A team of researchers from the Katholieke Universiteit Leuven and CCBA Universidad Autónoma de Yucatán, reports that guard Melipona beecheii stingless bees do not confer chemicals to larvae that allow them to develop into queens. In their paper published in the journal Biology Letters, the group describes giving bee larvae a special floral oil to determine if guard bees were giving larvae chemicals to incite them into growing into queen bees.
Click here for original story, Testing of Melipona beecheii stingless bees shows guards do not choose new queen
Source: Phys.org