Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Engineering
Field Efficacy Of Diphacinone Grain Baits Used To Control The California Ground Squirrel, J. A. Baroch
Field Efficacy Of Diphacinone Grain Baits Used To Control The California Ground Squirrel, J. A. Baroch
Proceedings of the Seventeenth Vertebrate Pest Conference 1996
Diphacinone treated oat groats were effective in reducing populations of California ground squirrels (Spermophilus beecheyi) by more than 84%. Two concentrations of active ingredient (0.005% and 0.01%) were compared, as well as two application methods: spot baiting and bait stations. Squirrel activity on test plots was assessed before and after bait applications using visual counts and active burrow counts. There was good correspondence between results of the two activity indices. There was no significant improvement in efficacy provided by the higher concentration of diphacinone. Bait consumption was much lower on bait station plots. Squirrel carcasses were found on …
The Distribution And Significance Of Anticoagulant-Resistant Norway Rats (Rattus Norvegicus) In England And Wales, 1988-95, Alan D. Macnicoll, Gerard M. Kerbms, Nicola J. Dennis, J. Erica Gill
The Distribution And Significance Of Anticoagulant-Resistant Norway Rats (Rattus Norvegicus) In England And Wales, 1988-95, Alan D. Macnicoll, Gerard M. Kerbms, Nicola J. Dennis, J. Erica Gill
Proceedings of the Seventeenth Vertebrate Pest Conference 1996
Between 1988 and 1995 populations of rats on agricultural premises were sampled to investigate the distribution of anticoagulant-resistant rats in England and Wales. In total, approximately 1,670 rats from 115 locations were tested for resistance to warfarin. Rats that were warfarin-resistant were subsequently tested for resistance to difenacoum, and since 1991 for resistance to bromadiolone. In some cases rats were also tested for resistance to brodifacoum, and in 1995 for resistance to flocoumafen. The results of these tests showed that there was a high prevalence of resistance to the first-generation anticoagulant, warfarin, in several regions of England and Wales. Rats …
Assessment Of The Environmental Impact Of Brodifacoum During Rodent Eradication Operations In New Zealand, D. R. Morgan, G. R. Wright, S. C. Ogilvie, R. Pierce, P. Thomson
Assessment Of The Environmental Impact Of Brodifacoum During Rodent Eradication Operations In New Zealand, D. R. Morgan, G. R. Wright, S. C. Ogilvie, R. Pierce, P. Thomson
Proceedings of the Seventeenth Vertebrate Pest Conference 1996
Although Talon® baits containing brodifacoum have been used successfully in eradicating rats from some of New Zealand's offshore islands, little is known about any environmental effects of this toxin. Invertebrates, blackbirds, soil, and water at intervals of two days to nine months were sampled to determine whether brodifacoum residues were present after aerial distribution of Talon® 20P cereal pellets on Red Mercury Island and after bait-station use of Talon® 50WB wax-coated cereal blocks on Coppermine Island. No brodifacoum residues were found in soil, water, or most (99 %) invertebrate samples. Low concentrations (0.12 /μg/g) were found in …
Palatability Of Rodenticide Baits In Relation To Their Effectiveness Against Farm Populations Of The Norway Rat, Roger J. Quy, David P. Cowan, Colin Morgan, Tom Swevney
Palatability Of Rodenticide Baits In Relation To Their Effectiveness Against Farm Populations Of The Norway Rat, Roger J. Quy, David P. Cowan, Colin Morgan, Tom Swevney
Proceedings of the Seventeenth Vertebrate Pest Conference 1996
The palatability of 12 rodenticide baits, formulated to vary from poorly accepted to well accepted, was measured in laboratory choice tests against Wistar and wild-caught Norway rats. The baits, derived from six bait bases and two active ingredients, difenacoum and bromadiolone, were simultaneously tested in the field against 24 farm infestations (2/formulation) in order to investigate the relationship between palatability and efficacy. Bait acceptance in laboratory tests, with EPA meal as the challenge diet, varied from 7.0 to 50.6% for Wistar rats and 3.7 to 85.1 % for wild rats. Changing the challenge diet to a ground-up laboratory animal food …
Zinc Phosphide Residues In Voles: Scenarios Showing Low Risks To Domestic Cats And Dogs, Ray T. Sterner
Zinc Phosphide Residues In Voles: Scenarios Showing Low Risks To Domestic Cats And Dogs, Ray T. Sterner
Proceedings of the Seventeenth Vertebrate Pest Conference 1996
Zinc phosphide (Zn3P2, CAS #1314-84-7) is an acute rodenticide having numerous agricultural applications. This paper estimates the risk of mortality posed to domestic cats (Felis domesticus) and dogs (Canis familiaris) from ingestion of voles (Microtus spp.) that succumb to 2.0% Zn3P2 baits. Following a brief review of direct/indirect studies and incident reports relevant to nontarget-Zn3P2 effects and vole control, four scenarios of volecarcass ingestions needed for light and heavy cat and dog predators/scavengers to receive approximate lethal doses (ALDs = 40 mg/kg) of undigested rodenticide …