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The Scientific World Journal
Volume 2014, Article ID 419410, 8 pages
Research Article

Sex Ratio Estimations of Loggerhead Sea Turtle Hatchlings at Kuriat Islands, Tunisia: Can Minor Nesting Sites Contribute to Compensate Globally Female-Biased Sex Ratio?

1Sfax Faculty of Sciences, University of Sfax, P.O. Box 1171, 3000 Sfax, Tunisia
2National Institute of Sea Sciences and Technologies, 3000 Sfax, Tunisia

Received 13 July 2014; Accepted 8 September 2014; Published 14 October 2014

Academic Editor: Veronique Martin-Jezequel

Copyright © 2014 Imed Jribi and Mohamed Nejmeddine Bradai. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Hatchling sex ratios in the loggerhead turtle Caretta caretta were estimated by placing electronic temperature recorders in seven nests at Kuriat islands (Tunisia) during the 2013 nesting season. Based on the mean temperatures during the middle third of the incubation period, and on incubation duration, the sex ratio of hatchlings at Kuriat islands was highly male-biased. Presently, the majority of hatchling sex ratio studies are focused on major nesting areas, whereby the sex ratios are universally believed to be heavily female-biased. Here we present findings from a minor nesting site in the Mediterranean, where the hatchling sex ratio was found to be male-biased, suggesting a potential difference between major and minor nesting sites.