Tunnicliffe Verena, Breusing Corinna
Department of Biology and School of Earth & Ocean Sciences, University of Victoria, Victoria, BC, Canada. .
Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, USA. .
Zootaxa. 2022 Dec 2;5214(3):337-364. doi: 10.11646/zootaxa.5214.3.2.
Mussels of the genus Bathymodiolus Kenk & Wilson belong to the foundation fauna at hydrothermal vents in the global deep sea. In the western Pacific and Indian oceans, the three nominal taxa B. septemdierum Hashimoto and Okutani, B. brevior Cosel, Métivier & Okutani and B. marisindicus Hashimoto are currently recognized as separate species despite morphological and genetic evidence for their conspecificity. All three are listed with the International Union for Conservation of Nature Red List based on highly restricted ranges. We compile and supplement existing morphometric and molecular data to revise the Bathymodiolus septemdierum species group. We redescribe B. septemdierum as a single species with B. brevior and B. marisindicus recognized as junior synonyms. Given the exceptionally broad range of B. septemdierum, we propose removal of these three taxa from the IUCN Red List.
深海贻贝属（Bathymodiolus Kenk & Wilson）的贻贝是全球深海热液喷口的基础动物群。在西太平洋和印度洋，尽管有形态学和遗传学证据表明它们是同种，但目前三个名义分类单元——桥本和奥谷的七鳃深海贻贝（B. septemdierum）、科塞尔、梅蒂维耶与奥谷的短茎深海贻贝（B. brevior）以及桥本的印度洋深海贻贝（B. marisindicus）被视为独立物种。基于分布范围极为有限，这三种贻贝均被列入国际自然保护联盟红色名录。我们汇编并补充现有的形态测量和分子数据，以修订七鳃深海贻贝物种组。我们将七鳃深海贻贝重新描述为一个单一物种，将短茎深海贻贝和印度洋深海贻贝认定为次异名。鉴于七鳃深海贻贝分布范围异常广泛，我们建议将这三个分类单元从世界自然保护联盟红色名录中移除。
