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Taxonomy Of The Neotoma Albigula-Group Of Woodrats In Central Mexico, E. Raymond Hall, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Study of specimens collected from critical localities since 1944 reveals that: Neotoma montezumae and N. leucodon zacatecae are indistinguishable from earlier named taxa; N. latifrons is a subspecies of an earlier named taxon; and N. palatina, previously known from only one specimen and thought by some mammalogists to be merely an aberrant individual of Neotoma albigula, is a species distinct from N. albigula as Goldman tentatively decided when he named it 64 years ago. In the narial passage, the partition formed by the vomer that extends well behind the hard palate as a sword-like projection is present in …

Feeding Responses Of The Sweetclover Weevil To Various Sugars And Related Compounds, W. R. Akeson, Francis A. Haskins, Herman J. Gorz, G. R. Manglitz

Department of Agronomy and Horticulture: Faculty Publications

The sweetclover root disk bioassay was used to test the activity of 21 sugars and related compounds as feeding stimulants for the sweetclover weevil Sitona cylindricollis Fähraeus. Of the compounds tested, sucrose was the most effective feeding stimulant. Compounds with moderate stimulant activity were fructose, glucose, galactose, mannose, myo-inositol, and maltose. Slightly active feeding stimulants included ribose, xylose, sorbose, and sedoheptulose. Arabinose, arabitol, mannitol, xylitol, cellobiose, raffinose, soluble starch, ascorbic acid, glucuronic acid, and glucosamine failed to exhibit feeding stimulant activity in these tests, Four compounds (arabinose. ascorbic acid, glucuronic acid, and mannitol) were tested for feeding deterrent activity, and …

Agricultural Experiment Station News July 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
DEPARTMENTAL HOUSEKEEPING AND EQUIPMENT REVIEW
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – JULY 1970

Bibliography Of Diseases And Parasites Of Marine Fish And Shellfish (With Emphasis On Commercially Important Species), Carl J. Sindermann

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The literature on diseases and parasites of marine animals has been accumulating at an accelerating rate in recent decades, and at a seemingly geometrical rate in the past few years. Reviews of selected aspects of the subject have appeared (Cheng, 1967; Sindermann, 1966; Sindermann and Rosenfield, 1967). References listed in these papers include a significant, but still a small part, of the available literature. With the proliferation of journals in many languages throughout the world, a complete bibliography, even in a narrow area of research, is almost an impossibility. Then too, the daily appearance of new published information represents an …

Misidentification And Sire Evaluation, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Biases in evaluation of sires result from misidentified records in the sire group averages used for sire evaluation. The bias increases as the fraction of misidentified cows increases. Use of variance components estimated from misidentified records also contributes to the bias. Estimates of the correlation between estimated and true genetic value, as well as estimates of genetic progress due to selection, are biased when misidentified records are included in sire group averages.

Influence Of Opacity On The Pulsational Stability Of Massive Stars With Uniform Chemical Composition, Richard Stothers, Norman R. Simon

Norman R. Simon Papers

The maximum mass of homogeneous stars which are stable against nuclear-energized pulsations has been re-determined by using a full opacity formula and an accurate treatment of the equilibrium structure of the outer layers where non-scattering sources of opacity are important damping agents. Sixteen composition mixtures were used, covering the range 0 ≤ Y ≤ (1 - Z) and 0 ≤ Z ≤ 0.05. The nuclear energy sources were taken to be the CN cycle and the triple-a process. Due to the primary influence of bound-free absorption by metals (and, to a lesser extent, of free-free absorption by hydrogen and …

Agricultural Experiment Station News June 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
COLLEGE OF HOME ECONOMICS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – June 1970
STATION AND RESEARCH BULLETINS PRINTED

Whole Issue Nebraska Bird Review (June 1970) 38(2)

