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Efficacy Of Predator Damage Control Programs, Roger D. Nass

Vertebrate Pest Conference Proceedings: 9th (1980)

Data about the efficacy of predator damage reduction programs are shown for predation loss studies with control, loss studies without control, complaint resolution or success rates, and predation-predatorcapture sequences. This combined evidence indicates that animal damage control programs are reducing predation on livestock.

Plague Studies In California — The Roles Of Various Species Of Sylvatic Rodents In Plague Ecology In California, Bernard C. Nelson

Vertebrate Pest Conference Proceedings: 9th (1980)

The status of our knowledge of the roles of various sylvatic rodents in plague ecology in California is reviewed. Two theories, Pavlovsky's doctrine of focality of zoonotic diseases and Baltazard's proposal that plague is maintained in nature in resistant rodent species, form the framework for our understanding of the occurrence and persistence of plague. The concepts of resistance, reservoir species, susceptibility, and recipient species are defined and discussed. The ecological attributes that appear to enhance the role of certain rodent species as reservoirs are proposed, and the ecological features that appear to produce epizootics are briefly outlined. Based on current …

The Need For Good Public Relations And Staff Training In The Use Of Toxins In Pest Destruction, Peter C. Nelson

Vertebrate Pest Conference Proceedings: 9th (1980)

With ever-increasing environmental pressures being placed on all animal control agencies worldwide, particularly those utilizing toxins as control weapons, the time has arisen where those agencies must attempt to anticipate these pressures which are likely to become more vocal and counter them wherever possible before they happen. It is an accepted fact that the world as a whole has become extremely environmental conscious in all fields, not just pest control. This can be seen or heard most days of the week in newspapers, on television or radio. The reasons for this awareness of the environmental problem are wide and diverse …

Factors Responsible For The Successful Establishment Of Exotic Avian Species In Southeastern Florida, Alison C. Rand

Vertebrate Pest Conference Proceedings: 9th (1980)

Presently southeastern Florida has at least 24 established exotic avian species from both New and Old World families. This much man-modified region of Florida is characterized by the Atlantic Coastal Ridge in Palm Beach, Broward and Dade Counties and the Florida Keys of Monroe County. Because of the draining of the Everglades to the west, the filling of the mangroves on the seaward side, and the accompanying urban-suburban sprawl, many exotic plant species have invaded the Ridge thus preparing the environment for introduced birds. The Red-whiskered Bulbul, Pycnonotus jocosus, illustrates this point. Most exotic avian species have appeared and colonized …

Predator Damage Control, 1980: Recent History And Current Status, Dale A. Wade

Vertebrate Pest Conference Proceedings: 9th (1980)

This review summarizes executive and other actions relating to cancellation of the predacides in 1972 and related events. A chronology of these actions and events is appended (Appendix A). Predator damage control operations, and research findings over the past decade, are briefly reviewed and related political decisions are discussed.

Water Current, Volume 12, No. 2, March/April 1980

Water Current Newsletter

Nebraska's Water: Twenty-Five Years of Change
Research Overview
Proposals Submitted to OWRT
Water Center's Five-Year Research Planning Program
New Staff Members
Recent Staff Activities
208 Program Shifted to DEC
Geothermal Research
Support for Water Research
Animal Escape Ramps for Concrete-Lined Canals
Domenici/Moynihan Compromise Introduced
EPA Groundwater Study
WRC Budget Cuts
US Water Scientist Takes UNESCO Post
Research Review: Suitability of Region-Wide Irrigation Scheduling by Local Evapotranspiration Measurement

The Prairie Naturalist Volume 12, Number 1. March, 1980

The Prairie Naturalist

RESIDUAL SEEDS AS POTENTIAL SPRING WATERFOWL FOODS IN SMALL, MAN-MADE IMPOUNDMENTS ▪ G. A. Baldassarre

NOTES ON THE NATURAL HISTORY OF BATS FROM BADLANDS NATIONAL MONUMENT, SOUTH DAKOTA ▪ J. P. Farney and J. K. Jones, Jr.

