IMPACT OF GLOBAL WARMING ON TRANSMISSION OF SCHISTOSOMIASIS IN CHINA Ⅲ RELATIONSHIP BETWEEN SNAIL INFECTIONS RATE AND ENVIRONMENTAL TEMPERATURE
- VernacularTitle:全球气候变暖对中国血吸虫病传播影响的研究Ⅲ钉螺感染率与环境温度的关系
- Author:
Leping SUN
;
Xiaonong ZHOU
;
Qingbiao HONG
;
Guojing YANG
;
Yixing HUANG
;
Weiping XI
;
Yuj JIANG
- Publication Type:Journal Article
- Keywords:
Schistosoma japonicum;
Miracidia;
Infection;
Oncomelania snail;
Critical temperature
- From:
Chinese Journal of Schistosomiasis Control
1989;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the impact of environmental temperature on the infection of miracidia of Schistosoma japonicum to Oncomelania snails, and to estimate the lowest critical temperature for infection of snails with miracidia. Methods Oncomelania snails free of S.japonicum were collected from field,and exposed to miracidia at the ratio of 1∶20 under the different temperatures, such as 5,6,8,10,15,20℃.Snails were dissected to check if infected after exposured and kept in 25℃ for another 70 days. Results The infection rate of snails were 0,0.92,1.43,2.40,8.96,17.39% under the temperature of 5,6,8,10,15,20℃, respectively. The relationship between snail infection rate and temperature for infection was showed in the regression formulation of y=0.0622x 2-0.4035x+0.6703 (r=0.9988,P
