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1.在湖南,5—10月虫卵发育,发部时间为19—31天,其它月份发育极慢或基本不发育。虫卵对低温有抵抗力,在-6℃持续2天还不能杀死全部虫卵。猪粪尿贮存25天可杀死其中的全部虫卵。连续阴雨天气可使毛蚴孵出推迟,还有一部分毛蚴不能出壳,死在卵内。对卵内一种单细胞生物作了观察。2.湖南省姜片虫的中间宿主,有尖口园扁螺和半球多脉扁螺,凸旋螺是否可作为中间宿主有待证实。前两种的自然感染率为7.5%和4.6%,人工感染率为19.2—42.4%和16.2%。 3—11月为扁卷螺活动季节,6—8月幼、中螺占优势,幼、中螺感染率大于成螺感染率。3.毛蚴主要从扁卷螺的头、颈、腹足部钻入,钻入时间一般为56—180分钟,钻入幼、中螺时间(66分钟)比成螺(102分钟)短。以每螺4—8个毛蚴的感染尖口园扁螺,感染率较高(30.8—42.4%)。由毛蚴感染至尾蚴逸出平均约需55天。还观察到雷蚴肠道内有一种棕色、黑色的“原生动物”。4.猪人工感染囊蚴后84天发育为成虫。湖南省猪感染姜片吸虫于8月初开始,8、9两月为高潮,10月下降,11月以后感染极少。5.根据湖南省猪姜片吸虫的流行病学和感染季节的研究,提出了防治本病的6条建议,其中包括7月以前为灭螺时间,十月和元月各驱虫一次。
1. In Hunan, May-October egg development, hair time 19-31 days, the other months of development is extremely slow or basically undeveloped. The eggs are resistant to low temperatures and can not kill all the eggs at -6 ° C for 2 days. Pig manure stored for 25 days can kill all of the eggs. Continuous rainy weather can hatch delayed hatchlings, there are some miracidia can not be shell, died in the egg. A single-celled organism in the egg was observed. 2. Hunan ginger zoosphere intermediate hosts, there are sharp mouth Park flat snails and hemispherical multi-spike, snail screw can be used as an intermediate host to be confirmed. The first two natural infection rates were 7.5% and 4.6%, artificial infection rates were 19.2-42.4% and 16.2%. From November to November, the activity of flat snail was active. From June to August, young and medium snail dominated. The infection rates of young and middle snails were higher than that of adult snails. 3 miracidia mainly from the flat snails head, neck, stomach and foot into the drilling time is generally 56-180 minutes into the young, the snail time (66 minutes) than the snail (102 minutes) shorter. With 4-8 miracidia per spiraea infection flathead flat snails, the infection rate is higher (30.8-42.4%). Cercariae infection by cercariae to cercariae to escape an average of about 55 days. Also observed LeiZhi intestine has a brown, black “protozoan.” Pig adult 84 days after infecting metacercaria. Hunan Province pig infected with ginger flukes beginning in early August, 8,9 two months as the climax, in October down, rarely infected after November. According to the epidemiology and infection seasons of the genus Gingeria in Hunan Province, six suggestions for the prevention and treatment of this disease were put forward, including the time to kill molluscs before July, and the deworming once in October and January.