Ruiz-Escobar Fernando, Oceguera-Figueroa Alejandro
Programa de Biología Marina, Universidad del Mar campus Puerto Ángel, 70902, Oaxaca, Mexico.
Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Tercer circuito s/n, Ciudad Universitaria, Copilco, Coyoacán. A.P. 70-153, 04510, Ciudad de Mexico, Mexico.
Syst Parasitol. 2019 Sep;96(7):575-584. doi: 10.1007/s11230-019-09872-w. Epub 2019 Jul 30.
Branchellion spindolaorum n. sp. (Hirudinida: Piscicolidae) is described based on specimens found parasitising the giant electric ray Narcine entemedor Jordan & Starks off the coast of Oaxaca, Mexico. The new species can be clearly distinguished from the other species of Branchellion Savigny, 1822 by the presence of 30 pairs of lateral branchiae and 10 pairs of pulsatile vesicles. The definition of the genus Branchellion is expanded to include species with either 30, 31 or 33 pairs of foliaceous (plate-like) lateral branchiae in the urosome. In addition, we provide for the first time for the genus, scanning electron micrographs of the secondary suckers located on the ventral surface of the posterior sucker. Additionally, partial DNA sequences of the mitochondrial cytochrome c oxidase subunit 1 (cox1) were generated and compared with homologous sequences of other species of the genus. Branchellion spindolaorum n. sp. represents the fourth species of the genus known in the Eastern Pacific and the first record of a leech parasitising N. entemedor.
斯平多拉氏布兰氏蛭新种（Branchellion spindolaorum n. sp.）（蛭纲：鱼蛭科）是根据在墨西哥瓦哈卡海岸外寄生在巨型电鳐（Narcine entemedor Jordan & Starks）身上发现的标本描述的。该新物种可通过具有30对侧鳃和10对搏动囊泡与1822年的其他布兰氏蛭属（Branchellion Savigny）物种清楚地区分开来。布兰氏蛭属的定义被扩展，以包括在尾体中具有30、31或33对叶状（板状）侧鳃的物种。此外，我们首次提供了该属位于后吸盘腹面的次级吸盘的扫描电子显微照片。另外，生成了线粒体细胞色素c氧化酶亚基1（cox1）的部分DNA序列，并与该属其他物种的同源序列进行了比较。斯平多拉氏布兰氏蛭新种是东太平洋已知的该属第四个物种，也是寄生在恩氏电鳐上的水蛭的首次记录。
