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Full-Text Articles in Physical Sciences and Mathematics

Complexities Of Urban Coyote Management: Reaching The Unreachable, Teaching The Unteachable, And Touching The Untouchable, Robert H. Schmidt Apr 2007

Complexities Of Urban Coyote Management: Reaching The Unreachable, Teaching The Unteachable, And Touching The Untouchable, Robert H. Schmidt

Wildlife Damage Management Conference Proceedings

Urban coyote (Canis latrans) management is often complicated, but the technical portion of any management program is only one part of the equation. The use of lethal (traps, snares, shooting, toxicants) and non-lethal (exclusion, guard animals, husbandry practices, harassment) coyote management strategies can be successful, less than successful, or not successful depending on the appropriate match of technical skill and technology available in a particular situation. However, technical sophistication is only a portion of the management dilemma. Issues of policy, law, politics, and economics, as well as human values, attitudes, and ethics play an obvious and profound role …


A Broad Perspective On Current And Future Research On Urban Coyotes, John A. Shivik, Kathleen A. Fagerstone Apr 2007

A Broad Perspective On Current And Future Research On Urban Coyotes, John A. Shivik, Kathleen A. Fagerstone

Wildlife Damage Management Conference Proceedings

A change in wildlife management appears to be occurring. Previous efforts needed to be focused on producing more game species or endangered animals; now, however, tools and training must resolve issues of overabundance and conflict with predators, especially species such as coyotes (Canis latrans) in urban areas. Urban conflicts with coyotes may be growing because of urban development of land and human intrusion, but alteration of habitats that attract coyotes is also a likely factor. Research that will describe basic coyote biology in urban areas will be needed, but managers will also need applied research and development of …


A History Of Urban Coyote Problems, Robert M. Timm, Rex O. Baker Apr 2007

A History Of Urban Coyote Problems, Robert M. Timm, Rex O. Baker

Wildlife Damage Management Conference Proceedings

We summarize previously published information on coyote attacks on humans in North America. This problem has developed primarily in urban and suburban areas of southern California since the early 1970s, and the frequency of attacks and other human safety incidents is increasing. Similar attacks are now known from at least 18 states in addition to California and from 4 Canadian provinces, with the majority of attacks occurring since the early 1990s. We review early explorers’ and settlers’ accounts of coyotes in the Los Angeles area, as well as development of coyote control programs during the 20th century. We also describe …


The Co-Existing With Coyotes Program In Vancouver, B.C., Robyn E. Worcester, Robert Boelens Apr 2007

The Co-Existing With Coyotes Program In Vancouver, B.C., Robyn E. Worcester, Robert Boelens

Wildlife Damage Management Conference Proceedings

When coyotes first arrived in Vancouver, BC they brought surprise, myths, and concern to the public as they grew comfortable in our city parks, golf courses, and neighborhoods. The Co-existing with Coyotes (CWC) program was created in 2001 and is based on the recommendations of a research project about public perceptions on urban coyotes. This program aims to reduce conflict between coyotes, pets, and people by providing information to both targeted and general audiences as well as providing a direct response to individual coyotes that are starting to, or are displaying, behavior of concern. The general public is reached through …


An Overview Of The 2nd National Invasive Rodent Summit, Gary Witmer, John Eisemann Jan 2005

An Overview Of The 2nd National Invasive Rodent Summit, Gary Witmer, John Eisemann

Wildlife Damage Management Conference Proceedings

On October 19-21, 2004, the USDA, APHIS, Wildlife Services, National Wildlife Research Center (NWRC) in Fort Collins, CO, hosted the 2nd National Invasive Rodent Summit. The conference was jointly sponsored by the NWRC, the U.S. Fish and Wildlife Service (FWS) and The Wildlife Society’s Wildlife Damage Management Working Group. The conference was a follow-up to the 2001 “Rat Summit” held in San Francisco, CA. Like the “Rat Summit,” this conference emphasized the management of rodents to conserve plants, other wildlife and habitats. The scope of the problem, concerns, species involved, and lands affected were all considered. The conference began with …


Evaluation Of A New Strategy For Control Of Bovine Tuberculosis In Michigan White-Tailed Deer: Year 1 Progress Report, Stephen Schmitt, Daniel O'Brien, Elaine Carlson, David Smith, Zachary Cooley, Brent Rudolph, Graham Hickling, Graham Nugent, Peter Butchko Jan 2005

