Cross-Inoculation of the Bumble BeeBombus fervidus with the Microsporidian Nosema apis1 from the Honey Bee2

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The microsporidian Nosema apis Zander was cultivated in honey bees, Apis mellifera L. An inoculum of known spore concentration was prepared from the ventriculi of these infected bees, suspended in sugar sirup, and fed to healthy colonies of Bombus fervidus (F.). In 19 days, heavy infections and reduced activity were noted in the bumble bees. After the original inoculum was consumed, transmission of infection to newly emerging bumble bees occurred. An inoculum of known spore concentration was then prepared from the ventriculi of the infected bumble bees. When this inoculum was fed to nosema-free honey bees. a profusion of spores developed in the midguts. Identification of these spores demonstrated that the microsporidian N. apis, once considered specific to A. mellifera, can be transmitted to B. fervidus.

Document Type: Research Article

Publication date: June 1, 1967

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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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