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日本三角涡虫趋食性分析

董自梅,司马应许,李小艳,陈广文*   

  1. (河南师范大学生命科学学院, 河南新乡 453007)
  • 出版日期:2017-02-10 发布日期:2017-02-10

Analysis of feeding habits in planarian Dugesia japonica.

DONG Zi-mei, SIMA Ying-xu, LI Xiao-yan, CHEN Guang-wen* #br#   

  1. (College of Life Science, Henan Normal University, Xinxiang 453007, Henan, China).
  • Online:2017-02-10 Published:2017-02-10

摘要: 借助自行设计的圆盘混合法和水槽独立法研究了日本三角涡虫(Dugesia japonica)对食物的选择趋性以及光照强度对其摄食的影响。结果表明:日本三角涡虫对5种食物的趋食性由强至弱依次为鱼脾脏>牛肝脏>蚯蚓>鸡肝脏>熟蛋黄;400 lx以下的光照强度对涡虫摄食没有影响;当光照强度达到800 lx时,对涡虫摄食有明显影响,其中96.7%的涡虫停止摄食;当光照强度增加至1000 lx时,涡虫全部停止摄食。研究结果为淡水涡虫进化生物学和行为生态学的研究提供了重要依据。

Abstract: Feeding habits of the planarian Dugesia japonica and the influence of light intensity to their eating behavior were studied by disk method and flume method. The results showed that the sitotaxis of the worms to five kinds of food was in order of fish spleen > bovine liver > earthworm > chicken liver > cooked egg yolk. Light intensity less than 400 lx had no influence on the eating behavior of the worms. A significant effect occurred when light intensity reached 800 lx, under which 96.7% of the worms stopped eating. Under 1000 lx, all of the worms completely stopped eating. The data provided important clues for the further research of evolutionary biology and behavioral ecology of freshwater planarians.