Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (8179)
- University of Kentucky (5110)
- Utah State University (1544)
- Department of Primary Industries and Regional Development, Western Australia (1169)
- Old Dominion University (935)
-
- University of South Florida (841)
- University of Arkansas, Fayetteville (671)
- Nova Southeastern University (633)
- Portland State University (606)
- Louisiana State University (593)
- University of Nevada, Las Vegas (583)
- Singapore Management University (566)
- University of Colorado Law School (525)
- University of Northern Iowa (500)
- Western Kentucky University (445)
- TÜBİTAK (441)
- SIT Graduate Institute/SIT Study Abroad (424)
- University of Texas Rio Grande Valley (406)
- South Dakota State University (402)
- Missouri University of Science and Technology (378)
- Claremont Colleges (355)
- City University of New York (CUNY) (349)
- Brigham Young University (342)
- California Polytechnic State University, San Luis Obispo (326)
- Clemson University (312)
- Chulalongkorn University (301)
- Technological University Dublin (301)
- Wright State University (301)
- University of Texas at El Paso (282)
- Edith Cowan University (280)
- Keyword
-
- Western Australia (722)
- Climate change (522)
- Sustainability (384)
- Conservation (356)
- Grazing (334)
-
- Water quality (326)
- United States (268)
- Machine learning (260)
- Biodiversity (242)
- Management (237)
- Ecology (232)
- Invasive species (231)
- Agriculture (228)
- Environment (227)
- California (204)
- Sheep (189)
- Chemistry (185)
- Education (179)
- Natural resources (179)
- Animals (176)
- Water (176)
- Cattle (175)
- Artificial intelligence (174)
- Nitrogen (172)
- Fisheries (165)
- Soil (161)
- Drought (160)
- Utah (159)
- Livestock (158)
- Nebraska (156)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (4103)
- United States Department of Agriculture Wildlife Services: Staff Publications (1474)
- Theses and Dissertations (1135)
- Electronic Theses and Dissertations (782)
- School of Natural Resources: Faculty Publications (607)
-
- Research Collection School Of Computing and Information Systems (501)
- USF Tampa Graduate Theses and Dissertations (434)
- Independent Study Project (ISP) Collection (403)
- Great Plains Wildlife Damage Control Workshop Proceedings (365)
- United States Geological Survey: Staff Publications (355)
- Faculty Publications (339)
- Theses (337)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (306)
- Graduate Theses and Dissertations (296)
- Masters Theses (295)
- LSU Master's Theses (283)
- Dissertations (260)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (259)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (258)
- United States Department of Commerce: Staff Publications (254)
- The Prairie Naturalist (253)
- The Probe: Newsletter of the National Animal Damage Control Association (242)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (238)
- Journal of the Iowa Academy of Science: JIAS (238)
- International Journal of Speleology (235)
- Honors Theses (234)
- LSU Doctoral Dissertations (234)
- Turkish Journal of Chemistry (228)
- Open Access Theses & Dissertations (227)
- Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications (224)
- Publication Type
- File Type
Articles 39511 - 39540 of 42659
Full-Text Articles in Entire DC Network
Analysis Of Arkansas Fur Harvest Records - 1942-1984: I. State And Regional Accounts, Gary A. Heidt, James H. Peck, Tiny Sheldon, Joseph D. Clark
Analysis Of Arkansas Fur Harvest Records - 1942-1984: I. State And Regional Accounts, Gary A. Heidt, James H. Peck, Tiny Sheldon, Joseph D. Clark
Journal of the Arkansas Academy of Science
Fur harvest records maintained by the Arkansas Game and Fish Commission from 1942-1984 summarized the number of pelts sold by region (Ozark Mountains, Ouachita Mountains, Gulf Coastal Plain, and Mississippi Delta) and the average price per pelt for 16 furbearers. Analysis of these records showed that in the 1979-80 trapping season (the record year for both harvest and value both in Arkansas and the nation), the value of the Arkansas fur harvest ranked 14th nationally (2.12% of total national value). Fur harvests in Arkansas were high in the 1940's, declined in the 1950's and 1960's and then experienced a rapid …
Industrial Simulation With Animation, Edward T. Hammerand
Industrial Simulation With Animation, Edward T. Hammerand
Masters Theses
"This thesis examines and evaluates the new simulation language PCModel. Prior to the arrival of PCModel, simulation via computer typically resulted in pages of statistics compiled over the duration of the simulation. PCModel's approach is to simulate the model on the display before the user in real time. Additionally, user interaction is supported to allow changes to be made throughout the simulation run.
