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核型多角体病毒感染对棉铃虫幼虫同类相残行为的影响
Effects of nuclear polyhedrosis virus on cannibalism in Helicoverpa armigera
李静雯 褚艳娜 王 琼 刘小侠 张青文
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DOI:
作者单位:中国农业大学农学与生物技术学院北京 100193
中文关键词:核型多角体病毒,自相残杀,棉铃虫
英文关键词:HaSNPV,cannibalism,cotton bollworm
中文摘要:       在研究核型角体(HaSNPV)感染对 Helicoverpa armigera(Hübner)同类相残行为影响结果显示:病棉随感度的重,容易被健康残食然死病棉虫、病棉虫和健康三者被健康残食百分率无显著差异。表明病棉虫和病虫尸体更易于被健康残食是由于体力减弱而失去反击能力不是由于毒本身影响。以健康虫、病棉为残食者的病虫为被残食者相残率无显著差异,表明病毒并未残食同类天性残食病虫的健康虫的化蛹率羽化率均低于正常健康虫,残食者为相残行为付出很高代价
英文摘要:         The effects of nuclear polyhedrosis virus infection on cannibalism in Helicoverpa armigera ( Hübner ) was evaluated under laborratoryconditions The number of infected larvae preyed on by healthy larvae increased with theprogress of the disease There was no significant difference in the percentage of dead infected larvaefrozen infected larvaeand frozen healthy larvae that were preyed on by healthy larvae This suggests that infected larvae and dead infected larvae are more likely to be cannibalized simply because they become less vigorous and less capable of defending themselves thanhealthy larvae There was no significant difference in the frequency of cannibalism of frozen infected larvae by healthylarvae and infected larvaeThis suggests that the tendency towards cannibalism is not altered by infection Cannibalism ispotentially costly The pupation and eclosion rate of healthy larvae that ate infected larvae was lower than that of those thathad not cannibalized infected larvae
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