Two new marine benthic diatom species of Hippodonta (Bacillariophyceae) from the coast of China: H. nanjiensis sp. nov. and H. qingdaoensis sp. nov
Two new marine benthic diatom species of Hippodonta (Bacillariophyceae) from the coast of China: H. nanjiensis sp. nov. and H. qingdaoensis sp. nov
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中国沿海河马藻门 (Bacillariophyceae) 两个海洋底栖硅藻新种：H. nanjiensis sp.
DOI：
10.1007/s00343-020-0104-8
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发表时间：
2021
影响因子：
1.6
通讯作者：
Xu Kuidong
中科院分区：
文献类型：
--
作者：
Li Yuhang;Sun Zhongmin;Nagumo Tamotsu;Xu Kuidong
由于调查有限，对中国沿海的蹄齿类物种的多样性和分布情况知之甚少。本文报道了两个新种的详细形态和超微结构。nanjiensis sp. nov.，采自南麂列岛、东海和H.青岛虫新种，采自黄海青岛市第一海水海滩潮间带桑迪沉积物。这两个物种主要发生在潮间带的中部。H. nanjiensis具有独特的大圆形中央区。H. qingdaoensis与同类的区别在于具有独特的纹型，其中在瓣的初级侧上，中间的经顶纹中的乳晕不太发达或不存在，并且在光学显微镜（LM）下每个纹有两个乳晕。本研究扩大了我们对中国沿海河马类多样性和分布的认识。
The diversity and distribution of Hippodonta species on the coast of China are largely unknown due to limited investigations. In this paper, we report the detailed morphology and ultrastructure of two new species: H. nanjiensis sp. nov., collected from intertidal sandy sediments of Nanji Islands, the East China Sea and H. qingdaoensis sp. nov., collected from intertidal sandy sediments of the No. 1 Bathing Beach in Qingdao City, the Yellow Sea. Both species occur mainly in the middle part of the intertidal zone. H. nanjiensis possesses a unique large round central area. H. qingdaoensis differs from congeners in having a unique stria pattern, wherein the areolae in the middle transapical striae are less developed or absent on the primary side of the valve, and two areolae per stria are apparent under light microscopy (LM). This study expands our knowledge of Hippodonta diversity and distribution on the coast of China.