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The Effects Of Channelization In The Missouri River On Fish And Fish-Food Organisms, Earl R. Kendle

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Plans by the U.S. Army Corps of Engineers to channel the Missouri River from Sioux City to Yankton are of great concern to the ecologists interested in this section of the river. The channelization of the last remaining relatively natural sketch of the Missouri River below the main stem reservoirs could prove to be ecologically disastrous. As the present time too little is known in the form of scientifically proven facts of the likely effects on fish and other organisms inhabitating the river. The populations of certain species of fish far downstream from and in the section to be channelized …

Orderly Production And Marketing In The Beef-Pork Sector, John E. Trierweiler, James B. Hassler

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This study will present economic models for analyzing temporal equilibrium positions for the beef-pork sector. The issues of spatial distribution, storage, and meat forms will not be directly analyzed. Grade and yield changes for various carcass classes will, however, be implied in the carrying costs of the animal. The models will be designed such that a number of different factors that affect the production and marketing of beef and pork can be analyzed simultaneously.

Machairodont Cats From The Early Pleistocene Broadwater And Lisco Local Faunas, C. Bertrand Schultz, Larry D. Martin

Bulletin of the University of Nebraska State Museum (1924–2023)

A new species of Ischyrosmilus (I. crusafonti) is reported from the Early Pleistocene Broadwater Local Fauna of Morrill County, Nebraska. Ischyrosmilus sp. is reported from the Early Pleistocene Lisco Local Fauna. Megantereon is reported from the Broadwater Local Fauna and this is the first record of the genus from North America.

Excitation Of The (2P2)3P State Of Helium Near Threshold, Paul Burrow

Paul Burrow Publications

The trapped-electron method is applied to the excitation by electron impact of the (2p²)³P state, the lowest doubly excited state of helium which is stable against auto-ionization. The energy of this state, 59.64±0.08 eV, is in good agreement with theory. An estimate of the slope of the total cross section for excitation of the (2p²)³P state at threshold gives a value of 4 × 10^-20 cm²/eV.

Nebraska Trappers' Guide: A Handbook On The Taking Of Muskrat, Mink, Beaver, And Coyote And The Handling Of Pelts, Edson Fichter, George Hytrek

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Management of any game or fur animal is an effort to insure an annual harvestable surplus. Much of this effort must be placed upon the land. The development and maintenance of habitat--the place where the animals can live--constitutes a large portion of this effort. The objective of habitat development is the increase and improvement of homes for wildlife and thereby the increase in numbers and improvement of the quality of the animals produced. Another important and continuous job of game management. is the annual check on populations--their ups and downs. Information on the numbers of animals is necessary if only …

Bioassay Procedures For Oil And Oil Dispersant Toxicity Evaluation, Gilles Laroche, Ronald Eisler, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

Hazards to marine and estuarine fauna associated with offshore drilling of oil and with transport of large quantities of oils via tankers are numerous and understandable. At present, there is a growing body of evidence on adverse effects to these organisms of crude oil (1) (2) (3) (4) (5) (6) (7) (8) (9) and chemical oil counteracting agents or dispersants (5) (6) (9) (10) (11) (12) (13) (14) (15) (16) (17). These effects are well summarized by Smith (18) and by Carthy and Arthur (19).

Comparatively few workers have studied the influence of oil-dispersant mixtures of marine life. Studies by …

Water Resources News, Volume 2, No. 10, November 1970

Water Current Newsletter

NWRRI Director Named Executive Secretary of Universities Council on Water Resources
1971 Summer Institutes Planned
Research and Development Sources Sought
NWRRI Proposals Submitted
FWQA Booklet on Fish Mortalities
Urban Wastewater Renovation Through Agriculture
Control of Oil Pollution
Environmental Education Bill to White House
Title II Awards for FY 1971
Case Studies in Water Resources Systems Analysis
National Environmental Pollution Conference
UCOWR Annual Meeting Held in Virginia
Reorganizational Plans for Environmental Programs
National Water Commission Studies
Research Review
New Publications Received by the Institute - November

Studies On The Helminth Fauna Of Alaska. Xlix. The Occurrence Of Diphyllobothrium Latum (Linnaeus, 1758) (Cestoda: Diphyllobothriidae) In Alaska, With Notes On Other Species, Robert L. Rausch, D. K. Hilliard

