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首页> 外文期刊>Marine ecology >Genetic seascape of the threatened Caribbean elkhorn coral, Acropora palmata, on the Puerto Rico Shelf
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Genetic seascape of the threatened Caribbean elkhorn coral, Acropora palmata, on the Puerto Rico Shelf

机译：波多黎各架上受威胁的加勒比麋鹿角珊瑚（Acropora palmata）的遗传海景

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It has been proposed that the elkhorn coral Acropora palmata is genetically separated into two distinct provinces in the Caribbean, an eastern and a western population admixing in Western Puerto Rico and around the Mona Passage. In this study, the genetic structure of A.palmata sampled at 11 Puerto Rican localities and localities from Curacao, the Bahamas and Guadeloupe were examined. Analyses using five microsatellite markers showed that 75% of sampled colonies had unique genotypes, the rest being clone mates. Genetic diversity among genets was high (H-E=0.761) and consistent across localities (0.685-0.844). F-ST ranged from -0.011 to 0.047, supporting low but significant genetic differentiation between localities within the previously reported eastern and western genetic provinces. Plots of genetic per geographic distances and significant Mantel tests supported isolation-by-distance (IBD) within Puerto Rico. Analysis with the software STRUCTURE favored a scenario with weak differentiation between two populations, assigning Eastern Puerto Rican locations (Fajardo and Culebra), Guadeloupe and Curacao to the Caribbean eastern population and Western Puerto Rican locations (west of Vega Baja and Ponce), Mona and the Bahamas to the Caribbean western population. Vieques and San Juan area harbored admixed profiles. Standardized F-ST per 1000km unit further supported higher differentiation between localities belonging to different STRUCTURE populations, with IBD being stronger within Puerto Rico than on larger regional scales. This stronger genetic transition seems to separate localities between putative eastern and western provinces in the Eastern Puerto Rican region, but not around the Mona Passage.
机译：有人提出，麋角珊瑚Acropora palmata在遗传上被分为加勒比两个不同的省，东部和西部人口在波多黎各西部和蒙娜通道附近混合。在这项研究中，检查了在11个波多黎各人地区和库拉索岛，巴哈马群岛和瓜德罗普岛地区采样的帕尔玛曲霉的遗传结构。使用五个微卫星标记的分析表明，采样菌落中有75％具有独特的基因型，其余为克隆伴侣。种系之间的遗传多样性很高（H-E = 0.761），并且各地间一致（0.685-0.844）。 F-ST的范围从-0.011到0.047，支持先前报道的东部和西部遗传省内地区之间较低但重要的遗传分化。每地理距离的遗传图和重要的Mantel测试支持波多黎各内部的按距离隔离（IBD）。使用软件STRUCTURE进行分析时，有利于在两个人口之间进行区分的情况，将波多黎各东部地区（法哈多和库莱布拉），瓜德罗普和库拉索岛分配给加勒比东部人口，波多黎各西部地区（维加巴哈和庞塞以西），莫纳巴哈马到加勒比西部人口。别克斯和圣胡安地区拥有混杂的轮廓。每1000公里单位的标准化F-ST进一步支持了不同结构人口的地区之间更高的区分度，波多黎各的IBD比更大的区域规模更强。这种更强的遗传转变似乎将波多黎各东部地区的东部和西部假定省份之间的地区分开了，但并非在蒙娜通道附近。

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