《环境昆虫学报》

作者	单位
黄燕嫦，易帝炜，宋子伟，李敦松，张古忍	(1. 中山大学有害生物控制与资源利用国家重点实验室，广州510275；2. 广东省农业科学院植物保护研究所/广东省植物保护新技术重点实验室，广州 510640)

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中文摘要:

螟黄赤眼蜂广泛应用于多种农林害虫的生物防治，常用米蛾卵进行规模化繁育。本文观察了螟黄赤眼蜂在米蛾卵中的个体发育过程。结果发现，在26℃±1℃的条件下，螟黄赤眼蜂从产卵到成虫的个体发育过程历时8 d，其中胚胎期26 h，幼虫期36 h，预蛹期48 h，蛹期84 h，在产卵后的192 h后成虫开始羽化。螟黄赤眼蜂卵为白色透明的棒状，随着胚胎发育时间的增加，其长径和短径逐渐变大，但两者之比逐渐减少；刚进入幼虫期的虫体长径与短径之比较大，虫体上下宽度基本相等，但体积随取食而快速增加；虫体出现梅花斑和米蛾卵卵壳颜色变黑是进入预蛹期的标志；蛹的头、胸和腹部明显分界，梅花斑消失，腹部二条黑带逐渐横贯整个腹背面，复眼随着时间的增加逐渐加深，最后为深红色。经过192 h的发育，螟黄赤眼蜂成虫羽化，咬破米蛾卵壳而出。

英文摘要:

Trichogramma chiloniswas commonly mass reared on Corcyra cephalonica eggs and widely used as a biological control agent against many agriculture and forestry insect pests. In this study, the individual development of T.chilonis onC.cephalonicaeggs was observed at the temperature of 26℃± 1℃.The results showed that it was taken 8 days for T.chinolis to complete the development from egg to pupa, including 26 h of embryonic development, 36 h of lava, 48 h of prepupa, 84 h of pupa, and adults emerged on day 9.The T.chilonis eggs laid in C.cephalonica eggs were pellucid white claviforma.Few changes of egg appearance were happened during embryo development, except for the expanding sizes and shrinking ratio of major axis and minor axis.The ratio of major axis and minor axis was relatively high at the beginning of larval stage whose size increased sharply with larva feeding. The pulm spots on the dorsal abdomen and C.cephalonica eggshell turning black were the typically characteristics of prepupal stage. In the pupal stage, plum spots disappeared, the compound eyes and inset body turned deep over time Adults emerged on the day 9 after the egg laying of T.chinolis.

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