Isolation and preliminary identification of bacteria which are poisonous to Oncomelania hupensis
- VernacularTitle:对钉螺具有毒性作用细菌的分离及初步鉴定
- Author:
Chuanxin YU
;
Xuren YIN
;
Xiaohong YANG
;
Yinchang ZHU
- Publication Type:Journal Article
- Keywords:
Oncomelania hupensis;
Bacterium;
Toxicity
- From:
Chinese Journal of Schistosomiasis Control
1991;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To screen the bacteria and its components which are toxic to Oncomelania hupensis. Methods The samples of Oncomelania hupensis on the point of death and the soil around the snails were collected. The bacteria existing in the snails and soil were isolated and identified by using regular methods. After being fermented, the toxicity of the bacterium components including the ferment supernatant, split products and bacteria to the snail were tested by the toxicity test. Results Totally, 104 strains of bacteria were isolated from the snails and soil samples, which included Gram positive cocci or bacilli, Gram negative cocci or bacilli. The fermenting supernatant, splitting products and 10 strains of bacteria showed different level of toxicity against the snail respectively. All the fermenting supernatant of bacterium PY1-1, PY7-2, PY3-5, PY19-3, PY2-2-2, PY8-2-2, PY16-1 could kill more than 50 percent of snails. Conclusion The bacteria which are poisonous to snails have been isolated that make a good basis for identifying single toxic component against snails.