Evaluation Of A New Strategy For Control Of Bovine Tuberculosis In Michigan White-Tailed Deer: Year 1 Progress Report, Stephen Schmitt, Daniel O'Brien, Elaine Carlson, David Smith, Zachary Cooley, Brent Rudolph, Graham Hickling, Graham Nugent, Peter Butchko

Wildlife Damage Management Conference Proceedings

The State of Michigan is striving to eliminate bovine tuberculosis (Tb) infection among free-ranging white-tailed deer in the northeastern Lower Peninsula of the state. Aggressive reduction in the overall deer population abundance may help to further reduce TB prevalence, but this course of action is unacceptable to many hunters and landowners. Targeted culling of sick deer would likely be far more acceptable to these stakeholders, so in the winter of 2003 the Michigan Department of Natural Resources pilot-trialed a new strategy based on live-trapping and Tb-testing of wild deer. The field study was conducted in a township with relatively high …


Bovine Tb Eradication Project – Recognizing Hot Button Issues, Bridget Kavanagh-Patrick Jan 2005

Bovine Tb Eradication Project – Recognizing Hot Button Issues, Bridget Kavanagh-Patrick

Wildlife Damage Management Conference Proceedings

The Michigan Departments of Agriculture, Community Health, and Natural Resources, US Department of Agriculture (USDA) and Michigan State University work cooperatively together as the bovine TB eradication project partners. The interagency group combines expertise in epidemiology, veterinary and human medicine, pathology, wildlife biology, animal husbandry, regulatory law and policy and risk communications. The stakeholders, those impacted by the disease, include agriculture and tourism industry representatives, “Mom-and-Pop” businesses, hunters, wildlife enthusiasts, farmers, Local Health Departments and legislators. The regulatory agencies are the above mentioned project partners, excluding MSU and USDA Wildlife Services, both of which offer services to agencies and stakeholders. …


Monitoring Raccoon Rabies In Alabama: The Potential Effects Of Habitat And Demographics, Wendy Arjo, Christine Fisher, James Armstrong, Dana Johnson, Frank Boyd Jan 2005

Monitoring Raccoon Rabies In Alabama: The Potential Effects Of Habitat And Demographics, Wendy Arjo, Christine Fisher, James Armstrong, Dana Johnson, Frank Boyd

Wildlife Damage Management Conference Proceedings

Density, morphometrics, and disease prevalence of raccoon populations were determined in 4 habitats (agriculture, riverine, managed, and forested) in central Alabama. In addition we monitored 71 collared raccoons to determine survival. Density estimates were similar in the agriculture (ag) and riverine habitats in central Alabama with 8 raccoons/km2, and lower in the forested habitat at 5 raccoons/ km2. Retention of juveniles did not appear to contribute to observed higher populations in the riverine and ag habitat. Although the riverine and ag, possibly due to supplemental resources, likely provide better habitat for raccoons, we found only body …


Oral Rabies Vaccination—A Progress Report, Dennis Slate, Charles Rupprecht, Mike Dunbar, Robert Mclean Jan 2005

Oral Rabies Vaccination—A Progress Report, Dennis Slate, Charles Rupprecht, Mike Dunbar, Robert Mclean

Wildlife Damage Management Conference Proceedings

Oral rabies vaccination (ORV) targeting specific wild Carnivora species has emerged as an integral adjunct to conventional rabies control strategies to protect humans and domestic animals. ORV has been applied with progress toward eliminating rabies in red foxes (Vulpes vulpes) in western Europe and southern Ontario, Canada. Beginning in the 1990’s, coordinated ORV was implemented in Texas to contain and eliminate variants of rabies virus in the gray fox (Urocyon cinereoargenteus ) and coyote (Canis latrans ) and in several eastern U.S. States with the goal of preventing spread of raccoon (Procyon lotor ) rabies. …


Development Of Nicarbazin As A Reproductive Inhibitor For Resident Canada Geese, Kimberly Bynum, Christi Yoder, John D. Eisemann, John Johnston, Lowell Miller Jan 2005

Development Of Nicarbazin As A Reproductive Inhibitor For Resident Canada Geese, Kimberly Bynum, Christi Yoder, John D. Eisemann, John Johnston, Lowell Miller

Wildlife Damage Management Conference Proceedings

Expanding populations of resident Canada geese that remain in suburban and urban areas year-round often result in increased conflicts with humans. Non-lethal and humane means are needed for managing the size of Canada goose flocks residing near or on airports, golf courses, industrial parks, government sites, and city parks. A side effect of nicarbazin, a veterinary drug used to control coccidiosis in chickens, is decreased egg production and hatching. Exploiting this side effect, studies of nicarbazin for reducing the hatchability of eggs from Canada geese were conducted. An initial study in Coturnix quail verified reduction in hatchability in a species …


