Abstract
Randomly selected core samples were taken over a 3-yr period from five sample areas (the feed apron-soil interface, mound, side fences, back fences, and general lot) in pens of several beef feedlots. Our goal was to determine the abundance, from the five sample areas, of immature house flies, Musca domestica L., throughout each year. The feed apron-soil interface consistently (≥33%of the cores yielded house flies) yielded the highest numbers of immature house flies (>70% of total) in all 3 yr. House fly numbers tended to peak in mid- to late-season samples. Scheduled, concerted waste management along the feed apron should have a positive impact on house fly population reduction. Data derived from sampling along the feed apron could have predictive value in developing pest management schemes.
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