Abstract
Abstract Fuller rose beetle eggs were obtained by allowing beetles to oviposit between layers of wax paper. Egg masses on wax paper, 0-7 days old, were randomized and placed in stainless steel screen cages (6 cm long × 18 mm diam) closed with cork stoppers. The cages contained an average of 505 eggs/each and were submerged in a water bath at several temperatures (±0.5°C) and durations as shown in the table. Posttreatment conditions were 27°C at 85% RH. Mortality counts made 1 mo after treatment consisted of fully developed embryos and hatched eggs versus undeveloped eggs. Each test was replicated 3 times. Embryos with clearly defined head capsules and body segmentations were considered fully developed.
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