Use Of Deer Repellents To Preserve Wildlife Food Plots For Game Birds, Wendy Arjo, Kimberly Wagner, Chad Richardson, Dale L. Nolte Jan 2005

Use Of Deer Repellents To Preserve Wildlife Food Plots For Game Birds, Wendy Arjo, Kimberly Wagner, Chad Richardson, Dale L. Nolte

Wildlife Damage Management Conference Proceedings

Food plots are a vital element for the survival of game bird species such as bobwhite quail (Colinus virginianus) on Fort Riley Military Installation in Kansas. However, white-tailed deer (Odocoileus virginianus) tend to eat the sorghum when it starts to ripen in September and continue feeding on it through November and December, often leaving no food for the quail during the winter. We conducted pen and field trails to determine if repellents were an effective and feasible method to protect grain sorghum food plots from deer damage. Two-choice pen trials with both deer and game bird …


Conference Participants Jan 2005

Conference Participants

Wildlife Damage Management Conference Proceedings

No abstract provided.


Use Of Natural Vegetative Barriers To Limit Expansion Of Blacktailed Prairie Dog Towns, David Terrall, Jonathan Jenks, Arthur Smith Jan 2005

Use Of Natural Vegetative Barriers To Limit Expansion Of Blacktailed Prairie Dog Towns, David Terrall, Jonathan Jenks, Arthur Smith

Wildlife Damage Management Conference Proceedings

Prairie dog (Cynomys ludovicianus) control has historically consisted of lethal methods to maintain, reduce, or eliminate populations in South Dakota and throughout the species range. Non-lethal methods of control are desired to meet changing management objectives for the black-tailed prairie dog. The use of naturally occurring buffer strips as vegetative barriers may be effective in limiting prairie dog town expansion. The objectives of this study were: 1) to evaluate effective width of vegetative barriers in limiting prairie dog towns expansion in western South Dakota; and 2) to document effect native vegetation height on expansion of prairie dog towns …


Badger Movement Ecology In Colorado Agricultural Areas After A Fire, Craig Ramey, Jean Bourassa Jan 2005

Badger Movement Ecology In Colorado Agricultural Areas After A Fire, Craig Ramey, Jean Bourassa

Wildlife Damage Management Conference Proceedings

While investigating the American badger (Taxidea taxus) in eastern Colorado’s wheatlands, we studied 3 badgers which were affected by a 2.1 km2 man-made fire and compared them to 2 adjacent badgers unaffected by the fire. All badgers were equipped with radio-telemetry collars and generally located day and night for approximately 1 month pre-fire and 3 weeks post-fire. Three point triangulation locations were converted into a global information system database. Adaptive kernel analyses compared pre- and post-fire horizontal: home ranges (i.e. 95% utilization areas, UAs), core activity areas (50% UAs), movements, den and habitat use patterns. Mean (x) …


Black-Tailed Prairie Dog Colony Dynamics In South Dakota Over A 10-Year Period, Kathleen Fagerstone, Howard Tietjen, James Glahn, Greg Schenbeck, Jean Bourassa Jan 2005

Black-Tailed Prairie Dog Colony Dynamics In South Dakota Over A 10-Year Period, Kathleen Fagerstone, Howard Tietjen, James Glahn, Greg Schenbeck, Jean Bourassa

Wildlife Damage Management Conference Proceedings

Between 1968 and 1978, aerial photography was used to monitor distribution of blacktailed prairie dog (Cynomys ludovicianus) colonies on a 400-square mile area in South Dakota, including parts of Buffalo Gap National Grassland, Pine Ridge Indian Reservation, and Badlands National Monument (now Badlands National Park). Aerial photographs were taken of the study area in 1968 and annually from 1974 through 1978 at a scale of 1:20,000 (1968) and 1:15,840 (1974- 1978). Prairie dog colonies were identified on the photographs, outlined, and the outline transferred to USGS topographic maps for colony size measurements. This technique reliably detected changes in …


Effects Of Decoy Gender And Wing Clipping On Capture Success Of Brown-Headed Cowbirds, Scott C. Barras, Thomas Seamans, Jonathan Cepek Jan 2005

Effects Of Decoy Gender And Wing Clipping On Capture Success Of Brown-Headed Cowbirds, Scott C. Barras, Thomas Seamans, Jonathan Cepek

