A call and suggested criteria for standardizing economic estimates of wild pig damage

Didero, Nicole; Ernst, Karina; McKee, Sophie; Shwiff, Stephanie A.

doi:10.1016/j.cropro.2022.106149

Cited by 6 publications

(7 citation statements)

References 33 publications

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“…damage to roadways, bridges, buildings), vehicles, natural resources (i.e. wildlife, endangered species, habitats), other agricultural resources, and public health (Didero et al 2023;VerCauteren et al 2024).…”

Section: Discussionmentioning

confidence: 99%

“…Wild pig (Sus scrofa), also known as 'feral swine,' 'wild boar,' and 'feral hog', among other names (Keiter et al 2016), is an invasive species in the USA that was introduced as a food source by early Spanish explorers to North America in the 1500s (Belden and Frankenberger 1977). Its presence and continued proliferation are of considerable economic concern (Shwiff et al 2017(Shwiff et al , 2020Didero et al 2023), because they cause extensive damage to US agriculture (Bankovich et al 2016;Carlisle et al 2021;McKee et al 2023McKee et al , 2024, negatively affect natural resources and the environment (e.g. Barrios-Garcia and Ballari 2012;Engeman et al 2019), and present disease risks to domestic livestock and humans (Brown et al 2021;Orr et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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An estimate of the marginal annual economic contribution of wild-pig hunting in Texas

McKee,

Carlisle,

Tomeček

et al. 2024

Wildlife Res.

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Context Wild-pig hunting is a culturally significant recreational and commercial activity in Texas, but the overall impacts are contested. Except for one 1980s study, there has been no research to formally quantify any economic benefits of wild-pig hunting in Texas, which is an important component for weighing the costs and benefits of wild-pig presence in the state. Aims and methods To fill that research gap, we surveyed a sample of resident and non-resident 2018–2019 hunting-license holders in Texas about various topics related to their wild-pig hunting activities, including expenditures. Key results On the basis of the 37,317 responses received, we estimated that the marginal annual direct economic benefit of wild-pig hunting to the Texas economy ranges between US$68.5 million and US$188.0 million (2022 dollar values). Given that we were not able to distinguish whether purchases were made in or out of state for expenses provided, we believe this range is an upper estimate. Conclusion and implications Although hunting is an important consideration in the discussion of wild-pig management, this estimate is dwarfed by the estimated total damage costs associated with wild pigs in Texas.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An estimate of the marginal annual economic contribution of wild-pig hunting in Texas

McKee,

Carlisle,

Tomeček

et al. 2024

Wildlife Res.

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“…These findings indicate that wild pig foraging behavior accounts for the most damage reported, especially to agriculture and natural resources. This is not surprising considering these damages also generate the largest economic consequences (Didero et al 2023). Although most studies report wild pig effects as negative impacts, there have been positive or neutral effects reported, especially to natural resources (Fig.…”

Section: What Is Known About Damage Caused By Wild Pigsmentioning

confidence: 95%

“…We summarized economic losses when reported, but we focused on reviewing the non-monetary amounts of physical damage and how to measure and manage that damage. This review builds from the recent review by Didero et al (2023) on economic estimates of damage from wild pigs by expanding outside of the USA, and by focusing on a more inclusive list of studies reviewed. We did not limit our studies to just those that reported an economic value for damage, nor did we restrict types of physical damage.…”

Section: Introductionmentioning

confidence: 99%

What is known, unknown, and needed to be known about damage caused by wild pigs

VerCauteren,

Pepin,

Cook

et al. 2024

Biol Invasions

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Damage assessments provide evidence for initiating and evaluating management programs that protect natural resources and human livelihoods against invasive species. Wild pigs (Sus scrofa) cause extensive damage in their native and non-native ranges, but the extent of current damage and efficacy of management of the damage (i.e., population control of wild pigs, exclusion fencing, etc.) remains poorly described. We conducted a systematic review of physical damage caused by wild pigs to summarize what is known and identify knowledge gaps for damage assessment. Wild pig damage assessments have been overwhelmingly qualitative (84% of studies) and measured differently across studies, which prevents the determination of typical damage amounts to a particular resource and comparison across studies. Key priorities going forward are to standardize damage assessments quantitatively and measure population density (or index of such) of wild pigs concurrently with damage assessments to determine the relationship between damage and population levels. We provide a framework for inferring damage in new areas and assessing the benefits of management—to evaluate and optimize landscape-scale management programs. Overall, we recommend future studies strive for: (1) report the amount of damages in a standardized fashion (e.g., area damaged/area surveyed), (2) evaluate and report the amount of damage relative to the density of wild pigs, and (3) when reporting economic costs of damages incurred and management actions, describe the economic valuation method used along with the year of reference for the valuation. Capturing these elements are necessary steps to predict the benefits of management for an area with particular profile of resources and wild pig density, even in areas where damage assessments are not available. Meeting these criteria with allow for more generalizable results that can inform managers across the nearly global distribution of wild pigs.

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“…Their distributions in the US have been estimated to overlap with over 85% of imperiled species that could be directly impacted by wild pigs through habitat destruction or predation 8 . A growing body of literature 10 seeks to describe and quantify their economic impact, including to agriculture and natural resources 11 , 12 .…”

Section: Introductionmentioning

confidence: 99%

DNA metabarcoding reveals consumption of diverse community of amphibians by invasive wild pigs (Sus scrofa) in the southeastern United States

Canright,

Piaggio,

Chinn

et al. 2023

Sci Rep

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Invasive wild pigs (Sus scrofa) are one of the most widespread, destructive vertebrate species globally. Their success can largely be attributed to their generalist diets, which are dominated by plant material but also include diverse animal taxa. Wild pigs are demonstrated nest predators of ground-nesting birds and reptiles, and likely pose a threat to amphibians given their extensive overlap in wetland use. DNA metabarcoding of fecal samples from 222 adult wild pigs culled monthly from 2017 to 2018 revealed a diverse diet dominated by plant material, with 166 plant genera from 56 families and 18 vertebrate species identified. Diet composition varied seasonally with availability for plants and was consistent between sexes. Amphibians were the most frequent vertebrate group consumed and represented the majority of vertebrate species detected, suggesting amphibians are potentially vulnerable to predation by wild pigs in our study region. Mammal, reptile, and bird species were also detected in pig diets, but infrequently. Our results highlight the need for research on the impacts of wild pigs on amphibians to better inform management and conservation of imperiled species.

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A call and suggested criteria for standardizing economic estimates of wild pig damage

Cited by 6 publications

References 33 publications

An estimate of the marginal annual economic contribution of wild-pig hunting in Texas

An estimate of the marginal annual economic contribution of wild-pig hunting in Texas

What is known, unknown, and needed to be known about damage caused by wild pigs

DNA metabarcoding reveals consumption of diverse community of amphibians by invasive wild pigs (Sus scrofa) in the southeastern United States

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