斜纹夜蛾幼虫游泳行为初步观察

Preliminary Observation on Larva Swimming Behavior in Spodoptera litura Fabricius(Lepidoptera:Noctuidae)

在实验条件下,初步观察了斜纹夜蛾幼虫游泳行为,结果表明:(1)幼虫泳姿有侧面游泳、弹射游泳、平行游泳和仰面游泳4种姿势;(2)游泳总时间因温度不同而异;(3)仰面游泳持续时间最短,时间分配率和发生率最低。观察结果可为深入研究该幼虫游泳行为及生理机制提供参考。

Larva swimming behavior in Spodoptera litura was preliminarily observed under the laboratory conditions. The results showed:(1) side swimming, rebound swimming, parallel swimming and back swimming were observed when larva were swimming;(2) total time of swimming varied from the temperature;(3) duration time of back swimming was the least, and time budget or frequency was the lowest among different swimming behaviors. These results should provide the references for further research and physiological mechanism of larva swimming.