Enterobacteriaceae islated from honey bees,Apis mellifera,treated with 2,4-D and antibiotics

Klebsiella pneumoniae, Shigella sp., Enterobacter cloacae, Escherichia coli, Enterobacter hafniae, Arizona sp., Enterobacter aerogenes, Serratia liquefaciens, and Citrobacter sp. were isolated from the intestinal contents of honey bees, Apis mellifera, which were obtained either from untreated colonies, from colonies fed the herbicide 2,4-D, or from colonies fed a combination of oxytetracycline and fumagillin. Antibiotics depressed the growth of Enterobacteriaceae; 2,4-D had little effect on the enteric microflora of bees.