A study of species biology on a brown alga Scytosiphon lomentaria in Japan

物种是理解生物多样性的基本单位。但是，我们有时会遇到物种边界不明确的物种。Scytosiphon lomentaria是一种褐色的轮虫，分布于世界各地的冷、暖沃茨，被公认为单一种。本研究对S.来自日本的lomentaria。结果表明，日本S. Lomentaria至少包括三个种，其中两个种的亲缘关系很近，在实验室中可以进行杂交。

Species is a fundamental unit for understanding of biodiversity. But, we sometimes encounter species whose species boundary is unclear. Scytosiphon lomentaria is a brown alga that is distributed in cold and warm waters worldwide and is recognized as a single species. In this study, molecular analyses of DNA sequences of some genes and cross experiments were carried out in S. lomentaria from Japan. The results suggested that Japanese S. lomentaria includes three species at least and that two species of them are very closely related and are able to cross between them in laboratory.