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Human–wildlife conflicts

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Articles 31 - 60 of 175

Full-Text Articles in Animal Sciences

Integrating Mammalian Hazards With Management At U.S. Civil Airports: A Case Study, Kristin M. Biondi, Jerrold L. Belant, James A. Martin, Travis L. Devault, Guiming Wang Jan 2014

Integrating Mammalian Hazards With Management At U.S. Civil Airports: A Case Study, Kristin M. Biondi, Jerrold L. Belant, James A. Martin, Travis L. Devault, Guiming Wang

Human–Wildlife Interactions

Wildlife incidents with U.S. civil aircraft cost an estimated $1.4 billion from 1990 to 2010, with mammals 5 times more likely to cause damage than other wildlife. We surveyed 2 general aviation (GA) airports and 6 Part-139 certificated (i.e., certified) airports to assess efficacy of management practices for mammalian species hazardous to aircraft. We obtained information on mammalian species present on airport grounds, types and estimated effectiveness of management techniques, and effort spent on wildlife management. We evaluated management techniques relative to aircraft–wildlife collisions (i.e., incident) frequencies taken from Federal Aviation Administration’s (FAA) National Wildlife Strike Database and species hazard …


Farmers’ Perceptions Of The Impacts Of Human– Wildlife Conflict On Their Livelihood And Natural Resource Management Efforts In Cheha Woreda Of Guraghe Zone, Ethiopia, Dagne Mojo, Jessica Rothschuh, Mehari Alebachew Jan 2014

Farmers’ Perceptions Of The Impacts Of Human– Wildlife Conflict On Their Livelihood And Natural Resource Management Efforts In Cheha Woreda Of Guraghe Zone, Ethiopia, Dagne Mojo, Jessica Rothschuh, Mehari Alebachew

Human–Wildlife Interactions

There are several livelihood improvement and natural resource management campaigns being undertaken in Ethiopia. In Cheha Woreda District of Guraghe Zone, a research team from the Ethiopian Institute of Agricultural Research, Holetta Research Center, is undertaking a watershed-level intervention to improve sustainable land management practices among resident agrarian families. In 2011, a household survey was conducted to assess farmers’ perceptions of human–wildlife conflicts (HWC) and the effects of these conflicts on land management in Cheha Woreda. One-hundred randomly selected households in the Cheha Woreda were asked to identify any wild or domestic animals that cause damage to their crops. Additionally, …


Population Trends Of Resident And Migratory Canada Geese In Relation To Strikes With Civil Aircraft, Richard A. Dolbeer, John L. Seubert, Michael J. Begier Jan 2014

Population Trends Of Resident And Migratory Canada Geese In Relation To Strikes With Civil Aircraft, Richard A. Dolbeer, John L. Seubert, Michael J. Begier

Human–Wildlife Interactions

Canada geese (Branta canadensis) are of particular concern to aviation in the USA because of their large size, flocking behavior, attraction to airports for grazing, and, for the resident population, year-round presence in urban environments. We documented trends in resident and migrant Canada goose populations in North America from 1970 to 2012, and for 1990 to 2012 examined these trends in relation to trends in reported civil aircraft collisions (strikes) with Canada geese. The overall Canada goose population increased 4.5 fold from 1.26 million in 1970 to 5.69 million in 2012. Most of this overall increase was due …


An Evaluation Of Two Traps And Sets For Trapping The Plains Pocket Gopher, Stephen M. Vantassel, Andrew J. Tyre, Scott E. Hygnstrom Jan 2014

An Evaluation Of Two Traps And Sets For Trapping The Plains Pocket Gopher, Stephen M. Vantassel, Andrew J. Tyre, Scott E. Hygnstrom

