Reinvestigation of Causative Agents of Gnathostomiasis in Mainland China.

我们于1989年10月至11月和1990年10月在中华人民共和国长江流域东南部地区进行了淡水鱼幼颌口病的调查。1989年在上海、镇江、南京、九江和南昌五个地区进行了调查。山海县，包括昆山、天山湖、清浦、南汇。在这些地区采集到的鱼类有乌鳢（110），中华白鲑（24）和鲶（3）。总共检查了137条鱼。将鱼的肌肉解剖成小块并切片。将这些切片置于玻璃板之间并在解剖显微镜下检查。将来自4或5条鱼的内脏混合，均质化并在37 ° C下在人工胃液中消化过夜。在肌肉检查中，从4只C中回收了4只包囊幼虫。argus。通过消化内脏，共获得34条幼虫。这38人按身体分为3组 ...更多信息 长度分别为0.58-0.86 mm（A组）、1.12-2.61 mm（B组）和4.86 mm和4.86 mm（C组）。A组为第三期早期的小幼虫5头。大多数（32只幼虫）属于B组，其中20只感染了两只大鼠。C组有1头晚期幼虫。光镜和扫描电镜显示A、B组具有G. hispidum和C组G. 1990年，我们对洪泽湖和太湖两个湖泊的鱼类进行了调查。其中乌鳢22尾，鲤鱼8尾，鲫鱼83尾，黄鳝103尾，达氏红？27尾，鲢鱼4尾，尼罗罗非鱼10尾，江鱼90尾，昌卡棘头鱼34尾，麦穗鱼157尾，泥鳅14尾，北京副？1尾。鱼的总数为553。从2种鱼类的内脏中共获得17条仔鱼，其中C. argus和M.阿不思从其中一条C. argus。这些幼虫分属A、B组，鉴定为G.本文对43只猫进行了粪便检查和尸体解剖，以调查猫的成年G.在洪泽地区发现的棘孢属植物。但未发现虫卵和蠕虫。少

We investigated the prevalence of larval gnathostomes in freshwater fishes in south east area of the Yangtze Valley, the People's Republic of China, from October to November in 1989 and 1990.In 1989, investigations were carried out at 5 districts, Shanghai, Chenchiang, Nanching, Chiuchiang and Nanchang. Shanhai district involved Kunshan, Tienshanhu, Chingpu and Nanhui. Fishes collected in these districts were Channa argus (110), Siniperca chuatsi (24) and Silurus asotus (3). Total numbers of fishes examined were 137. Muscles of the fishes were dissected into small pieces and sliced. These slices were placed between glass plates and examined under a dissecting microscope. Viscera from 4 or 5 fish were mixed, homogenized and digested in respective group in artificial gastric juice at 37^ﾟC overnight. In muscle examination, 4 encysted larvae were recovered from 4 C. argus. Thirty-four larvae in total were obtained by digesting the viscera. These 38 were divided into 3 groups by their body … More length, 0.58-0.86 mm (group A), 1.12-2.61 mm (group B) and 4.86 mm and 4.86 mm (group C). Group A contained 5 small larvae which were the early third-stage. The majority (32 larvae) belonged to group B, 20 of which were infected to two rats. Group C had one larva which was the advanced third-stage. Light and scanning electron microscopy revealed that group A and B had characteristics of G. hispidum and group C that of G. spinigerum.In 1990, we investigated fishes in the two lakes, Hongtze-Hu and Tai-Hu. Fishes examined were Channa argus (22), Cyprinus carpio (8), Carassius auratus (83), Monopterus albus (103), Erythroculter dabryi (27), Hypophthalmichthys molitrix (4), Tilapia nilotica (10), Abbotina rivilaris (90), Acanthorhodeus chankaensis (34), Pseudorasbora parva (157), Misgurnus anguillicaudatus (14), Parabramis pekinensis (1). Total numbers of fishes were 553. Totally 17 larvae were obtained from viscera of 2 fishes, C. argus and M. albus. One larva was obtained from muscle of one C. argus. These larvae belonged to group A and B and were identified as G. hispidum.Fecal examination and autopy were made in 43 cats for investigating the prevalence of adult G. spinigerum in Hongtze district. However no eggs and adult worms occurred in them. Less