Pires, SanciaAgustín, JosaCosta, Adelino2011-08-162011-08-161999Pires, Sância; Agustín, Josa; Costa, Adelino (1999). Field assays for chalkbrood infection in colonies of Apis mellifera iberica. In Proceedings of the Apimondia'99 Congress XXXVI Congrès. Vancouverhttp://hdl.handle.net/10198/5991"Poster"Colonies with naturally mated queens and instrumentally inseminated queens from a hygienic line of Iberian honey bees (A pis mellifera iberica) were compared to colonies from a line of Iberian bees not selected for hygienic behaviour.engconference object