Moravec Frantisek, Nagasawa Kazuya
Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branisovska 31, 3705 Ceske Budejovice, Czech Republic.
Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima 739-8528, Japan.
Folia Parasitol (Praha). 2018 Oct 23;65:2018.016. doi: 10.14411/fp.2018.016.
Collections of parasitic nematodes of fishes from some freshwater and brackish-water localities in Honshu, Shikoku and Hokkaido, Japan, carried out in 1996-2009, yielded the following eight species: Hysterothylacium haze (Machida, Takahashi et Masuuchi, 1978) (Anisakidae), Paraquimperia sp., Pingus sinensis Hsü, 1933 (both Quimperiidae), Heliconema anguillae Yamaguti, 1935 (Physalopteridae), Rhabdochona angusticaudata sp. n., Rhabdochona zacconis Yamaguti, 1935 (both Rhabdochonidae), Ascarophis arctica Polyanskiy, 1952 (Cystidicolidae) and Eustrongylides sp. larvae (Dioctophymatidae). The new species, R. angusticaudata sp. n., described from the intestine of the Japanese eel Anguilla japonica Temminck et Schlegel in the Renjoji River, Shikoku, is mainly characterised by the presence of 14-16 anterior prostomal teeth, non-bifurcated deirids with rounded ends, the length of the left spicule (300-384 µm long), the right spicule with a dorsal barb and non-filamented eggs. The species of Paraquimperia Baylis, 1934 and A. arctica are reported from Japan for the first time. Based on light and scanning electron microscopical examinations, some new morphological data on H. haze, H. anguillae, R. zacconis and A. arctica are provided.
1996年至2009年期间，在日本本州、四国和北海道的一些淡水及咸淡水区域开展了鱼类寄生线虫的采集工作，共发现了以下8个物种：朦胧异尖线虫（Hysterothylacium haze）（牧田、高桥和增内，1978年）（异尖科）、拟奎氏线虫属（Paraquimperia sp.）、中华平氏线虫（Pingus sinensis Hsü，1933年）（均为奎氏线虫科）、鳗螺旋线虫（Heliconema anguillae）（山口，1935年）（泡翼线虫科）、窄尾瑞柏线虫新种（Rhabdochona angusticaudata sp. n.）、扎氏瑞柏线虫（Rhabdochona zacconis）（山口，1935年）（均为瑞柏线虫科）、北极蛔线虫（Ascarophis arctica）（波兰斯基，1952年）（囊变线虫科）和膨结线虫属幼虫（Eustrongylides sp.）（膨结科）。窄尾瑞柏线虫新种是在四国仁定寺河的日本鳗鲡（Anguilla japonica Temminck et Schlegel）肠道中发现并描述的，其主要特征为有14 - 16颗前口针齿、末端圆形的不分叉排泄孔、左交合刺长度（300 - 384 µm长）、具背倒刺的右交合刺以及非丝状虫卵。1934年的拟奎氏线虫属物种和北极蛔线虫首次在日本被报道。基于光学显微镜和扫描电子显微镜检查，提供了关于朦胧异尖线虫、鳗螺旋线虫、扎氏瑞柏线虫和北极蛔线虫的一些新形态学数据。
