Atlantic connectivity of a major green sea turtle Chelonia mydas foraging aggregation at the Banc d’Arguin, Mauritania

IF 2.6 2区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Endangered Species Research Pub Date : 2024-08-15 DOI:10.3354/esr01345
Ana Rita Patrício, Sophia A. Coveney, Anna Barbanti, Castro Barbosa, Annette C. Broderick, Nahi El’Bar, Brendan J. Godley, Joana M. Hancock, Aissa Regalla, Cheibani Senhoury, Ebaye Sidina, Benoît de Thoisy, Dominic Tilley, Sam Weber, Paulo Catry
{"title":"Atlantic connectivity of a major green sea turtle Chelonia mydas foraging aggregation at the Banc d’Arguin, Mauritania","authors":"Ana Rita Patrício, Sophia A. Coveney, Anna Barbanti, Castro Barbosa, Annette C. Broderick, Nahi El’Bar, Brendan J. Godley, Joana M. Hancock, Aissa Regalla, Cheibani Senhoury, Ebaye Sidina, Benoît de Thoisy, Dominic Tilley, Sam Weber, Paulo Catry","doi":"10.3354/esr01345","DOIUrl":null,"url":null,"abstract":"ABSTRACT: Understanding population connectivity is paramount for effective conservation. While genetic tools have elucidated sea turtle migration patterns, notable data gaps limit our understanding of ocean-wide connectivity, especially regarding east Atlantic green turtles. We characterized the genetic composition of a globally important green turtle foraging aggregation at the Banc d’Arguin, Mauritania, incorporating data from 323 individuals captured between 2018 and 2021. Using extended mitochondrial DNA D-loop (738 base pairs [bp]) and mitochondrial short tandem repeat (mtSTR; ~200 bp) markers, we assessed the genetic structure of Atlantic green turtle foraging aggregations and estimated the most likely origin of immature green turtles from the Banc d’Arguin using mixed stock analyses (MSAs). We identified 6 D-loop haplotypes, with a clear dominance of CM-A8.1 (91.8%) followed by CM-A5.1 (6.3%) and 4 rare haplotypes: CM-A1.4, CMA6.1, CM24.1 and CM36.1. We found 13 mtSTR haplotypes, with ‘7-12-4-4’ being dominant (89.0%). The genetic composition at the Banc d’Arguin differed significantly from the only foraging aggregation studied in West Africa to date—in the archipelago of Cabo Verde (located ca. 750 km from the Banc d’Arguin)—dominated by haplotype CM-A5. The MSA combining both genetic markers indicated that 87.6% of immature green turtles at the Banc d’Arguin originate from the major East Atlantic rookery at Poilão (Guinea-Bissau), but 11.6% come from more distant rookeries in South America (8.1%) and potentially Ascension Island (3.4%). We suggest that green turtle transatlantic movements may be more common than previously thought and highlight the importance of the Banc d’Arguin as a regional foraging hub for this species.","PeriodicalId":48746,"journal":{"name":"Endangered Species Research","volume":"633 1","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Endangered Species Research","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.3354/esr01345","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIODIVERSITY CONSERVATION","Score":null,"Total":0}
引用次数: 0

