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Articles 201931 - 201960 of 1739314
Full-Text Articles in Entire DC Network
Upcycling Imperfect Broccoli And Carrots Into Healthy Snacks Using An Innovative 3d Food Printing Approach, Safoura Ahmadzadeh, Taylor Clary, Alex Rosales, Ali Ubeyitogullari
Upcycling Imperfect Broccoli And Carrots Into Healthy Snacks Using An Innovative 3d Food Printing Approach, Safoura Ahmadzadeh, Taylor Clary, Alex Rosales, Ali Ubeyitogullari
Food Science Faculty Publications and Presentations
Vegetables are healthy foods with nutritional benefits; however, nearly one-third of the world's vegetables are lost each year, and some of the losses happen due to the imperfect shape of the vegetables. In this study, imperfect vegetables (i.e., broccoli and carrots) were upcycled into freeze-dried powders to improve their shelf-life before they were formed into food inks for 3D printing. The rheology of the food inks, color analysis of the uncooked and cooked designs, and texture analysis of the cooked designs were determined. The inks with 50% and 75% vegetables provided the best printability and shape fidelity. 3D printing at …
Oral Rabies Vaccination Of Raccoons (Procyon Lotor) Across A Development Intensity Gradient In Burlington, Vermont, Usa, 2015–2017, Emily M. Beasley, Kathleen M. Nelson, Dennis Slate, Amy T. Gilbert, Frederick E. Pogmore, Richard B. Chipman, Amy J. Davis
Oral Rabies Vaccination Of Raccoons (Procyon Lotor) Across A Development Intensity Gradient In Burlington, Vermont, Usa, 2015–2017, Emily M. Beasley, Kathleen M. Nelson, Dennis Slate, Amy T. Gilbert, Frederick E. Pogmore, Richard B. Chipman, Amy J. Davis
United States Department of Agriculture Wildlife Services: Staff Publications
Management of the raccoon rabies virus variant in North America is conducted primarily using oral rabies vaccination (ORV). When a sufficient proportion of the population is vaccinated (60%), rabies transmission can be eliminated. To date, ORV programs have successfully controlled and eliminated raccoon rabies in rural areas, but there has been less success in urban areas. We studied the proportions of rabies virus neutralizing antibodies (RVNA) in a raccoon (Procyon lotor) population during a 3-year ORV trial in developed areas of Burlington, Vermont, United States. We used a modified N-mixture model to estimate raccoon abundance, RVNA seroprevalence, and …
Assessing The Efficiency Of Local Rabies Vaccination Strategies For Raccoons (Procyon Lotor) In An Urban Setting, Guillaume Bastille-Rousseau, Nicole T. Gorman, Katherine M. Mcclure, Larissa Nituch, Tore Buchanan, Richard B. Chipman, Amy T. Gilbert, Kim M. Pepin
Assessing The Efficiency Of Local Rabies Vaccination Strategies For Raccoons (Procyon Lotor) In An Urban Setting, Guillaume Bastille-Rousseau, Nicole T. Gorman, Katherine M. Mcclure, Larissa Nituch, Tore Buchanan, Richard B. Chipman, Amy T. Gilbert, Kim M. Pepin
United States Department of Agriculture Wildlife Services: Staff Publications
Raccoon rabies virus (RRV) has been managed using multiple vaccination strategies, including oral rabies vaccination and trap-vaccinate-release (TVR). Identifying a rabies vaccination strategy for an area is a nontrivial task. Vaccination strategies differ in the amount of effort and monetary costs required to achieve a particular level of vaccine seroprevalence (efficiency). Simulating host movement relative to different vaccination strategies in silico can provide a useful tool for exploring the efficiency of different vaccination strategies. We refined a previously developed individual-based model of raccoon movement to evaluate vaccination strategies for urban Hamilton, Ontario, Canada. We combined different oral rabies vaccination baiting …
