Correlations between local geoclimatic variables and hatchling body size in the sea turtles Caretta caretta and Chelonia mydas.

IF 2.3 Q2 ECOLOGY
Omar Rafael Regalado Fernández, Parima Parsi-Pour, John A Nyakatura, Jeanette Wyneken, Ingmar Werneburg
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Abstract

It has been widely demonstrated that air and sand temperatures influence the anatomy of sea turtle hatchlings. We examined the impact of precipitation during the nesting season on the hatchling body size of loggerhead and green turtles from 37 beaches worldwide. Longitudinal data collected between 2012 and 2018 from Florida (US) and from a sample on Bõa Vista Island (Cabo Verde) carried out in 2019 showed that loggerhead body size at hatching was negatively correlated with precipitation, while precipitation was not correlated with hatchling body size in green turtles. A meta-analysis revealed that precipitation is positively correlated with hatchling mass in loggerhead turtles, while it is positively correlated with straight carapace length and width in green turtle hatchlings. The strongest influence of precipitation was found in the middle of the incubation period of loggerhead turtles in Cabo Verde, and we posit that this is due to an increase in the uptake of water for embryonic growth. These findings highlight the great importance of understanding the correlated effects of regional environmental variables, such as precipitation, on the development of sea turtle hatchlings and will have an impact on the evaluation of ongoing conservation and climate change discussions.

Abstract Image

海龟 Caretta caretta 和 Chelonia mydas 的当地地理气候变量与幼体体型之间的相关性。
大量事实证明,气温和沙温会影响海龟幼体的解剖结构。我们研究了筑巢季节降水对全球 37 个海滩的蠵龟和绿海龟幼体体型的影响。2012年至2018年期间从佛罗里达(美国)收集的纵向数据以及2019年在博阿维斯塔岛(佛得角)进行的抽样调查显示,蠵龟孵化时的体型与降水量呈负相关,而降水量与绿海龟孵化时的体型无关。一项荟萃分析表明,降水量与蠵龟孵化时的体型呈正相关,而与绿海龟孵化时的躯干长度和宽度呈正相关。降水对佛得角蠵龟孵化期中期的影响最大,我们认为这是由于胚胎生长对水分的吸收增加所致。这些发现凸显了了解地区环境变量(如降水)对海龟幼体发育的相关影响的重要性,并将对正在进行的保护和气候变化讨论的评估产生影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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