鼻栖登氏桡足虫，新物种（桡足纲：管吻亚目：鱼虱科），一种寄生于西南大西洋的斯氏扁鲨（诺曼，1937年）嗅囊的寄生虫。

Dendrapta nasicola n. sp. (Copepoda: Siphonostomatoida: Lernaeopodidae) a parasite from the olfactory sacs of Bathyraja scaphiops (Norman, 1937) in the South Western Atlantic.

作者信息

Irigoitia Manuel M, Taglioretti VerÓnica, Timi Juan T

机构信息

Universidad Nacional de Mar del Plata/UNMdP, Instituto de Investigaciones Marinas y Costeras/IIMyC, Facultad de Ciencias Exactas y Naturales, Laboratorio de Ictioparasitología, Funes 3350 (7600) Mar del Plata, Buenos Aires, Argentina.

出版信息

An Acad Bras Cienc. 2020 Oct 19;92(suppl 2):e20180933. doi: 10.1590/0001-3765202020180933. eCollection 2020.

DOI:10.1590/0001-3765202020180933

PMID:33084748

Abstract

During a parasitological survey of the olfactory sacs of 21 species of Rajiformes (Chondrichthyes) from the Southwestern Atlantic Ocean, copepods referable to Dendrapta Kabata (1964) (Siphonostomatoida: Lernaeopodidae) were found parasitizing the cuphead skate Bathyraja scaphiops (Rajiformes: Arhynchobatidae). Morphological analyses using both light and electron microscopy revealed that they belong to a new species. It can be easily distinguished from its congeners by the ratio between lengths of posterior process and trunk (1:0.8), the large to width ratio of trunk (1:0.7) and the armature of the antennule (1, 1, 5 + 1 aesthete). Dendrapta cameroni longiclavata is raised to full specific status, as Dendrapta longiclavata n. comb. Kabata & Gusev, 1966.

摘要

在对来自西南大西洋的21种鳐形目（软骨鱼纲）的嗅囊进行寄生虫学调查期间，发现了可归为登氏桡足亚科（1964年）（管颚亚目：鱼虱科）的桡足类动物寄生在杯头鳐Bathyraja scaphiops（鳐形目：无吻鳐科）身上。使用光学显微镜和电子显微镜进行的形态学分析表明它们属于一个新物种。它可以通过后突起与躯干的长度比（1:0.8）、躯干的长宽比（1:0.7）以及小触角的刚毛排列（1、1、5 + 1感觉器）很容易地与同属物种区分开来。卡梅伦氏登氏桡足长突亚种被提升为完整的物种地位，即长突登氏桡足虫新组合。卡巴塔和古谢夫，1966年。