Abstract
AlthoughPlutella xylostella (L.) is a worldwide pest of cruciferous crops, relatively little is known about its oviposition behaviour. This study was undertaken to provide necessary information about mechanisms involved inP. xylostella host selection. Four oviposition behaviours were described. Moths were given artificial substrates treated with water, sinigrin, orBrassica napus (cv. Westar) squashes, combined withB. napus volatiles and/or grooves in the substrate. No eggs were deposited in the absence of olfactory and gustatory stimuli. Moths given gustatory but not olfactory stimuli deposited similar numbers of eggs but spent significantly more time performing olfactory-related behaviours. Conversely, moths given olfactory but not gustatory stimuli did not oviposit.SSubstrate grooves did not influence egg numbers but appeared to influence egg location. The order in which oviposition behaviours occurs and the relative importance of stimuli type are discussed.
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Justus, K.A., Mitchell, B.K. Oviposition site selection by the diamondback moth,Plutella xylostella (L.) (Lepidoptera: Plutellidae). J Insect Behav 9, 887–898 (1996). https://doi.org/10.1007/BF02208976
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DOI: https://doi.org/10.1007/BF02208976