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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Low Secondary Risks For Captive Coyotes From A Sodium Nitrite Toxic Bait For Invasive Wild Pigs, Nathan P. Snow, Katherine E. Horak, Simon T. Humphrys, Linton D. Staples, David G. Hewitt, Kurt C. Vercauteren
Low Secondary Risks For Captive Coyotes From A Sodium Nitrite Toxic Bait For Invasive Wild Pigs, Nathan P. Snow, Katherine E. Horak, Simon T. Humphrys, Linton D. Staples, David G. Hewitt, Kurt C. Vercauteren
USDA Wildlife Services: Staff Publications
An acute toxic bait is being developed to deliver micro‐encapsulated sodium nitrite (SN) to stimulate severe methemoglobinemia and humane death for invasive wild pigs (Sus scrofa), thereby providing a new tool for reducing their populations. During April 2016, we evaluated sensitivity to SN and outcomes of secondary consumption in the ubiquitous mammalian scavenger, coyote (Canis latrans), to determine secondary risks of consuming carcasses of wild pigs that died from consuming the SN toxic bait. At the National Wildlife Research Center in Fort Collins, Colorado, USA, we first evaluated whether coyotes fed carcasses of domestic pigs killed by consumption of SN …
Use Of Unmanned Aircraft Systems (Uas) And Multispectral Imagery For Quantifying Agricultural Areas Damaged By Wild Pigs, Justin W. Fischer, Kelsey Greiner, Mark W. Lutman, Bryson L. Webber, Kurt C. Vercauteren
Use Of Unmanned Aircraft Systems (Uas) And Multispectral Imagery For Quantifying Agricultural Areas Damaged By Wild Pigs, Justin W. Fischer, Kelsey Greiner, Mark W. Lutman, Bryson L. Webber, Kurt C. Vercauteren
USDA Wildlife Services: Staff Publications
Wild pigs (Sus scrofa) cause extensive damage to agricultural crops, resulting in lost production and income. A major challenge associated with assessing damage to crops is locating and quantifying damaged areas within agricultural fields. We evaluated a novel method using multispectral high-resolution aerial imagery, collected from sensors mounted on unmanned aircraft systems (UAS), and feature extraction techniques to detect and map areas of corn fields damaged by wild pigs in southern Missouri, USA. Damaged areas were extracted from orthomosaics using visible and near-infrared band combinations, an object-based classification approach, and hierarchical learning cycles. To validate estimates we also collected ground …
Assessing Public Support For Restrictions On Transport Of Invasive Wild Pigs (Sus Scrofa) In The United States, Meredith J. Grady, Erin E. Harper, Keith M. Carlisle, Karina H. Ernst, Stephanie A. Shwiff
Assessing Public Support For Restrictions On Transport Of Invasive Wild Pigs (Sus Scrofa) In The United States, Meredith J. Grady, Erin E. Harper, Keith M. Carlisle, Karina H. Ernst, Stephanie A. Shwiff
USDA Wildlife Services: Staff Publications
Wild pigs (Sus scrofa) are a non-native invasive species in the United States that cause significant economic loss, transmit disease, and inflict damage upon natural resources, agriculture, livestock, and property. Geographic distribution of wild pigs in the United States has nearly tripled since 1982, with anthropogenic influences playing a significant role in the expansion. In this regard, there is speculation that a driver of the expansion may be human-mediated movement of wild pigs to new areas for the purpose of sport hunting. In response, states have implemented a variety of wild pig control policies, including legal restrictions on their transport. …
Movement Responses Inform Effectiveness And Consequences Of Baiting Wild Pigs For Population Control, Nathan P. Snow, Kurt C. Vercauteren
Movement Responses Inform Effectiveness And Consequences Of Baiting Wild Pigs For Population Control, Nathan P. Snow, Kurt C. Vercauteren
USDA Wildlife Services: Staff Publications
