Initial Temperature for the Development of Schistosoma japonicum Larvae in Oncomelania hupensis
- VernacularTitle:日本血吸虫幼虫在钉螺体内发育起点温度的研究
- Author:
Leping SUN
;
Xiaonong ZHOU
;
Qingbiao HONG
;
Yixin HUANG
;
Guojing YANG
;
Weiping XI
;
Yuji JIANG
- Publication Type:Journal Article
- Keywords:
Schistosoma japonicum, cercaria, Oncomelania hupensis, developmental velocity, initial temperature, prepatent period
- From:
Chinese Journal of Parasitology and Parasitic Diseases
1997;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the impact of environmental temperature on the development of Schistosoma japonicum larvae within the Oncomelania hupensis. Methods Oncomelania snails, collected from the field and free of S. japonicum infection, were exposed to miracidiae of S. japonicum in a ratio of 1∶20 and raised at 30 ℃, 27 ℃, 24 ℃, 21 ℃ and 18 ℃, respectively. The prepatent period of larvae within the Oncomelania hupensis and the developmental velocity were determined, of which the relationship with the temperature was analysed. Results The average prepatent period of cercariae in snail was (128.89?16.05) d,(95.00?21.03) d,(71.93?12.74) d and (62.74?14.19) d at 21 ℃, 24 ℃, 27 ℃, 30 ℃, respectively. The regression formulation between prepatent period and temperature was y =730.68x -0.8918 (r=0.9976, P
