Digital Commons Network^™

Improved Selective Medium For The Isolation Of Treponema Hyodysenteriae, Robert A. Kunkle, J. M. Kinyon

School of Veterinary and Biomedical Sciences: Faculty Publications

An agar medium with improved selection for Treponema hyodysenteriae was developed. Cultures of T. hyodysenteriae and T. innocens, feces from 11 clinically normal pigs, and colonic contents from 6 pigs with gross lesions consistent with swine dysentery were diluted in phosphate-buffered saline and plated on Trypticase soy agar (BBL Microbiology Systems, Cockeysville, Md.) with 5% citrated bovine blood (TSA), TSA with 400 ,ug of spectinomycin per ml (TSA-S400), TSA-S400 with 25 ,ug each of colistin and vancomycin per ml, and TSA with 5% pig feces extract and five antimicrobial agents (spiramycin, rifampin, vancomycin, colistin, and spectinomycin) (BJ). Viable numbers …

1988 Nebraska Swine Report

Nebraska Swine Reports

1988 Nebraska Swine Report

Farm Income And Government Payments To Agriculture In Nebraska, James R. Schmidt

Center for Public Affairs Research (UNO): Publications

Farm income in Nebraska reached a record level of $2,117 million in 1987, of which $1,275 million (or sixty percent) was received in the form of direct government payments. This chapter traces the recent history of farm income and direct government payments and describes the elements of the farm program that have had significant influence upon the Nebraska economy. The sensitivity of the Nebraska economy to movements in the farm sector is analyzed. Results from an econometric simulation analysis indicate that relatively strong multiplier effects occur in the state economy as a result of movements in farm income.

Creating A Protocol For Reconstructing Weaving Technologies: Early Compound Non-Silk Fabrics Found In Egypt, M. M. El-Homossani

Textile Society of America: Symposium Proceedings

Introduction

The examination of weft-faced compound non-silk fabrics found in Egypt (ca. 3rd - 7th century A.D.), in the Royal Ontario Museum collections, revealed many structural differences and similarities. Single, double and ply yarns with apparent variation in size and set density were observed. Some have their twist in "S" direction, others in "Z" direction, with diverse amount of twist. Wool yarns make up the majority of the constructions, but in many cases wool yarns alternate with cotton and sometimes linen yarns. Tabby and 1/2 twill weaves are employed as binding weaves, while the compound weave structures comprise 1:1 and …

"Little Trifles": Understanding Victorian Fancywork, Beverly Gordon

Textile Society of America: Symposium Proceedings

As professionals working in museum and academic settings, many of you have probably found yourselves feeling at times like "poor cousins" -- textiles simply do not garner the same prestige as other types of artifacts and art forms. I now find myself in a situation where I feel like an even poorer cousin: although I am involved with textiles of all kinds, I find myself particularly fascinated or compelled by a type of textile-related artifact that is rarely considered seriously, even by textile historians. I am speaking of fancywork, specifically of small items such as tidies, wallpockets, sewing cases, flowerpot …

Variable Resistance To Homopterans In Rice Cultivars, E. A. Heinrichs

Department of Entomology: Faculty Publications

Rice-breeding programs in Asia have successfully provided farmers with cultivars that have genetic resistance to the major insect pests, including the leafhoppers and planthoppers. The widespread planting of resistant cultivars has resulted in the selection of hopper populations that have overcome the resistance factor(s) in the plant. Procedures to measure the degree and rate of selection for virulence on resistant cultivars have been developed, and rice-breeding strategies to increase the stability of hopper-resistant cultivars have been implemented.

