榕透翅毒蛾室内饲养研究

Study on Indoor Rearing Technique of Perina nuda

为探索榕透翅毒蛾Perina nuda室内饲养技术,为其防治技术研究提供基础,分析榕透翅毒蛾初孵幼虫对不同寄主植物的选择性,并在温度(25±1)℃、相对湿度65%~75%、光周期14 L∶10 D条件下,调查利用细叶榕Ficus microcarpa作为食料植物室内饲养榕透翅毒蛾的发育历期和发育状况。结果表明:榕透翅毒蛾初孵幼虫最喜好取食细叶榕,其次分别为垂叶榕F.benjamina、琴叶榕F.pandurata、菩提榕F.religiosa、黄葛榕F.virens和对叶榕F.hispida;室内饲养榕透翅毒蛾完成1代雌虫需42.34天,雄虫需43.43天,卵期平均6.42天;幼虫7龄,幼虫期平均22.09天;预蛹1~3天,蛹期5~8天;雌成虫存活4~12天,雄成虫存活2~11天。卵孵化率为95.67%,化蛹率为87.78%,羽化率为93.67%,雌雄性比为1∶1.26;雌蛾的产卵量为80~484粒;室内连续饲养3代,种群未出现退化现象。因此,该研究的技术方法可以得到大量发育良好、虫龄一致的榕透翅毒蛾虫源,适合榕透翅毒蛾的大量繁殖。

To explore the indoor rearing technology of Perina nuda,and provide the basis for the research of its control technology.The selectivity of 1st instar larval of P.nuda to different host plants was analyzed.Under the conditions at(25±1)℃and 65%-75%RH ina 14 h photoperiod,the development period and development status of P.nuda were investigated by using Ficus microcarpa as a food plant.The results showed that 1st instar larval of P.nuda preferred to eat F.microcarpa,followed by F.benjamina,F.pandurata,F.religiosa,F.virens and F.hispida.It took 42.34 days for the female and 43.43 days for the male for one generation,and the average egg stage was 6.42 days.The larvae reached 7 instars,with an average duration of 22.09 days.The prepupal stage lasted for 1 to 3 days and the pupal stage lasted for 5 to 8 days.Female adults live for 4 to 12 days and male adults live for 2 to 11 days.The hatching rate was 95.67%,the pupation rate was 87.78%,the emergence rate was 93.67%,and the ratio of female to male was 1∶1.26.One female moth lays 80 to 484 eggs.There was no degradation in biological characteristics after 3 rearing.Therefore,P.nuda reared by the technique of this study was found full-grown and homogeneous growth age.This rearing technique is suitable for the mass rearing of P.nuda.