An optimized method for the generation of AFLP markers in a stingless bee (Melipona quadrifasciata) reveals a high degree of intracolonial genetic polymorphism Gustavo R. Makert, Robert J. Paxton and Klaus HartfelderApidologie, 37 6 (2006) 687-698DOI: https://doi.org/10.1051/apido:2006043