Health effects of predatory beneficial mites and wasps in greenhouses

Et treårigt epidemiologisk studie af 579 ansatte fra 31 gartnerier undersøgte virkningen af arbejde med fire forskellige nyttedyr. Resultaterne viste tegn til, at arbejde med tripsrovmiden Amblyseius cucumeris og spinderovmiden Phytoseiulus persimilis kan give allergisk reaktion, både i blodtest og ved symptomer fra næse og øjne. Der kunne ikke konstateres allergi over for snyltehvepsen Aphidius colemani eller jordrovmiden Hypoaspis miles og der var ikke tegn til, at nyttedyrene kunne give lungesygdomme som for eksempel astma. A three-year study of 579 greenhouse workers in 31 firms investigated the effect of four different beneficial arthropods. It was shown that the thrips mite Amblyseeius cucumeris and the spider mite predator Phytoseiulus persimilis may cause allergy measured by blood tests as well as eye and nose symptoms. No effect was seen by the predator wasp Aphidius colemani nor the predator mite Hypoaspis miles and no effect on lung diseases were seen.