The evaluation of PCModel is accomplished through inspection of a pair of examples already simulated in a conventional simulation language. The examples show the relative strong and weak points of the language, as well as demonstrating how …
Shire Of Rockingham : A Study Of Land Resources And Planning Considerations, Veronica P M Oma, N L B Richards, M R. Wells
Shire Of Rockingham : A Study Of Land Resources And Planning Considerations, Veronica P M Oma, N L B Richards, M R. Wells
Resource management technical reports
No abstract provided.
Glacial Deposits, Vol. 13, 1984-1985, Department Of Geography-Geology
Glacial Deposits, Vol. 13, 1984-1985, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
A Pleistocene Jaguar From North-Central Nebraska, C. B. Schultz, Larry D. Martin, M. R. Schultz
A Pleistocene Jaguar From North-Central Nebraska, C. B. Schultz, Larry D. Martin, M. R. Schultz
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
A nearly complete skull of an extinct jaguar, Panthera onca augusta from the Mullen Assemblage in Cherry County, Nebraska, provides new information concerning North American jaguars. The presence of Cervalces, Symbos, Tapirus, and Panthera onca in the Mullen Assemblage seems to indicate an extension of the Pleistocene spruce taiga into north-central Nebraska in the Early to Middle Illinoian.
Biological Effects Of Dredging In An Offshore Borrow Area, Robert O. Johnson, Walter G. Nelson
Biological Effects Of Dredging In An Offshore Borrow Area, Robert O. Johnson, Walter G. Nelson
Ocean Engineering and Marine Sciences Faculty Publications
Changes in benthic fauna were monitored following excavation of an offshore borrow area in the vicinity of Fort Pierce Inlet, Florida. Sampling stations were established along 2 transects located in the borrow area, 1 control transect north of the borrow area, and 1 control transect south of the borrow area. Results suggest that relatively larger reductions in abundance, but not number of species, of the benthic fauna occurred in the borrow area following dredging as compared with the controls. Therefore the decrease observed appears greater than can be accounted for on the basis of seasonal changes alone. Both parameters returned …
Sex-Specific Feeding Habits Of Brown-Headed Cowbirds In Northern Ohio In January, Richard A. Dolbeer, Cynthia R. Smith
Sex-Specific Feeding Habits Of Brown-Headed Cowbirds In Northern Ohio In January, Richard A. Dolbeer, Cynthia R. Smith
United States Department of Agriculture Wildlife Services: Staff Publications
We examined the stomach contents of 57 brown-headed cowbirds (Molothrus ater) collected from a roost in Erie Co., Ohio, on 12 January 1983. Corn was by far the predominant food, averaging 66% of the stomach contents by weight. Seeds from at least five grasses, but primarily Setaria spp., were the second most abundant food category, averaging 21% of the stomach contents. Ragweed {Ambrosia artemisiifolia) seeds (2.6%) were third. Male cowbirds consumed more corn than did the smaller females, whereas females consumed more of the smaller grass seeds. The abundance of corn in harvested fields and feedlots, combined with mild winter …
A Frotarsius Chatrathi, First Tarsiiform Primate (? Tarsiidae) From Africa, Elwyn L. Simons, Thomas M. Bown
A Frotarsius Chatrathi, First Tarsiiform Primate (? Tarsiidae) From Africa, Elwyn L. Simons, Thomas M. Bown
United States Geological Survey: Staff Publications
Tarsiiform primates have long been regarded as a Laurasian group, with an extensive fossil record in the Eocene of North America and EuropeI and two important but less well-known records from Asia.
