白城地区市售淡水鱼华支睾吸虫感染情况调查

目的]了解白城地区华支睾吸虫第二中间宿主感染情况。方法]分别从白城地区大安市、白城市和镇赉县市场购买麦穗鱼、船丁鱼、鲫鱼,草鱼、鲤鱼、鲶鱼、胖头鱼、黑鱼、河虾,采用压片法显微镜下镜检,每种鱼检出囊蚴的放在一起,采用胃蛋白酶消化法进行消化,并计算每种鱼的囊蚴感染率和每种鱼平均每100克鱼肉的囊蚴数及其成熟情况。结果]麦穗鱼、船丁鱼、鲫鱼、草鱼检出华支睾吸虫囊蚴,检出的囊蚴感染率和平均每100g的数量为:麦穗鱼33.3%,720个;船丁鱼29.6%,365个;鲫鱼10.0%,106个;草鱼8.5%,87个。成熟囊蚴所占的比率为84.9%~91.7%。结论]白城地区市售淡水鱼中可检出华支睾吸虫囊蚴,仍应加强华支睾吸虫方面的控制和宣传教育工作。

INVESTIATION ON THE COMMERCIAL FRESHWATER FISH INFECTION WITH ENCSTED METACERCARIA OF CLONORCHIS SINENSIS IN BAICHENG REGION

Objective] To find out the infection status of Clonorchis sinensis metacercariae in freshwater fish in Baicheng region. Methods] Freshwater fishes were purchased from market of Daan city, Baicheng city and Zhenlai county. Freshwater fishes were Pseudorasbora parve, Saurogobiodabryi, crucian, Ctenopharyngodon idellus, Cyprinus carpio, parasilurus asotus, Aristichthys nobilis, Dallia, astacus. Collecting infected fishes used pellet method. Infected fishes were digested using pepsin digestion method. Metacercariae infection rate and average metacercariae number in 100 gram fish of each kind of fish were cal- culated. Metacercariae mature status was observered. Results] Clonorchis sinensis metacercariae were found in Pseudorasbora parve, Saurogobiodabryi, crucian, Ctenopharyngodon idellus. Metacercariae infection rate was 33.3%, 29.6%, 10.0%, 8.5% respectively. Average metacercariae number in 100 gram fish was 720, 365, 106, 87. The rate of mature metacercariae was 84.9%-91.7%. Conclusion] Clonorchis sinensis metacercariae was detected in freshwater fish in Baicheng region. Control and education about Clonorchis sinensis shoud be reinforced.