长江上游四川江段鲤外寄生车轮虫的研究

Studies on Ectoparasitic Trichodinids from Cyprinus carpio in the Upper Reaches of the Yangtze River,Sichuan Branch

采用活体观察和干银法对采自长江上游四川江段鲤(Cyprinus carpio)鳃上的11种外寄生车轮虫进行了形态分类学研究。借助Nikon E-600显微镜及Nikon CCD-1200照相机,运用国际间通用的"统一特定描述法"及"齿体定位描述法",对检获的车轮虫进行了科学分析。它们分别是:单型车轮虫(Trichodina uniforma Van As&Basson,1989)、异齿车轮虫(Trichodina heterodentata Duncan,1977)、急尖车轮虫(Trichodina acuta Lom,1961)、网状车轮虫(Trichodinareticulata Hirschman&Partsch,1955)、卡氏车轮虫(Trichodina kazubski Van As&Basson,1989)、适度车轮虫(Trichodi-na modesta Lom,1970)、显著车轮虫(Trichodna nobilis Chen,1963)、喙状车轮虫(Trichodina rostrata Kulmina,1968)、大型三分虫(Tripartiella macrosoma Basson&Van As,1987)、纤细小车轮虫(Trichodinella subtilis(Lom,1959)Lom&Hal-dar,1977)与周丛小车轮虫(Trichodinella epizootica(Rabbe,1950)Sramek-Husek,1953)。鲤是卡氏车轮虫、适度车轮虫和大型三分虫的宿主新记录。异齿车轮虫、急尖车轮虫、卡氏车轮虫、显著车轮虫、喙状车轮虫、大型三分虫、纤细小车轮虫、周丛小车轮虫均为四川的新记录种。

Eleven trichodinid species were obtained from Cyprinus carpio in the upper reaches of the Yangtze River,Sichuan Branch.They are Trichodina uniforma Van As & Basson,1989,Trichodina heterodentata Duncan,1977,Trichodina acuta Lom,1961,Trichodina reticulata Hirschman & Partsch,1955,Trichodina kazubski Van As & Basson,1989,Trichodina modesta Lom,1970,Trichodna nobilis Chen,1963,Trichodina rostrata Kulmina,1968,Tripartiella macrosoma Basson & Van As,1987,Trichodinella subtilis(Lom,1959) Lom & Haldar,1977 and Trichodinella epizootica(Rabbe,1950) Sramek-Husek,1953.The observations in vivo were performed and preparations made by dry silver impregnation technique were examined under the Nikon E-600 phase contrast microscope.All photomicrographs were made with the help of Nikon CCD-1200 and illustration drawings were carried out by computer software CorelDRAW 11.0 and Photoshop 8.0.All measurements are presented in μm and follow the uniform specific characteristic system proposed by Lom(1958).A detailed description of the denticles is presented in accordance with the method proposed by Van AS and Basson(1989).Cyprinus carpio is reported for the first time as the host of T.kazubski,T.modesta,T.macrosoma.T.heterodentata,T.acuta,T.kazubski,T.nobilis,T.rostrata,Tripartiella macrosoma,T.subtilis,T.epizootica are all the new records in Sichuan District.The present research offers new data for fish parasitology for healthy culture.