Two new species of poecilostomatoid copepods symbiotic on the venomous echinoid Toxopneustes pileolus (Lamarck) (Echinodermata) from Vietnam

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• 作者：Balu Alagar Venmathi Maran ; Il-Hoi Kim ; Olga A. Bratova…
• 刊名：Systematic Parasitology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：94
• 期：2
• 页码：227-241
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Zoology; Animal Systematics/Taxonomy/ Biogeography; Animal Anatomy / Morphology / Histology; Agriculture; Animal Ecology; Life Sciences, general;
• 出版者：Springer Netherlands
• ISSN：1573-5192
• 卷排序：94

文摘

Two new coexisting species of crustacean copepods (Poecilostomatoida) belonging to the echinoid-specific genera Mecomerinx Humes, 1977 (Pseudanthessiidae) and Clavisodalis Humes, 1970 (Taeniacanthidae) found associated with the venomous flower urchin Toxopneustes pileolus (Lamarck) (Echinodermata: Echinoidea: Toxopneustidae) in the South China Sea (Vietnam) are described. The diagnostic features of Mecomerinx ohtsukai n. sp. are: (i) three setae and one aesthetasc on the first segment of antennules; (ii) relatively long caudal ramus; (iii) elongated terminal segment of the antenna; and (iv) two claws on the terminal segment of antenna slightly unequal in length. The taeniacanthid copepod Clavisodalis toxopneusti n. sp. is distinguished from all seven known congeners by having two-segmented endopod of the legs 2–4 and four setae on the distal endopodal segment of the leg 1. This is the first report on copepods associated with echinoids of the genus Toxopneustes Agassiz and the first finding of Mecomerinx as well as taeniacanthid copepods in the South China Sea associated with echinoids.