Mite fauna (Acari) associated to commercial laying hens and bird nests in Vale do Taquari, Rio Grande do Sul, Brazil

The control of ectoparasites is essential for maintaining biosafety in a poultry farm. This paper aimed to analyze the mite fauna associated to abandoned nests and commercial laying hens in the towns of Lajeado and Teutonia, Vale do Taquari, Rio Grande do Sul, Brazil. Samplings were conducted from December 2010 to July 2011. A total of 11,757 mites belonging to 21 families and 31 species were found. Cheyletidae showed the highest number of species (4), followed by Blattisocidae (3 species). Dermanyssus gallinae showed the highest number of individuals (5,689), followed by Megninia gynglimura Megnin (2,175), and Chortoglyphus arcuatus Troupeau (1,488). Blattisocius tarsalis Berlese, C. arcuatus , and D. gallinae were found on traps, feathers, poultry farm nests without cages (free), and abandoned bird nests.

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