title: Larvicidal activity of endectocides against pest flies in the dung of treated cattle.
abstract: Cattle were treated with topical formulations of endectocides to assess the larvicidal activity of faecal residues against horn fly, Haematobia irritans (L.), house fly, Musca domestica L., and stable fly, Stomoxys calcitrans (L.) (Diptera: Muscidae). In laboratory bioassays, doramectin, eprinomectin and ivermectin suppressed horn fly in dung of cattle treated at least 4 weeks previously and suppressed house fly and stable fly in dung of cattle treated 1-5 weeks previously. Moxidectin suppressed horn fly in dung from cattle treated no more than one week previously and did not suppress house fly and stable fly. Results combined for the three species across two experiments suggested that, ranked in descending order of larvicidal activity, doramectin > ivermectin approximately = eprinomectin >> moxidectin.
authors: Agriculture and Agri-Food Canada, Lethbridge Research Centre, Alberta. floatek@em.agr.ca
authors: K D
authors: KD
authors: Floate
authors: R W
authors: RW
authors: Spooner
authors: D D
authors: DD
authors: Colwell
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000032:analysis; D000969:Antinematodal Agents / Q000032:analysis / Q000493:pharmacokinetics*; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control*; D004175:Diptera; D004478:Ectoparasitic Infestations / Q000517:prevention & control*; D005243:Feces / Q000737:chemistry* / Q000469:parasitology; D007306:Insecticides / Q000032:analysis / Q000493:pharmacokinetics*; D007559:Ivermectin / Q000031:analogs & derivatives / Q000032:analysis; D007814:Larva; D018942:Macrolides; D009349:Nematode Infections / Q000517:prevention & control
chemical_list: D000900:Anti-Bacterial Agents; D000969:Antinematodal Agents; D007306:Insecticides; D018942:Macrolides; D007559:Ivermectin; C101434:eprinomectin; C084101:doramectin; C027837:moxidectin