The Canadian Entomologist · 1966 · 25 citations · 7 references
Life SciencesEntomologyBiological ControlInsect ConservationInsect EcologyCrop Pest InsectsInsect Life History EcologyPest ControlPesticide Impacts On InsectsReproductive Toxicity In InsectsCodling Moth DamageEmergenceEmergence RateGamma Radiation AssessmentGamma Radiation SafetyInsect Pest Life CyclesLepidopteran Pest ManagementSterile Insect Technique
Abstract Sterile male codling moths, exposed as pupae to 40 krad of gamma radiation and released in an abandoned 20-tree apple orchard for 3 years, reduced the percentage of fruits injured by mature or almost mature second-brood larvae from 4.94 to 0.05. Numbers of sterile males released, ratios of sterile to fertile males during peak emergence of first-brood moths, and numbers of overwintering larvae were: 1961 (3 DDT sprays applied) — 0, 0:1, 400; 1962 — 21,300, 8:1, 957; 1963 — 67,500, 21:1, 43; 1964 — 89,200, 715:1, 6.
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