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Dual Regulation Of Silent And Productive Infection In Monocytes By Distinct Human Immunodeficiency Virus Type 1 Determinants, Howard Gendelman, Peter Westervelt, Timothy Henkel, David B. Trowbridge, Jan Orenstein, John Heuser, Lee Ratner

Nebraska Center for Virology: Faculty Publications

The regulation of human immunodeficiency virus type 1 infection and replication in primary monocytes was investigated by mutagenesis of recombinant proviral clones containing an env determinant required for the infectivity of monocytes. Virus replication was assayed by determination of reverse transcriptase activity in culture fluids and by recovery of virus from monocytes following cocultivation with uninfected peripheral blood mononuclear cells. Three virus replication phenotypes were observed in monocytes: productive infection, silent infection, and no infection. Incorporation of the monocytetropic env determinant in a full-length clone incapable of infection or replication in primary monocytes (no infection) conferred the capacity for highly …

Biological Collections At The University Of California, Davis: Scope, Status, And Needs, Scott Lyell Gardner, Lynn S. Kimsey, Marilyn S. Warburton, Patrick E. Mcguire

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The rich heritage of agricultural and biological research and teaching on the Davis campus of the University of California is reflected in its vast holdings of scientific collections of living and nonliving preserved biological materials. More recently, as the campus expanded, important collections were developed to support research and educational programs in human and veterinary medicine, anthropology, and geology. A task force reviewed the results of campus-wide surveys and its findings are reported here. Recommendations for future activities are put forth.

Cross-Transmission Studies With Eimeria Arizonensis-Like Oocysts (Apicomplexa) In New World Rodents Of The Genera Baiomys, Neotoma, Onychomys, Peromyscus, And Reithrodontomys (Muridae), Steve J. Upton, Chris T. Mcallister, Dianne B. Brillhart, Donald W. Duszynski, Constance D. Wash

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cross-transmission experiments were performed using oocysts of an Eimeria arizonensis-like coccidian from Peromyscus leucopus and Peromyscus truei, an E. arizonensis-like coccidian from Reithrodontomys fulvescens, Eimeria baiomysis and Eimeria taylori from Baiomys taylori, Eimeria albigulae from Neotoma albigula, and Eimeria onychomysis from Onychomys spp., between representatives of the above host genera. The E. arizonensis-like coccidian from R. fulvescens infected Reithrodontomys megalotis, Reithrodontomys montanus, and Peromyscus leucopus. Oocysts of E. arizonensis from P. leucopus could be transmitted to both P. leucopus and R. megalotus. Oocysts of E. baiomysis and E. taylori …

Cestode Parasites In Potamotrygon Motoro (Natterer) (Chondrichthyes: Potamotrygonidae) From Southwestern Brazil, Including Rhinebothroides Mclennanae N. Sp. (Tetraphyllidea: Phyllobothriidae), And A Revised Host-Parasite Checklist For Helminths Inhabiting Neotropical Freshwater Stingrays, Daniel R. Brooks, Jose F.R. Amato

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Specimens of five species of cestodes were collected in 6 specimens of the freshwater stingray species Potamotrygon motoro (Natterer), collected in the vicinity of Corumba, Mato Grosso do Sul, Brazil. Acanthobothrium regoi, Potamotrygonocestus orinocoensis, Rhinebothroides venezuelensis, and Rhinebothrium paratrygoni are reported from P. motoro and from southwestern Brazil for the first time. Rhinebothroides mclennanae n. sp. appears to be the sister species of Rhinebothroides glandularis, the only other member of the genus exhibiting darkly staining glandular cells lying free in the parenchyma surrounding the terminal genitalia. The new species resembles Rhinebothroides glandularis, Rhinebothroides freitasi, …

The Evolutionary Origin Of Plasmodium Falciparum, Daniel R. Brooks, Deborah A. Mclennan

