Behavioral and physiological responses of susceptible and resistant diamondback moth larvae to Bacillus thuringiensis

J. M. Schwartz, Bruce E Tabashnik, M. W. Johnson

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

To determine whether field-selected resistance of diamondback moth (Plutella xylostella L.) (Lepidoptera: Plutellidae) to Bacillus thuringiensis is based on behavioral or physiological adaptation, we measured mortality, consumption, and movement of larvae from a susceptible and a resistant colony when placed on untreated and B. thuringiensis treated cabbage. Colonies did not differ in mortality, consumption, or movement on untreated cabbage. However, for a given amount of consumption of treated cabbage, resistant larvae had lower mortality than susceptible larvae, demonstrating that resistance had a physiological basis. The movement patterns could not account for the differences between colonies in survival. Resistant larvae did not avoid B. thuringiensis more than did susceptible larvae. Thus, we found no evidence for behavioral resistance.

Original languageEnglish (US)
Pages (from-to)179-187
Number of pages9
JournalEntomologia Experimentalis et Applicata
Volume61
Issue number2
DOIs
StatePublished - Nov 1991
Externally publishedYes

Fingerprint

Plutella xylostella
physiological response
behavioral response
Bacillus thuringiensis
moth
insect larvae
larva
cabbage
larvae
mortality
behavioral resistance
Plutellidae
Lepidoptera
consumption

Keywords

  • Bacillus thuringiensis
  • diamondback moth
  • Mechanism of resistance
  • Plutellidae

ASJC Scopus subject areas

  • Insect Science

Cite this

Behavioral and physiological responses of susceptible and resistant diamondback moth larvae to Bacillus thuringiensis. / Schwartz, J. M.; Tabashnik, Bruce E; Johnson, M. W.

In: Entomologia Experimentalis et Applicata, Vol. 61, No. 2, 11.1991, p. 179-187.

Research output: Contribution to journalArticle

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