The Influence of Field Food Sprays on the Egg Production Rate of Chrysopa carnea 13

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Abstract
Egg production rates were obtained, under controlled laboratory conditions, for Chrysopa carnea females collected from alfalfa field plots, where the adults had fed on either naturally-occurring foods or various artificial food sprays. These field collected adults then were fed only a sucrose solution in the laboratory. Females field-fed a nutritionally complete food spray responded by producing eggs at a higher rate than those feeding on sugar alone and at comparable rates with those feeding on naturally-occurring foods, i.e., honeydew and/or pollen. The intensity of attraction and egg production of C. carnea to artificial food sprays was found to be greatly modified by seasonal changes in the quality and quantity of naturally-occurring foods and the numbers of resident adults in the vicinity of the food sprays.

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