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Subject:	Seasonal cycles
From:	Pete B <[log in to unmask]>
Reply To:	Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:	Mon, 17 Jun 2019 09:50:00 -0400
Content-Type:	text/plain
Parts/Attachments:	text/plain (16 lines)

Hi all
We haven't discussed this in a while, but I stumbled on this, which touches upon the relation between colony activity and photoperiods.

An automated system is described for continuous recording of sound emission by honeybee (Apis mellifera)
colonies as a measure of activity. Colonies were monitored throughout the year. Output of sound, with respect
to both amplitude and duration, was greatest in summer, declined to a low level in autumn, and ceased by
December, resuming in mid-January. Colonies from which light was excluded during the winter re-.established
their normal seasonal pattern at the same time as those exposed to the natural photoperiod.

Journal of Apicultural Research 24(3): 176-183 (1985)

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