بررسي زيستگاه و خصوصيات زيست سنجي لاك پشت گونه نوك عقابي Eretmochelys imbricata در تالابهاي ساحلي خليج فارس، جزيره نخيلو استان بوشهر

Study on the habitats and biometrical parameters of the Sea Turtle (Eretmochelys imbricata) in the coastal wetlands of Persian Gulf, Nakhielo island, Bushehr Province

This study carried out during January 2006 to August 2007. Tagging and biological measurements were done on 42 pieces of Hawksbill turtle .The following parameters : sizes of straight length , width of carapace, length of tail, reproductive parameters such as total laid eggs, the number of normal and abnormal eggs, weight and the diameter of eggs were measured. Analysis on the soil types of different nesting sizes and successes in nesting of the eggs showed that Nakhielo Island was a suitable main land for nesting of Hawksbill turtles with fine soil particles. The average weight and straight length size were 49.45 Kg and 65.12 cm , which in comparison with Hawksbill turtles in other parts of world, were smaller. The total average number of eggs were 92 and the mean diameter and weight of eggs were measured as following : 37.18 mm & 30.45 gr that was similar to the same species in other countries along the Persian Gulf but in comparison with same species in other parts of the world was so smaller in size .The results showed that the Hawksbill Turtle population nesting in Iranian coasts, were similar to the same species in other countries along the Persian Gulf , but had larger eggs diameters and larger new borne turtles that leaded to higher survival rate of this species in Nakhielo and other Islands of the Boshehr Province.