Limitations Of Invasive Snake Control Tools In The Context Of A New Invasion On An Island With Abundant Prey, Shane R. Siers, Melia G. Nafus, Jereid E. Calaor, Rachel M. Volsteadt, Matthew S. Grassi, Megan Volsteadt, Aaron F. Collins, Patrick D. Barnhart, Logan T. Huse, Amy A. Yackel Adams, Diane L. Vice
Limitations Of Invasive Snake Control Tools In The Context Of A New Invasion On An Island With Abundant Prey, Shane R. Siers, Melia G. Nafus, Jereid E. Calaor, Rachel M. Volsteadt, Matthew S. Grassi, Megan Volsteadt, Aaron F. Collins, Patrick D. Barnhart, Logan T. Huse, Amy A. Yackel Adams, Diane L. Vice
United States Department of Agriculture Wildlife Services: Staff Publications
In October 2020, a new population of invasive brown treesnakes (Boiga irregularis) was discovered on the 33-ha Cocos Island, 2.5 km off the south coast of Guam, United States. Cocos Island is a unique conservation resource, providing refuge for many lizards and birds, including endangered species, which were extirpated from mainland Guam by invasive predators including brown treesnakes. We sought to evaluate the usefulness of toxic baiting with acetaminophen-treated carrion baits and cage trapping, common tools for the control of brown treesnakes on mainland Guam, as potential eradication tools on Cocos Island. We evaluated multiple bait types and …
Site-Specific Space Use And Resource Selection By Black Vultures (Coragyps Atratus) In The Southeastern Usa, Betsy Evans, John S. Humphrey, Eric A. Tillman, Michael L. Avery, Bryan M. Kluever
Site-Specific Space Use And Resource Selection By Black Vultures (Coragyps Atratus) In The Southeastern Usa, Betsy Evans, John S. Humphrey, Eric A. Tillman, Michael L. Avery, Bryan M. Kluever
United States Department of Agriculture Wildlife Services: Staff Publications
North American populations of Black Vultures Coragyps atratus have increased and expanded their distribution in the southern and eastern USA. In conjunction with these patterns has been a rise in human–vulture conflicts. To improve our understanding of space use patterns and better inform management, we evaluated the movements of Black Vultures (n = 23) in the southeastern USA using a long-term GPS tracking database. Our specific objectives were to: (1) quantify home-range sizes in relation to season and geographical study location and (2) examine within-home-range resource selection to identify landscape and anthropogenic factors influencing roost and diurnal space use. …
Treatment With The Immunocontraceptive Vaccine, Gonacon, Induces Temporary Fertility Control In Free-Ranging Prairie Dog Populations In Colorado, Usa, Aaron B. Shiels, Jackson Runte, Emily W. Ruell, Douglas C. Eckery, Gary W. Witmer, Daniel J. Salkeld
Treatment With The Immunocontraceptive Vaccine, Gonacon, Induces Temporary Fertility Control In Free-Ranging Prairie Dog Populations In Colorado, Usa, Aaron B. Shiels, Jackson Runte, Emily W. Ruell, Douglas C. Eckery, Gary W. Witmer, Daniel J. Salkeld
United States Department of Agriculture Wildlife Services: Staff Publications
Context
Prairie dogs (Cynomys spp.) are rodents enjoyed by some humans; yet, they cause crop and property damage, and carry zoonotic disease. Non-lethal control of prairie dogs is of interest in urban/suburban settings. The injectable immunocontraceptive vaccine GonaCon (active ingredient is gonadotropin-releasing hormone [GnRH]) has been shown to be effective at reducing fertility in equine and deer, and is a US EPA-registered vaccine for use in these ungulate species.
