東方果實蠅之產卵偏好

THE OVIPOSITION PREFERENCE OF THE ORIENTAL FRUIT FLY, DACUS DORSALIS HENDEL

劉玉章(Yu-Chang Liu) ； 黃莉欣(Li-Hsin Huang)

《中華昆蟲》 10卷2期 (1990/06) Pp. v+159-168

https://doi.org/10.6660/TESFE.1990015

摘要

以番石榴、柑桔、檬果、蓮霧及香蕉五種果實引誘雌蟲產卵結果得知，東方果實蠅對番石榴最為偏好（57.53卵／♀），柑桔次之（52.09卵／♀），而以蓮霧最弱（19.79卵／♀）。雌蟲產卵易受易果實傷口所引誘，雌蟲較偏好於機械傷害所造成之傷口，尤喜受傷後2小時至2天間之舊傷口；未受傷害之果實反較受產卵傷害果更具引誘力；雌蟲亦可在產卵過的傷孔中重複產卵，唯較喜受傷2小時內之新鮮傷口，受傷過久或果內已有相當數量之幼蟲蛀食腐敗的果實，則不為雌蟲所喜愛。雌蟲偏好於在成熟果上產卵，果實愈成熟其誘得的雌蟲數量愈多，而產卵的數量亦愈多。本文依果實生長曲線根據果實的色澤、體積及重量，釐訂出柑桔、番石榴及檬果果實之果實成熟度等級，其中番石榴及檬果各分三個成熟度等級，柑桔分為四個等級。

關鍵字

東方果實蠅 ； 產卵偏好 ； 寄主果實

並列摘要

Five species of hostfruits, guava, mango, citrus, banana and waxapple, were used in this study for testing the oviposition preference of the oriental fruit fly. It is showed that female flies strongly prefer the guava and citrus, on which 57.53 eggs and 52.09 eggs were deposited per female within 15 days, respectively, while only 19.79 eggs were collected on waxapple. In order to oviposition, females were always attracted by the wounds of fruits which caused by the female's ovipositor insertion or by mechanical injury. The females apparently preferred the mechanical- wounded fruit on which more visiting and oviposition were made, especially on the one injured after 2 hours to 2 days. Compare with the ovipositor-wounded fruit, the female preferred rather the unwounded fruits. However, females were still attracted by and reoviposited on the ovipositor-inserted wound, especially on the recent one while was not longer than 2 hours injured. On the other hand, it had a deterrent effect to the further oviposition when fruit had already occupied by a considered number of larvae. In this study, the degree of ripeness of guava, mango and citrus fruits have been determined, it is showed the more fruit ripened the heavier fruit damaged and the higher larvae survived.

並列關鍵字

Oriental fruit fly ； oviposition preference ； host fruits