Environmental Entomology (1981) 10, 320-326

N.D.G. White and R.N. Sinha (1981)
Energy budget for Oryzaephilus surinamensis (Coleoptera: Cucujidae) feeding on rolled oats
Environmental Entomology 10 (3), 320-326
Abstract: An energy budget was determined for Oryzaephilus surinamensis (L.) reared singly on rolled oats at 30 ± 1°C and 80 ± 2% RH. The average caloric content per individual in the developmental stages were: egg, 0.07; 1st instar (L1), 0.09; L2, 0.29; L3, 0.82; L4, 1.36; pupa, 1.50; adult, 1.80 cal. The mean caloric content of a rolled oat was 74.04 cal. It was estimated that 74.3 cal/individual were ingested during an 80 day life span; 3.8 cal were lost as feces. The highest rate of oxygen consumption (138 µl/individual per day) occurred on the 8th day of the life cycle. The total energy lost through respiration by the developmental stages and adults up to 80 days old was 6.2 and 32.3 cal, respectively. The mean assimilation efficiency was 89.9% for larvae and 95.4% for adult females. Gross production efficiency was 31.3% for larvae, and 45.0% for adult females. In a comparison of cumulative energy budgets of immatures at 25°, 30° and 35°C, the highest assimilation efficiency occurred at 30°C (89.9%), and the highest gross production efficiency at 25°C (34.1%).
(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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Oryzaephilus surinamensis