Effect of management strategies on arthropod communities in the colonies of rosy apple aphid, Dysaphis plantaginea Passerini (Hemiptera: Aphididae) in south-eastern France

•Organic orchards had the lowest aphid populations and the highest natural enemy ones.•Natural enemies were more diverse and abundant in IPM than in conventional orchards.•The most common predator groups were Coccinellidae, Forficulidae, and Syrphidae.•Parasitoids were significantly more abundant in organic orchards in 2009.•There were significantly more ants in conventional than in organic orchards in 2009.