Fisheries Report No 71 - An Investigation Of The Mortality Of The Pearl Oyster, Pinctada Maxima, In Western Australia, Rand Dybdahl, David A. Pass
Fisheries Report No 71 - An Investigation Of The Mortality Of The Pearl Oyster, Pinctada Maxima, In Western Australia, Rand Dybdahl, David A. Pass
Fisheries Research Reports
A three year investigation into the cause of abnormally high mortality rates of the pearl oyster, Pinctada maxima, on the cultured pearl industry's lease sites in the North West of Western Australia was completed on 30 June 71983. The objective of this study was to determine environmental, physiological and pathological factors predisposing farm oysters to excessive Levels of mortality and, if possible, make recommendations to alleviate this problem.
As mass mortalities may have complex causes, complementary field and laboratory studies were instigated. The culture industry's method of collection, transportation and farm husbandry were examined. Environmental parameters were monitored. Various empirical …
A Study Of Trihalomethane Precursors In Deer Creek Reservoir, Megan J. White, V. Dean Adams
A Study Of Trihalomethane Precursors In Deer Creek Reservoir, Megan J. White, V. Dean Adams
Reports
Deer Creek Reservoir and tributaries were monitored from May to December 1983 in a study of the occurrence of trihalomethane (THM) precursors in the reservoir and nutrient dynamics of the reservoir system. Microcosms were used to study the effect of the following parameters on THM precursor production in the reservoir system: phosphorus loading, sediment, algal growth, and application of algicide. Additionally, THM precursor concentrations of interstitial water were analyzed in reservoir and microcosm sediment samples. Microcosms treated with ahigh phosphorus loading (70 ug/1) had THM precursor concentrations significantly higher than those measured in microcosms treated with a low phosphorus loading …
Preliminary Identification, Analysis, And Classification Of Odor-Causing Mechanisms Influenced By Decreasing Salinity Of The Great Salt Lake, C. Earl Israelsen, Darwin L. Sorensen, Alberta J. Seierstad, Charlotte Brennard
Preliminary Identification, Analysis, And Classification Of Odor-Causing Mechanisms Influenced By Decreasing Salinity Of The Great Salt Lake, C. Earl Israelsen, Darwin L. Sorensen, Alberta J. Seierstad, Charlotte Brennard
Reports
Introduction: The rising level of the Great Salt Lake has received a great deal of attention because of the resulting physical damage to adjoining properties, threatened distruption of major transportation facilities, and environmental damage to feeding and resting areas for migratory waterfowl. Another problem of growing concern is that some zones of the lake are producing odors that are objectionable to nearby populated areas. These odors are most offensive during the warm summer months and appear to be increasing with the rising levels and decreasing salinity of the lake water. This report presents the approach taken and the findings of …
Water Education ... With Emphasis On Deer Creek Reservoir - Provo River Drainage Area (Grades 5-8), Donald R. Daugs, C. Earl Israelsen, Mardell C. Parrish
Water Education ... With Emphasis On Deer Creek Reservoir - Provo River Drainage Area (Grades 5-8), Donald R. Daugs, C. Earl Israelsen, Mardell C. Parrish
Reports
Introduction: The major goals of this publication are to: * promote an awareness of the importance of water resources associated with the target watershed; * provide teachers with learning resources which are easily used in the classroom or in the field; and * provide teachers with teaching materials which help satisfy State Core Standards.
