Jurberg P, Barbosa J V, Rotenberg L
Instituto Oswaldo Cruz, Departamento de Biologia, Rio de Janeiro, Brasil.
Mem Inst Oswaldo Cruz. 1988 Jan-Mar;83(1):41-6. doi: 10.1590/s0074-02761988000100006.
This work examines the role of behavior in the survival of Biomphalaria glabrata exposed to 25, 50, 75 and 100 mg l-1 of Phytolacca dodecandra. Time-lapse cinematography was used to quantify accurately the following parameters: (a) frequency of exits from the solution, (b) time spent out of the solution and (c) time elapsed until the first exit from the solution. These behavior patterns were statistically compared between surviving snails and those which later died. The proportion of surviving snails leaving the liquid medium was significantly higher than that of dying snails. In addition, the surviving group spent significantly more time out of the solution than the group which died, except for the 100 mg l-1 concentration. However, no significant difference was detected in the time elapsed until the first exit from the solution. It can be concluded that both the tendency to leave the P. dodecandra solutions, and the time spent out of them, contributed significantly to snail survival. Molluscicide bioassays should take into account the possibility that some behavior patterns of planorbids might contribute to the protection of the snails.
本研究考察了光滑双脐螺暴露于25、50、75和100毫克/升垂序商陆溶液时行为在其存活中的作用。采用延时摄影精确量化以下参数：(a) 从溶液中出来的频率，(b) 离开溶液的时间，以及 (c) 直到首次离开溶液所经过的时间。对存活蜗牛和后来死亡的蜗牛之间的这些行为模式进行了统计学比较。存活蜗牛离开液体介质的比例显著高于死亡蜗牛。此外，除了100毫克/升浓度组外，存活组离开溶液的时间显著长于死亡组。然而，在直到首次离开溶液所经过的时间上未检测到显著差异。可以得出结论，离开垂序商陆溶液的倾向以及在溶液外停留的时间对蜗牛的存活有显著贡献。杀螺剂生物测定应考虑到扁卷螺的某些行为模式可能有助于蜗牛保护的可能性。
