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  • Title: Comparative evaluation of four registered acaricides for field control of northern fowl mites on caged laying hens.
    Author: Hall RD, Vandepopuliere JM, English LM, Jaynes W, Lyons JJ, Doisy KE, Foehse MC.
    Journal: Poult Sci; 1980 Nov; 59(11):2424-30. PubMed ID: 6780991.
    Abstract:
    Carbaryl and tetrachlorvinphos provided longer lasting control of northern fowl mites, Ornithonyssus sylviarum (Canestrini and Fanzago), than did coumaphos or malathion when the materials were applied to caged laying hens as aqueous sprays. The average duration of residual control was ca. 5 weeks for carbaryl, 4.3 weeks for tetrachlorvinphos, 3.5 weeks for coumaphos, and 2 weeks for malathion. No presumptive evidence of northern fowl mite resistance to carbaryl or tetrachlorvinphos was encountered. In contrast, malathion often failed to produce satisfactory control, and difficulty with adequate dispersion of coumaphos wettable powder was noted.
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