Fig. 1
From: Behavioral and molecular studies of quantitative differences in hygienic behavior in honeybees
The generation of worker bees from high and low HB (hygienic behavior) sources and their assembly into a single group for the behavioral assay. a We generated three high HB sources and three low HB sources by crossing queens with drones that derived from colonies that had high and low breeding values for HB. The HB breeding values are derived from estimates that take into account the amount of removed dead brood in an assay (pin-test [7]). b Three hundred worker bees from each of the three high and three low HB sources were individually marked and assembled into a single group to score the workers’ hygienic behavioral performance with respect to pin-treated brood cells containing dead pupae. This experiment was repeated four times with different set of worker bees