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Among species of Plasmodium, P. falciparum is an enigma. It is unusually pathogenic and is not characterized by the relapsing episodes characteristic of other species. Its primary vector is a species of mosquito that is highly anthropophilic (Anopheles gambiae), and which shows evidence of rapid genetic change apparently coincident with the rise of human agriculture. Plasmodium falciparum has no alternative vertebrate reservoir hosts, and if the number of human infections drops below a threshold level, the species is unable to maintain itself. All of these observations suggested a novel hypothesis to Boyd (1949, cited in Waters et …

The Probe, Issue 121 - May 1992

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
MAY 1992
European Fur Ban: A Canadian Perspective
Calendar of Upcoming Event
s Bird Strike Committee Organized
Animal Damage Control in the News:
Animal Activists Damage Toxicology Lab at MSU
Audubon Magazine Raps ADC
Steel Coyote Traps Banned in L.A.
Phostoxin Kills Australian, Causes Hospital Evacuation
California ADC Personnel Face Furloughs
Boy Recovers from Lion Mauling
Cornell Publishes Quarterly News

Nebline, May 1992

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news

Wildlife Damage News, Volume 4, Spring 1992

Wildlife Damage News

CONTENTS:
Saving Sweet Com From Raccoons
Registration Status for Crow Repellents in NYS
Species Profile-Birds
How to Gather Tiger Manure and Why?
My Passion, Your Passion
Conibear Traps for Woodchucks
Parasite Plagues Doves Which May Kill Hawks
Recent Publications

Wpa News 36 (1992), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (May 1992), number 36

Published by the World Pheasant Association

Insect, Plant Disease, And Weed Science News, No. 92-4, April 24, 1992, Alex Martin, Lisa Brown Jasa

Insect, Plant Disease, and Weed Science News (1987-1992)

Inside

Plant Disease

Cedar-apple rust .......... 3

Tree disease guide ....... 3

Weed Science

Controlling alfalfa ....... 3

Combination herbicides..........3

New soybean herbicides ................. 4

Insect Science

Russian wheat aphid .... 5

Pest management training ...................... 5

Alfalfa weevils ............ 6

Electron Production In Proton Collisions With Atoms And Molecules: Energy Distributions, M. Eugene Rudd, Y.-K. Kim, D. H. Madison, Timothy J. Gay

Timothy J. Gay Publications

All known data on the energy distribution of secondary electrons from collisions of protons with atoms and molecules have been reviewed and differential cross sections have been collected. The two experimental methods used to obtain the data are discussed and possible sources of error pointed out. Theoretical treatments are reviewed and several methods of checking the consistency of the data are discussed. Two semiempirical models have been chosen to represent the differential cross sections, and parameters for these models are given which fit the average of the experimental data, subject to known constraints. Recommended values of differential cross sections are …

The Probe, Issue 120 - April 1992

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
APRIL 1992
Laughing Gulls-Aircraft Collisions Increasing Hazard at JFK
Calendar of Upcoming Events
Animal Damage Control in the News:
WLFA Alerts Hunters to Proposed Arizona Law
Spring Bear Hunt Phased Down in Colorado
Black Vultures a “Hot” Item in Louisiana
Fur Industry on a Comeback?
Texas State Representative Strongly Supports ADC Efforts
Critical Issues Facing the ADC Program
Jim Forbes Wins Membership Incentive Content
Maury Bedford Designs Winning Logo
Species Solidarity Urged by Reader's Digest Writer
NADCA Business Meeting Held March 4 in Newport Beach
10th Great Plains Wildlife Damage Control Workshop Available …

The Muse: Resources For Faculty And Ta Newsletters, No. 4, Spring 1992

Professional and Organizational Development Network in Higher Education: Archives

Sometimes simpler may be better: The case for the traditional one-column newsletter, by Linc. Fisch

Editors' musings: The Muse goes subscription

Filings: Muse news to use

Book review of Language on a Leash by Bruce 0. Boston

Design Review: York University's CORE illustrates an appealing blend of graphic elements

