Estimate of herpetofauna depredation by a population of wild pigs

Jolley, D. Buck; Ditchkoff, Stephen S.; Sparklin, Bill D.; Hanson, Lenita; Mitchell, Mark; Grand, James B.

doi:10.1644/09-mamm-a-129.1

Cited by 66 publications

(65 citation statements)

References 25 publications

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“…[4][5][6][7] Additionally, these methods have not mitigated damage across large regions. 8,9 Invasive wild pigs also serve as reservoirs of diseases, 10,11 reduce plant species diversity through rooting, 12 depredate sensitive species, [13][14][15] and destroy habitats for native species. 16 As a consequence of these negative effects, a cost-effective means for controlling wild pigs, in the form of a toxic bait, is being developed for use in the United States, Australia, and New Zealand.…”

Section: Introductionmentioning

confidence: 99%

Potential secondary poisoning risks to non‐targets from a sodium nitrite toxic bait for invasive wild pigs

Snow

Foster

Horak

et al. 2017

Pest Management Science

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Section: Introductionmentioning

confidence: 99%

Potential secondary poisoning risks to non‐targets from a sodium nitrite toxic bait for invasive wild pigs

Snow

Foster

Horak

et al. 2017

Pest Management Science

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“…thanks to Life project funding), and to favor biodiversity, notably of reptiles and amphibians. Jolley et al (2010) estimated that 3000 wild boars consume more than 3 million reptiles and amphibians per year; even a small fraction of this estimate represents a major threat to snakes in Belgium. Highest wild boar densities have been precisely recorded in those areas that sheltered the largest adder populations twelve years ago ( Fig.…”

Section: Snake Population Collapsesmentioning

confidence: 99%

Catastrophic impact of wild boars: insufficient hunting pressure pushes snakes to the brink

Graitson¹,

Barbraud

Bonnet

2018

Animal Conservation

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Climatic changes, habitat loss and invasive species are important threats for many animal populations. Here, we report rapid declines and extinctions of adder populations monitored during 12 years in Belgium where none of the above causes was involved. This study provides the first large-scale data showing that wild boars represent a major risk for snakes, pushing populations to extinction. Drastic population declines were observed in the sites impacted by wild boars (N = 14), while in other sites spared by wild boars populations remained stable (N = 9). Wild boars are highly fertile and their main predators have been extirpated from Western Europe; yet, recreational hunting kept populations in check during decades. Hunting pressure is currently insufficient to control the rapid expansion of wild boars, demographic outbreaks are increasingly frequent. Wild boars are omnivorous; they can destroy snakes directly and indirectly through the depletion of snake's preys and via the destruction of key microhabitats. Snakes exhibit limited dispersal capacities; they cannot escape local perturbations and thus are highly vulnerable. Because wild boars have a very eclectic diet, are prolific breeders and are able to devastate a range of habitats their negative impact under relaxed hunting pressure applies to a huge variety of organisms, including reptiles. Policies to limit wild boar populations are urgently needed. Recommendations to target reproductive females and piglets should be generalized and applied.

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“…Our reasoning was straightforward: Juveniles are not engaged in conspicuous reproductive activity whereas foraging activity usually requires little time per day (Stubbs and Swingland, 1985;Lagarde et al, 2003;Pike and Reeder, 2006), and they suffer from high prédation pressure especially by widespread feral dogs, feral pigs and beech martens (Stubbs and Swingland, 1985;Coblentz and Baber, 1987;Jolley et al, 2010). As sueh, in many eases, juvenile tortoises presumably spend considerable amounts of time sheltered, notably under thiek vegetation, bushes, logs and stones (Blomberg and Shine, 2004;Pike and Reeder, 2006), thereby escaping human observers.…”

Section: Introductionmentioning

confidence: 99%

Fibrocement slabs as useful tools to monitor juvenile reptiles: a study in a tortoise species

Ballouard¹,

Sébastien²,

Lafon³

et al. 2013

Amphib Reptilia

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bstract. Most species of tortoises are seriously threatened worldwide. Chelonians are long-lived organisms characterized by slow detnographic traits; mathematical modeling estimated that a high rate of juvenile annual survival (i.e. >0.6 on average) is essential for the persistence of populations. Unfortunately, current knowledge about free-ranging juveniles is fragmentary. Under field conditions, young tortoises are very secretive, they remain sheltered beneath bushes, and they escape capture. The resulting lack of information impairs the assessment of key parameters such as juvenile survival, habitat use, or recruitment rate and thus seriously impedes both accurate population viability analyses and conservation planning. Large-scale monitoring of different populations of a threatened species (Te.mido hermwmi hermanni) confirmed that juveniles are rarely seen in the field. In 2011, we placed corrugated fibrocement slabs as alternative refuges for small tortoises in a densely vegetated study site. Many juveniles sheltered under the space offered by tbe corrugations; consequently they were easily captured and recaptured. Our results suggest that this simple technique may significantly improve the detectability of juveniles, providing access to the life history traits of this otherwise elusive age cohort. The slabs also provide protection against predators (such as dogs and birds) which further suggests that these refuges may also improve the survival of tbe smallest and most vulnerable individuals.

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Estimate of herpetofauna depredation by a population of wild pigs

Cited by 66 publications

References 25 publications

Potential secondary poisoning risks to non‐targets from a sodium nitrite toxic bait for invasive wild pigs

Potential secondary poisoning risks to non‐targets from a sodium nitrite toxic bait for invasive wild pigs

Catastrophic impact of wild boars: insufficient hunting pressure pushes snakes to the brink

Fibrocement slabs as useful tools to monitor juvenile reptiles: a study in a tortoise species

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