The mechanical control of bushpig, Potamochoerus porcus, in Zimbabwe
Contributor(s): Michael La Grange
Bushpig, Potamocheorus porcus, occurring naturally in the high rainfall areas of Zimbabwe, have become a major threat to maize producers in the country. Traditional means of control including hunting have been unsuccessful in keeping the numbers to a tolerable level owing to the secretive and...
Trapping: A continuous integral part of a rodent control programme
Contributor(s): H.R. Shuyler, R.F. Sun Jr.
Trapping is usually considered a rodent control technique of minor importance. Due to the economic situation in the Dumaguete, Philippines program from which this report is drawn, regular trapping was a biological necessity. Four species of rodents and a shrew were of concern. A continuing daily...
DNA detection of foxes to prevent establishment in Tasmania
Contributor(s): Stephen D. Sarre, Rachel Walsch, Niccy Aitken, Alison Foster, Nick Mooney
The red fox (Vulpes vulpes) has wreaked havoc on mainland Australia’s environment and agricultural production since its introduction in the 1870s. Over the same period, the southern Australian island State of Tasmania has remained virtually fox-free, allowing its unique biodiversity to remain...
Cougar predation on livestock in New Mexico, January 1983 through June 1984
Contributor(s): Gary A. Littauer, Ronald J. White
A telephone survey was conducted in which the objective was to obtain information from the entire population of livestock producers in New Mexico who had losses to cougars (Felis concolor) in 1983 and the first six months of 1984. A total of 103 ranchers reported losses in 1983 and 60 reported...
A novel strategy for pocket gopher control
Contributor(s): Michael E.R. Godfrey
Current techniques for the control of pocket gophers use traps, fumigants or toxic baits. Trapping and fumigation are labor intensive and seldom effective in giving more than short-term relief. Toxic baiting usually uses baits that are rapidly degraded and although the resident gopher may be...
Developing a strategy of predator control for the protection of the California least tern: a case history
Contributor(s): Peter H. Butchko, Maynard A. Small
In recent years, predation has been determined to be a seriously limiting factor in the reproduction of the endangered California least tern (Sterna antillarum browni) at many of its nesting colonies. Among them is a major colony at Camp Pendleton Marine Corps Base near Oceanside, CA. Early...
Freshwater mussels (Bivalvia: Unionidae) in the Cajun prairie ecosystem in southwestern Louisiana
Contributor(s): Malcom F. Vidrine, Gail J. Quillman-Vidrine, Malcolm F. Vidrine II, Daniel J. Vidrine, Caroline E. Vidrine
Freshwater mussels (Bivalvia: Unionidae) once cobbled the stream bottoms in the Cajun Prairie ecosystem in south-western Louisiana. The development of canal systems for aboveground irrigation of rice fields during the last century provided additional habitat-often the canals were likewise cobbled...
Feral cat control in Britain; developing a rabies contingency strategy
Contributor(s): R.J.C. Page, D.H. Bennett
Feral cat (Felis catus) control is required for reasons of public health, the welfare of cats themselves, and rabies control should an outbreak occur in Britain. A prerequisite to the control of feral cat colonies would be establishing their location. A method for locating colonies was developed...
Progress on managaing cattail marshes with Rodeo® herbicide to desperse roosting blackbirds
Contributor(s): George M. Linz, David L. Bergman, William J. Bleier
In August and September 1989 and 1990, we aerially sprayed 8 cattail (Typha spp.) marshes with Rodeo® herbicide to begin evaluating its use for fragmenting dense cattail stands used by roosting blackbirds (Icterinae). Treated marshes were effectively eliminated as roost sites for blackbirds....
Predator control for the protection of the federally endangered Great Lakes Piping Plover (Charadrius melodus) at Dimmick's Point, North Manitou Island
Contributor(s): Kimberly Struthers, Patrick Ryan
The recovery plan for the federally endangered Great Lakes Piping Plover (Charadrius melodus) identifies the need for predator control/removal to increase Piping Plover chick fledging success. The U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services...