Water Education Grades K-6, Donald R. Daugs, C. Earl Israelsen
Water Education Grades K-6, Donald R. Daugs, C. Earl Israelsen
Reports
Preface: Water Activites for Elementary Children is based upon the assumption that children learn best by doing. In education, and especilly in science, talking is not necessarily teaching. The most desireable types of learning involve direct, first hand experience, not just a teacher's interpretation of these experiences. This set of learning experiences has been designed for teachers, teachers-in-training, and children, Each concept includes background information for the teacher and learning activities for the children. Lessons are designed so taht a teacher can successfully teach a unit or lession with a minimum of knowledge, preparation, and equipmnet. Most of the suggested …
Computer Aided Simulation Of A Heating, Ventilating, And Air Conditioning System In A Building, Sunil Shrikrishna Kulkarni
Computer Aided Simulation Of A Heating, Ventilating, And Air Conditioning System In A Building, Sunil Shrikrishna Kulkarni
Mechanical & Aerospace Engineering Theses & Dissertations
The Godwin Life Science Building on the Old Dominion University campus presents an interesting problem in terms of energy conservation. The building is the maximum energy resource consumer on the campus, having a criterion value of 234 KBtu/sq.ft-year (2657 MJoules/sq. rneter-year). A Simplified Energy Analysis Method (ASEAM) loads and systems computer program was used to simulate the building and its heating, ventilating, and air conditioning (HVAC) plant in order to understand the building's high annual energy resource consumption rate, and to devise ways to overcome it. The main goal was to assess and propose energy conservation improvements to the existing …
A Study Of Controlling Variables Using A Microcomputer Program Compared To The Piagetian Bending Rods Task, Rita Arlene Hrecz
A Study Of Controlling Variables Using A Microcomputer Program Compared To The Piagetian Bending Rods Task, Rita Arlene Hrecz
Dissertations and Theses @ UNI
This study compared two formats of controlling variables. Subjects' performance of controlling variables in the Piagetian Bending Rods Task was compared to their performance of controlling variables in the microcomputer interactive program called Measuring Gravitational Forces. The correlation result (0.78 on the Spearman rho and the Pearson Product Moment correlations) and results of the nonparametric Wilcoxon t test and the parametric correlated t indicated no statistically significant difference of subjects' performance of controlling variables in either task. No statistically significant gender difference of subjects' performance of either the Bending Rods Task or the Measuring Gravitational Forces computer program was found. …
Two New Genera Of Cave-Dwelling Millipedes (Diplopoda), With Remarks On The Millipede Fauna Of West Caucasian Caves, Sergei I. Golovatch
Two New Genera Of Cave-Dwelling Millipedes (Diplopoda), With Remarks On The Millipede Fauna Of West Caucasian Caves, Sergei I. Golovatch
International Journal of Speleology
Two new genera and species of the Diplopoda from Caucasian caves are described: troglobitic Caucasodesmus inexpectatus n.g., n.sp. (family Macrosternodesmidae) from a cave in North Osetia, North Caucasus, and troglophilic Ratcheuma excorne n.g., n.sp. (family Antroleucosomatidae) from a cave in Racha, Georgia, Transcaucasia. Millipedes of the western Caucasian cavernicolous fauna are reviewed as regards their distribution, relationship with caves and zoogeographical connections.
The Anatomy And Histology Of The Alimentary Tract Of The Blind Catfish Horaglanis Krishnai Menon, T. V. Anna Mercy, N. Krishna Pillai
The Anatomy And Histology Of The Alimentary Tract Of The Blind Catfish Horaglanis Krishnai Menon, T. V. Anna Mercy, N. Krishna Pillai
International Journal of Speleology
H. krishnai is a blind catfish inhabiting the dug-out wells at Kottavam Kerala, South India. Studies on the alimentary tract of the fish show that, the alimentary tract, though typically teleostean, shows several adaptive modifications. The bulbous stomach helps in storing food which is helpful in an environment chronically deficient in food. The ileo-rectal sphincter helps in retaining the digested food in the intestine for a long duration to facilitate maximum absorption. This is very helpful as the intestine is short. The liver is well developed.
The Prairie Naturalist Volume 16, No. 4. December 1984
The Prairie Naturalist Volume 16, No. 4. December 1984
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
VEGETATION PATTERNS IN RELATION TO TOPOGRAPHY AND EDAPHIC VARIATIONS IN NEBRASKA SAND HILLS PRAIRIE ▪ P. W. Barnes, A. T. Harrison and S. P. Heinisch
GREAT BLUE HERON NESTING BIOLOGY ON THE JAMES RIVER IN SOUTH DAKOTA ▪ E. M. Dowd and L. D. Flake
OVENBIRDS AT THE PERIPHERY OF THEIR RANGE IN WESTERN NORTH DAKOTA ▪ R. B. Hopkins
BREEDING BIRD COMMUNITY COLONIZATION OF SOWN STANDS OF NATIVE GRASSES IN NORTH DAKOTA ▪ K. F. Higgins, T. W. Arnold and R. …
The Probe, Issue 48 - December 1984
The Probe, Issue 48 - December 1984
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association No. 48 December, 1984
Why do We have Laws Requiring the Preservation of Species?