Nebraska Bird Review

TABLE OF CONTENTS

Dragonfly Migrations Observed in Nebraska in 1969 ..................22

Sandhill Cranes ..................23

The Sixty-ninth Annual Meeting ..................26

1969 (Twelfth) Fall Occurrence Report ..................27

Notes ..................40

The Prairie Naturalist Volume 2, No.2 June, 1970

The Prairie Naturalist

EDITORIAL: Ecocide on the Sheyenne? ▪ Paul B. Kannowski

NEW RECORDS OF VASCULAR PLANTS IN NORTH DAKOTA ▪ Robert E. Stewart

SOME LOCAL NATIVE PLANT LOSSES AND SOME SAL V AGE ▪ O. A. Stevens

CHRISTMAS BIRD COUNTS IN NORTH DAKOTA ▪ Robert N. Randall

ENVIRONMENTAL DESIGN IN COMMUNITY PLANNING ▪ Cameron Man

DISTRIBUTION OF THE SCIRPUS VALIDUS COMPLEX IN NORTH DAKOTA ▪ Richard L. Ward

Record In Rock: A Handbook Of The Invertebrate Fossils Of Nebraska, Roger K. Pabian

Conservation and Survey Division: Faculty and Staff Publications

Table of Contents:

Introduction
What Are Fossils? How Do They Form?
Fossilization
How Are Fossiliferous Rocks Formed?
What is Paleontology?
What Can Fossils Tell Us?
Fossils and Geologic Time
Fossils as Environmental Indicators
Fossils and Conservation
How Are Fossils Named?
Where Are Fossils Found?
Collecting Courtesy
Tools for Collecting Fossils
Tips on Collecting Fossils
Safety Rules
Quarry Safety
Safety Don'ts to Remember
Preparation of Specimens
A Bit of Advice
General Characteristics of Nebraska's Important Fossils
Phylum Protozoa (Single-Celled Animals)
The Living Protozoan
Fossil Protozoans from Nebraska
Phylum Porifera (Pore Bearers or Sponges)
The Living Sponge
Fossil Sponges from Nebraska
Phylum …

Positive And Negative Prejudice: Interactions Of Prejudice With Race And Social Desirability, Richard A. Dienstbier

Department of Psychology: Faculty Publications

Two studies were conducted in order to investigate positive prejudice toward Negroes. By defining positive prejudice as favoritism toward Negro stimulus persons over white stimulus persons of identical personality descriptions, it was possible to compare patterns of Negro bias on a variety of measures. The results of Study I indicated that positive Negro prejudice was more likely when stimulus persons at the positive personality level were compared. The results of Study II indicated that dogmatism and rigidity and attitudes associated with authoritarian ism are negatively related to positive prejudice. Dimensions of formality of relationships and antisubordination of Negroes were useful …

Agricultural Experiment Station News May 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
MULTIDISCIPLINE RESEARCH
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – May 1970
BULLETINS PRINTED

Thermal Requirements To Protect Aquatic Life, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

Water temperatures affect aquatic organisms in a number of ways, both directly and indirectly. Some of the latter effects are quite subtle. High temperatures can have direct lethal effects but sublethal levels operating over long periods can be just as harmful through delayed lethal effects and the production of nonlethal stresses which eventually result in changes in the population, reduced growth or reproduction, and the lowering of resistance to parasites, dis ease, and competitors. Temperature, in combination with certain other factors such as day length, influences re producing processes. High water temperatures may stimulate or retard migration, spawning, feeding, and …

Misidentification In Estimating The Paternal Sib Correlation, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Misidentification of sires of cows in paternal half-sib analyses of variance biases the estimate of heritability downward. Four models o£ misidentification yield approximately the same reductions in estimated heritability. The reduced estimates are approximately p² of the actual heritability where p is the fraction of cows whose sire is correctly identified. The reduction in heritability estimates from daughter-dam regression would be to a fraction, p, of the actual heritability where p is the fraction of dams correctly identified. Empirical paternal sib analyses of New York Dairy Herd Improvement Holstein records suggest that misidentification is more common among grade cows …

Effects Of Age, Herd, And Herd Status On Classification Scores Of Jersey Cattle, H. L. Barr, H. W. Carter, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Classification was arranged for herds belonging to the official Jersey program concurrently with classification for Jersey research herds. Herds were categorized as official, registered research and grade research. Cattle were also grouped as 2 year olds, 3 to 4 year olds and 5 year olds.

