ground in the Mediterranean in order to investigate adult spatio-temporal distribution and breeding migration. Five individuals migrated to potential breeding sites in Libya and one to Greece. The results complement previous studies and show that: (1) the Tunisian shelf may be more important for turtles from Libyan rookeries than previously thought; (2) male tracks corroborate a conservation hotspot previously identified for juveniles; (3) the north African coast represents a preferred migratory corridor, unless open sea routes are more direct; (4) adult males may exhibit high fidelity to relatively small areas, without evident seasonal differences; (5) adults home ranges were smaller and more neritic than juveniles frequenting the same area; (6) males may frequent multiple courtship areas; (7) the average remigration interval of males frequenting this region is longer than 1 year.
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