PRAIRIE CHICKEN DOMINATED SHARP-TAILED GROUSE INTERACTION ▪ R. A. Schmidt

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA— 1979 ▪ R. N. Randall

THIRD NESTING OF CATTLE EGRET IN NORTH DAKOTA ▪ R. A. Schmidt

FIRST BREEDING RECORDS OF THE WHITE-FACED IBIS IN NORTH DAKOTA ▪ R. A. Schmidt

NOTES

Pinon Jay in North Dakota ▪ R. N Randall, J. Swanick and O. Swanick

Gray-crowned …

The Probe, Issue 5 - March 1980

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE National Animal Damage Control Association March, 1980
Our first NADCA conference meet scheduled for Flagstaff, AZ has to be cancelled.
As of this issue we hope to go on a regular bimonthly issue basis (March, May, July, etc.) finances permitting.
CALIFORNIA VERTEBRATE PEST CONFERENCE
WONDER CHEMICALS The only wonder is that EPA still permits us to use any chemicals for controlling vertebrate animal damage.
Anderson called Secretary Andrus a "cuttlefish" as the latter is as adept at squirting ink to hide his operations as is the marine squid. Anderson has documented some very questionable, Mafia-linked practices by Andrus …

Stretching The Mouse Control Dollar, John E. Crumpacker

Eastern Pine and Meadow Vole Symposia

One of the biggest problems In our mouse control program at H. F. and T. B. Byrd, Inc. in Timberville, Virginia Is keeping a palatable bait before the voles until the bait can be accepted. For years we used labor needed for pruning to place an expensive bait only to be impeded by wet weather that molded the bait.

This year an effort is being made to keep the bait in good condition and before the target animal for a longer time. We cut old car tires (not steel belted) given to us by a local distributor and rented his …

Evaluation Of Impacts Associated With Reregulation Of Water Levels In Lake Mohave, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service

Publications (WR)

The U.S. Water and Power Resources Service is considering reregulating Lake Mohave water levels to increase the net power benefit from Hoover Dam. Reregulation will not increase the generation capacity of the Hoover powerplant but it will enable the plant operation to be increased when the energy has greater monetary value. Energy generated at different times of the year has different market value, the highest being in January-March and July- September. By generating more power during these periods more net monetary benefit can be derived from Hoover Dam. The total volume of water released from Hoover Dam over an annual …

Blackbirds And Corn In Ohio, Richard A. Dolbeer

United States Department of Agriculture Wildlife Services: Staff Publications

Damage to corn by blackbirds (Icteridae) has been an economic problem throughout historical times in North America. Ohio, with the highest nesting season population density of red-winged blackbirds (Agelaius phoeniceus) in North America and large acreages of corn, has been a key state in this conflict. Survey of damage from 1968 to 1979 revealed that blackbirds annually destroyed less than 1% of the corn crops in Ohio, a 4- to 6-million dollar loss at 1979 prices. This total dollar loss is somewhat misleading because of the uneven distribution of damage among fields. Over 97% of the cornfields in …

Access Of Compounds To The Vomeronasal Organ In Pine And Meadow Voles, Charles J. Wysocki, Gary K. Beauchamp, Susan Erisman

Eastern Pine and Meadow Vole Symposia

Neuroendocrine responses play a critical role in reproduction in every mammalian species, including voles (Richmond S. Stehn, 1976). Disruption of these normal responses can result in: (1) abnormal sexual maturation; (2) abnormal or absent female cycles; (3) pseudopregnancy; (4) blocked pregnancies; or (5) the total absence of courtship and mating. Each of these factors in turn plays a considerable role in population dynamics, especially population density. Therefore, mechanisms which disrupt normal neuroendocrine function could affect population dynamics and reduce population density by affecting changes in one or many of these reproductive processes.