Aims
To conduct a replicated field study to test efficacy of GonaCon in black-tailed prairie dogs (C. ludovicianus), and if found to be efficacious, to help facilitate …
Comparison Of Ketamine-Xylazine, Butorphanol-Azaperone-Medetomidine, And Nalbuphine-Medetomidine-Azaperone For Raccoon (Procyon Lotor) Immobilization, Shylo R. Johnson, Christine K. Ellis, Chad Wickham, Molly R. Selleck, Amy T. Gilbert
Comparison Of Ketamine-Xylazine, Butorphanol-Azaperone-Medetomidine, And Nalbuphine-Medetomidine-Azaperone For Raccoon (Procyon Lotor) Immobilization, Shylo R. Johnson, Christine K. Ellis, Chad Wickham, Molly R. Selleck, Amy T. Gilbert
United States Department of Agriculture Wildlife Services: Staff Publications
Raccoons (Procyon lotor) are frequently handled using chemical immobilization in North America for management and research. In a controlled environment, we compared three drug combinations: ketamine-xylazine (KX), butorphanol-azaperone-medetomidine (BAM), and nalbuphinemedetomidine- azaperone (NalMed-A) for raccoon immobilization. In crossover comparisons, raccoons received a mean of the following: 8.66 mg/kg ketamine and 1.74 mg/kg xylazine (0.104 mL/kg KX); 0.464 mg/kg butorphanol, 0.155 mg/kg azaperone, and 0.185 mg/kg medetomidine (0.017 mL/kg BAM); and 0.800 mg/kg nalbuphine, 0.200 mg/kg azaperone, and 0.200 mg/kg medetomidine (0.020 mL/kg NalMed-A). Induction time was shortest with KX (mean6SE, 10.060.7 min) and longest with NalMed-A (13.061.3 min). …
Distribution And Prevalence Of Antibodies To Trichinella Spp. And Toxoplasma Gondii In Wild Pigs (Sus Scrofa) In The United States, Christopher A. Cleveland, Ellen Haynes, Katherine C. Callaghan, Alinde Fojtik, Sarah Coker, Emily Doub, Vienna R. Brown, Ania A. Majewska, Michael J. Yabsley
Distribution And Prevalence Of Antibodies To Trichinella Spp. And Toxoplasma Gondii In Wild Pigs (Sus Scrofa) In The United States, Christopher A. Cleveland, Ellen Haynes, Katherine C. Callaghan, Alinde Fojtik, Sarah Coker, Emily Doub, Vienna R. Brown, Ania A. Majewska, Michael J. Yabsley
United States Department of Agriculture Wildlife Services: Staff Publications
Invasive wild pigs (Sus scrofa) are a reservoir for over 100 viral, bacterial, and parasitic pathogens that are transmissible to humans, livestock, domestic animals, and wildlife in North America. Numerous historical local surveys and results from a nation-wide survey (2006–2010) indicated that wild pigs in the United States act as reservoirs for Trichinella spp. and Toxoplasma gondii, two zoonotic pathogens of importance for human and animal health. Since that time, wild pig populations have expanded and increased in density in many areas. Population expansion of wild pigs creates opportunities for the introduction of pathogens to new areas …
Seroprevalence, Blood Chemistry, And Patterns Of Canine Parvovirus, Distemper Virus, Plague, And Tularemia In Free-Ranging Coyotes (Canis Latrans) In Northern New Mexico, Usa, Leah M. White, Suzanne J. Gifford, Gail Kaufman, Eric M. Gese, Mark A. Peyton, Robert R. Parmenter, James W. Cain Iii
Seroprevalence, Blood Chemistry, And Patterns Of Canine Parvovirus, Distemper Virus, Plague, And Tularemia In Free-Ranging Coyotes (Canis Latrans) In Northern New Mexico, Usa, Leah M. White, Suzanne J. Gifford, Gail Kaufman, Eric M. Gese, Mark A. Peyton, Robert R. Parmenter, James W. Cain Iii
United States Department of Agriculture Wildlife Services: Staff Publications
Wildlife diseases have implications for ecology, conservation, human health, and health of domestic animals. They may impact wildlife health and population dynamics. Exposure rates of coyotes (Canis latrans) to pathogens such as Yersinia pestis, the cause of plague, may reflect prevalence rates in both rodent prey and human populations. We captured coyotes in north-central New Mexico during 2005–2008 and collected blood samples for serologic surveys. We tested for antibodies against canine distemper virus (CDV, Canine morbillivirus), canine parvovirus (CPV, Carnivore protoparvovirus), plague, tularemia (Francisella tularensis), and for canine heartworm (Dirofilaria immitis) antigen. Serum …
Characterization Of Recent Wild Pig‑Vehicle Collisions In Georgia, Usa, Jeremiah L. Psiropoulos, Emily Howe, John J. Mayer, Sophie C. Mckee
Characterization Of Recent Wild Pig‑Vehicle Collisions In Georgia, Usa, Jeremiah L. Psiropoulos, Emily Howe, John J. Mayer, Sophie C. Mckee
United States Department of Agriculture Wildlife Services: Staff Publications
