Preliminary Report Concerning Factors Related to Certain of the Growth Phases of Bacillus Larvae

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Little work has been done on the growth phases of Bacillus Larvae, the cause of American foulbrood. In the past, forty-eight hours incubation of cultures has been considered sufficient to demonstrate absence or presence of vegetative growth on artificial culture media. The present investigation has demonstrated that within certain lower limits, as yet not definitely determined, the smaller the seeding of spores of Bacillus Larvae on a given culture medium, the longer is the incubation period necessary to obtain germination and vegetative growth. This may account for discrepancies between reports of cultures made of scales from combs subjected to sterilization processes, and apiary results.

Document Type: Research Article

Publication date: April 1, 1930

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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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