Wildlife Damage Management Conference Proceedings

Due to the risks that nest parasitism by brown-headed cowbirds (Molothrus ater) pose to breeding Kirtland’s Warblers (Dendroica kirtlandii) and other songbirds, refinement of existing cowbird trapping techniques and development of new techniques are needed to improve the efficiency of cowbird removal. We conducted experiments during 1999-2002 to determine if the use of male and female decoys affected capture rates of cowbirds, and to determine if clipping primaries on one wing of female decoys to prevent escapes affected cowbird capture success. These experiments were conducted using 6 permanently placed modified Australian crow traps (decoy traps) measuring …


Demographic And Spatial Responses Of Coyotes To Changes In Food And Exploitation, Eric Gese Jan 2005

Demographic And Spatial Responses Of Coyotes To Changes In Food And Exploitation, Eric Gese

Wildlife Damage Management Conference Proceedings

Lethal control for reducing carnivore populations is a contentious issue throughout the world. While computer simulations have been developed modeling the effects of population reduction on coyote (Canis latrans) population parameters, testing these hypotheses with empirical data from the field is lacking. We documented the demographic and spatial responses of coyotes to changes in the levels of food resources and human exploitation on the Piñon Canyon Maneuver Site, southeastern Colorado. We captured, radio-collared, and tracked 92 (53 M: 39 F) coyotes from March 1983 to April 1989. Of these, 74 animals were residents from 32 packs, plus 12 …


Observations On The Use Of The Gnrh Vaccine Gonacon™ In Male White-Tailed Deer (Odocoileus Virginianus), G. Killian, D. Wagner, L. Miller Jan 2005

Observations On The Use Of The Gnrh Vaccine Gonacon™ In Male White-Tailed Deer (Odocoileus Virginianus), G. Killian, D. Wagner, L. Miller

Wildlife Damage Management Conference Proceedings

Observations made over an 11 year period during the development and evaluation of the GnRH vaccine GonaCon™ use in male white-tailed deer (Odocoileus virginianus) are summarized. Sexually mature bucks at the Penn State Deer Research Center were administered a single immunization of GonaCon™ in July. Some males were also given a second boost immunization in September. Compared to similar aged controls, testicular size for treated males was considerably reduced in the first and subsequent years of study, as were testosterone concentrations and sexual libido. During the first year, antler development was relatively normal leading to antler hardening, although …


Deer-Vehicle Crash Patterns Across Ecoregions In Michigan, Krishnan Sudharsan, Shawn Riley, Brent Riley, Brian Maurer Jan 2005

Deer-Vehicle Crash Patterns Across Ecoregions In Michigan, Krishnan Sudharsan, Shawn Riley, Brent Riley, Brian Maurer

Wildlife Damage Management Conference Proceedings

Deer-vehicle collisions (DVCs) impact the economic and social well being of humans. We examined large-scale patterns behind DVCs across 3 ecoregions: Southern Lower Peninsula (SLP), Northern Lower Peninsula (NLP), and Upper Peninsula (UP) in Michigan. A 3 component conceptual model of DVCs with drivers, deer, and a landscape was the framework of analysis. The conceptual model was parameterized into a parsimonious mathematical model. The dependent variable was DVCs by county by ecoregion and the independent variables were percent forest cover, percent crop cover, mean annual vehicle miles traveled (VMT), and mean deer density index (DDI) by county. A discriminant function …


Challenges Of Invasive Reptiles And Amphibians, William Pitt, Daniel Vice, Mike Pitzler Jan 2005

Challenges Of Invasive Reptiles And Amphibians, William Pitt, Daniel Vice, Mike Pitzler

Wildlife Damage Management Conference Proceedings

Although worldwide distributions of many amphibians and reptiles are declining, a handful of species are spreading rapidly throughout tropical regions of the world. The species that have the greatest effect tend to be generalist feeders, have high reproductive rates, attain large population sizes, and often due to their behavior and or small size, are easily transported or are difficult to detect. The most notable of these species include the coqui frog, cane toad, bullfrog, brown tree snake, and Burmese pythons. The effect of a few individuals typically is small but the combined effect of large populations can be devastating to …


Feral And Introduced Carnivores: Issues And Challenges, Gary Witmer, Bernice Constantin, Frank Boyd Jan 2005

Feral And Introduced Carnivores: Issues And Challenges, Gary Witmer, Bernice Constantin, Frank Boyd