Human–Wildlife Interactions

We investigated the efficiency of DK-1 and Macabee® pocket gopher (Geomys bursarius) traps placed in lateral tunnels in both open and closed tunnel sets in rangeland and nonirrigated alfalfa fields in Nebraska. We observed no statistical difference between the traps in capture efficiency when used in open, versus closed, tunnel sets. Trapping of pocket gophers was more effective in rangeland (probability of capture in a single tunnel system using 3 traps; 63%) than nonirrigated alfalfa fields (26%). We did not determine whether this variance was due to behavioral differences between Geomys bursarius and Geomys lutescens. We found …


Wildlife Markets In South China, Alex T. Chow, Szeman Cheung, Peter K. Yip Jan 2014

Wildlife Markets In South China, Alex T. Chow, Szeman Cheung, Peter K. Yip

Human–Wildlife Interactions

China is one of the largest consumers of wild animals for food and traditional Chinese medicine in the world. A large volume of illegal trade has been recorded in the primary cities, such as Hong Kong and Guangzhou, but the wildlife markets in secondary Chinese cities have not been investigated. This study was carried out in 7 cities in Guangdong and Guangxi provinces. Wildlife trade data were collected using semi-structured interview, observation, and market survey. The study documented the selling of 97 animal species, >7,000 individuals. The most frequently used animal groups by quantity were reptiles (51%), followed by birds …


Evaluation Of Foliar Sprays To Reduce Crop Damage By Canada Geese, Charles D. Dieter, Cody S. Warner, Curiong Ren Jan 2014

Evaluation Of Foliar Sprays To Reduce Crop Damage By Canada Geese, Charles D. Dieter, Cody S. Warner, Curiong Ren

Human–Wildlife Interactions

South Dakota Department of Game, Fish and Parks annually spends >$500,000 managing crop damage caused by grazing Canada geese (Branta canadensis). Foliar applications of a chemical feeding deterrent could provide an effective alternative to the methods currently being used to reduce damage. In 2011 and 2012, we evaluated Rejex-It Migrate Turfguard®, Bird Shield®, Avian Control®, and Avipel® as grazing deterrents. We used a ground sprayer to apply the treatments every 7 days to plots in soybean fields in Day County, South Dakota. We monitored activity in the plots using time-lapse photography. We began treating the plots after geese …


Regulation Of Tree Squirrel Populations With Immunocontraception: A Fox Squirrel Example, Sara K. Krause, Douglas A. Kelt, Dirk H. Van Vuren, James P. Gionfriddo Jan 2014

Regulation Of Tree Squirrel Populations With Immunocontraception: A Fox Squirrel Example, Sara K. Krause, Douglas A. Kelt, Dirk H. Van Vuren, James P. Gionfriddo

Human–Wildlife Interactions

Tree squirrels (Sciurus spp.) are highly successful immigrants to urban and suburban areas in North America and Europe, causing both economic and ecological damage. Control of such invasive populations is challenging but of increasing importance to local managers. We studied an invasive population of fox squirrels (S. niger) and applied an immunocontraceptive vaccine in an experimental study of demographic control. Here we integrate our data into a simple stage-structured population model to simulate population reduction under 2 treatment levels (60 and 80% of females, respectively) for vaccines lasting from 1 to 5 years. Contraception can be an effective …


Survey Of Canada Goose Feces For Presence Of Giardia, Christopher R. Ayers, Christopher S. Deperno, Christopher E. Moorman, Henry H. Stibbs, Angela M. Faust Jan 2014

Survey Of Canada Goose Feces For Presence Of Giardia, Christopher R. Ayers, Christopher S. Deperno, Christopher E. Moorman, Henry H. Stibbs, Angela M. Faust

Human–Wildlife Interactions

As resident Canada goose (Branta canadensis) populations increase throughout North America, so do the health and environmental risks associated with goose feces. Previous studies suggest that goose feces may be a conduit for transmitting Giardia, a protozoan that is parasitic to humans. We surveyed fecal droppings from free-ranging resident Canada geese for Giardia spp. at 9 sites in the Triangle area (Raleigh, Durham, and Chapel Hill) of North Carolina in 2007 and 2008. Samples (n = 234) were tested using the ProSpect® Giardia EZ Microplate Assay, and there were no positives. Our results indicate that risk …


