The aim of the present study was to explore the response behavior of males and females of different families of Calyptratae (Diptera) to two different baits (rotten liver and feces) as separate attractants. We describe the sex bias toward these baits for species of Calliphoridae, Muscidae, and Sarcophagidae and compare the general patterns of this sex bias according to the family or trophic guild. In total, 15 species of Sarcophagidae, 10 species of Muscidae, and 9 species of Calliphoridae were analyzed. A female-biased pattern was observed for most calliphorids and for all muscids, whereas a male-biased pattern was more frequent among sarcophagids. The female captures on each kind of bait were assessed as a potential indicator of potential breeding substrates of the species. Three different trophic guilds and their pattern of sex bias were compared. The results obtained allow hypothesizing on the biological traits of saprophagous species, especially on their potential breeding substrates, and assessing proper sampling methods.
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Vol. 52 • No. 3