【摘要】 在实验室条件下,亚非草蛉的平均发育历期为:卵期3.1天,幼虫8.9天,成虫寿命雌虫101.7天、雄虫61.8天,产卵前期8.4天。每雌虫平均产卵量400.3粒。最大产卵量746粒。产卵高峰期为羽化后的16—24天。亚非草蛉对湿度的适应范围较广,但幼虫的死亡率与湿度的关系大。 亚非草蛉幼虫一生捕食柑桔潜叶蛾幼虫数平均为149.1头,其日捕食量随龄期的增大而增加。温度对草蛉幼虫的捕食效应具有显著的影响,在35℃时达到最高的捕食效应,而在15℃以下和40℃以上,则受到明显的限制。湿度对草蛉捕食潜叶蛾幼虫的影响呈Iogistic曲线。草蛉对潜叶蛾幼虫密度的功能反应属HollingⅠ型反应。草蛉幼虫对其自身密度的功能反应可用Watt模型模拟。草蛉对潜叶蛾幼虫的捕食作用率随捕食者个体间的相互干扰作用的增加而下降,两者之间的关系随草蛉幼虫数的增加呈幂函数下降曲线。 田间观察及室内试验结果表明,亚非草蛉是柑桔潜叶蛾的一种重要的捕食性天敌。更多还原

【Abstract】 The life history and the predation efficiency of Chrysopa boninensis was studied under laboratory condition. The mean duration of the eggs required 3.1 days to hatch, the 1st instar lasted 3.2 days, the 2nd 2.4 days, and the 3rd 3.3 days, giving a larval stage of 8.9 days. The pupal satge lasted 9.2 days. Males lived a mean of 61.8 days and females a mean of 101.7 days. The pre-oviposition period averaged 8.4 days. A mean of 400.3 eggs was laid by each female, the maximum being 746 eggs. Females laid the greatest number of eggs during the period from 16 - 24 days after emergence. C. boninensis was well adapted to wide variety of relative humidity and only the percentage of cocooning was affected by humidity.An average of 149.1 larvae of the citrus leaf-miner, Phyllocnistis citrella, were consumed with each green lacewing larva, with the increase of age of larvae the predation capacity was gradually increased. The optimum temperature for the predation efficiency is 35℃, under 15℃ and over 40℃, it was very low. The result can be described by the following equation: Na = 0.0105775(r-35)2+8. 1907336The effect of humidity on the predation efficiency can be described by using Logistic curve:The funtional response of the green lacewing to citrus leaf-miner was the Holl-ing ’s II type, which can be desribed by using Holling ’s disc equation:Na =1.1756671N/(1+0.1689855N)Mutual interference affected the predation efficiency of C. boninensis. The funtional response to itself density can be described by using Watt’s equation:A = l0.6905696p-0.1091787 and the predation rate was.E = 0.7622331p-0.4811209更多还原