Cutzi Bedolla-Ochoa, Miguel Angel Reyes-López, Hervey Rodríguez-González, Carlos Delgado-Trejo
Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa C.P. 88710, Tamaulipas, Mexico.
Instituto de Investigaciones sobre los Recursos Naturales, Universidad Michoacana de san Nicolás de Hidalgo, Morelia C.P. 58330, Michoacán, Mexico.
Animals (Basel). 2023 Jan 25;13(3):406. doi: 10.3390/ani13030406.
Sea turtles present strategies that have allowed them to survive and reproduce. They spend most of their lives in the sea, except when they emerge as hatchlings from the nest and when the adult females return to nest. Those moments of their life cycle are vital for their reproductive success, conservation, and knowledge of their biology. This study reports the life history traits exhibited by female black sea turtles from Colola Beach, Mexico using morphometric and reproductive data obtained during 15 sampling seasons (1985-2000, n = 1500). The results indicate that nesting females have a mean body size of 85.7 cm and reach sexual maturity at 24 years old at a minimum size of 68 cm. Females deposit a mean of 69.3 eggs per clutch, and the mean fecundity was 196.4 eggs per female per season. The remigration intervals of 3 and 5 years were the most frequent registered. The life history traits found in the black sea turtle population present the lowest values reported with respect to studies conducted in the Atlantic and Indo-Pacific green turtle populations, which supports the hypothesis that this population is recovering, since morphometric and reproductive data represent young nesting turtles.
海龟展现出了使其得以生存和繁殖的策略。它们一生中的大部分时间都在海里度过，只有刚孵化的幼龟从巢穴中出来以及成年雌龟返回巢穴产卵时除外。它们生命周期中的这些时刻对于其繁殖成功、保护以及对其生物学的了解至关重要。本研究报告了墨西哥科洛拉海滩雌性黑海龟所表现出的生活史特征，这些特征是利用在15个采样季节（1985 - 2000年，n = 1500）获得的形态测量和繁殖数据得出的。结果表明，筑巢雌龟的平均体长为85.7厘米，在24岁时达到性成熟，最小体长为68厘米。雌龟每窝平均产卵69.3枚，平均繁殖力为每只雌龟每季节196.4枚卵。最常记录到的回游间隔为3年和5年。在黑海龟头种群中发现的生活史特征与在大西洋和印度 - 太平洋绿海龟种群中进行的研究相比呈现出最低值，这支持了该种群正在恢复的假设，因为形态测量和繁殖数据代表的是年轻的筑巢海龟。
