Individual study: Colony formation by queens of three bumblebee Bombus spp. after confinement in paired nest boxes, Royal Agricultural College (Uppsala), Uppland, Sweden
Hasselrot T.B. (1952) A new method for starting bumblebee colonies. Agromony Journal, 44, 218-219
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Rear declining bumblebees in captivity
In Sweden, Hasselrot (1952) induced hibernated spring queens of three bumblebee species (B. terrestris, the tree bumblebee B. hypnorum and B. lapidarius) to form colonies in 26 out of 30 wooden nest boxes. He confined them alone in two linked boxes and provided honey solution and fresh pollen, moss and cellulose nesting material.