Chakraborty Oishinee, Raghunathan C
Zoological Survey of India, Andaman and Nicobar Regional Centre, Port Blair-744102, Andaman and Nicobar Islands, India.
Zootaxa. 2020 Jun 11;4790(2):zootaxa.4790.2.6. doi: 10.11646/zootaxa.4790.2.6.
Aglaopheniids were sampled from 48 survey locations in the Andaman and Nicobar Islands during September 2016 to January 2019. Seven species were encountered during the study period, of which three are first reports to India recorded from Andaman and Nicobar Islands, viz., Aglaophenia cupressina Lamouroux, 1816, Lytocarpia brevirostris (Busk, 1852) and L. delicatula (Busk, 1852). The descriptions of 4 species, viz., Gymnangium hians (Busk, 1852), Macrorhynchia philippina Kirchenpeuner, 1872, M. phoenicea (Busk, 1852) and Monoserius pennarius (Linnaeus, 1758), are provided after a taxonomic gap of 108 years from the Islands. Hydroids were observed to be growing on a variety of substrates; rocks, boulders, dead corals, polychaete tubes, ship hull and sand. Some associated fauna was catalogued as well such as the bivalve, Pterelectroma physoides (Lamarck, 1819) associated with G. hians (Busk, 1852), L. delicatula (Busk, 1852), M. phoenicea (Busk, 1852) and M. philippina Kirchenpauer, 1872. The hydroid specific nudibranch Lomanotus vermiformis Eliot, 1908 was observed on M. philippina Kirchenpauer, 1872 and an unidentified sea anemone was observed on the hydrocaulus of M. pennarius. The bathymetric distribution of the aglaopheniids were observed to be between 3-20m, with L. brevirostris and M. pennarius occurring in deeper waters, i.e., 10-20m.
2016年9月至2019年1月期间，在安达曼和尼科巴群岛的48个调查地点采集了艾氏软珊瑚。研究期间共发现7个物种，其中3个是首次在印度被记录，它们来自安达曼和尼科巴群岛，即1816年的柏树艾氏软珊瑚、1852年的短吻扁艾氏软珊瑚和1852年的纤细扁艾氏软珊瑚。对4个物种，即1852年的开口裸艾氏软珊瑚、1872年的菲律宾大艾氏软珊瑚、1852年的红大艾氏软珊瑚和1758年的单节艾氏软珊瑚进行了描述，这是自这些岛屿上次分类研究后的108年以来首次进行此类描述。观察到水螅生长在各种基质上，如岩石、巨石、死珊瑚、多毛纲动物的管、船体和沙子。还记录了一些与之相关的动物群，如与1852年的开口裸艾氏软珊瑚、1852年的纤细扁艾氏软珊瑚、1852年的红大艾氏软珊瑚和1872年的菲律宾大艾氏软珊瑚相关的双壳类动物，即1819年的管翼蛤。在1872年的菲律宾大艾氏软珊瑚上观察到了水螅特有的裸鳃类动物1908年的蠕虫形裸鳃海牛，在1758年的单节艾氏软珊瑚的水螅茎上观察到了一种未鉴定的海葵。艾氏软珊瑚的深度分布在3至20米之间，短吻扁艾氏软珊瑚和单节艾氏软珊瑚出现在较深的水域，即10至20米。