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cestodes representing six species of the genus Diphyllobothrium Cobbold, 1858, were collected from naturally infected terrestrial mammals in Alaska during the period 1949-1970. Additional specimens were reared in experimentally infected animals. Of the species identified, viz., D. latum (Linnaeus, 1758), D. dendriticum (Nitzsch, 1824), D. lanceolatum (Krabbe, 1865), D. ursi Rausch, 1954, D. dalliae Rausch, 1956, and D. alascense Rausch and Williamson, 1958, all but D. alascense were obtained from man after treatment with quinacrine. D. latum occurred most commonly in humans; D. ursi is reported for the first time from this host, and D. lanceolatum in humans was represented …

Raman Scattering From Localized Vibrational Modes In Gap, D. T. Hon, W. L. Faust, W. G. Spitzer, P. F. Williams

P. F. (Paul Frazer) Williams Publications

High-frequency localized vibrational modes of impurities in a III-V compound have been observed by Raman scattering. Three lines from the GaP samples closely correspond to some loccal modes previously reported in infrared studies, and depolarization measurements tend to confirm their proposed assignments. We describe several attractive features of this method for the study of semiconductor impurities.

Collecting Slime Flux Feeding Coleoptera In Japan, Brett C. Ratcliffe

University of Nebraska State Museum: Entomology Papers

Sappy wounds of injured or diseased trees entice a wide variety of insects. Carter (1945) stated that when fluxing is prolific or long continued, air-borne bacteria, yeasts, and fungi contaminate the oozing sap, ferment it and produce the material called slime flux. Apparently the oozing flux is toxic to the flux site and so prevents callusing by the tree. Consequently, the same tree usually can be a good collecting site for insects from year to year. My stay in Japan spanned four years, and collecting at flux sites was one of the most fruitful areas of endeavor. As soon as …

Agricultural Experiment Station News October 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
1970•71 ENROLLMENTS
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - October 1970
BULLETINS PRINTED

Lasiotocus Trachinoti Sp. N. (Digenea: Monorchiidae) From The Pompano, Trachinotus Carolinus (Linnaeus), Along The Coast Of Florida, Robin M. Overstreet, Charles E. Brown

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The monorchiid trematode Lasiotocus trachinoti sp. n. is described from the intestine and the pyloric ceca of young Trachinotus carolinus. It is most like L. mulliof Bartoli and Prévot, 1966, but differs from it primarily by being smaller and having cirrus spines more evenly dispersed.

Water Resources News, Volume 2, No. 9, October 1970

Water Current Newsletter

Water Resource Projects Will Be Scrutinized
Mann Appointed to National Water Commission Staff
Klein Resigns
National Irrigation Symposium
Water Pollution and Water Quality
Closed Industrial Wastewater Systems
47 Rivers as Potential Wild or Scenic Streams
Community Water Supply Study Revealed
Office of Saline Water Annual Report
New Federal Legislation on Municipal Water Supplies
Underground Injection of Wastewaters
New Guidelines Will Place Greater Emphasis on Alternatives
Environmental Quality Education Bill Passed
Wastes Linger in Long Island Ground Water
Research Review
Interdisciplinary Water Resources Seminar
New Publications Received by the Institute

Fluorometric Assay Of Free And Bound, Cis- And Trans-O-Hydroxycinnamic Acid In A Single Plant Extract, Francis A. Haskins, H. J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Fluorescence is measured on unhydrolyzed and hydrolyzed plant extracts, with and without prior ultraviolet treatment. Readings permit direct determination of free o-hydroxycinnamic acid (o-HCA), free trans-o-HCA, total o-HCA, and total trans-o-HCA. Levels of bound trans-o-HCA and free and bound cis-o-HCA are calculated by appropriate subtraction.

Sweetclover Weevil Feeding Stimulants: Variation In Levels Of Glucose, Fructose, And Sucrose In Melilotus Leaves, W. R. Akeson, H. J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Youngest fully expanded leaves, from plants of M. Officinalis (L.) Lam. seeded at weekly intervals but harvested on the same day, were approximately 1.5 to 2.0 times as high in content of glucose, fructose, and sucrose at all stages of growth as leaves from comparable plants of M. infesta Guss. These plants varied in age from 3 to 14 weeks. Levels of glucose and fructose increased with increasing plant age in both species. Sucrose content increased in M. officinalis but decreased in M. infesta as the plants matured. When plants of approximately the same age were sampled at six different …

Increase In Size Of Eimeria Separata Oocysts During Patency, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Examinations of 18 consecutive fecal samples collected at 6-hr intervals from infected rats showed that oocysts increased in length and width by approximately 40% from the beginning to the end of the patent period. Unsporulated oocysts were first observed in the 3rd fecal collection, 84 to 90 hr post-inoculation (PI) and 100 of these measured 9.9 to 14.3 by 8.8 to 12.1 μ (mean 11.7 by 10.1). Patency ended with the 15th fecal collection, 156 to 162 hr PI, and 100 unsporulated oocysts from this sample measured 14.3 to 17.6 by 13.2 to 15.4 μ (mean 16.3 by 14.2). Despite …

