Abstract
In laboratory and greenhouse tests, we investigated the effects of access to sources of pollen on o÷genesis, spermatogenesis, and copulation of post-hibernation pea weevils, Bruchus pisorum (L.). Also, we described the internal reproductive systems of the male and female weevils. The male weevil is sexually mature but the female is sexually immature when leaving hibernation. Females given pea, Pisum sativum L., pollen matured sexually in ca. 18 days. Females provided a mixture of alfalfa, Medicago sativa L., and other pollen for 14 and 21 days had significantly larger ovarioles than those provided with water only. Adults copulated regardless of whether they were provided or denied access to pollen, but the frequency of copulation was about twice as great when pollen was available. Females removed from hibernation in cold storage should be provided access to pea pollen for ca. 15 days before they are used in tests of host plant resistance.
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