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Simpson, J. | 1969The maximum sizes of 83 colonies varied greatly, the biggest colony being five times the size of the smallest. Many of the colonies that failed to grow big stopped growing quite early in the summer without losing their laying queens. This sugges[...]
article/chapitre/communication
C. Butler ; Simpson, J. | 1956When old (12-28 days) or young (1-5 days) virgin queens were introduced directly (without caging) to colonies from which old or young virgin queens had just been removed, it was much easier to introduce a queen to a colony from which a similar q[...]
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J. Free ; Simpson, J. | 1963Honigbienenvölker wurden im Winter aus ihren Stöcken genommen und in galvanisierten Eisenbehältern (Tanks) Temperaturen zwischen 20 und ?39° C ausgesetzt. Das Kohlendioxyd der aus den Behältern abgesogenen Luft wurde absorbiert und gewogen. Die [...]
article/chapitre/communication
Simpson, J. | 1963The experiments described lead to the conclusion that this saliva comes from the labial glands, and not from the mandibular glands, as has sometimes been supposed. The mandibular glands have no mechanical connection with chewing, and their outle[...]
