| 米蛾卵冷藏温度及时间对稻螟赤眼蜂质量的影响 |
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| 引用本文： | 胡晓暄,杜文梅,张俊杰,祁颖慧,阮长春.米蛾卵冷藏温度及时间对稻螟赤眼蜂质量的影响[J].吉林农业大学学报,2017,39(3). |
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| 作者姓名： | 胡晓暄 杜文梅 张俊杰 祁颖慧 阮长春 |
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| 作者单位： | 1. 吉林农业大学生物防治研究所,天敌昆虫应用工程技术研究中心,长春130118;2. 吉林省农业技术推广总站,长春,130021 |
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| 基金项目： | 吉林省重点科技攻关项目 |
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| 摘 要： | 稻螟赤眼蜂(Trichogramma japonicum Ashmead)是水稻螟虫的优势寄生蜂,为了明确米蛾卵冷藏后对稻螟赤眼蜂繁蜂质量的影响,在0,3,6,10℃4个温度和0,3,6,12,20,25,30,40 d 8个冷藏时间条件下冷藏米蛾卵,调查了稻螟赤眼蜂对冷藏米蛾卵的寄生能力、羽化及性比。结果表明:在4个温度下,稻螟赤眼蜂各指标均随冷藏时间的延长而降低,各温度下,以0℃最为敏感,米蛾卵冷藏至25 d时,稻螟赤眼蜂已不能寄生;其次为3℃,米蛾卵冷藏至25 d时,稻螟赤眼蜂寄生米蛾卵数(0.93粒)、羽化率(21.11%)和性比(0.2♀∶1♂)均显著低于未冷藏米蛾卵。6~10℃冷藏的米蛾卵繁殖稻螟赤眼蜂,各指标下降较缓慢,至12 d时,稻螟赤眼蜂寄生米蛾卵数达22~26粒,寄生后羽化率可82%,雌雄蜂比例可达6.5,显著高于其他温度。综合各指标,工厂化繁殖稻螟赤眼蜂时,米蛾卵最佳冷藏温度为6~10℃,冷藏时间为12 d。
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| 关 键 词： | 米蛾卵 冷藏温度 冷藏时间 稻螟赤眼蜂 羽化率 |
Effects of Corcyra cephalonica Egg Storage Temperature and Time on Quality of Trichogramma japonicum Ashmead |
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| HU Xiaoxuan,DU Wenmei,ZHANG Junjie,QI Yinghui,RUAN Changchun.Effects of Corcyra cephalonica Egg Storage Temperature and Time on Quality of Trichogramma japonicum Ashmead[J].Journal of Jilin Agricultural University,2017,39(3). |
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| Authors: | HU Xiaoxuan DU Wenmei ZHANG Junjie QI Yinghui RUAN Changchun |
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| Abstract: | Trichogramma japonicum Ashmead,an dominant parasitic wasp in paddy field,plays a key role in suppressing natural population of rice stem borers.The effects of cold Corcyra cephalonica eggs (0,3,6,12,20,25,30 and 40 d stored at 0,3,6 and 10 ℃) on capacity of parasitism,emergence and sex ratio were studied.The results indicated that all biological parameters decreased as storage duration increased at various temperatures.When C.cephalonica eggs were stored for 25 d at 0 ℃,the Trichogramma japonicum had no parasitic capability.When C.cephalonica eggs were stored for 25 d at 3 ℃,number of parasitized eggs (0.93),percentage of emergence (21.11％)and sex ratio (0.2 ♀ ∶ 1 ♂) were significantly lower than those of unsorted ones.However,number of parasitized eggs(22-26),percentage of emergence (more than 82％) and sex ratio (6.5 ♀ ∶ 1 ♂) were significantly higher than other treatments when parasitoids were stored for 12 d at 6-10 ℃.To conclude,for mass production of T.japonicum,optimum storage temperature of C.cephalonica eggs is 6-10 ℃,and their storage duration is 12 d. |
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| Keywords: | Corcyra cephalonica egg cold storage temperature cold storage duration Trichogramma japonicum percentage of emergence |
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