Laboratorio de Parasitología, INIBIOMA (CONICET-Universidad Nacional del Comahue), San Carlos de Bariloche, Río Negro, Argentina.
Laboratório de Ecologia Molecular e Parasitologia Evolutiva, Departamento de Zoología, Universidade Federal do Paraná, Curitiba, Paraná, Brazil.
Syst Parasitol. 2021 Apr;98(2):131-139. doi: 10.1007/s11230-021-09966-4. Epub 2021 Mar 9.
A new parasitic copepod, Ergasilus yandemontei n. sp., is described based on 10 adult females collected from the gills of the atherinid silverside Odontesthes hatcheri (Eigenmann), in Lake Pellegrini, Neuquén Province, Patagonia, Argentina. This new copepod species is characterized by having: (i) a 2-segmented endopod on leg 1; (ii) a semi pinnate seta on the terminal segment of the exopod of leg 1; (iii) a reduced leg 5 with a single seta; (iv) aesthetascs on antennule, 1 aesthetasc on the sixth segment and 1 on the fourth segment. Ergasilus yandemontei n. sp. represents the first species described from Patagonian freshwaters. Ergasilus sieboldi var. patagonicus Szidat, 1956 described from Lake Pellegrini, should be considered a synonym of the new species described herein.
一种新的寄生桡足类 Ergasilus yandemontei n. sp.，基于从阿根廷巴塔哥尼亚内乌肯省佩莱格里尼湖的 Atherinid 银汉鱼 Odontesthes hatcheri (Eigenmann) 的鳃中采集的 10 只成年雌性个体而被描述。这种新的桡足类物种的特征为：(i) 第 1 足的内肢有 2 节；(ii) 第 1 足的外肢末端节上有半羽状刚毛；(iii) 第 5 足退化，仅有一根刚毛；(iv) 触角上有感觉刚毛，第 6 节上有 1 根，第 4 节上有 1 根。Ergasilus yandemontei n. sp. 是从巴塔哥尼亚淡水描述的第一个物种。Szidat 于 1956 年从佩莱格里尼湖描述的 Ergasilus sieboldi var. patagonicus 应被视为本文描述的新物种的同义词。
