Results 211 to 220 of about 5,822 (259)

Importance of Supercooling Points in the Overwintering of the Horn Fly and Stable Fly (Diptera: Muscidae)

Journal of Medical Entomology, 1997
Supercooling points were determined for eggs, 3rd instars, pupae, newly emerged unfed adults and 3-d-old engorged laboratory reared adults of Haematobia irritans (L.) and Stomoxys calcitrans (L.). Wild nondiapausing and diapausing pupae of H. irritans also were tested. Mean supercooling points ranged from -28.0 degrees C for H.
S R, Jones, S E, Kunz
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Development of Stephanofilaria stilesi in the Horn Fly

The Journal of Parasitology, 1966
Stephanofilaria stilesi Chitwood, 1934, uses the horn fly, Haematobia irritans (L.), as an intermediate host. Filarioid larvae found in 455 of 3,707 female flies and six of 2,234 male flies collected from cattle having stephanofilariasis were morphologically identical to the immature forms of S. stilesi recovered from stephanofilarial lesions.
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The pH Tolerance of Horn Fly Larvae

Journal of Economic Entomology, 1966
In formulating artificial diets or rearing media for insect larvae, or in modifying natural larval media in attempts to regulate the insect population, the pH tolerance of the 1st-instar larvae must be determined to establish the optimum range for survival and also the conditions preventing production of larvae.
N. O. Morgan, C. D. Schmidt
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Control of the Face Fly and Horn Fly on Beef Cattle, 1982

Insecticide and Acaricide Tests, 1983
Abstract Several insecticides and application methods were evaluated Jun through Sep on 5 separate herds of beef cattle, located in Montgomery Co, Blacksburg, VA. Herd no 1 consisted of ca 20 mixed breed heifers and cows with calves, treated with a burlap backrubber and a mineral feeder type burlap facerubber, charged with 1 pt Ravap EC ...
James E. Roberts, Michael Saluta
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Efficacy of Monensin as a Cattle Feed Additive against the Face Fly and Horn Fly

Journal of Animal Science, 1982
Four groups of eight Hereford and Hereford crossbred steers were monitored for the efficacy of monensin as a feed additive against the face fly and horn fly. Groups were assigned randomly to 3-ha grass-clover pastures. Two groups were supplemented with 1.1 kg ground corn/head daily (untreated), while the remaining groups were given 1.1 kg ground corn ...
F, Herald, F W, Knapp, S, Brown, N W, Bradley   +3 more
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Identification of the cuticular hydrocarbons of the horn fly and assays for attraction

Journal of Chemical Ecology, 1981
Horn fly cuticular paraffin and monoolefin hydrocarbons were chemically identified and assayed for biological activity as attractants. The majority of the paraffins were odd-numbered, straight-chain molecules 21-29 carbons in length; much smaller amounts of even-numbered, straightchain molecules 22-28 carbons in length and methyl-branched compounds ...
J W, Mackley, D A, Carlson, J F, Butler
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Horn fly (Diptera: Muscidae) resistance to organophosphate insecticides

Veterinary Parasitology, 2001
Insecticidal ear tags impregnated with organophosphate (OP) insecticides were used each year from 1989 to 1998 at Rosepine, LA. Weekly fly counts were conducted to evaluate control efficacy of the treatments, and bioassays were conducted at least twice per year to measure fly susceptibility to OP and pyrethroid insecticides.
A T, Barros, J, Ottea, D, Sanson, L D, Foil   +3 more
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Cattle, Face Fly and Horn Fly Tests with Ear Tags, 1980

Insecticide and Acaricide Tests, 1981
Abstract Four mixed breed beef herds of cattle in Owen County were treated with either 10% Atroban ear tags or 13.7% Rabon ear tags on May 15. In Fayette County five heards of mixed breed beef herds were treated with either 8% Ectrin ear tags, 13.7% Rabon ear fags, or a 1% Rabon dustbag-1% Ravap backrubber combination treatment on May 20.
Freddie Herald, F. W. Knapp
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Control of Horn Fly (Diptera: Muscidae) in Florida with an Australian Trap

Journal of Economic Entomology, 1996
A newly developed Haematobia spp. trap is described, and results are presented from field trials to reduce populations of adult horn fly, Haematobia irritans L., on 5 dairy farms in western Florida and Alabama during the summer of 1992. We compared fly infestations on milkers subjected to trapping, versus either dry cattle on the same farm or milkers ...
Tozer, Robert Stephen, Sutherst, Robert Wilfred   +1 more
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Ovipositional Behavior of the Horn Fly (Diptera: Muscidae) in the Field

Journal of Medical Entomology, 2000
In the field, the female horn fly obtained blood meals from the bovine host before oviposition. The female flies moved to the lower portion of the hind legs as the legs were spread, and the tail was raised before excretion. Females deposited their eggs on the manure after excretion.
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