STUDIES ON QUANTITY OF CERCARIAE SHEDDING FROM ARTIFICIAL INFECTED SNAILS
- VernacularTitle:人工感染钉螺尾蚴得量的研究
- Author:
Wanquan HUA
;
Jianrong DAI
;
Yousheng LIANG
;
Ming XU
;
Yongliang XU
;
Yuanding JIANG
- Publication Type:Journal Article
- Keywords:
Schistosoma japonicum cercariae;
Artificial infected snails;
Shedding cercariae;
Cercariae quantity
- From:
Chinese Journal of Schistosomiasis Control
1992;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the Schistosoma japonicum cercariae collected method and the quantity of cercariae obtained from a great quantity artificial infected snails. Methods In laboratory condition, Oncomelania snails were infected with schistosome miracidia. Sixty days post-infection all snails were divided into 7 shares. Cercariae shed from 1 share snails every day and the number of all shedding days were 40. Cercariae shed from snails were collected with low-velocity centrifuge and the cercariae sediment were weighted. Results One thousand and nine hundred g snails bred for 120 days post-infection, the infection and survival rates were 36. 00% and 51. 58%. Cercariae col-lected were 10. 5 g from 40 days collection. Cercariae quantity of shedding from 1 000 positive snails per day was 0. 257 4 g.
