Thuller, R.H.C. Malaspina, O. Bueno, O.C. Chaud-Netto, J. Number of ovarioles in workers descendent from crossings between africanized and italian honeybees, Apis mellifera L.: comparison among backcrosses and ancestors colonies Subjects--Topical Terms: AbelhaApis MelliferaHibridacaoOvarioCruzamento Animal