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Tue, 3 Oct 2017 11:27:54 -0600 |
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In the transition from summer to winter bees, there are a good number
of related changes that make unravelling cause and effect a tad
complicated: reduced or interrupted incoming pollen (and nectar?),
shortened photoperiod, decreased rearing of young brood, increase in
protein in various worker tissues, hormone titer changes, change in
longevity. Maurizio in the 50s? produced long lived bees in the summer
by preventing them from rearing brood, leading to a fairly simplistic
working model. At some level, that model has good explanatory power,
even though it may not be perfectly accurate. At the crux of the whole
process is the question of what is the cue or signal for decreased
rearing of brood? That seems to be the key to the cascade of processes
that follow.
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