Tobacco Hornworm:1 Marking the Spermatophore with Water-Soluble Stains2,3

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Abstract:

Water-soluble vital stains administered to adult Manduca sexta (L.) by feeding or by injection into the haemoroel were effective in marking spermatophores. However, injection was the more efficient technique and did not damage the moths. Of more than 60 stains that were screened, rhodamine B, methylene blue chloride, pararosaniline acetate, and pararosaniline hydrochloride were the only dyes which stained the spermatophore. Well-stained spermatophores were transferred by males that had been treated with rhodamine B 72 hours before the males were allowed an opportunity to mate.

Document Type: Research Article

Publication date: June 1, 1973

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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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