Wildlife Strikes With U.S. Military Rotary-Wing Aircraft Deployed In Foreign Countries, Brian E. Washburn, Paul J. Cisar, Travis L. Devault Jan 2014

Wildlife Strikes With U.S. Military Rotary-Wing Aircraft Deployed In Foreign Countries, Brian E. Washburn, Paul J. Cisar, Travis L. Devault

Human–Wildlife Interactions

During recent decades, rotary-wing aircraft (helicopters) within the U.S. Department of Defense (e.g., U.S Army and U.S. Air Force) have been deployed overseas to conduct a variety of noncombat and combat missions. Our objective was to conduct a comprehensive analysis of wildlife (birds, bats, insects) strikes with U.S. Army and U.S. Air Force rotarywing aircraft during overseas deployments. We acquired all available wildlife strike information involving U.S. Army and U.S. Air Force military rotary-wing aircraft engaged in flight operations associated with U.S. military bases around the world during 1990 to 2011. Wildlife strikes with military rotary-wing aircraft occurred in >31 …


Soil Quality Manipulation To Reduce Bird Presence At Airports, Theresa K. Johnston, Bruce Branham, Jeffrey Brawn Jan 2014

Soil Quality Manipulation To Reduce Bird Presence At Airports, Theresa K. Johnston, Bruce Branham, Jeffrey Brawn

Human–Wildlife Interactions

Aviation safety is an important concern in wildlife management as bird strikes risk human lives and result in costly damage. Habitat management can decrease bird abundances locally at airports. We tested soil manipulation as a technique to reduce local bird presence by establishing experimental plots with either intact topsoil or “stripped” subsoil with the aim of decreasing foraging substrate for birds. We estimated invertebrate abundance, and observed bird presence from 2006 to 2008. More birds visited topsoil plots (151.5 birds/ ha/hour) than subsoil plots (72.7 birds/ha/hour). Topsoil plots supported a greater biomass of invertebrates than subsoil plots ( = 0.39 …


Nuisance American Alligators: An Investigation Into Trends And Public Opinion, Cord B. Eversol, Scott E. Henke, Jacob L. Ogdee, David B. Wester, Amos Cooper Jan 2014

Nuisance American Alligators: An Investigation Into Trends And Public Opinion, Cord B. Eversol, Scott E. Henke, Jacob L. Ogdee, David B. Wester, Amos Cooper

Human–Wildlife Interactions

The population rebound of the American alligator (Alligator mississippiensis; hereafter, alligator), with the rapid growth of populations throughout its range, has caused an influx of human–alligator conflicts. We quantified 5,838 nuisance alligator reports from 2000 to 2011 to develop more site-specific strategies of management and to determine where management should be focused to minimize the conflict. We also surveyed the general public’s attitude toward and knowledge of alligators (n = 98) as a technique to better understand human dimensions of nuisance alligator management in Texas. Counties that received the largest numbers of nuisance alligator reports were Jefferson (16%), Fort Bend …


Determination Of Residue Levels Of Alpha-Chloralose In Duck Tissues, David A. Goldade, Randal S. Stahl, John. J. Johnston Jan 2014

Determination Of Residue Levels Of Alpha-Chloralose In Duck Tissues, David A. Goldade, Randal S. Stahl, John. J. Johnston

Human–Wildlife Interactions

Alpha-chloralose (AC) is used to capture nuisance waterfowl so that they can be relocated. Concerns for food safety limit its use prior to or during the waterfowl hunting season. To determine its half-life in tissue, we administered AC to adult male (n = 7) and female (n = 5) mallard ducks (Anas platyrhynchos) via oral gavage. A gel capsule containing 100 μCi of radioactive AC (14C-AC) and sufficient nonlabeled AC to produce a dose of approximately 30 mg/kg was given to each duck.The ducks were euthanized at 2, 6, 10, and 18 hours postdosing …