Vehicle collisions with wild pigs (Sus scrofa) are reported almost everywhere this species is found. However, this is one of the least studied and characterized forms of damage that these invasive animals cause in the United States (US). We analyzed 518 wild pig-vehicle collisions (WPVCs) that took place statewide in Georgia between 2015 and 2021. From that dataset, we analyzed several parameters in order to better understand and characterize these accidents on a scale that had previously not been done in the US. Wild pig-vehicle collisions were reported from 105 out of the 159 counties in Georgia, increasing …
Expanding Cwd Disease Surveillance Options Using Environmental Contamination At Deer Signposts, Miranda H. J. Huang, Steve Demarais, Alejandro Banda, Bronson K. Strickland, Anna Grace Welch, Scoty Hearst, Stuart Lichtenberg, Allan Houston, Kim M. Pepin
Expanding Cwd Disease Surveillance Options Using Environmental Contamination At Deer Signposts, Miranda H. J. Huang, Steve Demarais, Alejandro Banda, Bronson K. Strickland, Anna Grace Welch, Scoty Hearst, Stuart Lichtenberg, Allan Houston, Kim M. Pepin
United States Department of Agriculture Wildlife Services: Staff Publications
1. Environmental surveillance can allow early detection of diseases, which increases management options and can improve disease trajectories. Chronic wasting disease (CWD) in cervids is a significant prion disease that has been spreading across North America since the 1960s, leading to cervid population declines and concern from hunters and state wildlife agencies. White-tailed deer have a unique breeding season behavior called scraping, where they deposit urine and saliva at shared sites. Since both these fluids can contain CWD prions, scrape sites have the potential to serve as sentinel sites for environmental surveillance of CWD.
2. To examine this potential, we …
Wildlife Vaccination Strategies For Eliminating Bovine Tuberculosis In White-Tailed Deer Populations, Aakash Pandey, Abigail B. Feuka, Melinda Cosgrove, Megan Moriarty, Anthony Duffiney, Kurt C. Vercauteren, Henry Campa Iii, Kim M. Pepin
Wildlife Vaccination Strategies For Eliminating Bovine Tuberculosis In White-Tailed Deer Populations, Aakash Pandey, Abigail B. Feuka, Melinda Cosgrove, Megan Moriarty, Anthony Duffiney, Kurt C. Vercauteren, Henry Campa Iii, Kim M. Pepin
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.
Comprehensive Economic Impacts Of Wild Pigs On Producers Of Six Crops In The South-Eastern Us And California, Sophie C. Mckee, John J. Mayer, Stephanie A. Shwiff
Comprehensive Economic Impacts Of Wild Pigs On Producers Of Six Crops In The South-Eastern Us And California, Sophie C. Mckee, John J. Mayer, Stephanie A. Shwiff
United States Department of Agriculture Wildlife Services: Staff Publications
Wild pigs (Sus scrofa) cause damage to agricultural crops in their native range as well asin the portions of the globe where they have been introduced. In the US, states with the highest introduced wild pig populations are Alabama, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, Missouri, North Carolina, South Carolina, and Texas. The present study summarizes thefirst survey-based effort to value the full extent of wild pig damage to producers of six crops in these 11 US states. The survey was distributed by the USDA National Agricultural Statistical Service in the summer of 2022 to a sample of …
African Swine Fever At The Wildlife-Livestock Interface: Challenges For Management And Outbreak Response Within Invasive Wild Pigs In The United States, Vienna R. Brown, Ryan S. Miller, Kim M. Pepin, Keith M. Carlisle, Merril A, Cook, Cole F. Vanicek, Lindsey K. Holmstrom, Lisa T. Rochette, Timothy J. Smyser
African Swine Fever At The Wildlife-Livestock Interface: Challenges For Management And Outbreak Response Within Invasive Wild Pigs In The United States, Vienna R. Brown, Ryan S. Miller, Kim M. Pepin, Keith M. Carlisle, Merril A, Cook, Cole F. Vanicek, Lindsey K. Holmstrom, Lisa T. Rochette, Timothy J. Smyser
United States Department of Agriculture Wildlife Services: Staff Publications
African swine fever (ASF) causes significant morbidity and mortality in both domestic and wild suids (Sus scrofa), and disease outbreaks convey profound economic costs to impacted industries due to death loss, the cost of culling exposed/infected animals as the primary disease control measure, and trade restrictions. The co-occurrence of domestic and wild suids significantly complicates ASF management given the potential for wild populations to serve as persistent sources for spillover. We describe the unique threat of African swine fever virus (ASFV) introduction to the United States from epidemiological and ecological perspectives with a specific focus on disease management at the …
