Diamondback Moth (Lepidoptera: Plutellidae) Exhibits Oviposition and Larval Feeding Preferences Among Crops, Wild plants, and Ornamentals as Host Plants

Journal of Economic Entomology
K NewmanLiette Vasseur

Abstract

Diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), is an agricultural pest with high reproductive potential, widespread distribution, and high resistance to different types of insecticides. Although diamondback moth is a common research subject, questions remain regarding its spatial and temporal host plant usage patterns and preferences within agroecosystems. We examined the adult oviposition and larval feeding preferences of the diamondback moth to assess the potential of alternate host plants as either reservoirs or trap crops. Adult females and third and fourth instars were offered multiple plant species within the plant family Brassicaceae to examine contact preferences and larval ingestion rates. Adult oviposition and larval feeding preferences were identical, with garden cress (Lepidium sativum) (L.) highly preferred, followed by wintercress (Barbarea vulgaris) (L.) and black mustard (Brassica nigra) (L.). Ingestion rates varied among tested plants, with the lowest rate on black mustard and highest on aubretia (Aubretia deltoidea) (L.). Highly preferred plant species were determined to be unfavorable for larval growth and potentially lethal to neonates, suggesting their possible use as trap crops. Und...Continue Reading

References

May 17, 2006·Trends in Ecology & Evolution·Jeremy M Davis, Judy A Stamps
Oct 2, 2012·Annual Review of Entomology·Michael J FurlongLloyd M Dosdall
May 1, 2002·Oecologia·Brian M Traw, Todd E Dawson

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Citations

Jun 4, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mubasher HussainDongliang Qiu

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