2.2.5.1. Traps to estimate worker presence

  • Honey traps, consisting of at least 50 ml of liquid honey on small plate, are positioned in the area surrounding the mating station (see the BEEBOOK paper on miscellaneous methods (Human et al., 2013) for more information on using honey traps to estimate worker presence and colony density.
  • Alternatively, dark brood combs can be boiled in water in order to attract bees by the intensive and specific smell.
  • The traps are regularly checked for the presence of worker honey bees. The total testing time should be not less than 3 h. With regard to common flight distance and speed of honey bee workers (Park, 1923; von Frisch, 1967), the continuous control duration on a single trap should not be less than 15 min.