Differences for herd status were significant (P < .05) for all type traits except stature, breed character, feet and legs and fore udder. Research cattle scored higher only in dairy character and udder quality. Differences between registered research and grade research cattle were not significant.

Differences for age were significant for all traits except feet and legs, mammary and rear udder. Five year-olds scored highest in final score, general appearance, stature, breed character, back and rump, and chest and barrel. The traits relating to mammary system were scored higher on younger cows.

For …

Agricultural Experiment Station News April 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTORS OFFICE
THE NEW SOUTH CENTRAL STATION
PERSONNEL ACTIONS
GENERAL NOTES
GRANTS AND CONTRACTS
AGRICULTURAL EXPERIMENT STATION PUBUCATIONS - April 1970

Sod Webworm (Lepidoptera: Pyralidae: Crambinae) Moths Collected In Light Traps, Elvis A. Heinrichs, Ellis Matheny

Department of Entomology: Faculty Publications

Thirteen species of sod webworm moths were collected during 1968. Distinct differences in fijght dates occurred among the species. Trap data indicated that seven species were univoltine while six were most likely multivoltine.

Sod webworm species collected as adults in light traps from May to October: Pediasia trisecta, P mutabilis, Chrysoteuchia topiaria, Agriphila vulgivagella, A. ruricolella, Microcrambus elegans, Argyria nivalis, Crambus alboclavellus, C. praefectellus, C. laquetellus, C. leachellus, C. satrapellus

Genetic Studies Of Induced Mutants In Melilotus Alba. Ii. Inheritance And Complementation Of Chlorophyll-Deficient Mutants, B. G. Gengenbach, H. J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Six ethyl methanesulfonate-induced mutants of Melilotus alba Desr. were studied. Five of the mutants behaved as monogenic recessives. In the sixth mutant, two independent recessive alleles were responsible for the observed phenotype. Of these two genes, one had a phenotypic effect similar to the five single-gene mutants. The other (the veined gene) caused a chlorophyll deficiency in which the leaf veins were darker in color than the tissue between the veins. Complementation analysis revealed that five of the seven genes detected iu the mutants were nonallelic. Suggested designations for the five genes are ch₄, ch₅, ch …

Field Manual Fm 55-8, Transportation Intelligence, 12 March 1970, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

Obviously, reliable information about potential enemy transportation equipment, facilities, systems, capabilities is vital, since our forces may need to prevent an enemy from using them and we may need to use them. Transportation or mobility intelligence is such reliable information. This is a very thorough document describing the collection, production, and dissemination of transportation intelligence. The emphasis of this manual is collection of relevant information in the field.

The manual describes organizations and personnel in the army responsible for collecting transportation related information. It identifies the national-level military intelligence production agencies as:

(a) The Defense Intelligence Agency (DIA) which was …

Rodent Control In The Hawaiian Sugar Industry, Allen H. Teshima

Vertebrate Pest Conference Proceedings: 4th (1970)

Past and present concepts of rodent control at the 24 sugar plantations of Hawaii are reviewed with particular attention being given to the research efforts of the Experiment Station of the Hawaiian Sugar Planters' Association in improving operational rodent control in sugarcane. Hawaii offers a unique set of conditions: a 2-year crop cycle, a production of over 100 tons of sugarcane per acre, countless numbers of gulches and wasteland bordering crop fields, and a year-long growing season, all having an effect on rat population and habitat.

Importance Of Wildlife Rabies Control, Richard L. Parker

Vertebrate Pest Conference Proceedings: 4th (1970)

ABSTRACT: Rabies in animals has been known in North America for over two centuries, and whether the disease was initially present in wild species or was introduced by dogs, it has been known in skunks for almost a century and a half. Today more rabies cases in wild animals are reported than in domestic animals, and a considerable proportion of both human and domestic animal exposures to the disease are the result of wild-animal contact. The most useful techniques for controlling wild animal rabies today are methods that reduce contact between infected individuals and susceptible individuals; these involve the manipulation …

Pocket Gopher Problems And Control Practices On National Forest Lands In The Pacific Northwest Region, Paul R. Canutt

