Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany.
Inland Fisheries Ireland, Dublin, Ireland.
J Fish Biol. 2020 Apr;96(4):905-912. doi: 10.1111/jfb.14279. Epub 2020 Feb 26.
The European river lamprey Lampetra fluviatilis and the European brook lamprey Lampetra planeri (Block 1784) are classified as a paired species, characterized by notably different life histories but morphological similarities. Previous work has further shown limited genetic differentiation between these two species at the mitochondrial DNA level. Here, we expand on this previous work, which focused on lamprey species from the Iberian Peninsula in the south and mainland Europe in the north, by sequencing three mitochondrial marker regions of Lampetra individuals from five river systems in Ireland and five in southern Italy. Our results corroborate the previously identified pattern of genetic diversity for the species pair. We also show significant genetic differentiation between Irish and mainland European lamprey populations, suggesting another ichthyogeographic district distinct from those previously defined. Finally, our results stress the importance of southern Italian L. planeri populations, which maintain several private alleles and notable genetic diversity.
欧洲七鳃鳗 Lampetra fluviatilis 和欧洲鳗鲡 Lampetra planeri（第 1784 块）被归类为配对种，其特征是具有明显不同的生活史但形态相似。先前的工作还表明，这两个物种在线粒体 DNA 水平上的遗传分化有限。在这里，我们扩展了之前的工作，该工作主要集中在伊比利亚半岛南部和欧洲大陆北部的七鳃鳗物种上，对来自爱尔兰的五个水系和意大利南部的五个水系的 Lampetra 个体的三个线粒体标记区域进行了测序。我们的结果证实了先前确定的物种对遗传多样性模式。我们还表明，爱尔兰和欧洲大陆的七鳃鳗种群之间存在显著的遗传分化，这表明存在另一个与先前定义的不同的鱼类地理区。最后，我们的结果强调了保持多个特有等位基因和显著遗传多样性的意大利南部 L. planeri 种群的重要性。
