Details

Autor(en) / Beteiligte

• Sun, Le-ping
• Zhou, Xiao-nong
• Hong, Qing-biao
• Huang, Yi-xin
• Yang, Guo-jing
• Xi, Wei-ping
• Jiang, Yu-ji

Titel

Initial temperature for the development of Schistosoma japonicum larvae in Oncomelania hupensis

Ist Teil von

• Zhongguo jishengchongxue yu jishengchongping zazhi, 2003, Vol.21 (5), p.303

Ort / Verlag

China

Erscheinungsjahr

2003

Quelle

MEDLINE

Beschreibungen/Notizen

• To study the impact of environmental temperature on the development of Schistosoma japonicum larvae within the Oncomelania hupensis. 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 degrees C, 27 degrees C, 24 degrees C, 21 degrees C and 18 degrees C, 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. 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 degrees C, 24 degrees C, 27 degrees C, 30 degrees C, respectively. The regression formulation between prepatent period and temperature was y = 730.68x(-0.8918) (r = 0.9976, P < 0.01). And the regression formulation between developmental velocity of S. japonicum larvae in snail and temperature was y = 0.0235ln(x) -0.0639 (r =