Avian vacuolar myelinopathy: a newly recognized fatal neurological disease of eagles, waterfowl and other birds
Contributor(s): John R. Fischer, Lynn A. Lewis, Tom Augspurger, Tonie E. Rocke
Since 1994, wildlife biologists and wildlife health specialists have worked to determine the cause of avian vacuolar myelinopathy (AVM), a neurologic disease of bald eagles (Haliaeetus leucocephalus) and other birds. The causes of morbidity and mortality in wildlife typically are determined...
Vampire bat control: a review and proposed research programme for Latin America
Contributor(s): Arthur M. Greenhall
In Latin America paralytic rabies transmitted by vampire bats is a major cause of death in cattle. This problem becomes more acute as countries attempt to increase livestock production to feed rapidly expanding human populations. Vaccination has been the principal weapon against rabies, however...
Hazards to wildlife associated with underground strychnine baiting for pocket gophers
Contributor(s): Paul L. Hegdal, Thomas A. Gatz
Under an Environmental Protection Agency (EPA) contract, we evaluated the hazards associated with strychnine baiting for pocket gophers (Geomys bursarius) with the burrow-builder. On the Sherburne National Wildlife Refuge, Minnesota, we treated 662 ha (1638 acres) with 0.5 percent...
Current changes to vertebrate pest management in New Zealand
Contributor(s): Peter C. Nelson
Vertebrate pest control in New Zealand is changing as a result of a reduction in state funding. Monetary assistance for control programs is being withdrawn at $0.8 million per year and currently is $5.4 million. This reduction affects several parts of the organization and the Agricultural Pests...
Radio-telemetry and geographical information systems to assess urban deer zoonoses
Contributor(s): Karmen M. Hollis, Christopher L. Anchor, James E. Chelsvig, Dwayne R. Etter, J. P. Dubey
Urban white-tailed deer (Odocoileus virginianus) populations can influence the epidemiology of many zoonotic diseases because they affect the distribution and abundance of pathogens and vectors. The risk of emerging zoonotic pathogens increases with human populations, as people have closer...
Grazing intensity effects on vegetation, livestock and non-game birds in North Dakota mixed- grass prairie
Contributor(s): Eric D. Salo, Kenneth F. Higgins, Bob D. Patton, Kristel K. Bakker, William T. Barker
We conducted studies in native prairie mixed-grass pastures in south~central North Dakota (U.S.A.) during 1989- 2003 to determine how different grazing intensities affected structural characteristics of vegetation, livestock production and the occurrence and density of grassland birds. Generally,...
Alligator nuisance control program in Texas: problem and process
Contributor(s): Lee Ann Johnson, David S. Lobpries, Bruce G. Thompson
Following protection of the American alligator (Alligator mississippiensis) in Texas beginning in 1969, alligator numbers have increased rapidly (Patter 1981). Such population increases led to the federal reclassification of the species from Endangered to Threatened--Similarity of Appearance in...
Plastic visual barriers were ineffective at reducing recolonization rates of prarie dogs
Contributor(s): Scott E. Hygnstrom
Two plastic visual barriers were ineffective in controlling expansion of 7 active black-tailed prairie dog (Cynomys ludovicianus) colonies and recolonization of 7 toxicant-treated sections of colonies. Barriers constructed with Sno-Strap, a 15.2- cm wide band of high-tensile polyethylene plastic,...
Fall food habits of double-crested cormorants in Arkansas
Contributor(s): Albert E. Bivings, Michael D. Hoy, Jeffrey W. Jones
One hundred forty-eight double-crested cormorants (Phalacrocorax auritus) were collected in October-December 1988. Some were collected while actively feeding, but most were collected at loafing or roosting areas. Of the 135 with fish in them, 79% contained gizzard shad (Dorosoma cepedianum) and...
Fertility control of California ground squirrels using GnRH immunocontraception
Contributor(s): Paul B. Nash, David K. James, Lucia T. Hui, Lowell A. Miller
Population of wildlife, such as California ground squirrels, can grow to the extent that they come in conflict with humans. Contraception is a method of population management under investigation that may be useful in situations where neither leaving the animals uncontrolled nor lethal control are...