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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Genetic characterization of green turtles (Chelonia mydas) from Sao Tome and Principe: Insights on species recruitment and dispersal in the Gulf of Guinea
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Genetic characterization of green turtles (Chelonia mydas) from Sao Tome and Principe: Insights on species recruitment and dispersal in the Gulf of Guinea

机译：圣多美和普林西比的绿色乌龟（Chelonia Mydas）的遗传表征：几内亚海湾物种招聘与分散的见解

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摘要

Genetic studies on green sea turtles (Chelonia mydas) in the Eastern Atlantic have mostly focused on reproductive females, with limited information available regarding juveniles and foraging grounds. Improved understanding of genetic diversity and patterns of connectivity between nesting and foraging grounds is critical to identify management units and delineate suitable conservation strategies. Here we analyzed data from 11 microsatellite markers and sequences of the mitochondrial control region from both juveniles and females sampled in foraging and nesting aggregations around Sao Tome and Principe islands, in the Gulf of Guinea, West Africa. Both nuclear and mtDNA data were congruent in showing that Sao Tome and Principe's green turtles population exhibit high levels of genetic diversity, which are similar to those reported for other foraging aggregates in the Atlantic. Although signs of population substructure among foraging and nesting grounds of Sao Tome and Principe islands were not apparent, our analysis based on mtDNA marker showed that both juvenile and adult turtles were genetically differentiated from other foraging and nesting Atlantic populations. The similar levels of genetic diversity found in both juveniles and females are consistent with the results from mixed stock analyses, which suggested that Sao Tome and Principe's rookery is the primary source of juveniles to the local foraging aggregation. Taken these aspects in consideration, we argue that Sao Tome and Principe green turtles show limited dispersal and should be considered an important management unit, and conservation actions in this archipelago must be implemented not only at the level of the rookery but should also include the foraging aggregations.
机译：在东部大西洋的绿海龟（Chelonia Mydas）的遗传研究主要专注于生殖女性，有关少年和觅食地提供有限的信息。提高了对巢式和觅食地之间的遗传多样性和连接模式的理解对于识别管理单位和描绘适当的保护策略至关重要。在这里，我们分析了来自少年和女性的11微卫星标记和线粒体控制区域的序列，在遗传和嵌套在西非侨民周围的觅食和筑巢岛上采样的少年和女性。核和MTDNA数据都是一致的，在表明圣多美和普林西比的绿色乌龟人口表现出高水平的遗传多样性，这与大西洋中其他觅食汇总的人相似。虽然Sao Tome和Principe群岛的觅食和筑巢地口中的人口亚结构存在迹象并不明显，但我们基于MTDNA标记的分析表明，少年和成人龟在其他觅食和嵌套大西洋群体中遗传地区分。在少年和女性中发现的类似遗传多样性水平与混合股票分析的结果一致，这表明圣多美和普林西比的Rookery是少年对局部觅食聚集的主要来源。考虑到这些方面，我们争辩说，圣多美和普林西比绿龟表现出有限的分散，应该被认为是一个重要的管理单元，而这一群岛的保护行动不仅必须在罗布德的水平上实施，但也应该包括觅食聚合。

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  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2019年第9期|151181.1-151181.9|共9页
  • 作者

    Hancock Joana M.; Vieira Sara; Taraveira Lucio; Santos Aladino; Schmitt Vanessa; Semedo Alcides; Patricio Ana R.; Ferrand Nuno; Goncalves Helena; Sequeira Fernando;

  • 作者单位

    Univ Lisbon cE3c Ctr Ecol Evolut & Environm Changes Fac Ciencias Edificio C2 5 Piso Sala 2-5-41 Campo Grande P-1749016 Lisbon Portugal|Univ Porto InBIO CIBIO Res Ctr Biodivers & Genet Resources Campus Agrario Vairao P-4485661 Vairao Portugal;

    Assoc Programa Tato Sitio Pedragosa P-8600013 Barao De Sao Joao Portugal;

    MARAPA Mar Ambiente & Pesca Artesanal Largo Bom Despacho Sao Tome and Principe 292 Cent Afr Republ;

    MARAPA Mar Ambiente & Pesca Artesanal Largo Bom Despacho Sao Tome and Principe 292 Cent Afr Republ;

    Fundacao Principe Trust Principe Sao Tome & Prin Cent Afr Republ;

    Fundacao Principe Trust Principe Sao Tome & Prin Cent Afr Republ;

    ISPA Inst Univ MARE Marine & Environm Sci Ctr Lisbon Portugal|Univ Exeter Ctr Ecol & Conservat Exeter Devon England;

    Univ Porto InBIO CIBIO Res Ctr Biodivers & Genet Resources Campus Agrario Vairao P-4485661 Vairao Portugal;

    Univ Porto InBIO CIBIO Res Ctr Biodivers & Genet Resources Campus Agrario Vairao P-4485661 Vairao Portugal|Univ Porto MHNC P-4099002 Porto Portugal;

    Univ Porto InBIO CIBIO Res Ctr Biodivers & Genet Resources Campus Agrario Vairao P-4485661 Vairao Portugal;

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  • 正文语种 eng
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  • 关键词

    Chelonia mydas; Dispersal; Connectivity; Genetic diversity; Eastern Atlantic; Mixed stock analysis;

    机译：Chelonia Mydas;分散;连接;遗传多样性;东部大西洋;混合股票分析;

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