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首页> 外文期刊>Chelonian conservation and biology >Sex Ratio of Green Turtle (Chelonia mydas) Hatchlings at Sugozu, Turkey: Higher Accuracy with Pivotal Incubation Duration
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Sex Ratio of Green Turtle (Chelonia mydas) Hatchlings at Sugozu, Turkey: Higher Accuracy with Pivotal Incubation Duration

机译：土耳其Sugozu的绿海龟（Chelonia mydas）幼体的性别比率：关键孵化持续时间的准确性更高

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摘要

The majority of green turtle (Chelonia mydas) nests in the Mediterranean basin are found on the eastern Mediterranean beaches of Turkey. There are relatively few studies on the sex ratio of green turtle hatchlings for Turkey. In this study, 12 nests on the Sugozu beaches were equipped with temperature data-loggers during the nesting seasons of 2008 and 2009. Temperatures for the entire incubation period and for the middle third were close to the pivotal temperature around 29.0 degrees C. The average incubation duration for nests with known temperature was 52.8 d. An assessment of incubation durations together with histological analysis of 188 gonad samples collected from 103 nests revealed a pivotal incubation duration of 54.3 d and constant temperature equivalent conversion revealed 54 d. This value was identified for the first time for green turtles on the beaches of the eastern Mediterranean in Turkey based on 196 nests with known incubation duration; these nests showed a female-biased sex ratio in 2008 and 2009 (with 54.9% and 56.5%, respectively). Using incubation duration can increase sample size and therefore accuracy of sex ratio predictions without any hatchling sacrifice.
机译：地中海盆地中的大多数绿海龟（Chelonia mydas）巢位于土耳其东部地中海海滩上。关于土耳其绿海龟幼体性别比例的研究相对较少。在这项研究中，Sugozu海滩上的12个巢穴在2008年和2009年的筑巢季节配备了温度数据记录器。整个孵化期和中间三分之一的温度都接近29.0摄氏度左右的关键温度。平均温度已知的巢的潜伏期为52.8 d。对103个巢中收集的188个性腺样本的潜伏期进行了评估，并进行了组织学分析，发现潜伏期为54.3 d，恒温等效转化为54 d。该值是根据196个已知孵化持续时间的鸟巢首次在土耳其东部地中海海滩上的绿海龟确定的；这些巢在2008年和2009年显示出女性偏向的性别比（分别为54.9％和56.5％）。使用孵育持续时间可以增加样本量，因此可以在没有任何孵化牺牲的情况下提高性别比预测的准确性。

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