Fig. 1.

Effect of diapause temperature and duration on: survival and colony initiation rate of queens (A), pre-oviposition period, first brood egg cells number and size (B), first worker and male emergence in the colony (C), first queen emergence and switch and competition point timing (D), total workers and males produced (E), and total progeny queens produced and mother queen longevity (F) of Bombus terrestris under laboratory conditions.