Wildlife Damage Management Conference Proceedings

Feral and invasive carnivores have been intentionally or unintentionally introduced to many parts of the world for a variety of reasons. Once established, they have often caused significant impacts to endemic species because of their predatory nature and, in numerous cases, have altered ecosystem structure and function in important conservation areas. They can also cause competition for native predators, hybridization with native species, losses to livestock and companion animals, and disease hazards. We provide examples of the extent of introductions, resulting impacts, and efforts to control or eradicate these populations. Working with introduced or feral carnivores presents many challenges to …


Alien Birds In North America – Challenges For Wildlife Managers, Michael L. Avery, Eric A. Tillman Jan 2005

Alien Birds In North America – Challenges For Wildlife Managers, Michael L. Avery, Eric A. Tillman

Wildlife Damage Management Conference Proceedings

In Executive Order 13112 “Invasive Species”, an alien species is defined as one “that is not native” to a particular ecosystem. In North America today, there are nearly 100 alien bird species with self-sustaining populations. These include numerous game birds (primarily gallinaceous birds) and escaped pet birds (primarily psittacine species). Others, such as house sparrows (Passer domesticus), European starlings (Sturnus vulgaris), and mute swan (Cygnus olor), were originally introduced for aesthetic reasons or to control agricultural insect pests. The establishment of alien bird populations through purposeful or accidental introductions has resulted in numerous problems …


Overview Of Impacts Of Feral And Introduced Ungulates On The Environment In The Eastern United States And Caribbean, Martin Lowney, Paul Schoenfeld, William Haglan, Gary Witmer Jan 2005

Overview Of Impacts Of Feral And Introduced Ungulates On The Environment In The Eastern United States And Caribbean, Martin Lowney, Paul Schoenfeld, William Haglan, Gary Witmer

Wildlife Damage Management Conference Proceedings

Non-native wild and feral ungulates have been introduced throughout the world for many centuries. Often the reasons for introductions were narrow in scope and benefits or the ungulates escaped or were released. Justifications for some introductions have included providing hunting opportunity, meeting cultural and dietary needs of people, fund raising, and aesthetics. Evaluations about the impacts to the environment, native wildlife, livestock, and people were most likely looked at in a narrow prism or not fully evaluated. Ungulates commonly introduced in the Eastern United States and Caribbean islands over the last 150 years included white-tailed deer, sika deer, hogs, horses, …


Management Of Wolf-Livestock Conflicts In Minnesota, William Paul Jan 2005

Management Of Wolf-Livestock Conflicts In Minnesota, William Paul

Wildlife Damage Management Conference Proceedings

In 1975, the gray wolf (Canis lupus) population in Minnesota was protected by the federal Endangered Species Act (USA). At that time, there were 500-750 wolves. By 2004, the population had grown to an estimated 3,020 wolves. Over time, conflicts between wolves and livestock increased. Wolf depredation control programs have been conducted by the U.S. Fish and Wildlife Service (1975-1986) and by the U.S. Department of Agriculture’s Wildlife Services program (1986 to present). In 1978, Minnesota’s wolves were reclassified from endangered to threatened which allowed authorized federal agents to lethally remove wolves that had depredated on livestock or …


The Role Of Raccoons In The Ecology Of Bovine Tuberculosis, Kurt C. Vercauteren, Holly Smith, Justin Stevenson Jan 2005

The Role Of Raccoons In The Ecology Of Bovine Tuberculosis, Kurt C. Vercauteren, Holly Smith, Justin Stevenson

Wildlife Damage Management Conference Proceedings

Bovine tuberculosis is a contagious bacterial disease that has had significant socioeconomic impacts on the region of northern lower Michigan. The role raccoons may play in the ecology and maintenance of the disease on farms in the core disease is unknown. Preliminary results of 61 radio collared raccoons have yielded a better understanding of raccoon movement and habitat use within an agricultural complex. Preliminary analysis of raccoons suggests annual home range sizes of .824 km2 and .608 km2 for males and females, respectively. Additionally raccoons and cattle have been documented at resource interfaces, further illustrating the potential for …


Taking An Endemically Infected Bovine Tb Area Through To Livestock Clearance. A Case Study Of West Taupo, New Zealand, Kevin Nicholas Jan 2005

Taking An Endemically Infected Bovine Tb Area Through To Livestock Clearance. A Case Study Of West Taupo, New Zealand, Kevin Nicholas