Supplement: Editor to editor, by LeAne H. Rutherford

Supplement: Instructional Development newsletter:

Springboard to the Professoriate, by Paul Treuer and LeAne Rutherford

EGALITARIAN TEACHING: Uncommon Teaching with a Common Touch, by Rick Lichty

THE SAFE CLASSROOM, by Deborah Petersen-Perlman, Ph.D., Assistant Professor, Communication

REFLECTING ON WORKSHOPS AND LIFE IN THE …

Ard News April 1992

Agricultural Research Division: News and Annual Reports

Contents:

Comments from the Dean
Great Plains Agricultural Council Meets in Lincoln
National Research Initiative Allocations to the North Central Region During FY1991
ARD Vision Statement
Grant and Contract Income Obtained by Units During the Last Three Calendar Years
Funding Sources for Agricultural Experiment Stations
Nebraska Good Seed Week
Dr. Jeff Keown Selected for Leadership Development Course
IANR Resource Allocation Philosophy
Faculty Positions
Staff Positions
Support
Proposals Submitted for Federal Grants

Water Current, Volume 24, April 1992

Water Current Newsletter

Kusler Opens, Closes Water Conference: Sets Tone for "Living with Wetland Policies, Politics'
Governor's Speech Calls for Balance for Wetlands Policy
Water Celebrated
USGS Funds Awarded
Report from the Director: Consortium Formed to Promoted Informed Decision-Making
Progress Award Goes to Nebraska Groundwater Foundation
Heimlich Presents National Economic Perspective on Wetlands
Pioneer Irrigation Award to Hastings Irrigation Pipe Company
Proceedings Available of 1990 NATO Advanced Research Workshop on Nitrate Contamination

Angular Distributions For Near-Threshold (E,2E) Processes For H, He, And Other Rare-Gas Targets, Cheng Pan, Anthony F. Starace

Anthony F. Starace Publications

Distorted-wave calculations of the triply differential cross sections for electron-impact ionization of H, He, Ne, Ar, Kr, and Xe are presented for final-state electrons sharing ≤4 eV excess energy and for the coplanar, θ₁₂=π geometry. Results for H and He targets, presented briefly elsewhere [C. Pan and A. F. Starace, Phys. Rev. Lett. 67, 185 (1991)], are analyzed in greater detail and compared with available experimental and other theoretical results. In particular, for He targets the effects of exchange and of second-order capture processes are exhibited. These are shown to be of lesser importance than other short-range effects …

Host Stadium Specificity In The Gregarine Assemblage Parasitizing Tenebrio Molitor, Richard E. Clopton, John J. Janovy Jr., Tamara J. Percival Cook

John J. Janovy, Jr. Publications

Reciprocal cross-stadia experimental infections were used to demonstrate stadium specificity within the gregarine assemblage parasitizing Tenebrio molitor, the yellow mealworm. Gregarina cuneata, Gregarina polymorpha, and Gregarina steini are characteristic parasites of larval T. molitor. Gregarina niphandrodes is a characteristic parasite of adult T. molitor. Experimental infections were produced in all homologous host-parasite combinations. No infection was produced in heterologous or cross-stadia combinations. This study introduces the concept of separate, distinct parasite niches corresponding to separate life cycle stages and established by known, predictable life cycle events within a single host species.

Review Of Phylogeny, Ecology, And Behavior By Daniel R. Brooks And Deborah A. Mclennan, University Of Chicago Press, 1991, John J. Janovy Jr.

John J. Janovy, Jr. Publications

Review of Phylogeny, Ecology, and Behavior by Daniel R. Brooks and Deborah A. McLennan, University of Chicago Press, 1991.

