Effects of broadcasting and of drilling methiocarb molluscicide pellets on field populations of wood mice,Apodemus sylvaticus

Johnson, Ian; Flowerdew, J. R.; Hare, RA

doi:10.1007/bf01688259

Cited by 19 publications

(6 citation statements)

References 5 publications

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“…Any localised effect of rodenticides on wood mouse abundance may have been quickly offset by immigration from surrounding areas, as has been observed when wood mouse numbers were reduced by autumn applications of methiocarb on arable fields (Johnson et al 1991). Wood mouse populations peak in late autumn and numbers typically decline to yearly lows in spring as a consequence of reduced food supplies and cold weather (Montgomery 1989;Montgomery and Dowie 1993b;Watts 1969).…”

Section: Discussionmentioning

confidence: 95%

Rodenticide exposure in wood mouse and house mouse populations on farms and potential secondary risk to predators

et al. 2012

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We compared capture rates and exposure to SGARs of wood mice (Apodemus sylvaticus) and house mice (Mus domesticus) in autumn/winter on farms that currently used, had previously used, and never used SGARs. 6-10 weeks after baiting programmes began, 15 % of 55 wood mice and 33 % of 12 house mice had detectable liver SGAR residues. Wood mice with residues occurred on farms not using rodenticides, reflecting the high mobility of these animals, and four had multiple liver residues, possibly due to cross-contamination of baits. The winter decline in wood mouse numbers was similar on farms that did and did not use SGARs, suggesting little long-term impact of SGARs on populations on farms. Our results indicate residual levels of rodenticides will be ever present in small mammal prey across the agricultural landscape unless all farms in a locality cease application. The implications for secondary exposure and poisoning of predators are discussed.

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Section: Discussionmentioning

confidence: 95%

Rodenticide exposure in wood mouse and house mouse populations on farms and potential secondary risk to predators

et al. 2012

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“…Unsprayed or partially sprayed areas can contain small resource‐rich patches of weeds and insects that mice detect and preferentially utilise (Tew et al 1992, 2000). While there is evidence that the anti‐cholinesterase molluscicide methiocarb has physiological, behavioural and population level impacts (Johnson et al 1991, Dell'Omo and Shore 1996aDell'Omo and Shore 1996b; Shore et al 1997), little is known of the effects of other pesticides or fertilisers on wild mammals (Macdonald and Harrington 2002).…”

Section: Discussionmentioning

confidence: 99%

Balanced dispersal or source–sink–do both models describe wood mice in farmed landscapes?

Tattersall¹,

Macdonald²,

Manley³

2004

Oikos

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W. 2004. Balanced dispersal or source Á/sink Á/ do both models describe wood mice in farmed landscapes? Á/ Oikos 106: 536 Á/550.To test two models of how wood mouse Apodemus sylvaticus populations in different patches might interact, we estimated parameters from capture-mark-recapture data in four habitats (set-aside, crop, boundary and woodlot) at two sites in arable farmland. In the source Á/sink model, populations in 'source' patches have fitness/1, while in 'sink' patches fitness isB/1; dispersal is constrained so there is a net flow of individuals from sources to sinks. In the balanced dispersal model, patches may vary in quality and carrying capacity, but there are no sinks and no constraints on dispersal; fitness is equal across patches. Our results broadly support balanced dispersal. Patches close together were more likely to exchange individuals than those far apart, there was no evidence of density-dependent dispersal and little evidence for directionality of movement. Overall population growth rates were similar in all patches (range: 0.99 Á/1.05). Times when no animals were known to be alive occurred in some patches and could be attributed to stochastic events. On one crop patch, however, extinction followed high abundance, and coincided with poor recruitment, suggesting sink dynamics. Recruitment rates were highest in boundary and crop, but surprisingly, the proportion of individuals in reproductive condition, timing of breeding and pregnancy rates did not vary between habitats. Apparent survival rates were lowest in crop, although recapture rates were high. While female body size in December did not vary between habitats, males on setaside were smaller than elsewhere. In general, the balanced dispersal model best described arable wood mouse populations, but dynamics on one patch suggested an 'attractive' sink. Our results demonstrate that more than one model for dispersal dynamics between populations may apply within the same landscape, for the same species.

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“…The molluscicide methiocarb has also been shown to cause mortality of wood mice (Apodemus sylvaticus) under field conditions (Johnson et al, 1991). De report few poisoning incidents resulting from arable use of pesticides in Europe but suggest that the efficacy of monitoring is uncertain and variable between countries.…”

Section: Pesticidesmentioning

confidence: 98%

Ecological impacts of arable intensification in Europe

Stoate¹,

Boatman²,

Borralho³

et al. 2001

Journal of Environmental Management

1,033

593

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Effects of broadcasting and of drilling methiocarb molluscicide pellets on field populations of wood mice,Apodemus sylvaticus

Cited by 19 publications

References 5 publications

Rodenticide exposure in wood mouse and house mouse populations on farms and potential secondary risk to predators

Rodenticide exposure in wood mouse and house mouse populations on farms and potential secondary risk to predators

Balanced dispersal or source–sink–do both models describe wood mice in farmed landscapes?

Ecological impacts of arable intensification in Europe

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