四川鱼类复殖吸虫的区系特点  

Studies on the Digenea Fauna from Freshwater Fishes in Sichuan Province

作　　者：马跃岗 马成伦[1,2] 

机构地区：[1]重庆市水产研究所 [2]重庆师范学院生物系

出　　处：《重庆师范学院学报（自然科学版）》1999年第2期7-18,共12页Journal of Chongqing Normal University(Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：从鱼类寄主组成，复殖吸虫种类组成和感染情况，吸虫在鱼类上感染分布特点三方面阐述了四川省鱼类寄生复殖吸虫的区系特点；并就四川与江西复殖吸虫区系，四川地质演化对区系影响及复殖吸虫对本地区渔业的影响进行了讨论和建议。This study investigates the digenea fauna in the Sichuan area in Changjang River,Minjang River etc.Species of digenea were found in Sichuan Province by the earlier authers.A total of families of digenea is 19,including the 70 species from freshwater fishes in Sichuan Province. Comparison with the digenea in Jiangxi area,some water fields in upper reaches of Changjang River,show that most species of digenea can be found in all these areas and that their distributions are usually cosmopolitan.However,the dominant species may be different in different areas,owing to the differences in environmental features.i.g Bucephalidae,Allocreadiidae,Gorgoderidae and Monorchiidae are the dominant in terms of the number of species in Sichuan area.There are some similar fauna in the composition of digenea both in Sichuan and Jiangxi areas.The composition of digenea reflects the feature of subtropicalzone.On the other hand,there are a number of special species from freshwater in Sichuan Province.These are considered faunal elements of the oriental realm of the west in Sichuan area. Factors influencing the distribution of digenea are discussed.These factors include hosts,water fields,landforms,geographical position and biological evolution etc.Among them,geographical position and biological evolution are considered to be some important factors restricting digenea distribution. At last,the influence on the fishery,owing to the incidence and intensity of infection with digenea from the freshwater fishes,is discussed.

关 键 词：复殖吸虫 区系 鱼类 四川 

分 类 号：S941.522[农业科学—水产养殖]