Secondary toxcity of difethialone to Barn owl (Tyto alba) has been investigated. Difethialone was fed to owls for successive periods of 1 (phase 1), 3 (phase 2) and 6 (phase 3) days viarodenticide dosed rats. The owls survived after the treament of rodenticide on phase 1 and phase 2 experiments but they died during phase 3 experiment. The results suggest that the difethialone could cause more s...

Exposure, as well as toxicity, determines whether rodenticides present real environmental hazards to nontarget animals. In order to combine exposure and toxicity, a compartment model is proposed which distinguishes transfer processes from accumulation of residues. The published literature relevant to the model is analysed, and some important gaps in knowledge are highlighted. Simple sub-models ...

Abstract Rodent population control is a global problem, complicated by evolved non-responsiveness to rodenticide treatment. Contraceptives could help mitigate this challenge, but questions remain about their efficacy, especially for rodenticide-resistant populations. We used an age-dependent demographic model generate two hypotheses: Fertility reduction applied early in female lifetimes (1) mor...

The present study gives an overview of the in utero exposure of the developing rat fetus to Racumin rodenticide. In the current investigation, pregnant rats were exposed orally to either 1.65 or 0.83 mg/kg b.wt (1/10 and 1/20 LD50, respectively) of coumatetralyl daily on days 6 through 15 of gestation (organogenesis period). Maternal and fetal parameters were evaluated on day 20 of gestation. F...

Abstract Alternatives to pesticides are urgently needed meet sustainable agriculture goals but few options available for many systems. Here we test how a form of olfactory misinformation on newly sown wheat crop can prevent wild house mice ( Mus musculus ) from finding buried seeds. Our tactic, odour camouflage, reduced seed loss by >63%, providing simple, non-lethal and ethical way reduce d...

Poultry farms in Central Argentina are often infested by Mus musculus L., despite the regular application of the rodenticide bromadiolone. This failure may be explained by the consumption pattern of mice, which may prefer alternative foods available on the farms to bromadiolone baits. Here we examine the consumption pattern of bromadiolone in the presence of wheat by M. musculus infesting poult...