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An Approach To The Design Of Target-Specific Vertebrate Pest Control Systems, Peter H. O'Brien

Vertebrate Pest Conference Proceedings: 12th (1986)

Vertebrate pest control has the dual objectives of maximizing efficacy and minimizing nontarget hazard. The task in design is to make these objectives complementary, rather than mutually exclusive. Historically, vertebrate pest control has emphasized target control as a single objective, with nontarget impact a subsequent, secondary consideration. This sequence necessarily constrains the capacity of the design process to minimize nontarget impact.

I describe a framework for the design of vertebrate pest control which is based on comparative evaluation of the socioecology of target and potential nontarget species. Using this approach, control systems are designed which focus on and exploit identified …

Bait Preference Field Study Of The California Ground Squirrel, Brenda D. Protopapas, A. Charles Crabb

Vertebrate Pest Conference Proceedings: 12th (1986)

A bait preference field study of the California ground squirrel (Spermophilus beecheyi beecheyi) was performed involving the comparison of the following untreated bait formulations fed ad lib.: oat groats, Ramik Green, and ZP Rodent Ag Bait. The study was performed on rangeland at California Polytechnic State University, San Luis Obispo, California, from March 11, 1984, to September 15, 1984.

Poor bait quality problems occurred in the early period of the study (March 11 to May 17), resulting in poor acceptance of both Ramik and Ag Bait. A descriptive analysis of this period is discussed. The statistical analysis of …

Approaches To Small-Holder Rodent Control, C. G. J. Richards

Vertebrate Pest Conference Proceedings: 12th (1986)

Rodents are now recognized as one of the most important pests damaging crops in countries as far apart as Indonesia, Tanzania and Venezuela (Benigno and Sanchez 1984, Taylor 1984, Williams and Vega 1984). Damage to crops such as rice may be devastating during periodic upsurges in rodent numbers, with yields often reduced by 50% or more. It is being increasingly recognized, however, that continual chronic losses, which commonly occur over very large areas, are economically more significant (Buckle et al. 1985), resulting in yield losses in the range of 5 to 10% of national crops every year in many countries …

Comparison Of Fumigant Gases Used For Rabbit Control In Great Britain, John Ross

Vertebrate Pest Conference Proceedings: 12th (1986)

The two most commonly used fumigant formulations, one generating hydrogen cyanide (HCN) and the other phosphine (PH3), were compared in paired field trials using the spoon-gassing technique. The two formulations were equally effective in reducing rabbit numbers seen in spotlight counts. The PH3 generating formulation was more convenient and slightly cheaper to use. Safety and humaneness aspects of the two formulations are discussed and alternative formulations (generating HCN and PH3) are considered. The potential usefulness (for rabbit control) of some other fumigant gases is briefly reviewed.

Agriculture And Forestry Rodent Problems And Control In Italy, Luciano A. Santini

Vertebrate Pest Conference Proceedings: 12th (1986)

Rodent pest problems and their control in Italy are reviewed. Two rats, Rattus norvegicus and Rattus rattus, and the field mouse, Apodemus sylvaticus, are often important pests both in rural and forestry areas. Other species, such as voles, Microtus arvalis and Microtus (Pitymys) savii, in orchards and in horticulture, and Sciurus vulgaris and Myoxus (Glis) glis in forestry, sometimes represent serious problems. For each species the kind of damage and control is recorded, and additional considerations are supplied to the public and private organizations responsible for rodent control.

Laboratory Efficacy Studies With Strychnine Baits On Pigeons, Edward F. Schafer Jr., Mary L. Eschen

Vertebrate Pest Conference Proceedings: 12th (1986)

Pigeons held under a fall and spring photoperiod-temperature regime consumed a maximum of 16.9 to 21.4 kernels of whole corn per hour with an average ranging from 7.6 to 12.4 kernels per hour. Peak consumption occurred during the first and/or next to last hour of the day with a secondary, but smaller, peak around noon. Corn consumption ranged from 91 to 112 kernels/bird/day and approximated daily consumption equal to 10% of an average bird's mass.

The acute oral LD50 of strychnine alkaloid to pigeons was estimated to be 7.73 mg/kg (95% Confidence Interval of 6.75 to 8.85). The LD90 was …

Rodent Control In East Africa, William R. Smythe

Vertebrate Pest Conference Proceedings: 12th (1986)

The nations of East Africa consist of Ethiopia, Somalia, Kenya, Uganda, Tanzania, Malawi, Mozambique and Zimbabwe. They encompass a widely varied topography, from coral strands to snow-capped mountains, rain forests to deserts, and tropical to temperate. In all these areas where soil and rainfall patterns permit, agricultural crops are grown. For the most part farming is of a subsistence nature being small single family plots. These farms make up to 90% of the farming in most of the East African nations. There are large farms in Kenya and Zimbabwe generally confined to the temperate uplands. Elsewhere there are large government …

Approaches To Coot Management In California, Valerie Van Way

Vertebrate Pest Conference Proceedings: 12th (1986)

Coot depredations have been documented in California since 1886, and shooting has been relied on as the principal means of mitigating damage. Immobilizing agents continue to offer promise as useful nonlethal tools for population reduction programs. Exploration of the use of tribromoethanol in coot capture is described, and the potential for other bird management techniques is discussed.

