RELATIONSHIP BETWEEN BEHAVIORAL AND PHYSIOLOGICAL-RESPONSES OF PLUTELLA-XYLOSTELLA (LEPIDOPTERA, PLUTELLIDAE) LARVAE TO PERMETHRIN DEPOSITS WITHIN 2 OHIO POPULATIONS

Variation in behavioral and physiological responses to permethrin (and the relationship between the two) were examined within two Ohio populations of diamondback moth, Plutella xylostella (L.). Groups of larvae that differed in behavioral response to a graded series of permethrin droplet density were selected from each population and reared separately. Behavioral responses of the F1 progeny of each group to the same series of droplet densities were measured. The physiological response of each group was measured with a topical application bioassay. Progeny of groups selected from the Fremont population did not show significant differences in either behavioral or physiological responses; progeny of Celeryville groups showed significant differences in both types of response. Within the Celeryville population, more behaviorally responsive groups were also more physiologically susceptible to permethrin. The relationship of behavioral and physiological response could have an important effect on how behavior affects selection for physiological resistance.