臺灣稻縱捲葉蟲天敵之調查
Other Title
A Survey on Natural Enemies of the Rice Leaf Roller in Taiwan
Journal
中華農業研究
Journal Volume
32
Journal Issue
3
Pages
286-291
Date Issued
1983-09-11
Date
1983-09-11
Author(s)
陳健忠
邱瑞珍
Chien-Chung Chen
Shui-Chen Chiu
Abstract
本研究自民國70 年7 月至72 年1 月在本省13 個地區之稻田調查稻縱捲葉蟲天敵，共採得天敵25 種，包括21 種寄生性昆蟲，2 種病原菌及2 種捕食性蜘蛛。寄生性天敵中以毛小蜂科之Trichogramma chilonis與小繭蜂科之Apanteles cypris在稻田中發生最為普遍。另發現12 種重複寄生蜂寄生於小繭蜂，寄生率約33.2%。本蟲越冬於稻田雜草上之幼蟲，被寄生率較在稻田中者為高。在二期稻作田間，寄生蜂之棲群變動與稻縱捲葉蟲各蟲期之發生情況有關。
A survey on the natural enemies of the rice leaf roller, Cnaphalocrocis medinalis, was conducted at 13 sites in Taiwan from July 1981 to January 1983. In all, 25 species of natural enemies, including 21 parasitoids, 2 pathogens, and 2 predacious spiders were collected. Among these parasitoids, Trichogramma chilonis and Apanteles cypris were found more abundant in paddy fields. Twelve hyperparasitoids were reared from para-sitic braconids of almost 33.2% of parasitism. Particularly higher rates of prasitism were found to larvae feeding on winter weeds than on rice plants. The population of parasitic Hymenoptera changed in direct correlation with different stages of the rice leaf roller in the 2nd rice crop.
Publisher
農業試驗所
Type
journal article
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