Trade-Off between Foraging Activity and Infestation by Nest Parasites in the Primitively Eusocial Bee Halictus scabiosae
Table 1
Regression functions of foraging activities of Halictus scabiosae. and : outgoing and incoming foraging activity (per nest and per 30 minutes observation session); : daytime in hours; , ambient temperature in °C; a–d: regression coefficients, : correlation coefficient. *Additional virtual values (marked with +) were introduced for the calculation of the regression function.