湖南省黄鳝源胃瘤线虫生物学特性研究  

Study on Biological Characteristics of Eustrongyloides from Eel in Hunan Province

作　　者：岑静[1] 夏宁波[1] 罗旭[1] 李开微[1] 格桑西若[1] 陈丽[1] 盛晓枫[1] 刘毅[1] 刘伟[1] 

机构地区：[1]湖南农业大学动物医学院,湖南长沙410128

出　　处：《中国畜牧兽医》2014年第5期244-247,共4页China Animal Husbandry & Veterinary Medicine

基　　金：湖南农业大学"大学生创新性实验计划项目"(XCX12089);湖南省畜牧局一般项目(11245);湖南省教育厅一般项目(11C0669)

摘　　要：胃瘤线虫病是一种由寄生于鱼类、鸟类体内的线虫引起的疾病，对野生动物保护、养殖业均构成较大威胁。试验于2012年4月-2013年4月用蠕虫学剖检方法检查了58839副黄鳝内脏胃瘤线虫的感染情况，并对其感染平均丰度、虫体长度、体长与存活时间关系进行观察与分析，同时测定了黄鳝血液pH。结果显示，胃瘤线虫的平均丰度为5．45％，其中春夏季平均丰度（7．85％）大于秋冬季平均丰度（4．08％），野生黄鳝平均丰度（4．08％）明显高于养殖黄鳝平均丰度（1．10％），表明胃瘤线虫平均丰度受季节及养殖方式的影响；测量300条胃瘤线虫平均长度为49．69ram（体长范围为26．80～70．50mm），春夏季及秋冬季虫体平均长度分别为47．10、54．86mm，表明胃瘤线虫秋冬季长度整体长于春夏季；虫体长度在〈30、30～39．9、40~49．9、50～59．9、〉60mm的平均存活时间分别为2．5、3．6、4．4、5．4、9．0d，表明虫体存活时间与虫体长度呈一定的正相关；黄鳝血液pH无明显季节性变化。本试验结果可为湖南省胃瘤线虫病防制提供依据。The eustrongylidiasis caused by Eustrongylides in fish and birds, was a great threat to wildlife conservation and breeding industry. From April 2012 to April 2013, 58839 eel visceras were examined by helminthology post-mortem method. We observed and analyzed Eustrongylides＇ mean abundance, the length of the worm and relationship between length and sur- vival time. Meanwhile, we checked eels＇ blood pH. The results showed that,Eustrongylides＇ mean abundance was 5.45%; the mean abundance in spring and summer （7.85%） was higher than that in autumn and winter （3.73%）, and the mean abun- dance of wild eels （5.77%） was higher than farming eels （1.10%）, which indicated Eustrongylides＇ mean abundance was af- fected by the season and farming methods. The averge length of 300 Eustrongylides was 49.69 mm, whose length ranged from 26.80 to 70.50 ram, the length of the worm in spring and summer was 47.10 mm,and in autumn and winter 54.86 mm. It showed that the length of Eustrongylides in autumn and winter was longer than that in spring and summer; the average surviv- al time of Eustrongylides （the length less than 30, 30 to 39.9, 40 to 49.9, 50 to 59.9, more than 60 ram） were 2.5,3.6,4.4, 5.4,9.0 d, which indicated that the worm＇s survival time was in positive correlation with the length of the worm. Eels blood pH had no apparent seasonal variation. The results of the tests could provide basis for the eustrongylidiasis prevention in Hu- nan province.

关 键 词：黄鳝 胃瘤线虫 平均丰度 体长 存活时间 

分 类 号：S852.731[农业科学—基础兽医学]