Thompson S N, Mejia-Scales V
Division of Biological Control, University of California, Riverside 92521.
J Parasitol. 1989 Apr;75(2):329-32.
Biomphalaria glabrata infected with Schistosoma mansoni and maintained on an artificial diet of Spirulina alga displayed reduced growth during the 5 wk following patency. Food consumption per unit snail weight was unaffected. Infected snails also failed to lay eggs. No difference in percentage of assimilation was observed between control and infected individuals, but infected snails had significantly decreased gross conversion efficiencies. The effects of infection on nutrition of B. glabrata were similar to those observed in nutrient-deprived snails fed diets containing low Spirulina levels. Nutrient deprivation, however, did not alter conversion efficiency.
感染曼氏血吸虫并以螺旋藻人工饲料饲养的光滑双脐螺，在感染后5周内生长减缓。单位蜗牛体重的食物消耗量未受影响。感染的蜗牛也不产卵。对照蜗牛和感染蜗牛之间的同化率没有差异，但感染的蜗牛总转化效率显著降低。感染对光滑双脐螺营养的影响与在喂食低螺旋藻水平饲料的营养缺乏蜗牛中观察到的影响相似。然而，营养缺乏并未改变转化效率。
