Vakani Bhavik, Nakano Tomoyuki, Kundu Rahul
Department of Biosciences, Saurashtra University, Rajkot-360005, Gujarat State, India.
Zootaxa. 2020 Jan 22;4728(2):zootaxa.4728.2.3. doi: 10.11646/zootaxa.4728.2.3.
We report the diversity, distribution and taxonomy of patellogastropod species from the entire mainland Indian coastline. A total of 77 coastal areas with rocky outcrops in the sandy shoreline, covering the entire mainland Indian coastline, were surveyed seasonally (four times a year) during December 2014 to December 2016. Coastal habitat characteristics and the diversity of all groups of limpets from the intertidal areas were recorded. Specimens were identified by external morphological shell and gill characteristics, by the colour of the foot, mantle fringe and radular characteristics. Ecological aspects like habitat preference were also used to distinguish species. Existing diagnostic characters were amended with newer characteristics emerged in our study. Seven species from two families, Nacellidae and Lottiidae, were found along the mainland Indian coastline. Each species is present with several polymorphic forms with different colour banding patterns. Our study revealed distinct variations in the radular teeth at the genus level, but less differences within genera. Patellogastropod diversity was greater along the west coast of India and only Cellana rota was available throughout the mainland Indian coastline.
我们报告了印度大陆整个海岸线笠贝腹足类物种的多样性、分布和分类情况。2014年12月至2016年12月期间，对印度大陆整个海岸线沙质海岸线上有岩石露头的77个沿海地区进行了季节性调查（每年四次）。记录了沿海栖息地特征以及潮间带所有笠贝种类的多样性。通过贝壳外部形态、鳃的特征、足部颜色、外套膜边缘和齿舌特征来鉴定标本。还利用了如栖息地偏好等生态特征来区分物种。根据我们研究中出现的新特征对现有的诊断特征进行了修正。在印度大陆海岸线上发现了来自纳氏笠贝科和石鳖科两个科的7个物种。每个物种都有几种具有不同色带模式的多态形式。我们的研究揭示了在属级水平上齿舌齿存在明显差异，但属内差异较小。印度西海岸的笠贝腹足类多样性更高，并且只有罗氏石鳖在印度大陆整个海岸线上都有分布。