An Evaluation Of The Acute Oral Toxicity Of Brodifacoum To Birds, Michael E. R. Godfrey

Vertebrate Pest Conference Proceedings: 12th (1986)

Single acute doses of the rodenticide brodifacoum were administered orally to 13 species of birds which are at risk from accidental poisoning during rabbit or possum control operations. Median lethal dose values from less than 1 to more than 20 mg/kg were obtained for some species. Gulls and Canada geese appear to be particularly susceptible. Several species, particularly the gulls, waxeyes, sparrows, mallard ducks and harrier hawks, seem to be vulnerable to lead poisoning.

A Five-Year Evaluation Of The Silvicultural Treatments For The Control Of Squirrel Damage In Taiwan, Pao-Chang Kuo, Yue-Ken Liao

Vertebrate Pest Conference Proceedings: 12th (1986)

The Formosan red-bellied tree squirrel (Callosciurus erythraeus. ) is a pest animal that causes serious damage to many conifer plantations in Taiwan. Poisoning has been the major means to control the damage. The feasibility of forestry control through habitat manipulation has been evaluated during the past 5 years. The objective of this study was to investigate the effects of forest-tending operations on the activity and damage by squirrels. Forest-tending conducted included weeding and thinning. Test sites were at three Japanese cedar (Cryptomeria japonica) plantations located in Chitou. The results of this study revealed that squirrel activity in …

The Probe, Issue 61 - March 1986

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
March, 1986
Foreign News
Second Eastern Wildlife Damage Control Conference
Vasectomies for Horses
Herring and Black-backed Sea Gulls
“A Little Help From a Friend” by Eugene McFerran
Hunting
Coyotes vs. Antelopes
Rabies in Rodents

Efficacy Of A Carbon Monoxide Gas Cartridge Against Field Rodents, Deng Zhi, Zhao Wu Chang

Vertebrate Pest Conference Proceedings: 12th (1986)

Efficacy data of a gas cartridge are reported. The gas cartridge contains 50 g of potassium nitrate (27.5 g, 55%) mixed with sawdust (22.5 g, 45%). When ignited, it generates large amounts of carbon monoxide (avg. 23.46%) and carbon dioxide (avg. 26.26%). A mimic field trial was carried out on a winter day. The air temperature averaged 1.2°C, ranging from -3.3°C to +5°C. Sixteen adult albino rats were killed within 3 minutes exposure in a man-made burrow system, 200 cm long, with an inside diameter of 8 cm.

Field trials were conducted in different parts of China, and there were …

Results Of Eight Years' Examination Of The Habitats Of Residual Urban Norway Rat Populations After Eradication, Daniel Bajomi, Katalin Sasvari

Vertebrate Pest Conference Proceedings: 12th (1986)

In Budapest (population 2 million) 33 out of 100 buildings were rat-infested in the early seventies. Thus general deratization was decreed to cover the whole of the city in 1971 to 1972. As a result of the global eradication method applied, the rate of rat-infested premises could be reduced below 0.5% annually. After control the sparsely occurring rats could freely choose any of the habitats released for settling. The habitats of Budapest most preferred by Norway rats are presented after a wide-ranging investigation carried out over 8 years. Our examination data support and in some cases reveal the requirements of …

Barn Owls And Industry: Problems And Solutions, Lee R. Martin

Vertebrate Pest Conference Proceedings: 12th (1986)

Three methods were explored to eliminate damage caused by owl pellets and fecal droppings: exclusion; trapping; and sound deterrents including abstract sound, biosonic sound, and high frequency sound.

Initial successful results of various types of sound diminished with time to the point that owls adapted and ignored all sound repellents within a short period. Exclusion techniques were ineffective as owls would find ways around, through or between any non-permanent structure blocking entry through warehouse openings. Live-trapping and relocating owls was the only effective technique tested in this experimental program. Three trap methods were found effective, but trap success diminished with …

Protection With Vexar Cylinders From Damage By Meadow Voles Of Tree And Shrub Seedlings In Northeastern Alberta, Ronald W. Pauls

Vertebrate Pest Conference Proceedings: 12th (1986)

Vast areas of land will require reclamation and reforestation following oil sands development in northeastern Alberta. Greenhouse-grown tree and shrub seedlings used in reforestation may be clipped or girdled by meadow voles, especially during periods of high population density. The impact of partial girdling, the most common form of damage, varies among species. Reduced survival rates in seedlings girdled over as little as 50% of their circumference and reduced growth rates in seedlings girdled over as little as 25% of their circumference, have been noted. Plastic mesh cylinders (tradename Vexar) have proven effective in preventing seedling damage and durable in …

Richard Feinberg's Review Of Patrick Vinton Kirch And D. E. Yen's Tikopia: The Prehistory And Ecology Of A Polynesian Outlier, Richard Feinberg

Pacific Studies

No abstract provided.

