Variation in life history parameters in geographically isolated populations of the Colorado potato beetle

We conducted a common-garden experiment that compared fecundity, fertility, survivorship, time of development, and sex ratio for the F1 progeny of several field-collected and laboratory populations of the Colorado potato beetle from geographically isolated locations. Overall variation among the populations was relatively low, but we did detect some differences in egg-to-adult survivorship, fecundity, and age at the first reproduction. Interestingly, field population from Long Island, New York that is highly resistant to many insecticides had a female-biased sex ratio.