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STUDIES ON AMERICAN FOUL BROOD OF BEES: THE RELATIVE PATHOGENICITY OF VEGETATIVE CELLS AND ENDOSPORES OF BACILLUS LARVAE FOR THE BROOD OF THE BEE
Author(s) -
TARR H. L. A.
Publication year - 1937
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1937.tb05040.x
Subject(s) - brood , biology , spore , larva , botany , endospore , honey bee , zoology
SUMMARY Vegetative cells of Bacillus larvae have not produced American foul brood in healthy nuclei even when B dose almost 3000 times greater than an inoculum of spores of this organism capable of causing the disease has been sprayed over the developing brood. A very much smaller inoculum of the spores of B. larvae is effective in producing American foul brood when the developing larvae of healthy nuclei are sprayed directly with them than when they are fed in syrup to the bees.