Population, Migration, And Problems Of Atoll Development In The South Pacific, John Connell

Pacific Studies

No abstract provided.

The Prairie Naturalist Volume 18, No. 1. March 1986

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

TABLE OF CONTENTS

INVASION PATTERN MAPPING OF NON-SEEDED SPECIES ON A SHALLOWLY DISTURBED SEEDED SITE ▪ C. E. Grygiel, C. D. Bonham, and E. F. Redente

CHANGES IN THE LICHEN FLORA OF PIPESTONE NATIONAL MONUMENT, MINNESOTA ▪ G. D. Willson and T. W. Vinyard

INTERPOPULATION VARIABILITY IN MOUTHPARTS IN Scaphiopus bombifrons IN NEBRASKA (AMPHIBIA: PELOBATIDAE) ▪ T. L. Potthoff and J. D. Lynch

PLANTS AND INVERTEBRATES IN A PRAIRIE WETLAND DURING DUCK BROOD-REARING J. W. McCrady, W. A. Wentz, and R. L. Linder

OCCURRENCE OF …

The Prairie Naturalist Volume 18, No. 3 September 1986

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

TABLE OF CONTENTS

HABITAT SELECTION AND MOVEMENT PATTERNS IN SANDHILLS RODENTS ▪ C. A. Lemen and P. W. Freeman

THE HERPETOFAUNA OF THE WEAVER DUNES, WABASHA COUNTY, MINNESOTA ▪ P. A. Cochran

MULTIPLE EGG CLUTCH PRODUCTION IN THE GREAT PLAINS TOAD ▪ J. J. Krupa

MAMMALS OF THE KONZA PRAIRIE RESEARCH NATURAL AREA, KANSAS ▪ E. J. Finck, D. W. Kaufman, G. A. Kaufman, S. K. Gurtz, B. K. Clark, L. J. McLellan, and B. S. Clark

AQUATIC INVERTEBRATES IN LEVEL DITCHES AND ADJACENT EMERGENT …

The Probe, Issue 60 - February 1986

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
FEBRUARY, 1986
National Wool Grower’s Convention
Animal Rights
Toxic Collar
Trapping Figures
Red Fox and Ducks
Letters to Ye Ed
The Coyote
Master Trapper of the Year
What do Coyotes Eat?
Do-it-Yourself Skunk Control
Killer Beavers
Audubon Society

Characterizing Corn Hybrid Moisture Stress Sensitivity Using Canopy Temperature Measurements, B. L. Blad

School of Natural Resources: Faculty Publications

No abstract provided.

Respiratory Release Of Co2 In Alfalfa And Soybean Under Field Conditions, S. B. Verma

School of Natural Resources: Faculty Publications

No abstract provided.

Tradition, Innovation And Conflict: Perspectives On Colorado Water Law, Lawrence J. Macdonnell

Books, Reports, and Studies

This digital resource contains only an abstract, cover image and table of contents information from the published book.

Print copy of book is available in the University of Colorado’s Wise Law Library: http://128.138.161.92/record=b129217

Contents: Introduction / Lawrence J. MacDonnell -- PART ONE : THE BACKGROUND: Meeting Colorado's water requirements : an overview of the issues / David H. Getches -- The historical development of Colorado water law / Raphael J. Moses -- PART TWO : WATER RIGHTS ADJUDICATION AND ADMINISTRATION: Administering Colorado's water : a critique of the present approach / Clyde O. Martz, Bennett W. Raley -- Water administration …

An Overview Of Minnesota's Role In The Federal Nuclear Waste Disposal Process, Gregg Larson

Journal of the Minnesota Academy of Science

No abstract provided.

High-Level Radioactive Waste Disposal Siting: A Political Process, James Pehler

Journal of the Minnesota Academy of Science

No abstract provided.

The U.S. Department Of Energy's Crystalline Repository Project- A Technical Overview, Edward S. Patera

Journal of the Minnesota Academy of Science

No abstract provided.

Geological Review Of Department Of Energy Proposed Sites In Minnesota For High-Level Radioactive Waste Disposal, Brenda Lorinser

Journal of the Minnesota Academy of Science

The Department of Energy (DOE) proposed three potentially acceptable sites for high-level radioactive waste disposal in Minnesota. These sites were chosen on the basis of the nature of the exposed or near surface crystalline rock bodies they contain. However, the accuracy of the data used by the DOE in choosing these sites is variable, from excellent to poor.

Homelessness In Utah: Utah Homeless Survey: Final Report, Task Force For Appropriate Treatment Of The Homeless Mentally Ill: Salt Lake City

Elusive Documents

No abstract provided.

Emerging Forces In Western Water Law, Steven J. Shupe, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

21 p. ; 28 cm

The Future Of The National Parks: Recreating The Alliance Between Commerce And Conservation, Robin W. Winks, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

23 p. ; 28 cm