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我室自1974年开始应用赤眼蜂防治松毛虫试验工作。五年来在反复观察赤眼蜂的生活习性,掌握赤眼蜂繁殖技术的基础上,对培育壮蜂,提高林间寄生效能,改进繁蜂放蜂技术等方面作了一些尝试,取得一定成效。现将初步结果整理于下。 一、松毛虫赤眼蜂主要生活习性观察 1.孤雌生殖 1977年将积温200℃发育已可辨别雌雄的松毛虫赤眼蜂蛹,剖开寄主卵取出雌蛹54头,分装54指形管,羽化成虫时,供新鲜柞蚕卵让其产卵寄生。观察结果:有52头雌蜂产卵寄生,占观察数96.3％;子代数合计4614头,平均88.7头,100％为雄性;共羽化289头,羽化率6.3％。说明孤雌生殖只能产生雄的后代,且大都不能羽化。 2.交尾习性 雄蜂有多次交尾能力,观察1头自寄主卵羽化出孔的雄蜂,2小时内交尾达10次。1977年将刚自寄主卵羽化出孔的雌蜂,一头装一指形管,供新鲜卵让其寄生,共观察32头,子代羽化后检查:平均子代数65.8头,雌占85.3％,说明赤眼蜂出孔前在寄主卵壳内可以交尾。 3.产卵习性 就观察29头雌降,羽化后平均经历1小时37分钟即开始产卵;产卵经
My room since the beginning of the application Trichogramma Trichogramma test work. On the basis of repeated observation of Trichogramma habits and mastering Trichogramma multiplication techniques over the past five years, some attempts have been made to cultivate strong bees, improve inter-forest parasitism and improve beekeeping techniques, and achieved some success. The preliminary results are now sorted into the next. First, the Trichogramma Trichogramma main livelihood observation 1. Parthenogenesis In 1977 the accumulation of temperature 200 ℃ development has been able to distinguish between male and female Trichomus trichogramma pupae, cut open the host egg 54 female pupae, sub-loaded 54 fingers Tube, eclosion, for the fresh tussah eggs spawning parasitism. Observations: There were 52 females spawning parasitism, accounting for 96.3% of observations; the total number of subalgebras was 4614, with an average of 88.7 heads and 100% of males. A total of 289 females were present with a feathering rate of 6.3%. Parthenogenesis shows that male offspring can only produce, and most can not be eclosion. 2. Cross-match drowning drone has multiple mating ability to observe a host of ovaries from the host feather hole drone, 2 hours, up to 10 times. In 1977, the female bee just emerging from the main egg emergence holes installed a finger tube for fresh eggs to parasitize them. A total of 32 females were observed. After the progeny were feathered, the average number of females was 65.8 and the females accounted for 85.3% Trichogramma before the hole in the host egg shell can be mating. 3. Spawning habits on the observation of 29 female drop, feather after an average of 1 hour and 37 minutes to begin spawning; spawning