Black soldier ßies, Hermetia illucens L., are a common colonizer of animal wastes.However, all published development data for this species are from studies using artiÞcial diets. This study represents the Þrst examining black soldier ßy development on animal wastes. Additionally, this study examined the ability of black soldier ßy larvae to reduce dry matter and associated nutrients in manure. Black soldier ßy larvae were fed four rates of dairy manure to determine their effects on larval and adult life history traits. Feed rate affected larval and adult development. Those fed less ration daily
weighed less than those fed a greater ration. Additionally, larvae provided the least amount of dairy manure took longer to develop to the prepupal stage; however, they needed less time to reach the adult stage. Adults resulting from larvae provided 27 g dairy manure/d lived 3Ð4 d less than those fed
70 g dairy manure. Percentage survivorship to the prepupal or adult stages did not differ across
treatments. Larvae fed 27 g dairy manure daily reduced manure dry matter mass by 58%, whereas those
fed70gdailyreduceddrymatter33%.BlacksoldierßylarvaewereabletoreduceavailablePby61Ð70%
and N by 30Ð50% across treatments. Based on results from this study, the black soldier ßy could be
used to reduce wastes and associated nutrients in conÞned bovine facilities.