亮腹釉小蜂之雌性內生殖器官、卵吸收及產卵調節能力

Abstract

亮腹釉小蜂(Tamarixia radiata (Waterston))卵形成方式屬自生應變式策略。為瞭解不穩定棲所、缺乏適齡寄主環境下該蜂之適應性，乃利用隔離寄主與解剖方式在室內觀察雌蜂內生殖器官、卵吸收及產卵調節能力等。結果得知在25℃定溫下、祇供食純蜂蜜、無寄主柑橘木蝨(Diaphorina citri Kuwayama)之條件下，亮腹釉小蜂可藉卵吸收之方式維持原來或相近之繁殖力達10~20天，而在15℃定溫下，其產卵調節期雖可延長為30、40天，但繁殖力銳減。 Egg production of the eulophid wasp, Tamarixia radiata (Waterston), belongs to autogenous synovigenic strategy. Observations on female internal reproductive organs, oosorption and oviposition-regulating capability of T. radia ta by vivisection and deprivation host in the laboratory were conducted to study its adaptation ability when suitable instar hosts were scarce under unstable habitats. The results showed that at 25℃, with honey as food and deprived host (Diaphorina citri Kuwayama), T. radiata could synchronize with its host by oosorption for 10 20 days without or with little effect on its reproduction. At 15℃, with honey as food and deprived host, the wasps extended oviposition-regulating period to 30～40 days, but decreased reproduction sharply.