Catalog of Fly Control by Rincon-Vitova Insectaries

More catalogs by Rincon-Vitova Insectaries | Catalog of Fly Control | 17 pages | 2006-12-19

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Page 11 of Catalog of Fly Control

evaluating parasite effectiveness monitor number of adult flies a reduction in the number of adult flies is the best measure of a successful fly control program control decisions should be based on a standardized method of quantifying fly numbers baited jug traps and index cards offer two standardized methods use of other biocontrols ophyra or dump fly hydrotaea aenescens is a fly whose larva lives in manure sludge and preys on house fly larvae the adult fly doesn t bother people or animals like house flies see page 11 hister beetles carcinops pumilio are tiny 1/8 inch long beetles that eat fly eggs and larvae in moist manure release in chicken houses where the manure stays moist and warm see page 11 fly scatter bait traps count the number of flies caught per trap in a week fly activity is usually considered high if more than 250 flies are caught weekly in a trap hister beetle eating fly eggs dung beetles onthophagus spp are large scarab beetles ½ inch long that bury manure in pastures this removes the manure pile as a home for flies see page 11 use of chemical pesticides fly parasite wasp laying egg on fly pupa actual size is approximately 1/10 inch fly speck cards weekly placement of 3 x 5 inch plain index cards near fly resting areas as indicated by fly specking provide an inexpensive method for monitoring fly populations as well as a historical record of fly activity cards should be fastened flush to a surface where fly specks are concentrated in the same position at each renewal in general fly activity is considered high if each card on average has more than 50 to 100 spots in a week fly parasites are susceptible to pesticides particularly when sprays are directed at manure spray only adult flies resting on surfaces such as walls to minimize the impact on the parasites non-residual sprays work well for knocking down flies this way you keep biological control working for you and reduce the need for insecticides biological control works because the entire complex of insectary-grown and naturally occurring predators and parasites work together to break the life cycle of the fly at many different stages all natural enemies of flies are susceptible to pesticides intelligent use of broad-spectrum pesticides will reduce the need for them enjoy life with fewer flies and no pesticides assess parasitism of fly pupae fly pupae can be separated from the manure by flotation in water agitation will float the pupae to the surface pupae that are old enough to have been exposed to parasitic wasps change from reddish to dark brown up to ten percent of these will not develop into flies those yielding flies have the end of the pupal case broken off neatly cut escape holes are evidence of parasitism check 100 dark brown pupae in a week for parasitism and dead intact pupae to get parasitism rate and parasite-induced mortality rate as a horse owner i appreciate stables that control their flies without pesticides such places offer a safer and more enjoyable atmosphere for my horse and family stefan long entomologist and fly control consultant alexandra long on fancy page 10 rincon-vitova insectaries inc 2005 catalog of beneficials for fly control 800-248-2847 bugs www.rinconvitova.com