期刊
INVERTEBRATE SYSTEMATICS
卷 35, 期 6, 页码 655-674出版社
CSIRO PUBLISHING
DOI: 10.1071/IS20078
关键词
Antarctic marine biodiversity; integrative taxonomy; species delimitation; Weddell Sea
资金
- Spanish Ministry of Economy, Industry, and Competitiveness [CTM2017-83920-P]
- ANID-PCHA/Doctorado Nacional [2017-21170438]
- Instituto Antartico Chileno (INACH) [DG_04_19]
Thouarella Gray, 1870, is a diverse genus among gorgonians of the family Primnoidae in the Antarctic and sub-Antarctic seafloor. Through integrative approaches, three new species were described, indicating potential cryptic species in the Antarctic and sub-Antarctic regions. The global diversity of Thouarella has been increased to 41 species, with 15 endemics in the Antarctic and sub-Antarctic waters, suggesting the need for integrative taxonomic frameworks and species delimitation approaches in uncovering hidden diversity in shelf benthonic macrofauna of the Southern Ocean.
Thouarella Gray, 1870, is one of the most speciose genera among gorgonians of the family Primnoidae (Cnidaria : Octocorallia : Anthozoa), being remarkably diverse in the Antarctic and sub-Antarctic seafloor. However, their diversity in the Southern Ocean is likely underestimated. Phylogenetic analyses of mitochondrial and nuclear DNA markers were integrated with species delimitation approaches as well as morphological colonial and polyps features and skeletal SEM examinations to describe and illustrate three new species within Thouarella, from the Weddell Sea, Southern Ocean: T. amundseni sp. nov., T. dolichoespinosa sp. nov. and T. pseudoislai sp. nov. Our species delimitation results suggest, for the first time, the potential presence of Antarctic and sub-Antarctic cryptic species of primnoids, based on the likely presence of sibling species within T. undulata and T. crenelata. With the three new species here described, the global diversity of Thouarella has increased to 41 species, 15 of which are endemic to the Antarctic and sub- Antarctic waters. Consequently, our results provide new steps for uncovering the shelf benthonic macrofauna's hidden diversity in the Southern Ocean. Finally, we recommend using an integrative taxonomic framework in this group of organisms and species delimitation approaches because the distinctions between some Thouarella species based only on a superficial examination of their macro- and micromorphological features is, in many cases, limited.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据