Park Jinsoon, Koh Chul-Hwan, Khim Jong Seong, Ohtsuka Taisuke, Witkowski Andrzej
School of Earth and Envrionmental Sciences (Oceanography), Seoul National University, Seoul 151-742, Republic of KoreaDivision of Environmental Science and Ecological Engineering, Korea University, Seoul 136-713, Republic of KoreaBiwa Lake Museum, Oroshimo 1091, Kusatsu, Shiga 525-0001, JapanInstitute of Marine Sciences, University of Szczecin, Mickiewicza 18, PL-70-383 Szczecin, Poland.
J Phycol. 2012 Feb;48(1):186-95. doi: 10.1111/j.1529-8817.2011.01087.x. Epub 2012 Jan 10.
This article describes a new diatom genus Moreneis from the Yellow Sea sand flats on the west coast of Korea. The new genus is characterized by a unique combination of morphological characteristics, including the shape of the plastids, which have not been previously observed in diatoms. The valve morphology resembles other genera belonging to Lyrellaceae, within which we place this genus. In terms of areolae structure, Moreneis resembles Petroneis and Placoneis; however, it differs from both genera with respect to the raphe system and plastid shape. Cells of Moreneis spp. have a single large plastid appressed to the girdle of the secondary side of the valve, with two lobes extended toward the primary side of the valve. Furthermore, the unique feature of Moreneis frustules is the raphe, which has both external central and apical endings bent in opposite directions. We differentiated four taxa, which we describe as new for science. However, based on our findings, several established species from Navicula should also be formally transferred to Moreneis, including N. alpha Cleve, N. besarensis Giffen, N. epsilon Cleve, N. menaiana Hendey, N. polae Heiden, and N. quadri-undulata F. Meister. Analysis of published data revealed that species belonging to Moreneis are numerous in tropical marine littoral waters, and in moderate climate zones, especially in the western Pacific, with only a few species occurring in the Mediterranean and Atlantic.
本文描述了来自韩国西海岸黄海沙滩的一个新硅藻属——莫雷内斯藻属。该新属的特征是具有独特的形态特征组合，包括质体形状，这在硅藻中此前未曾观察到。瓣膜形态与属于Lyrellaceae科的其他属相似，我们将此属归入该科。在纹孔结构方面，莫雷内斯藻属类似于彼得罗内斯藻属和普拉科内斯藻属；然而，在脊缝系统和质体形状方面，它与这两个属都有所不同。莫雷内斯藻属物种细胞有一个单个的大质体紧贴在瓣膜次级面的带区，有两个叶向瓣膜初级面延伸。此外，莫雷内斯藻属壳套的独特特征是脊缝，其外部中央和顶端末端向相反方向弯曲。我们区分出了四个分类单元，并将其作为新物种进行科学描述。然而，基于我们的研究结果，几个来自舟形藻属的已确立物种也应正式归入莫雷内斯藻属，包括α舟形藻、贝萨伦西舟形藻、ε舟形藻、梅纳亚纳舟形藻、极地舟形藻和四波舟形藻。对已发表数据的分析表明，莫雷内斯藻属的物种在热带海洋沿岸水域以及温带气候区数量众多，尤其是在西太平洋，在地中海和大西洋只有少数物种。
