Cryptic diversity in the genus Croisettea (Kallymeniaceae, Rhodophyta) from Hawaiian mesophotic reefs
Cryptic diversity in the genus Croisettea (Kallymeniaceae, Rhodophyta) from Hawaiian mesophotic reefs
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DOI：
10.1080/00318884.2022.2096823
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发表时间：
2022-07-31
期刊：
影响因子：
1.6
通讯作者：
Sherwood, Alison R.
中科院分区：
文献类型：
--
作者：
Cabrera, Feresa P.;Huisman, John M.;Sherwood, Alison R.
最近对夏威夷红叶片物种多样性的调查已经从夏威夷中光珊瑚生态系统中获得了几个Kallymeniaceae标本。我们结合形态和线粒体COI-5 P和质体rbcL系统发育分析表明，这些标本通常被确定为Kallymenia广义形态的基础上广泛的神秘的多样性。这些分析解决了四个独特的遗传谱系的夏威夷分类群在属克鲁瓦塞特，这都是限制在较低的中光深度（c。60-150米）。Croisetea目前包括三个描述的物种，分布在北大西洋，印度洋和南太平洋以及地中海。Croisetea是夏威夷群岛的一个新记录属，将其地理分布范围扩大到北太平洋。该属现已扩大到包括七个物种，包括以前描述的分类群以及四个新的夏威夷分类群（C。kalaukapuae sp. nov.，C. haukoaweo sp. nov.，C. nov.和C. pakualapa sp. nov.）。夏威夷克鲁瓦塞特种的已知分布仅限于其模式产地周围的地区。虽然这种模式暗示在一个显着程度的地方性，无论是在珊瑚礁区和岛屿之间的深度梯度，它也与有限的采样组，这表明，更多的物种，更准确的分布范围，仍然有待检测不仅在夏威夷，而且在世界各地。
Recent investigations into the species diversity of red blades in Hawai'i have yielded several specimens of Kallymeniaceae from Hawaiian Mesophotic Coral Ecosystems. Our combined morphological and mitochondrial COI-5P and plastid rbcL phylogenetic analyses indicated widespread cryptic diversity among those specimens commonly identified as Kallymenia sensu lato based on morphology. These analyses resolved four unique genetic lineages of Hawaiian taxa in the genus Croisettea, which are all restricted to the lower mesophotic depths (c. 60-150 m). Croisettea currently includes three described species distributed in the North Atlantic, Indian and South Pacific Oceans, and the Mediterranean Sea. Croisettea is a new genus record for the Hawaiian Islands, expanding its biogeographic range to the North Pacific. The genus has now been enlarged to include seven species comprising previously described taxa as well as four new Hawaiian taxa (C. kalaukapuae sp. nov., C. haukoaweo sp. nov., C. ohelouliuli sp. nov. and C. pakualapa sp. nov.). The known distributions of the Hawaiian Croisettea species are restricted to areas around their type localities. Although this pattern hints at a remarkable degree of endemicity, both across depth gradients in a reef area and among islands, it is also linked to a limited sampling of the group, suggesting that additional species, and more accurate distributional ranges, remain to be detected not only in Hawai'i but also worldwide.