Sugashima Marine Biological Laboratory, Graduate School of Science, Nagoya University, Sugashima, Toba, Mie 517-0004, Japan,
Centre for Marine & Coastal Studies, Universiti Sains Malaysia 11800 USM, Penang, Malaysia.
Zoolog Sci. 2023 Aug;40(4):308-313. doi: 10.2108/zs220057.
A new fish leech, sp. n., is described based on specimens parasitizing the gills of the short-tail stingray, (Hutton, 1875), collected from Japanese waters. The new species can be distinguished from other congeners by having: i) pulsating vesicles emerging from posterior base of branchiae, one pair per somite; ii) dorsal white spots, not arranged in longitudinal row; and iii) blackish body. A phylogenetic tree based on partial sequences of the mitochondrial cytochrome oxidase subunit I gene from the new species and other piscicolid worms showed that the new species is sister to Savigny, 1822. This is the first record of Savigny, 1822 from Japanese waters.
本文基于从日本水域采集的寄生在短尾黄貂鱼（Hutton，1875）鳃上的标本，描述了一种新的鱼蛭，种名。该新种可通过以下特征与其他近缘种区分开来：i）从鳃的后基部长出的搏动泡，每个体节一对；ii）背部的白色斑点，不成纵行排列；iii）身体黑色。基于新种和其他鱼类蛭形动物的线粒体细胞色素氧化酶亚基 I 基因的部分序列构建的系统发育树表明，该新种与 Savigny，1822 为姐妹群。这是 Savigny，1822 从日本水域的首次记录。
