饥饿程度对美国白蛾生长发育和繁殖的影响
Effects of starvation on the development and reproduction of Hyphantria cunea
鞠 珍1；赵 静1；丁福波2；曲建军3；李明贵1；许永玉1**
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作者单位：1山东农业大学植物保护学院 泰安 271018； 2东营市园林绿化处 东营 257091；3蓬莱市园林管理处 蓬莱 265600
中文关键词：美国白蛾，饥饿，幼虫历期，存活率，繁殖
英文关键词：Hyphantria cunea, starvation, larval duration, survival, fecundity
中文摘要：不同龄期幼虫饥饿对美国白蛾Hyphantria cunea(Drury)生长发育和繁殖影响的研究结果表明：美国白蛾低龄（2龄）幼虫短时间的饥饿对其生长发育和繁殖的影响不明显；美国白蛾中龄（4龄）幼虫饥饿2，4，6 d使美国白蛾的历期相应增长，存活率、化蛹率、羽化率、产卵量都相应降低，交配率与对照之间没有差异；老熟（6龄）幼虫短时间饥饿（4 d）的存活率、羽化率、交配率、产卵量都稍有下降；长时间饥饿（12 d）的老熟幼虫有70％左右因饥饿而提前化蛹，提前化蛹的蛹体外没有薄茧的包裹。提前化蛹的美国白蛾的羽化率、交配率均非常低，产卵量很少。
英文摘要：The effects of starvation in different instar larvae were studied on the development and reproduction of Hyphantria cunea. Short time starvation in the 2nd instar larvae had no significant effects on the development and reproduction. Twoday, 4-day and 6-day starvation in the 4th instar larvae showed the higher larval mortality, the longer duration of larval stage, and the lower ratio of pupation, eclosion and fecundity. Fourday starvation in the 6th instar larvae showed a bit lower ratio of survival, pupation, eclosion and fecundity. Twelveday starvation in the 6th instar larvae caused that 70% larvae pupated ahead without web outside, which had greatly lower ratio of eclosion and mating, and less egg amount.