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Effect of Dyes on Body Fat and Eye Color of Ebony Pearl Boll Weevils1,2,3

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Different marking techniques for Anthonomus grandis Boheman were tested. Ebony pearl individuals were reared on larval media containing 1000 ppm of the following dyes: (I) Calco Oil Red N-1700® (2) Acridine Orange; (3) Eosin-Bluish; (4) Sudan II; and (5) Nile Blue A. Calco Oil Red N-1700 was the only dye which sufficiently dyed the eye and body fat of emerging adult weevils.

Adult ebony pearl weevils were fed adult media plugs for 6 days containing Calco Oil Red N-1700 in the media or wax covering, or media and wax covering' of plugs. Body fat of the weevils was dyed red, but the eyes were unmarked. Dye (5000 ppm) in the wax covering of plugs also dyed the body fat, but not the eye. Ability to obtain 2 different markers, body fat and eyes or body Cat only, depends upon whether the dye is fed to larvae or adults.

Document Type: Research Article

Publication date: April 1, 1972

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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