Seasonal Efficacy And Risks From A Sodium Nitrite Toxic Bait For Wild Pigs, Nathan P. Snow, Michael P. Glow, Justin A. Foster, Kurt C. Vancauteren
Seasonal Efficacy And Risks From A Sodium Nitrite Toxic Bait For Wild Pigs, Nathan P. Snow, Michael P. Glow, Justin A. Foster, Kurt C. Vancauteren
United States Department of Agriculture Wildlife Services: Staff Publications
Background
Wild pigs (Sus scrofa) are an invasive and destructive species throughout many regions of the world. A sodium nitrite (SN) toxic bait is currently used in Australia and being developed for use in the US and other countries to combat the increasing populations of wild pigs. In the US, efforts to modify the Australian SN-toxic bait and baiting strategy have focused on reducing issues with non-target animals accessing the SN-toxic bait spilled outside of bait stations by wild pigs. We tested and compared modifications for efficacy (with wild pigs) and hazards (with non-targets) in north-central Texas, US during summer …
Overview Of Global Wildlife–Livestock Interfaces: The Array Of Conflicts And Strategies To Mitigate Them, Kurt C. Vercauteren, Stewart Breck
Overview Of Global Wildlife–Livestock Interfaces: The Array Of Conflicts And Strategies To Mitigate Them, Kurt C. Vercauteren, Stewart Breck
United States Department of Agriculture Wildlife Services: Staff Publications
Implications
Wildlife–livestock conflict can be broadly categorized as either competition for resources, disease transmission between wildlife and domestic species, or predation.
Management strategies can either focus on management of the livestock or management of the wildlife. Dynamic integration of both these strategies likely provides the best solution in many scenarios.
Reducing conflict and maintaining ecologically appropriate and viable populations of wildlife and thriving human endeavors should be the ultimate goal.
Evaluation Of Contingency Actions To Control The Spread Of Raccoon Rabies In Ohio And Virginia, Amy J. Davis, Richard B. Chipman, Kathleen M. Nelson, Betsy S. Haley, Jordana D. Kirby, Xiaoyue Ma, Ryan M. Wallace, Amy. T. Gilbert
Evaluation Of Contingency Actions To Control The Spread Of Raccoon Rabies In Ohio And Virginia, Amy J. Davis, Richard B. Chipman, Kathleen M. Nelson, Betsy S. Haley, Jordana D. Kirby, Xiaoyue Ma, Ryan M. Wallace, Amy. T. Gilbert
United States Department of Agriculture Wildlife Services: Staff Publications
The raccoon (Procyon lotor) variant of the rabies virus (RRV) is enzootic in the eastern United States and oral rabies vaccination (ORV) is the primary strategy to prevent and control landscape spread. Breaches of ORV management zones occasionally occur, and emergency “contingency” actions may be implemented to enhance local control. Contingency actions are an integral part of landscape-scale wildlife rabies management but can be very costly and routinely involve enhanced rabies surveillance (ERS) around the index case. We investigated two contingency actions in Ohio (2017–2019 and 2018–2021) and one in Virginia (2017–2019) using a dynamic, multi-method occupancy approach to examine …
Use Of Rhodamine B As A Biomarker In A Simulated Oral Vaccine Deployment Against Bovine Tuberculosis In White-Tailed Deer, David Dressel, Kurt Vercauteren, Michael Lavelle, Nathan P. Snow, Henry Campa Iii
Use Of Rhodamine B As A Biomarker In A Simulated Oral Vaccine Deployment Against Bovine Tuberculosis In White-Tailed Deer, David Dressel, Kurt Vercauteren, Michael Lavelle, Nathan P. Snow, Henry Campa Iii
United States Department of Agriculture Wildlife Services: Staff Publications
Introduction Free-ranging white-tailed deer (Odocoileus virginianus) in northeastern lower Michigan, United States are a self-sustaining reservoir for bovine tuberculosis (bTB). Farm mitigation practices, baiting bans, and antlerless deer harvests have been ineffective in eliminating bTB in white-tailed deer and risks to cattle. The apparent prevalence has remained relatively constant in deer, prompting interest among wildlife researchers, managers, and veterinarians for an effective means of vaccinating deer against bTB. The commonly used human vaccine for bTB, Bacillus Calmette Guerin (BCG), is the primary candidate with oral delivery being the logical means for vaccinating deer.