Vertebrate Pest Conference Proceedings: 4th (1970)

Pocket gophers of concern to foresters in the Pacific Northwest belong to the genus Thomomys (13). The two species believed responsible for most conifer damage are the northern pocket gopher (T. talpoides) which occurs east of the Cascade mountains in Washington, Oregon, and south into the northeastern edge of California and the nearly identical Mazama pocket gopher (j_. mazama), which ranges throughout western Oregon and into north central California (13). Pocket gopher damage is best known to agriculturalists who for many years have suffered losses to root, hay, fruit, and bulb crops, as well as damage to irrigation canals (23). …

Control Of Freshwater Fish With Chemicals, Robert E. Lennon

Vertebrate Pest Conference Proceedings: 4th (1970)

Fish toxicants have been used for nearly 60 years by sport fishery managers to remove predaceous or competing fishes from gamefish waters. The reclamation of lakes and streams by poisoning unwanted fish is considered to be one of the better management tools, and the demand for reclamations is increasing as more waters come under intensive management. Many chemicals have been tried as fish toxicants, but the insecticides rotenone and toxaphene have been most widely used despite their disadvantages of non-selectivity between wanted and unwanted fishes, persistence in water, and toxic effects on aquatic invertebrates. Research in the past 20 years …

Reproduction Inhibitors For Bird Control, M. R. Woulfe

Vertebrate Pest Conference Proceedings: 4th (1970)

Reproduction inhibitors are intended to maintain or control a population at a desired level; toxicants aim at elimination of the population. Azocosterol hydrochloride (SC-12937; 20,25-diazocholestenol dihydrochloride) is a long acting inhibitor of ovulation in the pigeon (Columba liyia) by interfering with cholesterol synthesis and egg yolk formation. Corn impregnated with SC-12937 at the 0.1% level by weight and fed for 10 days has been found to inhibit or diminish reproduction for 5-6 months. Population turnover rate, mortality and longevity of the feral urban pigeon are also discussed.

Agricultural Experiment Station News March 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
STAFF PROMOTIONS - 1970
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – March 1970
BULLETINS PRINTED

Whole Issue Nebraska Bird Review (March 1970) 38(1)

Nebraska Bird Review

TABLE OF CONTENTS

Treasurer's Report ...................... 2

1969 Nebraska Nesting Survey ...................... 3

1969 Fall Meeting and Fall Field Days ......................... 9

1969 Christmas Count ............................ 10

Winter Meeting .................................. ....15

Notes ...................... 16

Book Reviews...................... 20

Pulsation Analysis For Stars In Thermal Imbalance, Norman R. Simon

Norman R. Simon Papers

The effects of thermal imbalance (dS₁/dt ≠ 0) on stellar pulsational stability have largely been ignored in the literature. Here we have used the linear, quasi-adiabatic pulsation theory to make a preliminary investigation of such effects. Analyses of the standard model and of a white dwarf show that, for these cases, "ordinary" terms in the stability integrals greatly outweigh the "extra" terms considered here. The latter become more important when substantial ionization zones exist in the stellar matter. It is argued that the influence of thermal imbalance on pulsational stability should be quite small for stars …

The Prairie Naturalist Volume 2, No. 1. March, 1970

The Prairie Naturalist

EDITORIAL: Speaking of Ecologists ▪ Paul B. Kannowski

NEEDED: AN ETHICAL BASIS FOR ENVIRONMENTAL POLICY ▪ Gordon L. Iseminger

THE POPULATION PARADOX ▪ Gary L. Pearson

THE ENVIRONMENTAL CRISIS—A CALL TO ACTION ▪ Glen A. Sherwood

NORTH DAKOTA—1970 ▪ Philip B. Aus

83rd Annual Report Of The Nebraska Agricultural Experiment Station

Agricultural Research Division: News and Annual Reports

Contents:
Foreword
Administration and Staff
Nebraska Agricultural Experiment Station Research Projects
Experiment Station Publications
Publications of the Staff
Report of Income and Expenditures

Agricultural Experiment Station News February 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S OFFICE
DEPARTMENTAL REPORTS
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS- February 1970
BULLETINS PRINTED