Rapid Detection Of O-Hydroxycinnamic Acid And Beta-Glucosidase In Melilotus Alba, Francis A. Haskins, H. J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

The tests utilize small samples of leaf tissue crushed on sheets of filter paper. For detection of o-hydroxycinnamic acid (o-HCA), a crude preparation containing sweetclover β-glucosidase is added to a spot of crushed tissue to insure hydrolysis of glucosidically bound o-HCA. An extract containing cis-o-HCA glucoside is added to another tissue spot to serve as the substrate for the detection of β-glucosidase activity. Finally, all spots are moistened with NaOH and are scored for fluorescence under ultraviolet light. Results of qualitative and quantitative tests on plants representing various genotypes are compared. The importance of exposing plants to sunlight before testing …

Ornitrol: Recent Developments, M. R. Woulfe

Bird Control Seminars Proceedings

This talk today will be on recent developments with Ornitrol. All the recent developments have been with blackbirds and grackles; and, unfortunately, the man who has done the most recent work is sitting right here, so I can't steal his data very well!

We have done some work since I spoke to you last on some of the pharmacol¬ogy of SC-12937--which is an axocholesterol the active ingredient of Ornitrol. One of these developments is the determination of the half-life of SC-12937, which is 28 days. This is the reason, we feel, for its prolonged activity in birds. It is stored …

Red-Winged Blackbird Movements On Lake Erie Islands, Mildred Miskimen

Bird Control Seminars Proceedings

What I am going to say this afternoon is based entirely on field observations. As I said, this is a progress report. Maybe in another five or ten years I shall have enough data so that I can come back and show you something more detailed. The area with which we are dealing is the archipelago that runs across between Ottawa county, Ohio, and Ontario, Canada. I have not done any work on Point Pelee, but I have worked on Pelee Island, on all of the U.S. islands, and along the North shore around Sandusky bay. What I am considering …

Territorial Male Red-Winged Blackbird Distribution In Wood County, Ohio, M. I. Dyer

Bird Control Seminars Proceedings

Red-winged blackbirds (Agelaius phoneiceus) have been studied intensively in the United States and Canada by research biologists of the Bureau of Sport Fisheries and Wildlife for more than a decade. The detailed information on popula¬tion dynamics of the species that has been acquired is now being assembled and assessed. Definite patterns in the distribution of some of the eastern and mid-western populations have become apparent (Dyer et al., 1072; Power, 1069, 1970). A very complex distribution of territorial densities occurs in the western Lake Erie Basin of the U.S. and Canada (Dyer et al., 1972), where there are significant differences …

Sampling Of Corn To Assess Bird Damage: A Preliminary Review Of A Comprehensive Study, Philip Granett, John T. Linehan

Bird Control Seminars Proceedings

"How large a sample is needed to survey the bird damage to corn in a county in Ohio or New Jersey or South Dakota?" Like those in the Bureau of Sport Fisheries and Wildlife and the U.S.D.A. who have been faced with a question of this sort we found only meager information on which to base an answer, whether the problem related to a county in Ohio or to one in New Jersey, or elsewhere. Many sampling methods and rates of sampling did yield reliable estimates but the judgment was often intuitive or based on the reasonableness of the resulting …

The Effects Of Ornitrol On Wild Populations Of Red-Winged Blackbirds And Grackles, Robert C. Fringer, Philip Granett

Bird Control Seminars Proceedings

For the past three years the New Jersey Department of Agriculture, in coop¬eration with the New Jersey Agricultural Experiment Station, has conducted field evaluations on the effects of reproductive suppressants on wild populations of red-winged blackbirds. These studies have been performed in conjunction with the North East 49 (a Federally sponsored regional project which presently has nine states in the North East and Ohio cooperating to develop means to combat bird damage to agricultural crops) regional project on control of bird depredations.

Field evaluations in 1968 and 1969 centered around the effects of TEM (tri-ethylene melamine) on the reproductive rates …

Studies On The Movements Of Blackbirds And Starlings In The West End Of Lake Erie, Maurice L. Giltz, Harold E. Burtt

Bird Control Seminars Proceedings

The operation of decoy traps at The North Central Farm, Vickery, Ohio, the Ottawa-Crane Creek-McGee Marsh Area, and on the Bass Islands in Lake Erie, has permitted the banding of thousands of Red-winged Blackbirds (Agelaius phoeniceus), Common Grackles (Quiscalus quiscala), Brown-headed Cowbirds (Molothrus ater), and Starlings (Sturnus vulgaris). The repeats and returns of these banded birds justify inferences concerning the sex and age ratios in the populations and the stability of the populations, as well as indicating the seasonal migrations and movements of the populations.