Initial Results Of Chemical Inhibitors And Photoperiodic Influences On Growth And Reproduction In Microtus Pennsylvanicus, Jack A. Cranford, David H. Pistole, Terry L. Derting

Eastern Pine and Meadow Vole Symposia

Recently Berger et al. (1977) have demonstrated reproductive in¬hibition in Microtus montanus as a result of specific plant compounds in natural vegetation. Naturally occurring cinnamic acids and their related vinyl phenols have been demonstrated to have marked effects on uterine weight, inhibition of follicular development and cessation of breeding activity. Compounds having antigonadotrophic and antithryo-tropic activities have been identified in a wide variety of plants (Chury 1967). Bickoff et al. (1959) report that alfalfa contained a non-estrogenic compound which would over ride the estrogenic effect of the plant estrogen coumestrol. Adler (1962) demonstrated that a non-estrogenic compound in alfalfa could …

Induction Of Abortion By Strange Males In Pine Vole Females That Are: 1) Ten Days Pregnant Or 2) Pregnant And Lactating, Margaret H. Schadler, Barbara J. Gauger

Eastern Pine and Meadow Vole Symposia

Pregnant voles react to the presence of unfamiliar males by aborting the offspring they are carrying, entering estrus and mating with these new males. This phenomenon was first described in pine voles by Marks and Schadler (1979). At that time we reported that 84% of females that were four days along in their first pregnancy were induced by strange males to reject their embryos. These findings encouraged us to continue our investigations and this paper reports results on the abortion response caused by strange males in females ten days along in their first pregnancy (Experiment I) and on experienced pine …

Results Of A Bioassay Technique For Ground-Sprayed Rodenticides, David H. Davis, William T. Sullivan Jr., Don H. Hayne

Eastern Pine and Meadow Vole Symposia

A laboratory test of toxicity to voles of toxicants sprayed. on a soil substrate was used. to test brodifacoum, chlorqphacinone and. endrin against pine voles. By this test, endrin was not as effective against meadow voles as against pine voles.

Current Research Related To Pine And Meadow Vole Damage Control, Mark H. Merson, Ross E. Byers

Eastern Pine and Meadow Vole Symposia

This paper will outline some of the research related to pine and meadow vole damage control which is currently underway at the Winchester Fruit Research Laboratory and outline some of the areas which we will be pursuing in the future. One question which must be answered whenever a chemical is used to control a pest organism is how that chemical is impacting non-target organisms. A study was initiated in the fall of 1979, with the objective of determining by use of radiotelemetry the fates of birds of prey in the vicinity of orchards treated with Brodifacoum, an anticoagulant rodenticide. A …

Field Evaluation Of Candidate Rodenticide, Milo E. Richmond, Pamela N. Miller

Eastern Pine and Meadow Vole Symposia

During autumn of 1978 and 1979 the New York Cooperative Wildlife Research Unit continued its program of research and management aimed at the pine vole (Pitymys pinetorum) and meadow vole (Microtus pennsylvanicus). Two herbicides, Ammate-X (E.I. Dupont de Nemours) and Kerb (Rhom S Haas Corp.) along with 4 candidate rodenticides, Bromadiolone and Chlorophacinone (Chempar Inc.), Volak (I.C.I. Chemicals Inc.) and zinc phosphide (Bell Laboratories Inc.) were tested in both orchard and laboratory situations. This work is being conducted in conjunction with a separate research unit project aimed at evaluating the potential of using populations of the …

Disposition Of The Endrin Rpar, Lawrence S. Ebner, Harvey S. Gold

Eastern Pine and Meadow Vole Symposia

Following a comprehensive three-year Rebuttable Presumption Against Registration ("RPAR") review of endrin, on July 25, 1979 the U.S. Environmental Protection Agency announced its decision to continue federal approval of endrin for control of pine voles in the East and meadow voles in the West among other uses. See 44 Fed. Reg. 43,637-8. The Agency concluded that with additional safety precautions and procedures, endrin can be applied safely and effectively, and that the benefits of usage outweigh any risks. The stringent new safe¬guards being required by EPA, including new usage restrictions and directions, equipment specifications, and warnings to female applicators, are …

