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Acarine and Nosema Diseases of Honeybees in Britain, 1925–47

Published online by Cambridge University Press:  10 July 2009

Guy D. Morison ,
E. P. Jeffree ,
L. Murray  and
M. Delia Allen
Guy D. Morison
Affiliation:
Enotmology and Bee Research Departements, North of Scotland college of Agriculture, Aberdeen.
E. P. Jeffree
Affiliation:
Enotmology and Bee Research Departements, North of Scotland college of Agriculture, Aberdeen.
L. Murray
Affiliation:
Enotmology and Bee Research Departements, North of Scotland college of Agriculture, Aberdeen.
M. Delia Allen
Affiliation:
Enotmology and Bee Research Departements, North of Scotland college of Agriculture, Aberdeen.
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Extract

Between 1925 and 1947, 9,929 samples of bees from Great Britain were examined for acarine and Nosema diseases. There was a significantly lower incidence of acarine disease in English samples than in Scottish ones, but a somewhat higher incidence of Nosema disease in England than in Scotland was not significant. A decrease in the incidence of acarine disease over the 22 years was highly significant in both England and Scotland, although the rate of decrease was not significantly different between the two countries.

The average incidence of acarine disease during each month of the year was at its lowest in April, May and June, while Nosema disease reached its maximum in these three months and fell to a minimum in the autumn. Data on the seasonal incidence of Nosema disease in an apiary in Scotland between 1948 and 1953 show a similar distribution to that for Great Britain. Eesults on the incidence of both diseases throughout the year are compared with those of other authors, and possible reasons for the seasonal fluctuations are discussed.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 46 , Issue 4 , January 1956 , pp. 753 - 759
Copyright
Copyright © Cambridge University Press 1956

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