Survey Of Mollusks Of The Platte River: Final Report, Patricia W. Freeman, Keith Perkins

School of Natural Resources: Faculty Publications

A survey of the mollusks of the Platte River was carried out during the summers of 1990 and 1991. With the exception of the Big Bend Reach of the River in Dawson, Buffalo and Hall counties, no unionids (mussels) were found in the main channel of the river. We found 11 species of mussels along the river and 16 species of snails at 49 different sites from east to west across the state. We found the Asiatic clam, a known, non-native, pest species, for the first time in the state placing it several hundred miles west of the present eastern …

The Probe, Issue 119 - March 1992

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
MARCH 1992
The "Padded" Trap Is Not the Answer
Calendar of Upcoming Events
Animal Damage Control in the News:
Man Wins Award for Pro-Fur Letter
Starling Control Becomes a Labor Issue
Rats Invade the Pentagon
Montana Ranchers Win Support for Aerial Coyote Control Program
Mouse Creatures Havoc At Cairo Airport
New Urban Wildlife Control Association Formed
Northeast Association of Wildlife Damage Biologists Founded
In Memoriam – Joseph Albert Schmidt
Critter Control Calls for Licensing of NWCOs
"Probe" Co-editor Chides Animal Welfare Groups

Problems With Management Of A Native Predator On A Threatened Species: Raven Predation On Desert Tortoises, William I. Boarman

Vertebrate Pest Conference Proceedings: 15th (1992)

Common ravens (Corvus corax) are a major predator on the threatened desert tortoise (Gopherus [=Xerobates] agassizii). Large numbers of juvenile tortoise shells have been found beneath known raven nests and perches; many shells that show evidence consistent with raven predation have been found sporadically throughout the range of the tortoise; significant proportional decreases in juvenile size/age class distributions have been identified; and people have observed ravens killing, carrying, and consuming juveniles. In 1988 the U. S. Bureau of Land Management initiated a process to evaluate, design, and implement a program to reduce raven predation …

Review Of Research On Control Of Bird Pests In Australia, Mary Bomford

Vertebrate Pest Conference Proceedings: 15th (1992)

The most significant damage inflicted by birds in Australia is to germinating cereal and to ripening sunflower and fruit crops. The main pests are several native psittacine and corvid species, silvereyes (Zosterops lateralis) and European starlings (Sturnus vulgaris). The economic cost of damage is largely unquantified. While losses to industries as a whole are often low, losses to individual growers may be severe, and losses are distributed patchily in space and time. Shooting is the most widely practiced and most ineffective bird control technique used in Australia. Despite the high numbers of birds killed, damage persists, …

A Role For Fertility Control Wildlife Management In Australia?, Mary Bomford, Peter O'Brien

Vertebrate Pest Conference Proceedings: 15th (1992)

Increasing community awareness of the moral and animal welfare issues associated with conventional pest animal control has focused interest on non-lethal alternatives, such as fertility control. In Australia, animal welfare organizations have proposed fertility control as a solution to pest problems with feral horses and kangaroos. Wildlife damage control achieved by non-lethal, non-toxic and humane means would have wide appeal and application. Importantly, assessments of effectiveness must focus on damage control, rather than fertility control, per se. Most tests of fertility control drugs and techniques examine effects on reproduction, rather than on population dynamics. Many tests and models have not …

Rodent Control In The Conservation Of Endangered Species, A.P. Buckle, M.G.P. Fenn

Vertebrate Pest Conference Proceedings: 15th (1992)

The commensal rodent pest species have spread from their ancestral homes in Asia to inhabit many natural ecosystems worldwide. The introduction of these exotics has often had a significant effect on endemic plant and animal species but their impact has, perhaps, been most severe on off-shore and oceanic islands where nesting birds, insects, terrestrial molluscs, reptiles and amphibians are all vulnerable. Conservationists have used a variety of control approaches either to reduce or eliminate the pressure of competition and predation exerted by introduced rodents on island populations of endangered species. Successful projects have involved a sequence of carefully-planned operations. Firstly, …

Toxicity Of Compound 1080 To Magpies And The Relationship Of Dose Rates To Residues Recovered, Richard J. Burns, Guy E. Connolly

Vertebrate Pest Conference Proceedings: 15th (1992)