Materials and methods We developed …
Identifying Priority Mitigation Areas For Human–Osprey Conflict, Natasha K. Murphy, Melanie R. Boudreau, Brian S. Dorr, Kate Slankard, Scott A. Rush
Identifying Priority Mitigation Areas For Human–Osprey Conflict, Natasha K. Murphy, Melanie R. Boudreau, Brian S. Dorr, Kate Slankard, Scott A. Rush
United States Department of Agriculture Wildlife Services: Staff Publications
Raptor nests on human‐built structures represent a significant source of conflict, as they can result in bird mortality, fires, or power outages due to falling nest materials or animals connecting with energized conductors. Power companies typically try to mitigate these conflicts to avoid service disruptions. Performing mitigation measures across all potentially problematic power infrastructure is generally not a practical solution given logistical, time, or budgetary constraints. Therefore, there is a need for quantitative, landscapescale tools to identify conflict risk and prioritize mitigation. We examined the influence of habitat and transmission infrastructure distribution on the potential risk of osprey (Pandion …
Estimating Landscape Spread Of A Low-Prevalence Disease Using Multiple Surveillance Methods, Abigail Feuka, Aakash Pandey, Melinda Cosgrove, Megan Moriarty, Anthony Duffiney, Henry Campa Iii, Kurt C. Vercuteren, Kimberly M. Pepin
Estimating Landscape Spread Of A Low-Prevalence Disease Using Multiple Surveillance Methods, Abigail Feuka, Aakash Pandey, Melinda Cosgrove, Megan Moriarty, Anthony Duffiney, Henry Campa Iii, Kurt C. Vercuteren, Kimberly M. Pepin
United States Department of Agriculture Wildlife Services: Staff Publications
1. Diseases occurring at low prevalence in free-ranging wildlife can be difficult to study and predict at a landscape scale. This problem is compounded by imperfect pathogen detection.
2. We used data from multiple surveillance methods to determine factors influencing spread of a low-prevalence disease, bovine tuberculosis (bTB), among white-tailed deer (Odocoileus virginianus) in a bTB endemic area over a 10-year period. We fit dynamic occupancy models to predict spatial spread of bTB through a county in Michigan, USA, within the bTB endemic area, while accounting for imperfect detection and a suite of ecological processes potentially driving bTB …
Efficacy Of An Inflatable Deterrent For Reducing New World Vulture Human‑Wildlife Conflict, Bryan M. Kluever, Betsy A. Evans, Noah M. Osterhoudt, Eric A. Tillman
Efficacy Of An Inflatable Deterrent For Reducing New World Vulture Human‑Wildlife Conflict, Bryan M. Kluever, Betsy A. Evans, Noah M. Osterhoudt, Eric A. Tillman
United States Department of Agriculture Wildlife Services: Staff Publications
Increasing urbanization coupled with spatial expansion and numerical increase of New World vulture populations has engendered a rise in human-vulture conflict, creating a need for effective tools to mitigate vulture-related damage. Visual frightening devices that mimic the presence of human or other predators can be employed in human-vulture conflict scenarios to increase perceived risk by the pest species, thereby eliciting an antipredator behavioral response, such as fleeing. One visual frightening device, inflatable scarecrows, recently proved effective at reducing passerine attendance at feral swine feeders, but their effectiveness when directed at other species and conflict scenarios has varied. Our primary objective …
Using Prescribed Fire And Biosolids Applications As Grassland Management Tools: Do Wildlife Respond?, Brian E. Washburn, Michael J. Begier
Using Prescribed Fire And Biosolids Applications As Grassland Management Tools: Do Wildlife Respond?, Brian E. Washburn, Michael J. Begier
United States Department of Agriculture Wildlife Services: Staff Publications
Prescribed burning is a management tool commonly used in forested ecosystems in the southeastern United States, but the influence of this method on grassland vegetation and wildlife in this geographic region is unknown. During 2009–2015, we conducted a study to determine if the application of prescribed burning and/or long-term biosolid applications alter plant communities and/or wildlife use of grassland areas at Marine Corps Air Station Cherry Point, Havelock, North Carolina. We monitored vegetation growth, measured plant community composition, and documented wildlife activity in four study plots for 3 years after the implementation of annual winter prescribed burns. Prescribed burning reduced …
