Özdilek Şükran Yalçın, Sönmez Bektaş, Mestav Burcu
Çanakkale Onsekiz Mart University, Faculty of Arts and Sciences, Department of Biology, Çanakkale, Türkiye. E-mail:
Sivas Cumhuriyet University, Suşehri Timur Karabal Vocational School, 58600, Suşehri, Sivas, Türkiye. E-mail:
Zool Stud. 2024 Nov 11;63:e31. doi: 10.6620/ZS.2024.63-31. eCollection 2024.
The isotopic discrimination between a mother and her hatchlings has been modelled in various vertebrates, including sea turtles. In addition to the linear relation between δC and δN isotope values of the mother - hatchling couple, there is missing data on the combined effects of both isotopes, which represent ecological niches of a species. The stable δC and δN isotope signatures of live hatchlings and their mother's epidermis tissues were used in green turtles. The samples were taken from three main breeding beaches, Akyatan, Sugözü and Samandağ in Türkiye during the 2020 nesting season. δN and δC values of hatchlings were not significantly different from those of mothers. Significant relationships were found between hatchlings and their mothers in terms of δC value. Furthermore, when the hatchling isotopic niche size is known, the condition probabilities of estimating the mother's isotopic niche size were 85.16% and 92.88% with the 0.95 and 0.99 alpha levels. In addition to showing a linear relationship between hatchlings and their mother's single isotopic composition, the current study offers a novel insight that proposes a niche overlap concept using two isotopes to comprehend the mother-hatchling relationship of green turtles living in the eastern Mediterranean.
包括海龟在内的各种脊椎动物中，都对母亲与其幼崽之间的同位素歧视进行了建模。除了母亲 - 幼崽对的δC和δN同位素值之间的线性关系外，关于这两种代表物种生态位的同位素的综合影响，还缺少相关数据。绿海龟研究中使用了幼龟及其母亲表皮组织的稳定δC和δN同位素特征。样本取自2020年筑巢季节土耳其的三个主要繁殖海滩，即阿克亚坦、苏戈祖和萨曼达。幼龟的δN和δC值与母亲的δN和δC值没有显著差异。在δC值方面，幼龟与其母亲之间存在显著关系。此外，当已知幼龟同位素生态位大小时，在α水平为0.95和0.99的情况下，估计母亲同位素生态位大小的条件概率分别为85.16%和92.88%。除了显示幼龟与其母亲单一同位素组成之间的线性关系外，本研究还提供了一个新的见解，即提出使用两种同位素的生态位重叠概念来理解生活在东地中海的绿海龟的母婴关系。