Wild pigs (Sus scrofa) damage agricultural and natural resources throughout their nearly global distribution. Subsequently, population control activities (e.g., trapping, shooting, or toxic baiting) frequently involve the deployment of bait to attract wild pigs. A better understanding of how wild pigs respond to bait sites can help maximize efficiency of baiting programs and identify any potential pitfalls. We examined the movement behaviors of 68 wild pigs during three stages of intensive baiting programs (i.e., 15 days each: prior, during, and post baiting) spread across two distinct study areas in southern and northern Texas, USA. We found that bait sites needed …
Road Hogs: Implications From Gps Collared Feral Swine In Pastureland Habitat On The General Utility Of Road-Based Observation Techniques For Assessing Abundance, Raoul K. Boughton, Benjamin L. Allen, Eric A. Tillman, Samantha M. Wisely, Richard M. Engeman
Road Hogs: Implications From Gps Collared Feral Swine In Pastureland Habitat On The General Utility Of Road-Based Observation Techniques For Assessing Abundance, Raoul K. Boughton, Benjamin L. Allen, Eric A. Tillman, Samantha M. Wisely, Richard M. Engeman
USDA Wildlife Services: Staff Publications
Feral swine are among the world’s most destructive invasive species, and monitoring their populations is essential for research and management purposes. Observation stations located along primitive roads have been an efficient and effective means to intercept the daily activities of many animal species for collecting data from which abundance indices can be validly calculated. Feral swine are among the many species documented to use primitive (dirt), low-use roads as routes to easily traverse surrounding habitats and thus be well-monitored in various habitats globally by using road-based observation stations such as camera traps or tracking plots. However, there are relatively few …
Locating And Eliminating Feral Swine From A Large Area Of Fragmented Mixed Forest And Agriculture Habitats In North-Central Usa, Richard M. Engeman, Bradley E. Wilson, Scott F. Beckerman, Justin W. Fischer, Doug Dufford, James Bryan Cobban
Locating And Eliminating Feral Swine From A Large Area Of Fragmented Mixed Forest And Agriculture Habitats In North-Central Usa, Richard M. Engeman, Bradley E. Wilson, Scott F. Beckerman, Justin W. Fischer, Doug Dufford, James Bryan Cobban
USDA Wildlife Services: Staff Publications
Illinois is one of the US states where elimination of feral swine (Sus scrofa) was determined practical, as only a few isolated populations were established. A particularly important step towards feral swine elimination from Illinois was to eliminate the population in Fulton County. We describe the approaches applied to systematically detect, locate, and eliminate feral swine in a successful county-wide elimination. Detecting and locating feral swine was facilitated by extensive outreach activities, aerial surveys to locate crop damage, and use of camera traps placed over bait in areas where reports, sign, or crop damage occurred. The population was …
Accounting For Heterogeneous Invasion Rates Reveals Management Impacts On The Spatial Expansion Of An Invasive Species, Kim M. Pepin, David W. Wolfson, Ryan S. Miller, Michael A. Tabak, Nathan P. Snow, Kurt C. Vercauteren, Amy J. Davis
Accounting For Heterogeneous Invasion Rates Reveals Management Impacts On The Spatial Expansion Of An Invasive Species, Kim M. Pepin, David W. Wolfson, Ryan S. Miller, Michael A. Tabak, Nathan P. Snow, Kurt C. Vercauteren, Amy J. Davis
USDA Wildlife Services: Staff Publications
Success of large-scale control programs for established invasive species is challenging to evaluate because of spatial variability in expansion rates, management techniques, and the strength of management intensity. For a well-established invasive species in the spreading phase of invasion, a useful metric of impact is the magnitude by which control slows the rate of spatial spread. The prevention of spatial spreading likely results in substantial benefits in terms of ecosystem or economic damage that is prevented by an expanding invasive species. To understand how local management actions could impact the spatial spread of an established invasive species, we analyzed distribution …