Effects Of Pregnancy Prevention On Brucella Abortus Shedding In American Bison (Bison Bison), Pauline Nol, Rebecca Frey, Morgan Wehtje, Jack C. Rhyan, Patrick Ryan Clarke, Matthew Mccollum, Christine Quance, Douglas C. Eckery, Suelee Robbe-Austerman
Effects Of Pregnancy Prevention On Brucella Abortus Shedding In American Bison (Bison Bison), Pauline Nol, Rebecca Frey, Morgan Wehtje, Jack C. Rhyan, Patrick Ryan Clarke, Matthew Mccollum, Christine Quance, Douglas C. Eckery, Suelee Robbe-Austerman
United States Department of Agriculture Wildlife Services: Staff Publications
Products of parturition are the predominant source of Brucella abortus for transmission in bison (Bison bison). Our objective was to assess whether preventing pregnancy in Brucella-seropositive bison reduced B. abortus shedding. Brucella-seropositive and -seronegative bison from Yellowstone National Park, Wyoming, USA were used in a replicated experiment. Each of two replicates (rep1, rep2) included a group of seropositive females treated with a single dose of gonadotropin-releasing hormone-based immunocontraceptive (Treatment rep1, n = 15; Treatment rep2, n = 20) and an untreated group (Control rep1, n = 14; Control rep2, …
Effects Of The Immunocontraceptive Gonacon On Pregnancy In Brucella-Seropositive American Bison (Bison Bison), Rebecca K. Frey, Morgan E. Wehtje, Pauline Nol, Patrick R. Clarke, Jack C. Rhyan, Matthew P. Mccollum, Lowell A. Miller, Douglas C. Eckery
Effects Of The Immunocontraceptive Gonacon On Pregnancy In Brucella-Seropositive American Bison (Bison Bison), Rebecca K. Frey, Morgan E. Wehtje, Pauline Nol, Patrick R. Clarke, Jack C. Rhyan, Matthew P. Mccollum, Lowell A. Miller, Douglas C. Eckery
United States Department of Agriculture Wildlife Services: Staff Publications
The purpose of this study was to determine if the number of pregnancies in naturally infected Brucella abortus-positive bison (Bison bison) cows would be reduced over a period of 5 yr after one treatment with 3000 mg gonadotropin-releasing hormone immunocontraceptive (GonaCon) compared to a similar group of naturally infected B. abortus-positive bison cows not treated with GonaCon. In each of the 5 yr, GonaCon-treated cows produced fewer offspring in relation to number of cows than the nontreated cows. Fisher’s Exact test comparing offspring produced during the first reproductive season showed a significant difference between the …
Antipredator Blood-Squirting Defense In Horned Lizards (Phrynosoma): Chemical Isolation Of Plasma Component(S), Pogonomyrmex Ant Dietary Origin, And Evolution, Wade C. Sherbrooke, Bruce A. Kimball
Antipredator Blood-Squirting Defense In Horned Lizards (Phrynosoma): Chemical Isolation Of Plasma Component(S), Pogonomyrmex Ant Dietary Origin, And Evolution, Wade C. Sherbrooke, Bruce A. Kimball
United States Department of Agriculture Wildlife Services: Staff Publications
North American horned lizards of the genus Phrynosoma are largely myrmecophagous and squirt systemic blood from circumocular sinuses during encounters with certain mammalian predators. The predators react with distinct revulsion. Using bioassay-guided fractionation of blood plasma, we endeavored to identify the source and characteristics of the active chemical compound(s) responsible for this negative oral response. Our results of coyote bioassays and a series of novel mouse bioassay experiments were largely concordant. The active compound(s) was likely plasma-borne with a molecular weight (mw) of between 800 and 1,600. To identify the source of the active compound(s), we noted bioassay responses …
Internal And External Factors Affect Pair Mate Proximity In Captive Coyotes, Canis Latrans, Alexandra Turano, Stacey P. Brummer, Jeffrey T. Schultz, Julie Young, Sara M. Freeman
Internal And External Factors Affect Pair Mate Proximity In Captive Coyotes, Canis Latrans, Alexandra Turano, Stacey P. Brummer, Jeffrey T. Schultz, Julie Young, Sara M. Freeman
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.
