摘要
通过室内饲养彩纹猎蝽,研究其形态和生物学特征,为利用该天敌防治害虫提供基础资料.在温度(26±1)℃,光照16L∶8D,相对湿度(65±5)％的人工环境下,使用黄粉虫饲养彩纹猎蝽,观察记录其卵、若虫和成虫的形态特征、发育历期、捕食、产卵量等生物学特性,并分析其世代历期、有效积温等.结果表明:彩纹猎蝽在实验室条件下,卵期(8.50±0.74)d,若虫共5龄.成虫产卵前期(14.80±3.71)d,每雌平均产卵量(216.80±106.04)粒,成虫平均寿命(147.35±72.36)d.在实验室条件下完成1个世代的平均历期为81.38 d,所需有效积温为2 115.88日·度.该虫能够捕食草地贪夜蛾、银纹夜蛾、斜纹夜蛾、甘薯麦蛾、小菜蛾、菜青虫、土耳其扁谷盗、致倦库蚊.研究显示彩纹猎蝽在实验室环境下一年发生4代,可以捕食多种害虫,可为进一步保护和利用该天敌提供重要参考.
Abstract
The morphological and biological characteristics of Euagoras plagiatus were studied through the indoor rea-ring,which provided basic data for the study of using this natural enemy to control insect pests.Under the artificial environment of temperature being(26±1)℃,light being 16L:8D and relative humidity being(65±5)％,Tenebrio molitor was used to feed E.plagiatus.The biological characteristics of E.plagiatus,such as the morphological char-acteristics of eggs,nymphs and adults,the developmental duration,predation,and fecundity were observed and re-corded,and the generation duration and effective accumulated temperature were analyzed.The results showed that:under the laboratory conditions,the egg stage of E.plagiatus was(8.50±0.74)days,and there were five instars in the nymph stage.The pre-oviposition period of the adult was(14.80±3.71)days.The average number of eggs laid per female was 216.80±106.04,and the average life span of adults was(147.35±72.36)days.The average dura-tion of one generation under the laboratory conditions was 81.38 days,and the effective accumulated temperature was 2115.88 days·degree.E.plagialus could prey on Spodoptera frugiperda,Argyrogramma agnata,Spodoptera li-tura,Brachmia macroscopa,Plutella xylostella,Pieris rapae,Cryptolestes turcicus,and Culex quinquefasciatus.The study showed that E.plagiatus occurred four generations a year in the laboratory environment and could prey on a variety of pests,which could provide an important reference for the further protection and utilization of this natural enemy.
基金项目
中国烟草总公司福建省烟草公司项目(2021350000240010)
福建省烟草公司龙岩市公司项目(2021350800240009)
维普
万方数据