Animal Rightists
Tennessee Coyotes
Letters to Ye Ed
Northwest Section WIldlife Meeting 1984
Live Trap
Psycho Coyote
Mobilization of Animals
National Park Systems do Differ
Blackfooted Ferrets
Animal Liberation
Raccoon Problems
Animal Protection Institute
Artificial Intelligence: Myths And Realities, Hugo D'Alarcao
Artificial Intelligence: Myths And Realities, Hugo D'Alarcao
Bridgewater Review
Artificial intelligence the name conjures images of mechanical monsters, the Golem, Dr. Frankenstein’s creation and the rebellious computer Hal. We have always been fascinated by the possibility of creating a machine in our image, but this fascination is often accompanied by apprehension. We fear losing control of our creation and suspect that it might turn against us. It is this duality, this conflict between the desire to create and the fear of the consequences of the creation that has been so successfully exploited by writers. It is also, in part, this fascination that has recently brought the field of Artificial …
Small Mammal Populations And Rodent Damage In Nebraska No-Tillage Crop Fields, Kent E. Holm
Small Mammal Populations And Rodent Damage In Nebraska No-Tillage Crop Fields, Kent E. Holm
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
House Mouse Populations And Their Damage To Common Building Insulations, Daryl D. Fisher
House Mouse Populations And Their Damage To Common Building Insulations, Daryl D. Fisher
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
A Proposal To Fertilize The Overton Arm And Gregg Basin Areas Of Lake Mead, Larry J. Paulson
A Proposal To Fertilize The Overton Arm And Gregg Basin Areas Of Lake Mead, Larry J. Paulson
Publications (WR)
Several limnological studies have been conducted in Lake Mead during the past decade. The recent studies clearly show that most of Lake Mead is deficient in nutrients, especially phosphorus, and very low in productivity. The reservoir-wide average total phosphorus concentration for 1981 - 1982 was only 9 mg/m3. This is below levels found In most oligotrophic lakes and reservoirs. Algal biomass, as measured by chlorophyll-a, averaged only 1.5 mg/m3. That also places Lake Mead in the oligotrophic range. Transparency, as measured by a Secchi disc, averaged 9-5 m in Lake Mead during 1981-1982. That far exceeds …
The Probe, Issue 47 - November 1984
The Probe, Issue 47 - November 1984
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association No. 47 November, 1984
EPA vs. Strychnine
Cyanide Deterioration In M-445
Legislation
Forestry ADC
BLM's FY 1985 budget
Nature Conservancy
Peromyscus polionotus
Pigeon Economics
Sandhill Cranes
Letters to Ye Ed
Suggested Curriculum for NADCA Training Program
Animal Rightists
FIFRA Scientific Advisory Panel
Noise-making Devices to scare Birds
The Gamut: A Journal Of Ideas And Information, No. 13, Fall 1984, Cleveland State University
The Gamut: A Journal Of Ideas And Information, No. 13, Fall 1984, Cleveland State University
The Gamut Archives
CONTENTS OF ISSUE NO. 13, FALL 1984
Editorial: Our Fifth Year, 3
Dick Feagler: The Two Conventions, 4
Noted cynic observes the follies of national politics
The Gamut Photography Contest Winners, 9
Brenda L. Lewison, Jim Boland, Janine Bentivegna,
Eileen M. Delehanty, Genevieve Gauthier, Rhoda Grannum,
Buena Johnson, Charles J. Mintz, Tom Ritter, Wayne Sot
Louis Giannetti: Italian Neorealist Cinema, 20
Political philosophies and political realities shaped the work of the great post-war Italian filmmakers
Gary Engle: Krazy Kat and the Spirit of Surrealism, 28
George Herriman's famous cartoon strip reflects early twentieth century artistic ideas. …
The Effects Of X-Irradiation On The Metamorphosis And Budding Of Aurelia Aurita, Michael John Prokopchak
The Effects Of X-Irradiation On The Metamorphosis And Budding Of Aurelia Aurita, Michael John Prokopchak
OES Theses and Dissertations
With the aid of the Aurelia Metamorphosis Test System, the acute or subtle morphological and behavioral effects of irradiation on the Norfolk Aurelia aurita were described and the sensitivity to X-irradiation of those organisms receiving thyroxine and those not receiving thyroxine was compared. Levels of radiation were 0 (control), 5,000, 10,000, 15,000, 20,000 and 40,000 rads. Morphology of the ephyrae, statolith and rhopalia numbers were recorded using the light microscope, Developmental abnormalities of the scyphistomae and ephyrae were recorded with the scanning electron microscope and light microscope. Two major findings from this investigation were the absence of rhopalia and statoliths …