Physiological Interpretations Of Morphological Variation In The Red-Winged Blackbird, Dennis M. Power

Bird Control Seminars Proceedings

A number of widespread species vary morphologically throughout their range. Ultimately such geographic variation appears to be adaptive and represents local evolutionary responses to the pressures of natural selection. Detailed knowledge of size, shape and color variation in species such as the Red-winged Blackbird (Agelaius phoeniceus) may eventually allow the identification of breeding localities of autumn and winter flocks simply from morphological evidence. Knowledge of variation in behavioral and physiological parameters also will be useful in assessing the effect of various control devices.

The present study stems from an attempt to elucidate the adaptive significance of geographic variation of redwings …

Photoperiodic Control Of The Testicular Cycle In The Eastern Red-Winged Blackbird, (Agelaius Phoeniceus Phoeniceus), Joel T. Kerlan

Bird Control Seminars Proceedings

The annual testicular cycle of many avian species which reside in temperate zones can be divided into two stages: the recrudescent stage and the regressive stage. The recrudescent stage is characterized by an increase in testis size which reflects the transition from an aspermatogenic condition to a spermatogenic condition. At the end of the breeding season, the birds enter the regressive stage. During this period a marked decrease in testis weight and volume indicates the return to an aspermatogenic condition. This stage is maintained until the next spring when presumably the increasing photoperiod induces gonadal recrudescence. If the birds are …

Serum Calcium Levels Of The Red-Winged Blackbird (Agelaius Phoeniceus), Tim Burkholder

Bird Control Seminars Proceedings

Serum calcium levels were analyzed by atomic absorption spectrophotometry during different stages of development of the Red-winged Blackbird (Agelaius phoeniceus). The effects of the reproductive cycle, growth, and soil calcium on mean serum calcium levels in this species were analyzed as were the effects of mean serum calcium levels on eggshell thickness, hatchability, and egg production.

1969 Assessment Of Blackbird Depredations On Field Corn In Ohio And Michigan, Ronald D. Ogden

Bird Control Seminars Proceedings

In 1966, when the annual damage survey was initiated, Dr. C. R. Weaver, Statistician at the Ohio Agriculture Research and Development Center, Wooster, Ohio, drew up a sampling plan, balancing costs against desired precision. The plan included three combinations of fields to be sampled and stations per field for high damage areas, three combinations for moderate damage areas, and two combinations for light damage areas. Alternatives for the high damage area included (1) 497 fields with two stations per field (± .48), (2) 775 fields with two stations per field (± .26), and (3) 235 fields with ten stations per …

Research Panel Discussion, John Seubert

Bird Control Seminars Proceedings

Panel Members: Morley R. Kare, Robert G. Schwab and M. R. Woulfe

Nonbiolog1cal Alteration Of 3-Chloro P-Toluidine Hydrochloride (Drc-1339) In An Aqueous Solution, T. R. Darden, Robert G. Schwab

Bird Control Seminars Proceedings

The effectiveness of 3-chloro p-toluidine (DRC-1339) as an avicide, particular¬ly on the European starling, has been adequately demonstrated (DeCino, Cunningham, and Schafer, 1966; Schwab, 1965, 1966, and 1967). Methods of applying the com¬pound which have proved useful range from the standard baiting technique (Besser, Royall, and DeGrazio, 1967; Royall, DeCino, and Besser, 1967; West, 1968) to pos¬sible aerial application of the compound to roosting sites (Schwab, 1967). These methods, particularly the latter, inherently lead to widespread environmental exposure. As the chemical name implies, DRC-1339 is a chlorinated hydrocarbon. It thereby carries the stigma, whether justifiable or not, of environmental persistence …

The Relationship Of Bird Habitats To Disease Producing Fungi, Robert Weeks

Bird Control Seminars Proceedings

Two fungi, Cryptococcous neoformans and Histoplasma capsulatum, which are pathogenic to some animals and humans, are found in association with the habitats of birds. This association will be discussed by a review of Cryptococcosis and C. neoformans in association with pigeons and their habitats, reviewing histoplasmosis and relating the experience of the Soil Ecology Unit Mycoses Section in Kansas City with H. capsulatum associated with blackbird and starling roosts during the past nine months of this year.