Shifting thermal tolerance windows throughout incubation affects sea turtle hatching success: implications for hatchery management and conservation

IF 2.1 3区生物学 Q2 MARINE & FRESHWATER BIOLOGY Marine Biology Pub Date : 2024-03-13 DOI:10.1007/s00227-024-04417-2

{"title":"Shifting thermal tolerance windows throughout incubation affects sea turtle hatching success: implications for hatchery management and conservation","authors":"","doi":"10.1007/s00227-024-04417-2","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Thermal conditions in the nest affect the development of sea turtle clutches, with high temperatures potentially reducing reproductive success and the quality of hatchlings. In a warming climate, increasing temperatures could become a threat to sea turtles in many locations. This has prompted the implementation or recommendation of climate mitigation strategies in nests that incubate in hatchery conditions. Here, olive ridley turtle (<em>Lepidochelys olivacea</em>) clutches relocated to a beach hatchery in Playa Grande, Costa Rica (10° 20 N, 85° 51 W) were used to study the effect of temperature on hatching success and hatchling size. Data from 5 nesting seasons (2017/18 to 2022/23, excluding 2020/21) were tested to determine the effect of mean incubation temperature by thirds of development, as well as over the whole incubation period. Hatching success was lower at low and high temperatures and higher at intermediate ones during the second and last thirds of development. Optimal mean temperature ranges were 29–32 °C and 32–35 °C across the second and last thirds of development respectively, and 30–32.5 °C during the whole incubation period. There was no statistically significant effect of temperature on hatching success during the first third of development. High temperature resulted in shorter carapace width but did not statistically affect mass or carapace length. The temperature effect on carapace width occurred in all thirds of development. Studying temperature effects on target species nests at the local level, throughout incubation, and over multiple years is important for applying climate mitigation strategies properly.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"135 1","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Marine Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s00227-024-04417-2","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Thermal conditions in the nest affect the development of sea turtle clutches, with high temperatures potentially reducing reproductive success and the quality of hatchlings. In a warming climate, increasing temperatures could become a threat to sea turtles in many locations. This has prompted the implementation or recommendation of climate mitigation strategies in nests that incubate in hatchery conditions. Here, olive ridley turtle (Lepidochelys olivacea) clutches relocated to a beach hatchery in Playa Grande, Costa Rica (10° 20 N, 85° 51 W) were used to study the effect of temperature on hatching success and hatchling size. Data from 5 nesting seasons (2017/18 to 2022/23, excluding 2020/21) were tested to determine the effect of mean incubation temperature by thirds of development, as well as over the whole incubation period. Hatching success was lower at low and high temperatures and higher at intermediate ones during the second and last thirds of development. Optimal mean temperature ranges were 29–32 °C and 32–35 °C across the second and last thirds of development respectively, and 30–32.5 °C during the whole incubation period. There was no statistically significant effect of temperature on hatching success during the first third of development. High temperature resulted in shorter carapace width but did not statistically affect mass or carapace length. The temperature effect on carapace width occurred in all thirds of development. Studying temperature effects on target species nests at the local level, throughout incubation, and over multiple years is important for applying climate mitigation strategies properly.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

在整个孵化过程中改变热耐受窗口会影响海龟孵化成功率：对孵化场管理和保护的影响

摘要海龟巢穴中的温度条件会影响海龟的发育，高温可能会降低海龟的繁殖成功率和幼龟的质量。在气候变暖的情况下，温度升高可能会对许多地方的海龟造成威胁。这促使人们在孵化条件下孵化的巢中实施或建议气候减缓策略。在此，我们利用迁移到哥斯达黎加普拉亚格兰德（北纬 10° 20，西经 85° 51）海滩孵化场的橄榄脊龟（Lepidochelys olivacea）巢来研究温度对孵化成功率和幼龟大小的影响。对5个筑巢季节（2017/18年至2022/23年，不包括2020/21年）的数据进行了测试，以确定平均孵化温度对三分之二发育期以及整个孵化期的影响。在孵化的第二和最后三分之二阶段，低温和高温下孵化成功率较低，而在中间温度下孵化成功率较高。在发育的后三分之二和后三分之二期间，最佳平均温度范围分别为29-32 °C和32-35 °C，整个孵化期为30-32.5 °C。在孵化的前三分之一阶段，温度对孵化成功率没有显著的统计学影响。高温导致躯壳宽度变短，但对质量和躯壳长度没有统计学影响。温度对鳞甲宽度的影响出现在所有三分之二的发育阶段。研究温度在当地、整个孵化过程以及多年中对目标物种巢穴的影响，对于正确应用气候减缓策略非常重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Marine Biology 生物-海洋与淡水生物学

CiteScore

4.20

自引率

8.30%

发文量

133

审稿时长

3-6 weeks

期刊介绍： Marine Biology publishes original and internationally significant contributions from all fields of marine biology. Special emphasis is given to articles which promote the understanding of life in the sea, organism-environment interactions, interactions between organisms, and the functioning of the marine biosphere.