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Your Position :Home->Past Journals Catalog->2012年49 No.4

Effects of nuclear polyhedrosis virus on cannibalism in Helicoverpa armigera
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Key Words:HaSNPV,cannibalism,cotton bollworm
Abstract:         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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