Oviposition preference of the diamondback moth (Plutella xylostelld) unaffected by the presence of conspecific eggs or Bacillus thuringiensis

Francis R. Groeters, Bruce E. Tabashnik, Naomi Finson, Marshall W. Johnson

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Neither toxins from Bacillus thuringiensis Berliner nor conspecific eggs deterred oviposition by the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), in laboratory choice tests. The finding that toxins did not deter oviposition by moths from a susceptible line shows that oviposition preference and larval survival were not associated in this line. Selection for larval resistance to toxins did not significantly alter oviposition preference, which rules out a strong genetic correlation between larval performance and oviposition preference. Failure of conspecific eggs to deter oviposition may not represent lack of association of preference and performance because other evidence suggests that larval performance may not be greatly affected by larval density. These results suggest that the ability of refuges to slow evolution of physiological resistance to B. thuringiensis toxins will not be magnified by an oviposition preference for untreated foliage.

Original languageEnglish (US)
Pages (from-to)2353-2362
Number of pages10
JournalJournal of Chemical Ecology
Volume18
Issue number12
DOIs
StatePublished - Dec 1 1992
Externally publishedYes

Keywords

  • Bacillus thuringiensis
  • Lepidoptera
  • Oviposition preference
  • Plutella xylostella
  • Plutellidae
  • egg-load assessment
  • preference-performance correlation
  • resistance
  • toxin

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry

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