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首页> 外文期刊>Harmful Algae >Distribution and genetic diversity of the toxic benthic dinoflagellate genus Ostreopsis in Korea
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Distribution and genetic diversity of the toxic benthic dinoflagellate genus Ostreopsis in Korea

机译：韩国有毒底栖酸氨基葡萄球菌属的分布及遗传多样性

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摘要

Species belonging to the toxic dinoflagellate genus Ostreopsis are widespread, occurring from tropical to temperate waters. As mainly benthic/epiphytic species, they would be expected to show distinct geographical patterns. In this study, ribosomal DNA (rDNA) sequences from partial nuclear LSU D8-D10, 5.8S, and ITS regions were determined for 169 isolates of Ostreopsis species collected from three coastal sites (i.e., Jeju Island, Chuja Island, and Pohang) within Korea. The phylogenetic tree inferred from the LSU rDNA D8-D10 sequences showed that Korean Ostreopsis species corresponded to either Ostreopsis sp. 1 or sp. 6, with Ostreopsis sp. 1 being relatively predominant regarding their distribution. While Ostreopsis sp. 1 occurred throughout all the three sampling sites within Korea, Ostreopsis sp. 6 was confined to the northern part of Jeju Island. When further investigated, the genetic diversity of Ostreopsis sp. 1 in Korea based on ITS sequences showed a total of 21 haplotypes. The presumed ancestral haplotype H3, was also present in the Japanese and Russian populations of Ostreopsis sp. 1. Although the overall demographic history of all the Korean populations of Ostreopsis sp. 1 could not be clearly identified, probably due to a mixture of different regional demographic patterns within Korea, each Ostreopsis sp. 1 population showed a characteristic demographic pattern at a regional scale. While the Jeju Island Ostreopsis sp. 1 population showed a signal in agreement with population equilibrium, the Chuja Island and Pohang Ostreopsis sp. 1 populations showed distribution patterns that are expected in a sudden population expansion model. The results from this study provide a basis for a better understanding of the distribution and genetic structure of the Asian Ostreopsis sp. 1 populations.
机译：属于毒性的Dinoflagellate属的物种是普遍存在的，从热带到温带水域发生普及。主要是底栖/果皮物种，预计它们将显示不同的地理模式。在该研究中，测定来自部分核LSU D8-D10,5.8s及其区域的核糖体DNA（RDNA）序列，从三个沿海网站（即济州岛，楚王岛和浦岗）中收集的血小杂物种的169个分离物朝鲜。从LSU RDNA D8-D10序列推断的系统发育树表明，韩国血吸虫物种对应于Ostreopsis SP。 1或sp。 6，用鸵鸟sp。 1对其分布相对占主导地位。鸵鸟sp。 1发生在韩国的所有三个采样点，鸵鸟SP。 6被限制在济州岛的北部。进一步调查时，鸵鸟SP的遗传多样性。基于其序列的1在韩国显示出总共21个单倍型。假定的祖先的单倍型H3，也存在于日本和俄罗斯裔鸵鸟群中的血液。虽然韩国人群的整体人口统计历史历史。 1无法明确识别，可能是由于韩国内的不同区域人口统计模式的混合，每种鸵鸟液。 1人口以区域规模显示出特征人口模式。 jeju island ostreopsis sp。 1人口展示了与人口均衡，楚哈岛和浦群鸵鸟SP一致的信号。 1种群显示出在突然种群扩张模型中预期的分布模式。本研究的结果为更好地理解亚洲鸵鸟SP的分布和遗传结构提供了依据。 1个人群。

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