为了解齐齐哈尔地区市售水产品中寄生虫的感染情况,于2018年8-11月采集市售淡水鱼、软体动物、节肢动物、两栖动物等样品。鱼类标本采用直接压片镜检法查囊蚴,其他标本解剖镜检,检获的囊蚴进行形态学鉴定。共检查淡水鱼7种450尾,囊蚴总感染率为32.4%（146/450）;发现5种不同类型的吸虫囊蚴,其中4种经初步鉴定为：华支睾吸虫囊蚴、东方次睾吸虫囊蚴、横川后殖吸虫囊蚴、台湾次睾吸虫囊蚴。7种鱼类囊蚴感染率依次为拉氏秽（75.3%）、鲫鱼（42.2%）、葛氏鲈塘鳢（24.5%）、麦穗鱼（23.6%）、鲤鱼（4.7%）、白条（4.4%）、黄颡（0）。中华圆田螺、河蚌的吸虫感染率分别为8.3%（7/84）、15.0%（3/20）。黑斑侧褶蛙的吸虫感染率为42.9%（6/14）,在其肠道内发现短肠重盘吸虫和一种线虫。牛蛙、日本沼虾、螃蟹、口虾蛄的检查结果均为阴性。提示本地区市售水产品中有多种寄生虫感染,居民应注意饮食安全。

In order to know the infection status of parasite in aquatic products sold in Qiqihar, 14 species of freshwater fishes, molluscs, arthropods and amphibians were collected from this area during August to November, 2018. Fish samples were examined for trematode metacercaria by direct slide examination under microscope. The parasite species were identified under microscope. In this survey, Total 450 fishes within 7 species were examined, 32.4% of them were infected with different trematode metacercaria. Total five species of trematode metacercaria were identified including Clonorchis sinensis, Metorchis taiwanensis, Metagonimus yokogawai and Metorchis taiwanensis and one unknown. The infection rates of trematode metacercaria in 7 species of freshwater fish were Phoxinus lagowskii (75.3%), Carassius auratus (42.2%), Perccottus glenii (24.5%), Pseudorasbora parva (23.6%), Cyprinus carpio (4.8%), Hemiculter leucisculus (4.4%) and Pseudobagrus fulvidraco (0). In molluscs, the infection rates of trematode in Procambarus clarkii and Unionidae were 8.3% (7/84) and 15.0% (3/20). The total infection rate of helminth in frog Rana nigromaculata was 42.9% with trematode Diplodiscus mehrai and an unknown nematode identified in its intestine. No parasite was identified in Lithobates catesbeiana, Macrobranchium nipponense, Brachyura and Oratosquilla oratoria. The survey showed that it is common to find the helminth infections in the aquatic products sold in Qiqihar area and people and local CDC should pay attention to the food safety.