Morey Germán Augusto Murrieta, Rojas Carlos Alfredo Tuesta, Cachique José Carlos Zumaeta
Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Loreto-Perú, Peru.
Universidad Nacional de la Amazonía Peruana (UNAP), Iquitos, Loreto-Perú, Peru.
Syst Parasitol. 2022 Dec;99(6):683-688. doi: 10.1007/s11230-022-10056-2. Epub 2022 Jul 25.
Among Siluriformes, fishes of the family Doradidae harbor dactylogyrids from Cosmetocleithrum Kritsky, Thatcher and Boeger, 1986. Anadoras grypus (Cope) (Siluriformes, Doradidae) locally named in Peru as "rego-rego" hosts a new species of Cosmetocleithrum described herein as Cosmetocleithrum infinitum sp. n. The male copulatory organ (MCO) and vagina of the new species reveal its morphological uniqueness among members of Cosmetocleithrum. The MCO in the new species is an elongate, sclerotized sinuous tube, with 12 expanded coils, with counterclockwise orientation; the accessory piece is sclerotized, comprising a kind of cone, with a large opening at its base, with a branch in the posterior middle part and with pointed ends. The vagina is a sclerotized long, winding, coiled tube with a cone-shaped opening.
在鲇形目鱼类中，陶乐鲶科的鱼类寄生有1986年克里茨基、撒切尔和伯格描述的美饰指环虫属的指环虫。秘鲁当地名为“雷戈 - 雷戈”的安氏陶乐鲶（科普）（鲇形目，陶乐鲶科）寄生着一种新的美饰指环虫，在此描述为无限美饰指环虫新种。新物种的雄性交配器官（MCO）和阴道显示出它在美饰指环虫属成员中的形态独特性。新物种的MCO是一个细长的、硬化的蜿蜒管，有12个扩张的线圈，呈逆时针方向；附属件硬化，呈一种锥体，基部有一个大开口，后中部有一个分支，末端尖锐。阴道是一个硬化的长而蜿蜒、盘绕的管，有一个锥形开口。