The acute oral LD₅₀ of Compound 1080 to magpies was estimated at 1.78 mg/kg indoors, 1.91 mg/kg outdoors in summer, and 2.30 mg/kg outdoors in winter. Postmortem 1080 residues were detected in 75 of 76 treated birds. Higher doses yielded higher 1080 residues. Within dose levels, birds surviving longer carried lower residues. In a separate test, an average residue of 0.09 ppm was found in 8 birds treated at 1.59 mg/kg and euthanized 24 h post dosing. The adjusted dietary LC₅₀ of Compound 1080 to magpies tested indoors was estimated at 16 ppm. During LC₅₀ tests, the …

Conference Participants

Vertebrate Pest Conference Proceedings: 15th (1992)

Participants came from 32 states, the District of Columbia, and from 11 other countries for a total of 327 registered attendees. The wide representation from the United States and countries throughout the world contributed to the success of the conference by providing a highly diversified group for the exchange of information on research progress, technological advances, management strategies, new products and materials, prevailing management philosophies, the protection of endangered species, and a range of other vertebrate pest topics.

Development Of Rodent Control Technology For Confined Swine Facilities, Robert M. Corrigan, Cheryl A. Towell, Ralph E. Williams

Vertebrate Pest Conference Proceedings: 15th (1992)

This paper discusses the development of site-specific baiting technology for controlling the house mouse (Mus musculus) in confined swine facilities utilizing specific rodenticide formulations, bait stations, and baiting strategies. Behavioral research was also conducted to identify primary nesting and travel activities of mice within grower-finishing units. The rodenticide bromadiolone in a block formulation was found to be effective in most baiting trials, and provided resistance to the harsh environment of the swine facility and the necessary versatility for securing baits to minimize hazards to swine. A commercially available tamper resistant bait station was found to be effective for …

Coyote Control To Protect Endangered San Joaquin Kit Foxes At The Naval Petroleum Reserves, California, Brian L. Cypher, Jerry H. Scrivner

Vertebrate Pest Conference Proceedings: 15th (1992)

We investigated the effectiveness of a coyote (Canis latrans) control program implemented to increase numbers of endangered San Joaquin kit foxes (Vulpes macrotis mutica) at the Naval Petroleum Reserves in California (NPRC). Between 1980 and 1985, the kit fox population on NPRC declined approximately 66% while coyote abundance apparently increased. Coyote predation was identified as the primary cause of mortality for kit foxes. From 1985 to 1990, the U. S. Department of Energy (DOE) sponsored a program to kill coyotes with the objective being to reduce predation on kit foxes and increase fox numbers. Control methods …

Sterilants For Managing The Populations Of Red-Winged Blackbirds (Agelaius Phoeniceus), Andrew Cyr, Diane Lacombe

Vertebrate Pest Conference Proceedings: 15th (1992)

Male Red-winged blackbirds (Agelaius phoeniceus) being gregarious, and causing heavy damage to corn crops in the northeast, including southern Québec and Ontario, sterilization has been studied as a mean's to manage their populations. With chemosterilants (thiotepa and Omitrol®) tested, year to year variations in reproductive success occurs. The spermatogenesis is disrupted, but the overall effect is not specific. Biosterilisation with 10.0 μg doses of GnRH-analogue hormones is more specific, and the spermatogenesis is disrupted for at least a month, but several spaced injections were required. No field trials have been done yet.

High Frequency Sound Devices Lack Efficacy In Repelling Birds, William A. Erickson, Rex E. Marsh, Terrell P. Salmon

Vertebrate Pest Conference Proceedings: 15th (1992)

Ultrasonic or high-frequency sound-producing devices are marketed as a scaring or frightening method for bird control. Although inaudible to humans, most birds also do not hear in the ultrasonic frequency ranges of above 20,000 Hz, thus the credibility of advertised claims raises questions. A review of efficacy studies conducted and published by a number of researchers fails to demonstrate the usefulness of such bird control devices.