|Title:||赤眼卵寄生峰Trichogramma chilonis之生態及產卵習性||Other Titles:||Ecological Studies on an Egg Parasitoid, Trichogramma chilonis with Special Reference to Ovipositional Habits||Authors:||陳健忠
|Issue Date:||9-Jun-1985||Publisher:||農業試驗所||Journal Volume:||34||Journal Issue:||2||Start page/Pages:||207-212||Source:||中華農業研究||Abstract:||
本研究在民國71 年至72 年問在本所稻田進行赤眼卵寄生蜂Trichogramma chilonis之田間調查與觀察，得知該蜂在稻田之寄主以稻縱捲葉蟲（Cnaphalocrocis medinalis）最為主要，其自然寄生率平均約為52.9 %，羽化率約為72.0%，多在稻叢間活動，其活動盛期通常在正午至傍晚。雌雄性比約為2.38 : 1 。卵齡1 至3 天之稻縱捲葉蟲卵其被寄生數及寄生蜂羽化數均無顯著差異。但在飼育容器中，該蜂棲群密度小於2 對／7000cm3 時其寄生數則會降低。
A survey on the hosts of the egg parasitoid, Trichogramma chilonis was conducted at Wangfeng, Taichung in 1982-1983. Six new hosts of the parasitoid were recorded and the rice leaf roller (Cnaphalocrocis medinalis) was the most important one in paddy fields. The percentage of parasitism of natural occurrence averaged 52.9%, and with 72.0% of parasitoids emerged from the parasitized eggs.
The chilonis always showed more active after noon time and majority of them were found in, but not above the rice canopy. Longevity of the female parasitoids averaged 4 days, and sex ratio of female to male in the field was about 2.38 : 1. Number of host eggs parasitized by two pairs of the parasitoid and the percent of parasitoid emergence showed no difference within the first three days. Percentage of the host egg parasitism in cages would decline when the density of parasitoid was less than 2 pairs per 7 × 103 cm3.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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