Effects Of Removal On A Lightly Exploited Coyote Population In Eastern Nevada, Patrick J. Jackson Jan 2014

Effects Of Removal On A Lightly Exploited Coyote Population In Eastern Nevada, Patrick J. Jackson

Human–Wildlife Interactions

Coyote (Canis latrans) removal is a common, yet controversial, management practice to increase game populations throughout the West. I studied the effect of removal on coyote populations in eastern Nevada from 2004 to 2008 and reviewed 27 available publications to determine the level of human exploitation on my study populations. Removals were performed by USDA Wildlife Services (WS) to benefit game populations and involved the use of trapping, neck snaring, and ground and aerial shooting. To determine if the removal had an effect on the coyote populations, I measured 3 parameters: the presence or absence of skewed sex …


Identifying People’S Most Preferred Management Technique For Feral Cats In Hawaii, Cheryl A. Lohr, Christopher A. Lepczyk, Linda J. Cox Jan 2014

Identifying People’S Most Preferred Management Technique For Feral Cats In Hawaii, Cheryl A. Lohr, Christopher A. Lepczyk, Linda J. Cox

Human–Wildlife Interactions

Feral cats (Felis catus) are abundant in many parts of the world and pose a threat to native wildlife. Human–wildlife conflicts regarding how feral cats should be managed have increased recently. In Hawaii, previous research has revealed that most residents would like to see the feral cat abundance reduced, but opinions differ regarding which techniques are acceptable for achieving this. This paper describes an analytical hierarchy process that combines rankings of decision criteria by Hawaii’s residents with expert knowledge of the costs and benefits associated with 7 techniques (live-capture and adoption, live-capture and lethal injection, live-capture and lethal gunshot, trap-neuter-release …


Morbidity And Mortality In Reptiles Presented To A Wildlife Care Facility In Central Illinois, Anne E. Rivas, Matthew C. Allender, Mark Mitchell, Julia K. Whittington Jan 2014

Morbidity And Mortality In Reptiles Presented To A Wildlife Care Facility In Central Illinois, Anne E. Rivas, Matthew C. Allender, Mark Mitchell, Julia K. Whittington

Human–Wildlife Interactions

We examined morbidity and mortality of 200 reptiles, representing 13 different species that were presented to the University of Illinois Wildlife Medical Clinic (WMC) from 2003 to 2010. Snapping turtles (Chelydra serpentine; n = 46), box turtles (Terrapene sp.; n = 43), painted turtles (Chrysemys picta; n = 37), and red-eared slider turtles (Trachemys scripta elegans; n = 33) were the most frequently seen species. Turtles were significantly more likely to be presented to the WMC following collision with a motor vehicle (n = 73) than any other reason, including idiopathic trauma (i.e., …


Evaluation Of Eight Repellents In Deterring Eastern Cottontail Herbivory In Connecticut, Scott C. Williams, Michael R. Short Jan 2014

Evaluation Of Eight Repellents In Deterring Eastern Cottontail Herbivory In Connecticut, Scott C. Williams, Michael R. Short

Human–Wildlife Interactions

Herbivory by eastern cottontails (Sylvilagus floridanus) can be the source of significant agricultural, nursery, and managed landscape damage. Where cottontails cannot be managed by lethal means or where trap and release is infeasible, repellents may be a reasonable alternative. We tested 8 different repellent formulations (Bobbex Deer Repellent® Canadian formulation concentrate, Bobbex Deer Repellent® Canadian ready-to-use (RTU), Bobbex-R Animal Repellent® concentrate, Bonide Repels All® concentrate, Bonide Deer & Rabbit Repellent® concentrate, Liquid Fence® Deer & Rabbit Repellent concentrate, Plantskydd® soluble powder, and Rabbit Stopper® RTU) on Johnny jump-ups (Viola tricolor), lettuce (Lactuca sativa), and …


Examining Patterns Of Animal–Vehicle Collisions In Alabama, Usa, Xiongwen Chen, Shuhong Wu Jan 2014

