普通肉食螨对腐食酪螨捕食效能

THE PREDATION OF Cheyletus eruditus(Acari:Cheyletidae)ON Tyrophagus putrescentiae(Acari:Acaridae)

研究了普通肉食螨不同螨态对腐食酪螨在五个恒温状态下的功能反应。结果表明普通肉食螨不同螨态对腐食酪螨的功能反应均属于HollingⅡ型,其中雌成螨的捕食能力最强,其次是雄螨、幼若螨;在猎物密度不变的情况下,捕食螨自身密度对捕食率有干扰作用,密度升高,捕食率下降。

The predation of Cheyletus eruditus(Acari :Cheyletidae)on Tyrophagus putrescentiae (Acari:Acaridae)has been studied at five constant temputures. The results showed that all the functional response of Cheyletus eruditus on Tyrophagus putrescentiae were the Holling Ⅱ functional response. The adult female Cheyletus eruditus was the most efficient predatory stage, followed by the adult male and protonymph .The predator's density affected its preying ratio and the preying ratio decreased with the increasing predator's density.