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Emergence pattern of loggerhead turtle (Caretta caretta) hatchlings from Kyparissia Bay, Greece
Adam, V.; Tur, C.; Rees, A.F.; Tomás, J. (2007). Emergence pattern of loggerhead turtle (Caretta caretta) hatchlings from Kyparissia Bay, Greece. Mar. Biol. (Berl.) 151(5): 1743-1749. http://dx.doi.org/10.1007/s00227-007-0607-2
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793
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| Auteurs | | Top |
- Adam, V.
- Tur, C.
- Rees, A.F.
- Tomás, J.
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| Abstract |
The present study describes the emergence pattern of loggerhead sea turtle hatchlings (Caretta caretta) from a nesting beach in Kyparissia Bay (Greece). We try to establish the role played by hatchling biometry, nest relocation and distance from nest to the sea on this emergence pattern. We surveyed a total of 32 nests, and found long emergence periods (mean = 6.7 nights). The majority of emergences occurred at night, mainly between 0030 and 0100 hours, and in small groups. Most of the hatchlings emerged from the nests the first night. We found no clear trend when we studied the effect of hatchling biometry between successive emergence days. We also found that relocation of the nests did not significantly affect the emergence pattern. However, we noted that in the relocated nests, hatchlings emerged in smaller groups. Emergence periods were inversely related to distance from the sea. In short, factors such as climate conditions, relocation and nest distance to the sea appear to have some effect on the emergence pattern. Therefore, they should be taken into account in both biological studies and management plans for sea turtle nesting beaches. Our results suggest leaving an extended period between the first emergence of hatchlings and the excavation of nests by researchers in future studies in the area. |
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