Examining Patterns Of Animal–Vehicle Collisions In Alabama, Usa, Xiongwen Chen, Shuhong Wu

Human–Wildlife Interactions

Animal–vehicle collisions (AVCs) cause animal death, human injury, and vehicle damage. Uncovering the general patterns and related ecological processes of AVCs is useful for developing mitigation strategies. We examined some previous patterns about AVCs from records in Alabama during 2001 to 2011. The results confirm that: (1) there was a seasonal pattern, with >50% of AVCs occurring in winter; (2) AVCs occurred most frequently at dawn and dusk in the diurnal pattern; and (3) most AVCs occurred on county highways. However, interstate and federal highways had higher numbers of AVCs per km of road. Counties within metropolitan areas had more …


Efficacy Of Ropel® As A Coyote Repellent, Elizabeth A. Miller, Julie K. Young, Scott Stelting, Bruce A. Kimball Jan 2014

Efficacy Of Ropel® As A Coyote Repellent, Elizabeth A. Miller, Julie K. Young, Scott Stelting, Bruce A. Kimball

Human–Wildlife Interactions

We examined the repellency of a commercially available animal repellent to determine the efficacy of its application to objects that are attractive to coyotes (Canis latrans). Specifically, we aimed to both prevent chewing behavior by coyotes on a nylon-like strapping material, which is used to construct barrier-arresting systems on military airstrips, and determine the ability of the solution to prevent the animals from repeating the undesired behavior. We mixed Ropel® Animal and Rodent Repellent with a liquid latex sticker to form a 2% latex and 98% Ropel solution. We used a 2% latex and 98% water solution as …


Oil And Gas Impacts On Wyoming’S Sagegrouse: Summarizing The Past And Predicting The Foreseeable Future, Dave H. Applegate, Nick L. Owens Jan 2014

Oil And Gas Impacts On Wyoming’S Sagegrouse: Summarizing The Past And Predicting The Foreseeable Future, Dave H. Applegate, Nick L. Owens

Human–Wildlife Interactions

Historical impacts from oil and gas development to greater sage-grouse (Centrocercus urophasianus) habitat are well-documented in some areas of Wyoming, in particular within natural gas development fields, such as the Powder River Basin and JonahPinedale. The drilling techniques and pad densities in these fields have been extrapolated to estimate future oil and gas impacts in the U. S. Fish and Wildlife Service (2010) warranted-but-precluded listing determination for the sage-grouse under the Endangered Species Act. Further, assumptions regarding the scale of oil and gas development are incorporated within various resource management plan amendments by the Bureau of Land Management …


Influence Of Removal Sampling Of Small Mammals On Abundance And Diversity Attributes: Scientific Implications, Thomas P. Sullivan, Druscilla S. Sullivan Jan 2013

Influence Of Removal Sampling Of Small Mammals On Abundance And Diversity Attributes: Scientific Implications, Thomas P. Sullivan, Druscilla S. Sullivan

Human–Wildlife Interactions

Terrestrial small mammals occupy a variety of temperate and boreal forests in North America and Eurasia and contribute to biodiversity within these ecosystems. Researchers commonly use a variation of removal trapping to sample small-mammal populations and communities in these systems. However, it is not known if recurrent removal sampling might bias abundance estimates or alter the very populations under study. We addressed 2 questions: (1) are estimates of population size and species richness and diversity gained from removal trapping different from those based on live-trapping? and (2) what residual impact does removal trapping have on small-mammal populations and communities, as …


Keys To Managing A Successful Archery Deer Hunt In An Urban Community: A Case Study, Chad M. Stewart, Bruce Keller, Chad R. Williamson Jan 2013

Keys To Managing A Successful Archery Deer Hunt In An Urban Community: A Case Study, Chad M. Stewart, Bruce Keller, Chad R. Williamson