Toxoplasma Gondii Survey In Waterfowl And Gulls From Eight Usa States, Sawsan Ammar, Tania J. Dawant, Janetta Kelly, Graham Hickling, Justin Brown, Kyle R. Van Why, Rebecca Poulson, Chunlei Su, Richard W. Gerhold Jr.
Toxoplasma Gondii Survey In Waterfowl And Gulls From Eight Usa States, Sawsan Ammar, Tania J. Dawant, Janetta Kelly, Graham Hickling, Justin Brown, Kyle R. Van Why, Rebecca Poulson, Chunlei Su, Richard W. Gerhold Jr.
United States Department of Agriculture Wildlife Services: Staff Publications
Sera from 391 waterbirds from eight USA states were tested for Toxoplasma gondii antibodies using the modified agglutination test. Fifteen different waterbird species (26.6%; n = 104) were seropositive. Of the adults, 25.4% (n = 52) showed a significantly higher T. gondii seroprevalence compared with juveniles (13.4%; n = 17); however, sex was not a significant factor.
Increased Bat Activity At Urban Water Sources: Implications For Cross-Species Transmission Of Bat Rabies To Mesocarnivores, Lias A. Hastings, Carol L. Chambers, David L. Bergman, Tad C. Theimer
Increased Bat Activity At Urban Water Sources: Implications For Cross-Species Transmission Of Bat Rabies To Mesocarnivores, Lias A. Hastings, Carol L. Chambers, David L. Bergman, Tad C. Theimer
United States Department of Agriculture Wildlife Services: Staff Publications
We examined the potential for urban water sources, specifically golf course ponds, to act as centers for rabies transmission from bats to mesocarnivores in the arid southwestern United States where surface water is often limited. Because residential housing can act as den and roost sites for both mesocarnivores and bats, we also examined the effect of housing density around water sources on activity. Using ultrasonic acoustic recorders to assess bat activity and camera traps to estimate mesocarnivore activity, we compared 14 pairs of wet and dry locations over two years by surveying twice during the summer, once prior to summer …
Experimental Assessment Of Laser Scarecrows For Reducing Avian Damage To Sweet Corn, Sean T. Manz, Kathryn E. Sieving, Rebecca N. Brown, Page E. Klug, Bryan M. Kluever
Experimental Assessment Of Laser Scarecrows For Reducing Avian Damage To Sweet Corn, Sean T. Manz, Kathryn E. Sieving, Rebecca N. Brown, Page E. Klug, Bryan M. Kluever
United States Department of Agriculture Wildlife Services: Staff Publications
Background
Birds damage crops, costing millions of dollars annually, and growers utilize a variety of lethal and nonlethal deterrents in an attempt to reduce crop damage by birds. We experimentally tested laser scarecrows for their effectiveness at reducing sweet corn (Zea mays) damage. We presented 18 captive flocks of free-flying European starlings (Sturnus vulgaris) with fresh sweet corn ears distributed on two plots where laser and control treatments were alternated each day and allowed each flock to forage over 5 days. In 16 trials, fresh sweet corn ears were mounted on wooden sticks distributed from 0 …
Coyotes In The Great Basin Desert Do Not Exhibit A Spatial Response Following The Removal Of Anthropogenic Water Sources, Nadine A. Pershyn, Eric M. Gese, Erica F. Stuber, Bryan M. Kluever
Coyotes In The Great Basin Desert Do Not Exhibit A Spatial Response Following The Removal Of Anthropogenic Water Sources, Nadine A. Pershyn, Eric M. Gese, Erica F. Stuber, Bryan M. Kluever
United States Department of Agriculture Wildlife Services: Staff Publications
Coyote (Canis latrans) range expansion into desert ecosystems has highlighted the role of anthropogenic water sources in arid ecosystems. Despite hypotheses that additional water facilitated this expansion, previous studies reported that coyotes did not exhibit a spatial or dietary response to removal of anthropogenic water. We used GPS data to examine if coyotes responded to water removal at a finer spatial scale than previously investigated. Our integrated step selection analysis did not find evidence that coyotes adjusted their distance to water following water removal. Vegetation was an important factor in habitat selection of coyotes, with riparian and agricultural …