Carolina de Lima Adam, Robert J. Toonen, David B. Carlon, Carla Zilberberg, Marcos Soares Barbeitos
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Although our results agree with depth-related genetic structuring in <i>F. fragum</i>, they did not support incipient speciation of the ‘tall’ and ‘short’ morphotypes. The preferred scenario also revealed a split between two main lineages of <i>F. gravida</i>, one from Ascension Island and the other from Brazil. The Brazilian lineage is further divided into a species that occurs throughout the Northeastern coast and another that ranges from the Abrolhos Archipelago to the state of Espírito Santo. BFD* scenarios were corroborated by analyses of SNP matrices with varying levels of missing data and by a speciation-based delimitation approach (DELINEATE). Our results challenge current notions about Atlantic reef corals because they uncovered surprising genetic diversity in <i>Favia</i> and rejected the long-standing hypothesis that Abrolhos Archipelago may have served as a Pleistocenic refuge during the last glaciations.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":null,"pages":null},"PeriodicalIF":4.6000,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Genetic structuring and species boundaries in the Atlantic stony coral Favia (Scleractinia, Faviidae)\",\"authors\":\"Carolina de Lima Adam, Robert J. Toonen, David B. Carlon, Carla Zilberberg, Marcos Soares Barbeitos\",\"doi\":\"10.1111/zsc.12652\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Scleractinian corals are the main modern builders of coral reefs, which are major hot spots of marine biodiversity. 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The Brazilian lineage is further divided into a species that occurs throughout the Northeastern coast and another that ranges from the Abrolhos Archipelago to the state of Espírito Santo. BFD* scenarios were corroborated by analyses of SNP matrices with varying levels of missing data and by a speciation-based delimitation approach (DELINEATE). 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引用次数: 0
摘要
硬骨鱼类珊瑚是珊瑚礁的主要现代建造者,而珊瑚礁是海洋生物多样性的主要热点。与加勒比海和印度洋-太平洋地区的珊瑚礁相比,大西洋南部珊瑚礁的研究还不够充分,有关其种群动态的许多假说都需要进一步验证。我们利用通过 ezRAD 恢复的数千个单核苷酸多态性(SNPs)来描述两栖大西洋硬珊瑚属 Favia 的遗传种群结构和物种边界。基于聚合的物种划界(BFD* - 贝叶斯因子划界)发现 F. fragum 和 F. gravida 是不同的物种。虽然我们的结果与 F. fragum 中与深度相关的遗传结构一致,但并不支持 "高 "和 "矮 "形态的萌芽物种。首选方案还揭示了 F. gravida 的两个主要品系之间的分裂,一个来自阿森松岛,另一个来自巴西。巴西种系又分为分布于整个东北海岸的一个种系和分布于从阿布罗尔霍斯群岛到圣埃斯皮里图州的另一个种系。通过分析不同缺失数据水平的 SNP 矩阵和基于物种划分的方法(DELINEATE),BFD* 方案得到了证实。我们的研究结果对目前有关大西洋珊瑚礁的观点提出了挑战,因为它们发现了令人吃惊的法维亚遗传多样性,并否定了阿布洛尔霍斯群岛在上一次冰川时期可能是一个更新世避难所这一由来已久的假说。
Genetic structuring and species boundaries in the Atlantic stony coral Favia (Scleractinia, Faviidae)
Scleractinian corals are the main modern builders of coral reefs, which are major hot spots of marine biodiversity. Southern Atlantic reef corals are understudied compared to their Caribbean and Indo-Pacific counterparts and many hypotheses about their population dynamics demand further testing. We employed thousands of single nucleotide polymorphisms (SNPs) recovered via ezRAD to characterize genetic population structuring and species boundaries in the amphi-Atlantic hard coral genus Favia. Coalescent-based species delimitation (BFD* – Bayes Factor Delimitation) recovered F. fragum and F. gravida as separate species. Although our results agree with depth-related genetic structuring in F. fragum, they did not support incipient speciation of the ‘tall’ and ‘short’ morphotypes. The preferred scenario also revealed a split between two main lineages of F. gravida, one from Ascension Island and the other from Brazil. The Brazilian lineage is further divided into a species that occurs throughout the Northeastern coast and another that ranges from the Abrolhos Archipelago to the state of Espírito Santo. BFD* scenarios were corroborated by analyses of SNP matrices with varying levels of missing data and by a speciation-based delimitation approach (DELINEATE). Our results challenge current notions about Atlantic reef corals because they uncovered surprising genetic diversity in Favia and rejected the long-standing hypothesis that Abrolhos Archipelago may have served as a Pleistocenic refuge during the last glaciations.