Success In Rat Control In Kuwait, K.S. Al-Sanei, T.M. Zaghloul, A.M. Salit, M.T. Omar, M.M. Balba
Success In Rat Control In Kuwait, K.S. Al-Sanei, T.M. Zaghloul, A.M. Salit, M.T. Omar, M.M. Balba
Vertebrate Pest Conference Proceedings: 11th (1984)
The preliminary rat survey prior to the actual attack phase of Rat Control Program in Kuwait revealed an infestation rate with the Norway rat, Rattus norveqicus, in buildings ranging between 32.7% and 70.7%. The comparatively high infestation was observed in 92.5% of Kuwait buildings. Moreover the infestation reached 99% in certain districts of the country. This high infestation was associated with an increase in rat-borne diseases particularly murine typhus, salmonellosis, rat-bite fever and certain parasitic diseases. A programme for rodent control in Kuwait was initiated through a political decision by the cabinet which gave the full responsibility of rodent …
Hazards To Golden-Mantled Ground Squirrels And Associated Secondary Hazard Potential From Strychnine For Forest Secondary Pocket Gophers, R. Michael Anthony, Gerald D. Lindsey, James Evans
Hazards To Golden-Mantled Ground Squirrels And Associated Secondary Hazard Potential From Strychnine For Forest Secondary Pocket Gophers, R. Michael Anthony, Gerald D. Lindsey, James Evans
Vertebrate Pest Conference Proceedings: 11th (1984)
Radio telemetry and capture-recapture techniques were used to evaluate the hazards to golden-mantled ground squirrels ( Spermophilus lateralis) from hand baiting with 0.5% strychnine-treated for western pocket gophers (Thomomys mazama) on conifer plantations in eastern Oregon. Toxicology data were collected on field-killed and caged ground squirrels and on caged mink (Mustela vison, great horned owls (Bubo virginianus), and red-tailed hawks (Buteo jamaicensis). Ground squirrel populations were reduced 50% to 75% following underground baiting for pocket gophers. Maximum amount of strychnine found in cheek pouches and carcass of a field-killed golden-mantled ground …
Commingling Of Norway And Roof Rats With Native Rodents, Rex O. Baker
Commingling Of Norway And Roof Rats With Native Rodents, Rex O. Baker
Vertebrate Pest Conference Proceedings: 11th (1984)
The ecology of plague relies on the intermixing (commingling) of animal hosts and their ectoparasites. There has been a noticeable increase in commingling of rats and ground squirrels in Southern California in recent years. This paper discusses this phenomenon in Los Angeles and Orange Counties, where it occurs, how it results from man's activities, and the ecology of varying locations. The role of fleas as vectors of plague and the intermixing of fleas between hosts are discussed. Action to reduce the incidence of commingling and the threat of plague to the urban society is addressed.
Efficacy Of Three Anticoagulant Rodenticides For The Control Of Poison-Shy Rattus Rattus, Devendra Bhardwaj, Ishwar Prakash
Efficacy Of Three Anticoagulant Rodenticides For The Control Of Poison-Shy Rattus Rattus, Devendra Bhardwaj, Ishwar Prakash
Vertebrate Pest Conference Proceedings: 11th (1984)
House rats (Rattus rattus) which do not consume a lethal dose of zinc phosphide develop poison-shyness after a single exposure. The surviving poison-shy rats cannot be baited again with zinc phosphide for about three months. Poison-shy rats were separately given anticoagulant baits (brodifa-coum 0.005%, coumatetralyl and warfarin 0.025%) in no-choice tests. The first two anticoagulants were found to be the most efficient ones. It was observed that those R. rattus which had consumed 56.7 mg/kg or more zinc phosphide died sooner (P < 0.05 to 0.1) after anticoagulant poisoning when compared with normal rats. It is conjectured that prothrombin inhibition is accelerated in the liver of poison-shy R. rattus due to the action of phosphine present in the earlier ingested sublethal dose of …