Movement Types And Weather Correlates In Free-Ranging Meadow Voles, Dale M. Madison

Eastern Pine and Meadow Vole Symposia

Meadow voles (Microtus pennsylvanicus) were radiotracked in their natural environment from June through August 1974, 1975 and 1978. Four different types of movement were observed: residency, shifting, wandering and dispersal. Next to the residency pattern, wandering was the most common form of movement and probably was important during breeding activities. Dispersal was a rare event and is probably confused with wandering in the existing literature.

A total of 17 weather variables were analyzed for correlations with vole movement. Male voles showed a distinct tendency to move more widely during periods of dry weather. The latter was attributed to …

Pine Vole Control In 1979 Field Plots, Ross E. Byers

Eastern Pine and Meadow Vole Symposia

Broadcast treatments of Volak (Brodifacoum) applied at rates of approx. 20 lbs/acre gave 98% control of voles when active ingredient levels were from 0.005% to 0.0005% in the bait. Of the two Rozol (Chlorophacinone)formulations tested, the French (Lipha) pelleted formulation appeared to be slightly better than what is currently being marketed in the USA. The Maki (Bromodialone) bait formulated in the same wax bait carrier as the Rozol-USA gave no better control than Rozol. Ramik-Brown (Diphacinone) did not appear to be as good as the other anticoagulants tested when applied either as a broad¬cast or as a hand placed bait. …

Effective Vole Control With Zp Rodent Bait Ag, Edward F. Marshall

Eastern Pine and Meadow Vole Symposia

Since the loss of DDT, Vacor (DPL 787) and other acute rodenticides and the serious use restrictions placed upon strychnine and 1080 for field use, it has become quite apparent that control of field rodents, more particular pine and meadow voles, with standard anticoagulants has become a difficult task, and in some instances impossible.

Bell Laboratories, Inc. has chosen to take a very serious look at many of the older compounds and rework and reformulate these compounds into palatable and efficacious finished baits. After 5 years of research and development. Bell Laboratories, Inc. has recently registered, with the Environmental Protection …

Proceedings Of The Fourth Eastern Pine And Meadow Vole Symposium, February 21-22, 1980

Eastern Pine and Meadow Vole Symposia

Entire Symposium

HIGHLIGHTS OF THE FOURTH EASTERN PINE AND MEADOW VOLE SYMPOSIUM
The Fourth Eastern Pine and Meadow Vole Symposium was held in Hendersonvi1le, North Carolina February 21 and 22, 1980 for the primary purpose of assessing the current status of research and extension pro¬grams relating to the problem of vole damage to fruit trees. The meeting was designed to be informative and to create an atmosphere whereby growers and various agencies such as EPA, USDA, USDI, the chemical industry and university personnel could observe the current thrust of vole research programs and their potential impact on future control methods. …

Management Model For Pine Voles: Preliminary Report, John F. Coyle, Alan R. Tipton

Eastern Pine and Meadow Vole Symposia

The use of computer models in scientific research has grown by leaps and bounds in the past decade. One of the primary reasons for this growth is the increased realization that computers and more specifically computer models, can be useful tools in synthe¬sizing large amounts of information and providing insight into problem areas of research and management.