Human–Wildlife Interactions

White-tailed deer (Odocoileus virginianus) populations can expand greatly in suburban areas where hunting is limited or prohibited. Incorporating a hunting program for management purposes is often unfeasible due to property parcelization and varying opinions on deer management within each community. We present the case of Hidden Valley Lake, Indiana (707 ha), whose deer population was effectively reduced by archery hunting within a dense human population. Prior to implementing a managed archery program, deer density estimates exceeded 60 deer/km2. After the first year of the managed archery hunt, where 230 deer (~36 deer/km2) were removed, …


Potential Role Of Wildlife In Pathogenic Contamination Of Fresh Produce, Jeff A. Langholz, Michele T. Jay-Russell Jan 2013

Potential Role Of Wildlife In Pathogenic Contamination Of Fresh Produce, Jeff A. Langholz, Michele T. Jay-Russell

Human–Wildlife Interactions

The safety of fresh produce is an important concern in the United States, especially in the wake of recent national foodborne illness outbreaks. The agricultural industry has implemented steps to enhance food safety along the entire farm-to-fork supply chain. This includes on-farm measures to exclude wildlife and to remove its habitat in and around fields. Farmers and others from across the United States have expressed concern about the ecological consequences and uncertain food safety benefits of such practices. This article reviews the scientific rationale behind management of wildlife and its habitat as part of good agriculture practices for enhancing food …


Avian Diets In A Saline Ecosystem: Great Salt Lake, Utah, Usa, Anthony J. Roberts Jan 2013

Avian Diets In A Saline Ecosystem: Great Salt Lake, Utah, Usa, Anthony J. Roberts

Human–Wildlife Interactions

Saline lakes provide a prey-rich, predator-free environment for birds to utilize during migration and stopover periods. The Great Salt Lake (GSL), Utah is the largest salt lake in North America and is utilized by millions of migratory birds. It also is host to multiple commercial endeavors. Proposed expansion of commercial use of the GSL would result in increased impounded area and water extraction for mineral production, which may increase the GSL’s salinity and negatively impact invertebrate abundance. I review previous literature and synthesize diets of avian species utilizing the GSL to determine the importance of each invertebrate species, including brine …


Beware The Boojum: Caveats And Strengths Of Avian Radar, Robert C. Beason, Tim J. Nohara, Peter Weber Jan 2013

Beware The Boojum: Caveats And Strengths Of Avian Radar, Robert C. Beason, Tim J. Nohara, Peter Weber

Human–Wildlife Interactions

Radar provides a useful and powerful tool to wildlife biologists and ornithologists. However, radar also has the potential for errors on a scale not previously possible. In this paper, we focus on the strengths and limitations of avian surveillance radars that use marine radar front-ends integrated with digital radar processors to provide 360° of coverage. Modern digital radar processors automatically extract target information, including such various target attributes as location, speed, heading, intensity, and radar cross-section (size) as functions of time. Such data can be stored indefinitely, providing a rich resource for ornithologists and wildlife managers. Interpreting these attributes in …


Generational Habituation And Current Bald Eagle Populations, Jeremy E. Guinn Jan 2013

Generational Habituation And Current Bald Eagle Populations, Jeremy E. Guinn

Human–Wildlife Interactions

Bald eagle (Haliaeetus leucocephalus) populations have expanded, even as increasing human presence and activity near nesting sites has increased. The generational habituation hypothesis may explain current bald eagle behaviors associated with human presence. Generational habituation begins when a juvenile imprints on a nest area near human activity, then selects a similar nest site when it is reproductively mature. Successive generations also may imprint on nest sites near human activity, expanding the population into areas that once were considered suboptimal nesting habitat. Generational habituation has implications in several areas important to basic and applied ecology in a wide range …


Commentary Managing Risk From Bears And Other Potentially Lethal Wildlife: Predictability, Accountability, And Liability, Stephen Stringham Jan 2013

Commentary Managing Risk From Bears And Other Potentially Lethal Wildlife: Predictability, Accountability, And Liability, Stephen Stringham

Human–Wildlife Interactions

No abstract provided.


