Lethal 1080 baiting continues to reduce European Red Fox (<i>Vulpes vulpes</i>) abundance after more than 25 years of continuous use in south‐west Western Australia

Marlow, Nicola; Thomas, Neil; Williams, Andrew Ae; MacMahon, Brian; Lawson, John W.; Hitchen, Yvette; Angus, John; Berry, Oliver

doi:10.1111/emr.12162

Cited by 31 publications

(29 citation statements)

References 42 publications

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“…2007; Moseby & Hill 2011; Marlow et al . 2015). Many practitioners measure baiting effectiveness through a reduction in the activity of the targeted predator species after baiting (Morris et al .…”

Section: Introductionmentioning

confidence: 99%

The ecological costs and benefits of a feral cat poison‐baiting programme for protection of reintroduced populations of the western quoll and brushtail possum

et al. 2021

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Conservation practitioners implement management interventions for the protection of threatened species, but the benefits are rarely measured. We investigated the efficacy of aerial poison baiting for feral cats, a species identified as a threat to reintroduced populations of two Australian mammals. We measured individual survival, short‐term changes in activity and longer term population trajectories in cats and reintroduced western quolls and brushtail possums before and after annual baiting events. Between 87% and 100% of radiocollared feral cats that remained in the baited area died from poisoning in 2017, 2018 and 2019. Camera detection rates significantly declined after each event (40–77%), and the proportion of cameras occupied remained lower after baiting commenced (20–60% before vs. <20% after). Cat decline on cameras was significantly higher in areas with low rabbit abundance, suggesting controlling alternative prey would improve baiting success. Importantly, none of 37 radiocollared quolls died from poisoning despite pre‐baiting trials determining that they were the most common species removing baits (26%). We detected no negative impact of baiting on the quoll and possum populations but could not demonstrate a significant net benefit. Trapping data suggested no change in annual quoll survival after baiting despite a slight increase in survival of radiocollared quolls. Quoll detection rates on camera did not significantly decline after each baiting event. A decline in the last two years of monitoring was possibly due to drought conditions. Approximately 10% of radiocollared possums died from poisoning after the first baiting event, but trapping and camera detections suggested a stable or increasing population. Poison baiting successfully reduced cat abundance, and there was no measurable negative effect on populations of reintroduced species. Long‐term monitoring through a range of seasonal conditions is required to determine the net benefit of predator control for reintroduced populations where paired impact and control sites are impractical.

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Section: Introductionmentioning

confidence: 99%

The ecological costs and benefits of a feral cat poison‐baiting programme for protection of reintroduced populations of the western quoll and brushtail possum

et al. 2021

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“…Cage and field-based (Ogilvie et al 1996) studies show that altering the bait matrix can partially overcome aversive behaviour. Marlow et al (2015) found that changing from dried meat baits to Probait Ò increased uptake by foxes in two Western Australian reserves. Switching between a cereal bait and gel increased efficacy in common brushtail possums (Ross et al 2000).…”

Section: Variation In Bait Presentation and Toxinmentioning

confidence: 99%

Reduced efficacy of baiting programs for invasive species: some mechanisms and management implications

Allsop

Dundas

Adams

et al. 2017

Pac. Conserv. Biol.

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Abstract. 'Bait-resistance' is defined as progressive decreases in bait efficacy in controlled pest species populations. Understanding the mechanisms by which bait-resistance can develop is important for the sustainable control of pests worldwide, for both wildlife conservation programs and agricultural production. Bait-resistance is influenced by both behavioural (innate and learned bait-avoidance behaviour) and physiological aspects of the target pest species (its natural diet, its body mass, the mode of action of the toxin, and the animal's ability to biochemically break down the toxin). In this review, we summarise the scientific literature, discuss factors that can lead to innate and learned aversion to baits, as well as physiological tolerance. We address the question of whether bait avoidance or tolerance to 1080 could develop in the red fox (Vulpes vulpes), an introduced predator of significant economic and environmental importance in Australia. Sublethal poisoning has been identified as the primary cause of both bait avoidance and increased toxin-tolerance, and so, finally, we provide examples of how management actions can minimise the risk of sublethal baits in pest species populations.

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“…Broad‐scale baiting occurs regularly in Australia to control invasive pests for biodiversity conservation and land management, and to reduce losses to agriculture (Marlow et al . ). Successful bait uptake is reliant upon the target species locating the bait, consuming the bait and thereby ingesting a lethal dose of the toxin.…”

Section: Introductionmentioning

confidence: 97%

Corvid interference with Canid Pest Ejectors in the southern rangelands of Western Australia

Kreplins

Kennedy

Dundas

et al. 2018

Eco Management Restoration

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Summary Canid Pest Ejectors (CPE) are a method of population management that has recently been approved for the control of wild dogs and foxes in Australia. A pilot trial of CPEs (n = 10) targeting wild dogs was conducted in the southern rangelands of Western Australia in the winter of 2017. CPEs were deployed for 81 days, which included periods of significant rainfall. CPEs were not serviced during deployment, which is a likely situation for remote areas where access may be limited. During deployment, all ejector units corroded and plastic capsules containing 1080 degraded (but did not leak). For CPEs to remain effective in the field, they require regular inspections and servicing, particularly in wet conditions. Interference by nontarget corvid species was observed. Six CPEs were interfered with by corvids, with the lures removed from three, partially removed from another two and one disassembled. Our data suggest that corvid interference with ejectors may have a significant impact on the efficiency and safety of their use. Further investigation into the usefulness of Canid Pest Ejectors as method of canid control is required for rangeland use.

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Lethal 1080 baiting continues to reduce European Red Fox (Vulpes vulpes) abundance after more than 25 years of continuous use in south‐west Western Australia

Cited by 31 publications

References 42 publications

The ecological costs and benefits of a feral cat poison‐baiting programme for protection of reintroduced populations of the western quoll and brushtail possum

The ecological costs and benefits of a feral cat poison‐baiting programme for protection of reintroduced populations of the western quoll and brushtail possum

Reduced efficacy of baiting programs for invasive species: some mechanisms and management implications

Corvid interference with Canid Pest Ejectors in the southern rangelands of Western Australia

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