Environmental Entomology (1983) 12, 831-834

George C. Rock and Phillip L. Shaffer (1983)
Developmental rates of codling moth (Lepidoptera: Olethreutidae) reared on apple at four constant temperatures
Environmental Entomology 12 (3), 831-834
Abstract: Developmental and survival rates of the codling moth, Cydia pomonella (L.), on apples were determined at constant temperatures of 16, 21, 27, and 32 ± 1°C by using F₁ progeny of moths collected in a North Carolina apple orchard. Survival rate was greatest at 27°C (46.7%) but did not differ significantly among the temperatures. No significant difference in developmental rates between the sexes was found. Developmental rates increased with increasing temperature, and no evidence of a decline or leveling off of the developmental rate vs. temperature curve was shown up to 32°C. By linear regression, the base threshold was shown to be 9.9°C, and 510 day-degrees (C°) was required to complete larval and pupal development. However, the developmental rate vs. temperature curve is quite nonlinear, and thus the day-degree approximation is not very accurate. The use of simplistic models of development to predict the phenology of field populations of codling moth is discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cydia pomonella