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Reinvestigation of Causative Agents of Gnathostomiasis in Mainland China.

中国大陆颚口虫病病原体的再调查。

基本信息

批准号：
01044111
负责人：
ISHII Yoichi
金额：
$ 3.07万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01044111/
关键词：
Surveys Gneathostoma Fresh water fishes cats Mainland China The valley of the Yang-tze Experimental infection Infection behavior

项目摘要

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

本文于1989年和1990年10 - 11月对长江东南地区淡水鱼中颌口幼虫的流行情况进行了调查。1989年在上海、陈江、南京、中江和南昌5个区进行了调查。山海区涉及昆山、天山湖、青浦和南汇。在这些地区收集到的鱼类分别是银鲑（110条）、翘尾鳜（24条）和石斑鱼（3条）。检查的鱼类总数为137条。鱼的肌肉被切成小块并切片。这些切片放在玻璃板之间，在解剖显微镜下检查。将4、5只鱼的内脏分别混合、匀浆，并在37^每周一次的人工胃液中消化过夜。肌肉检查中，从4条银腹螺中检出4条成囊幼虫。通过消化内脏共获得34条幼虫。38只按体长分为0.58 ~ 0.86 mm （A组）、1.12 ~ 2.61 mm （B组）、4.86 ~ 4.86 mm （C组）3组。A组小幼虫5只，为早期三期幼虫；B组占多数（32只），其中20只感染2只大鼠。C组幼虫1只，为晚期第三期。光镜和扫描电镜显示，A组和B组具有棘草的特征，C组具有棘草的特征。1990年，我们对红泽湖和太湖的鱼类进行了调查。检获鱼类有银鲑（22）、鲤鱼(8)、鲫鱼（83）、白鳝（103）、大红鱼（27）、小眼鱼(4)、尼罗罗非鱼（10）、河豚（90）、长卡棘鱼（34）、小伪鱼（157）、鳗尾鱼（14）、北京拟鱼(1)。鱼的总数为553条。从argus和M. albus两种鱼类的内脏中共获得17条幼虫。从1只银孔线虫的肌肉中获得1只幼虫。这些幼虫分别属于A、B组，鉴定为海蛾。对43只猫进行了粪便检查和尸体解剖，调查了虹泽区成年棘毛鼠的流行情况。但未发现虫卵和成虫。少