乌蔹莓鹿蛾的生物学特性

乌蔹莓Cayratia japonica(Thunb.)Gagn.是一种多年生攀援性恶性杂草,对绿篱、草坪、观赏灌木危害较大。乌蔹莓鹿蛾Amatasp.是一种以乌蔹莓为食料的单食性昆虫,以老熟幼虫在残枝落叶上作茧越冬,翌年5月上中旬化蛹,中下旬羽化,每头雌蛾平均产卵块3个,每卵块有卵几十粒至100粒不等,平均每块含卵42粒,卵期7～9天,幼虫分5龄,历期14～18d,蛹期10～14d。在江苏扬州1年可发生不完全的4代。幼虫对乌蔹莓各器官的偏嗜性程度为:花蕾>叶>果。乌蔹莓鹿蛾对乌蔹莓有明显的控制作用。

Biological characteristics of Amata sp. on the weed Cayratia japonica

Cayratia japonica (Thunb.) Gagn., a perennial despicable weed, causes great damage to green hedge, lawn and ornamental by climbing onto them. Amata sp. is a monophagous insect feeding only on C. japonica. Its matured larva overwintered on the withered leaf or stem of plants by making cocoons, and pupated in the first ten days to the middle ten days of May. The moth emergence peak was from the middle ten days to the last ten days of May. A female laid 3 egg lumps on the average, each containing about 42 eggs. The stages of egg, larva and pupa were about 7～9 days, 14～18 days and 10～14 days, respectively. It had four generations per year in Yangzhou, east China, but the fourth one was incomplete. The preference order of Amata sp. to different organs of the host plant was bloom>leaf>fruit. The results also showed that Amata sp. was an effective agent to control C. japonica.