Numerous books and papers have been written on the justification for modeling, the philosophy of modeling, and model development and utilization. Recent reviews of small mammal population models are given by Conley and Nichols (1978) and Stenseth (1977). This paper will not address …

The Probe, Issue 4 - February 1980

The Probe: Newsletter of the National Animal Damage Control Association

Contents:
THE SECRETARY'S DECISION
Interior Goal No. 1
CEQ Recommendation
NADCA Response
Interior Goal No. 2
Interior Goal No. 3
Interior Goal No. 4
Interior Goal No. 5
Interior Goal Mo. 6
Interior Restriction No. 1
Interior Restriction No. 3
Interior Restriction Mo, 2
Interior Restriction No. 4
Interior Research Directives No. 1
Interior Research Directive No. 2
Interior Research Directive No. 3
Interior Research Directive No. 4
Interior Proposed Budget
NADCA Animal Damage Control Program Recommendations
SEE WHAT THE PUBLIC THINKS OF ADC?

Compensatory Response Of Maturing Corn Kernels Following Simulated Damage By Birds, Paul P. Woronecki, Robert A. Stehn, Richard A. Dolbeer

United States Department of Agriculture Wildlife Services: Staff Publications

(1) A study was made to measure compensatory growth responses and to estimate losses associated with bird damage to maturing corn.
(2) Corn kernels contain 20-40% of their final biomass at the time they are usually consumed by blackbirds.
(3) Very slight compensation of kernel weight occurred following simulated bird damage to tip kernels.
(4) Heavy bird damage, early in kernel development, increased fungal, sprouting, and insect damage before harvest.
(5) Estimates of bird damage, subsequent secondary damage, and compensation were affected by the amount of damage, maturity of the kernels at the time of damage, and environmental factors before, …

Volume 4, Number 1 (January 1980), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

Land-Cover Changes In A River Valley In Blue Earth County, Minnesota, 1938-1974, Corrie Schaffer Cowley

Journal of the Minnesota Academy of Science

The boundary of the Blue Earth River Valley was determined by stereoscopic viewing of 1938-39 aerial photographs. The same boundary was then drawn on corresponding 1974 photographs. All area within the river valley was assigned to one of four land-cover. Comparison of 1938-39 to 1974 shows a decrease of 19 percent in river area, an increase of one percent in row crop area, an increase of 52 percent in tree area, and a decrease of 45 percent in scrub area.

Oil And Gas Development On Georges Bank: The Responsibility Of Federal Agencies For Assessment And Mitigation Of Potential Impacts On The Ecosystem, Carolyn A. Griswold

Marine Affairs Theses and Major Papers

Is it possible to provide adequate protection for the Georges Bank ecosystem as oil and gas exploration begins? The fishing industry and environmentalists say "no," but it is the resource managers who are faced with the task of predicting, assessing and mitigating impacts of development while at the same time managing resources and protecting fishery habitats. Much of this responsibility falls within NOAA; however, legislative mandates and agency responsibilities and goals mean that several other federal agencies are involved as well. This paper is an attempt to describe the potential impacts of oil and gas exploration on the Georges Bank …

The Probe, Issue 3 - January 1980

The Probe: Newsletter of the National Animal Damage Control Association

Contents:

GROWING PAINS
MORE WAYS TO SKIN A CAT
One of the five pieces of anti-trap legislation pending in the 96th Congress
really tight trap cover where you can't return to check a trap in time to conform with regulations
LIST OF HONORABLE HEROES
NADCA CHARTER MEMBERSHIP LIST

Fisheries Report No 39 - The Wildlife Of The Proposed Toolonga Nature Reserve, Shark Bay Shire, Western Australia, A. A. Burbidge, P. J. Fuller, K. Cashin

Fisheries Research Reports

Following a Cabinet endorsed recommendation by the Environmental Protection Authority in 1975, an area of vacant Crown Zand (the Toolonga Area) was examined during April and September, 1978.

The geology, soils and vegetation of the area are described and annotated lists of mammals, birds, amphibians and reptiles are presented. A small part of the area lies in the South West Botanical Province (Irwin District) but most is in the Eremaean Botanical Province (Carnarvon District). The vertebrate fauna is a mixture of south-western, Shark Bay and arid zone species, but the last predominate.

The Toolonga Area provides an opportunity to protect …