TY - JOUR
T1 - Behavioral and physiological responses of susceptible and resistant diamondback moth larvae to Bacillus thuringiensis
AU - Schwartz, J. M.
AU - Tabashnik, B. E.
AU - Johnson, M. W.
PY - 1991/11
Y1 - 1991/11
N2 - 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. 1991 The Netherlands Entomological Society
AB - 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. 1991 The Netherlands Entomological Society
KW - Bacillus thuringiensis
KW - Mechanism of resistance
KW - Plutellidae
KW - diamondback moth
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U2 - 10.1111/j.1570-7458.1991.tb02410.x
DO - 10.1111/j.1570-7458.1991.tb02410.x
M3 - Article
AN - SCOPUS:0026330696
SN - 0013-8703
VL - 61
SP - 179
EP - 187
JO - Entomologia Experimentalis et Applicata
JF - Entomologia Experimentalis et Applicata
IS - 2
ER -