Abstract

ABSTRACT: Understanding population connectivity is paramount for effective conservation. While genetic tools have elucidated sea turtle migration patterns, notable data gaps limit our understanding of ocean-wide connectivity, especially regarding east Atlantic green turtles. We characterized the genetic composition of a globally important green turtle foraging aggregation at the Banc d’Arguin, Mauritania, incorporating data from 323 individuals captured between 2018 and 2021. Using extended mitochondrial DNA D-loop (738 base pairs [bp]) and mitochondrial short tandem repeat (mtSTR; ~200 bp) markers, we assessed the genetic structure of Atlantic green turtle foraging aggregations and estimated the most likely origin of immature green turtles from the Banc d’Arguin using mixed stock analyses (MSAs). We identified 6 D-loop haplotypes, with a clear dominance of CM-A8.1 (91.8%) followed by CM-A5.1 (6.3%) and 4 rare haplotypes: CM-A1.4, CMA6.1, CM24.1 and CM36.1. We found 13 mtSTR haplotypes, with ‘7-12-4-4’ being dominant (89.0%). The genetic composition at the Banc d’Arguin differed significantly from the only foraging aggregation studied in West Africa to date—in the archipelago of Cabo Verde (located ca. 750 km from the Banc d’Arguin)—dominated by haplotype CM-A5. The MSA combining both genetic markers indicated that 87.6% of immature green turtles at the Banc d’Arguin originate from the major East Atlantic rookery at Poilão (Guinea-Bissau), but 11.6% come from more distant rookeries in South America (8.1%) and potentially Ascension Island (3.4%). We suggest that green turtle transatlantic movements may be more common than previously thought and highlight the importance of the Banc d’Arguin as a regional foraging hub for this species.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
毛里塔尼亚阿尔金湾主要绿海龟觅食群的大西洋连通性
摘要:了解种群的连通性对于有效保护至关重要。虽然基因工具已经阐明了海龟的迁徙模式,但显著的数据缺口限制了我们对整个海洋连通性的了解,尤其是对东大西洋绿海龟的了解。我们结合 2018 年至 2021 年期间捕获的 323 只个体的数据,描述了毛里塔尼亚 Banc d'Arguin 一个具有全球重要意义的绿海龟觅食聚集地的遗传组成。利用扩展线粒体 DNA D-环(738 碱基对 [bp])和线粒体短串联重复(mtSTR;约 200 bp)标记,我们评估了大西洋绿海龟觅食聚集地的遗传结构,并利用混合种群分析(MSA)估计了来自 Banc d'Arguin 的未成熟绿海龟最可能的来源。我们确定了 6 个 D-环单倍型,其中 CM-A8.1 (91.8%)明显占优势,其次是 CM-A5.1(6.3%)和 4 个稀有单倍型:CM-A1.4、CMA6.1、CM24.1 和 CM36.1。我们发现了 13 个 mtSTR 单倍型,其中 "7-12-4-4 "为显性单倍型(89.0%)。阿金湾的遗传组成与迄今为止在西非研究的唯一一个觅食聚集地佛得角群岛(距阿金湾约 750 公里)的遗传组成有很大不同,该聚集地以单倍型 CM-A5 为主。结合这两种遗传标记的 MSA 表明,阿尔金湾 87.6% 的未成年绿海龟来自东大西洋的主要栖息地波良(几内亚比绍),但 11.6% 的绿海龟来自更远的南美洲栖息地(8.1%),也可能来自阿森松岛(3.4%)。我们认为,绿海龟跨大西洋活动可能比以前认为的更为普遍,并强调了阿金湾作为该物种区域觅食中心的重要性。
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
Endangered Species Research
Endangered Species Research BIODIVERSITY CONSERVATION-
CiteScore
5.50
自引率
6.50%
发文量
38
审稿时长
31 weeks
期刊介绍: ESR is international and interdisciplinary. It covers all endangered forms of life on Earth, the threats faced by species and their habitats and the necessary steps that must be undertaken to ensure their conservation. ESR publishes high quality contributions reporting research on all species (and habitats) of conservation concern, whether they be classified as Near Threatened or Threatened (Endangered or Vulnerable) by the International Union for the Conservation of Nature and Natural Resources (IUCN) or highlighted as part of national or regional conservation strategies. Submissions on all aspects of conservation science are welcome.
期刊最新文献
Habitat use of the micro-endemic day gecko Phelsuma antanosy in Sainte Luce, Madagascar, and the case for translocation Combining reproductive endocrinology and ROC analysis to identify changes with sex, age, and pregnancy status in botos Inia geoffrensis Combining UAVs and multi-sensor dataloggers to estimate fine-scale sea turtle density at foraging areas: a case study in the central Mediterranean Contemporary sightings of eastern North Pacific right whales, 2006 to 2023 Atlantic connectivity of a major green sea turtle Chelonia mydas foraging aggregation at the Banc d’Arguin, Mauritania
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1