Effects Of Site Characteristics, Pinyon-Juniper Management, And Precipitation On Habitat Quality For Mule Deer In New Mexico, Louis C. Bender, Jon C. Boren, Heather Halbritter, Shad Cox Jan 2013

Effects Of Site Characteristics, Pinyon-Juniper Management, And Precipitation On Habitat Quality For Mule Deer In New Mexico, Louis C. Bender, Jon C. Boren, Heather Halbritter, Shad Cox

Human–Wildlife Interactions

Wildlife enterprises are increasingly important to ranch income in the western United States. Habitat management practices that facilitate wildlife are needed for optimal management of multiple-use ranches, particularly for economically important species, such as mule deer (Odocoileus hemionus), that are declining throughout much of their range. We tested the effects of vegetation cover type, site characteristics, pinyon-juniper management treatments, and precipitation on body condition and size of spring-summer-autumn (SSA) home ranges of mule deer to assess habitat quality on the Corona Range and Livestock Research Center (CRLRC), a multiple-use research ranch in east central New Mexico. Accrual of …


Reliability And Precision Of Pellet-Group Counts For Estimating Landscape-Level Deer Density, David Decalesta Jan 2013

Reliability And Precision Of Pellet-Group Counts For Estimating Landscape-Level Deer Density, David Decalesta

Human–Wildlife Interactions

This study provides hitherto unavailable methodology for reliably and precisely estimating deer density within forested landscapes, enabling quantitative rather than qualitative deer management. Reliability and precision of the deer pellet-group technique were evaluated in 1 small and 2 large forested landscapes. Density estimates, adjusted to reflect deer harvest and overwinter mortality, were compared with a drive count on the small landscape and with aerial counts using forward-looking infrared videography (FLIR) on the large landscapes. Estimates by 2 expert and 2 novice counters (range = 17.6 to 18.6 deer/km2) on the small landscape were not different from each other …


Jaguar And Puma Attacks On Livestock In Costa Rica, Ronit Amit, Elias José Gordillo-Chávez, Raquel Bone Jan 2013

Jaguar And Puma Attacks On Livestock In Costa Rica, Ronit Amit, Elias José Gordillo-Chávez, Raquel Bone

Human–Wildlife Interactions

Human–felid conflicts threaten long-term conservation of jaguars (Panthera onca) and pumas (Puma concolor). We interviewed ranchers from 50 ranches and inspected farms in northern Costa Rica that reported recent attacks on livestock by these 2 felids. We analyzed ranch characteristics, livestock management practices, details of predation, estimated market-value of economic losses, and ranchers’ perception of damage. Ranchers reported 81 felid attacks on livestock, including 60 head of cattle, 16 horses, 3 sheep, 1 pig, and 1 goat. Mean size of ranches was 233 km2, and mean livestock herd size was 109, including cattle, horses, …


Consumption Of Whole Cottonseed By White-Tailed Deer And Nontarget Species, Benjamin D. Taylor, Eddie Lyons, Dale Rollins, Cody B. Scott, James E. Huston, Charles A. Taylor Jan 2013

Consumption Of Whole Cottonseed By White-Tailed Deer And Nontarget Species, Benjamin D. Taylor, Eddie Lyons, Dale Rollins, Cody B. Scott, James E. Huston, Charles A. Taylor

Human–Wildlife Interactions

Supplementing diets of white-tailed deer (Odocoileus virginianus) with pelleted rations is an increasingly common practice aimed at increasing deer antler size on rangelands in Texas. Feed loss to consumption by various nontarget species (e.g., raccoons [Procyon lotor] and feral pigs [Sus scrofa]) raises both ecological and economic concerns. Whole cottonseed is a feedstuff that may afford a more targeted supplemental feeding effort. Accordingly, we determined: (1) consumption rates of whole cottonseed by feral pigs and raccoons in captivity; and (2) species visitation at feed sites and preference for whole cottonseed relative to whole corn …