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首页> 外文期刊>The Biological Bulletin >Genetic Relationships (RAPD-PCR) Between Geographically Separated Populations of the 'Cosmopolitan' Interstitial Polychaete Hesionides gohari (Hesionidae) and the Evolutionary Origin of the Freshwater Species Hesionides riegerorum
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Genetic Relationships (RAPD-PCR) Between Geographically Separated Populations of the 'Cosmopolitan' Interstitial Polychaete Hesionides gohari (Hesionidae) and the Evolutionary Origin of the Freshwater Species Hesionides riegerorum

机译：“世界性”间质多毛He属（Hesionides gohari）（Hesionidae）的地理分离种群与淡水物种Hesionides riegerorum的进化起源之间的遗传关系（RAPD-PCR）

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In an analysis of the population genetics of the tiny meiofaunal polychaete Hesionides gohari, the RAPDPCR method was applied to 49 specimens from 7 collecting sites far apart on three continents: French Atlantic coast, Mediterranean (Majorca, Giglio, Crete), Red Sea, Indian Ocean (Phuket), and U.S. Atlantic coast (Folrida). In the band patterns produced with 14 arbitrary decamer primers, 496 genetic characters were detected. Genetic distances between the H. gohari populations vary between 0.55 and 0.70. The data were evaluated by three cluster programs; in the almost congruent phenograms, three clades were found with high bootstrap values: (1) European Atlantic-Mediterranean-Red Sea, (2) Indian Ocean, (3) Western Atlantic. In all cluster analyses, Hesionides riegerorum from a U.S. east coast river system is shown as geneticall nearest to the Florida specimens of H. gohari, making it most probable that this freshwater species of the genus originated from a Western Atlantic H. gohari population. The genetic distances detected between the H. gohari specimens from the three continents are almost identical to those found between morphological similar interstitial polychaete species paris. Thus, the degree of genetic consistency is considered not to be high enough to corroborate the notion of a cosmopolitan distribution pattern, but rather suggests that the three clades represent different species.
机译：在对微小的半角形多毛He Hesionides gohari的种群遗传学进行分析时，将RAPDPCR方法应用于三大洲相距遥远的7个采集点的49个标本：法国大西洋沿岸，地中海（马略卡岛，吉廖，克里特岛），红海，印度海洋（普吉岛）和美国大西洋沿岸（福里达（Folrida））。在由14个任意的decamer引物产生的条带模式中，检测到496个遗传特征。 Gohari种群之间的遗传距离在0.55和0.70之间变化。数据由三个集群程序评估;在几乎完全一致的谱图中，发现了三个具有较高自举值的进化枝：（1）欧洲大西洋-地中海-红海，（2）印度洋，（3）西大西洋。在所有聚类分析中，来自美国东海岸河系的Hesionides riegerorum被显示为最接近佛罗里达gohari样本的遗传基因，这使得该属的淡水物种最有可能来自西部大西洋gohari种群。在来自三大洲的戈氏嗜血菌标本之间检测到的遗传距离几乎与形态相似的间质多毛种巴黎之间发现的遗传距离相同。因此，认为遗传一致性的程度不足以证实国际大都市分布模式的概念，而是暗示这三个进化枝代表不同的物种。

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