Wildlife Damage Management Conference Proceedings

The Pest Management Strategy for Bovine Tuberculosis (Tb) in New Zealand aims to achieve efficient freedom from Tb by 2013 and to eradicate the disease from livestock and wildlife. The West Taupo area, in the central North Island of New Zealand, was chronically infected with Tb in both domestic livestock herds (cattle and deer) and within wildlife populations (brushtail possum, ferret, feral deer and pigs). Through the development and implementation of a technically innovative management plan, this area is now approaching Tb free status. The case study / management plan reported here discusses the operational techniques and strategies that were …


Fence-Line Interactions Among Farmed And Free-Ranging Cervids: Preliminary Results, Kurt C. Vercauteren, Justin Fischer, Robert Pooler, Michael J. Lavelle, Greg Phillips Jan 2005

Fence-Line Interactions Among Farmed And Free-Ranging Cervids: Preliminary Results, Kurt C. Vercauteren, Justin Fischer, Robert Pooler, Michael J. Lavelle, Greg Phillips

Wildlife Damage Management Conference Proceedings

Occurrences of disease outbreaks within and near captive cervid (mule deer (Odocoileus hemionus), white-tailed deer (Odocoileus virginianus), and Rocky Mountain elk (Cervus elaphus nelsoni)) farms have recently drawn attention to these facilities. Some state wildlife and agricultural agencies have pondered making double fencing mandatory or otherwise increasing regulation of captive operations. Diseases such as Chronic Wasting Disease (CWD) and Bovine Tuberculosis (bovine TB) are a threat to captive and free-ranging cervid populations. Concerns over these and other diseases being transmitted from captive to wild cervids, and vice versa, have increased. In most cases, captive …


Preliminary Serologic Survey Of Selected Diseases And Movements Of Feral Swine In Texas, A. Christy Wykoff, Scott Henke, Tyler Campbell, David G. Hewitt, Kurt C. Vercauteren Jan 2005

Preliminary Serologic Survey Of Selected Diseases And Movements Of Feral Swine In Texas, A. Christy Wykoff, Scott Henke, Tyler Campbell, David G. Hewitt, Kurt C. Vercauteren

Wildlife Damage Management Conference Proceedings

Feral swine (Sus scrofa) populations occur throughout eastern, central, and southern Texas, and their populations appear to be increasing. Despite their abundance and wide distribution, little is known about their range and interaction with domestic animals. In the last decade the national pork production industry has enforced an eradication program for economically detrimental swine diseases such as pseudorabies and brucellosis. It is hypothesized that feral hogs can be reservoirs that could reintroduce diseases to disease-free domestic swine herds. The objectives of this on-going project are to determine the prevalence of selected swine diseases that exist within feral hog …


The Eradication Of Bovine Tuberculosis From Infected Wildlife Populations: A New Zealand Scenario, Gary J. E. Knowles, Mark Hunter, Amy Rush Jan 2005

The Eradication Of Bovine Tuberculosis From Infected Wildlife Populations: A New Zealand Scenario, Gary J. E. Knowles, Mark Hunter, Amy Rush

Wildlife Damage Management Conference Proceedings

The Animal Health Board (AHB) is the agency responsible for controlling bovine tuberculosis (Tb) in New Zealand. In 2000, the AHB embarked on a strategy designed to reduce the annual period prevalence of Tb infected cattle and farmed deer herds from 1.67% to 0.2% by 2012/13. Under current rules of the Office International des Epizooties (OIE) this would allow New Zealand to claim freedom from Tb. The epidemiology of Tb in New Zealand is largely influenced by wildlife reservoirs of infection and control of Tb vector populations is central to the elimination of Tb from New Zealand’s cattle and deer …


Estimating Drc-1339 Mortality Using Bioenergetics: A Case Study Of European Starlings, H. Jeffrey Homan, Randal S. Stahl, John Johnston, George M. Linz Jan 2005

Estimating Drc-1339 Mortality Using Bioenergetics: A Case Study Of European Starlings, H. Jeffrey Homan, Randal S. Stahl, John Johnston, George M. Linz

Wildlife Damage Management Conference Proceedings

We developed a bioenergetics model for European starlings (Sturnus vulgaris) that estimated mortality from baitings with CU Bird Carrier pellets treated with 1% DRC-1339 Concentrate and diluted 5:1 (untreated:treated pellets). A bioenergetic analysis of heat and radiative energy exchanges between the starling body surface and surrounding environment was converted to daily caloric demand based on a steady-state energy balance. The amount of Bird Carrier eaten per starling was governed by subroutines in the model that used probability distributions to simulate variability in dietary intake at the bait site. Mortality was estimated through dose-response regression analysis. Compared to onsite …