01856nas a2200205   4500008004100000245019500041210006900236300001200305490000700317520103800324653001701362653001701379653001401396653001501410653002501425100002501450700002201475700001501497856013801512       2001                        eng d00aA comparison of the development and survival of the dung beetle, Onthophagus taurus (Schreb.) when fed on the faeces of cattle treated with pour-on formulations of eprinomectin or moxidectin0 acomparison of the development and survival of the dung beetle On  a155-1680 v993 aFaeces voided by 1-year old cattle at 3–70 days after treatment with a pour-on formulation of moxidectin had no detectable effects on development or survival of the common dung beetle Onthophagus taurus. In contrast, faeces voided by cattle treated with a pour-on formulation of eprinomectin were associated with high juvenile mortality during the first 1–2 weeks after treatment. Increased mortality also occurred among newly emerged beetles fed on faeces collected 3 days after eprinomectin treatment and there was evidence of suppressed brood production among those that survived. This effect was still apparent even after insects fed for a further 10 days on the faeces of untreated cattle. A model simulating the effects of drug residues on dung beetle populations suggests that in the absence of immigration a single treatment of eprinomectin is capable of reducing beetle activity in the next generation by 25–35%. Effects are likely to be greatest when treatment coincides with emergence of a new generation of beetles.10aDung beetles10aeprinomectin10aModelling10amoxidectin10aPour-on formulations1 aWardhaugh, Keith, G.1 aLongstaff, B., C.1 aMorton, R.  uhttps://scarabnet.myspecies.info/comparison-development-and-survival-dung-beetle-onthophagus-taurus-schreb-when-fed-faeces-cattle-tre