人工繁殖白蛾黑基啮小蜂最适交配期和暴露期的选择

Journal of Nanjing Forestry University(Natural Sciences Edition)(2012)

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Abstract
以蛹蜂比为1∶100和柞蚕(Antheraea pernyi Guerin-Meneville)蛹为替代寄主繁殖白蛾黑基啮小蜂(Tetrastichus nigricoxae Yang),测定室内人工繁蜂的最适交配期和接蜂暴露期。结果表明:当小蜂羽化出蜂后交配48~72 h时,寄生率(93.3%~94.2%)、羽化率(87.5%~90.8%)和平均子代出蜂量(1 010.4~1 213.3头)等寄生指标,均高于或显著高于24 h时的值(p<0.05),极显著高于0 h和96~144 h时(p<0.01)的值;当寄主蛹暴露给寄生蜂2~3 d时,寄生率(87.5%~95.8%)、羽化率(86.7%~95.8%)和平均子代出蜂量(1 274.5~1 365.6头)等繁蜂指标也高于或显著高于其他暴露期处理(p<0.05)。综合考虑蜂龄对寄生效果的影响,选择白蛾黑基啮小蜂人工繁殖的最适交配期和暴露期分别为羽化出蜂后2 d和2~3 d。
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Key words
artificial production,exposure period,mating time,Micromelalopha troglodyta,Tetrastichus nigricoxae,Antheraea pernyi
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