(a) Learning efficiency
I acquired a dozen bumble-bee (Bombus terrestris dalmatinus) territories, for each that contains 29forty experts, from Koppert Physiological Possibilities (Berkel dentro de Rodenrijs, The netherlands). All of the professionals was indeed uniquely noted into the thorax which have numbered, coloured labels (Opalith labels; Religious Graze Kg, Germany). So it allowed people to become correctly known in both lab training studies and you may job foraging samples.
Brand new bees was indeed pre-trained to forage of 20 bicoloured, bluish and you can yellow, phony plant life during the a laboratory trip arena. The latest square, bicoloured vegetation have been constructed from a couple halves (for each and every several?24 mm): that red (Perspex Red 260) additionally the other bluish (Perspex Bluish 727). Through the pre-knowledge, all of the bicoloured vegetation was compensated which have fifty% (w/w) sucrose solution taking prior to now along with-naive bees which have an equal opportunity to associate each other tones which have prize (Raine ainsi que al. 2006b).