Resistant cultivars have been widely and successfully used in Asia and Central and South America in the management of certain rice homopterans. Rice-breeding …

Technological Change And Child Behavior Among The !Kung, Patricia Draper, Elizabeth Cashdan

Department of Anthropology: Faculty Publications

How does change in one part of a social system affect other parts? This is the central question that must be answered in order to understand the process through which culture changes. This paper is about a small piece of the problem. It investigates how changes in subsistence economy affect child behavior and the relations between parents and children among !Kung Bushmen of Western Botswana. We will show that the adoption of a sedentary life style and a new technology of food production is associated with changes in the social interactions between parents and children and between children and their …

Duration Of Fertility Of Turkeys Inseminated At Different Times After The Onset Of Photostimulation, M. R. Bakst

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

To investigate the relationship between photostimulation, ovary and oviduct weights, and oviducal sperm-storage tubule (SST) development and functional capacity, 33-week-old turkey hens were placed in four groups of 15 hens each. Each group was inseminated three times in 30 min with 50 × 10⁶ spermatozoa (a total of 150 × 10⁶ spermatozoa) on the day of photostimulation, or on Days 7, 14, or 21 after the onset of photostimulation (Groups A, B, C and D, respectively). From weeks 4 to 8 after photostimulation, 5 additional hens were inseminated each week and then killed 24 h later to determine …

New Distributional Records Of Lizards In Wyoming, Randall Morrison, Lawrence Powell

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Based upon published evidence (Baxter and Stone, 1985), either lizard distributions in Wyoming are extremely patchy or they are not well known. It is apparent that many of the localities for different species are coincidental and clustered in particular areas of the state, suggesting that parts of the state are better collected than others. and that much is still to be learned about the distributions of Wyoming lizards. We report some observations of lizards in Wyoming, some with vouchers and some without, that are of some distributional significance. Five species or subspecies of lizards were observed at four localities.

Patterns Of Resource Use By A Drosophilid (Diptera) Leaf Miner On A Native Crucifer, S. K. Collinge, Svata M. Louda

School of Biological Sciences: Faculty Publications

Distribution and damage of Scaptomyza nigrita Wheeler on its host (bittercress, Cardamine cordifolia A. Gray), a native perennial crucifer, were examined over two growing seasons in relation to leaf position. Concentrations of defensive compounds (glucosinolates) and of nutritive compounds (total nitrogen, free amino acids, soluble carbohydrates) were also examined. The fly-host plant relationship was studied in sun and shade habitats at two sites. Oviposition and leaf-mining damage were concentrated on the lower central leaves of a stem in both habitats. These mature leaves have lower glucosinolate concentrations than new leaves. Adult densities and larval feeding damage were consistently and significantly …

Sensitivity To Ingested Sulfites, Steve L. Taylor, Julie A. Nordlee

Department of Food Science and Technology: Faculty Publications

Sulfiting agents, including sodium and potassium bisulfite, sodium and potassium metabisulfite, sodium sulfite, and sulfur dioxide, have enjoyed widespread use as food and drug ingredients. The oral ingestion of these sulfiting agents is now known to trigger asthma in a small subset of the asthmatic population. The best evidence suggests that perhaps 150,000 to 200,000 individuals in the United States may be sulfite sensitive. Although the mechanism of sulfite-induced asthma remains unknown, several possibilities have been considered, including inhalation of sulfur dioxide (SO₂) while swallowing, an IgE-mediated reaction, and a deficiency of sulfite oxidase leading to impaired sulfite …

Mitochondrial Dna Polymorphism In Three Antillean Island Populations Of The Fruit Bat, Artibeus Jamaicensis, Dorothy E. Pumo, Everett Z. Goldin, Beth Elliot, Carleton J. Phillips, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

The Neotropical fruit bat, Artibeus jamaicensis, occurs throughout Latin America and on many islands in the Caribbean. Populations from Jamaica (in the Greater Antilles) to Barbados (in the Lesser Antilles) have been classified as a subspecies (A. j. jamaicensisi separate from that on the Lesser Antillean island of St. Vincent (A. j. schwartzi). Mitochondrial DNA (mtDNA) was isolated from 54 individuals collected on these islands, analyzed by digestion with restriction endonucleases, and the restriction sites were mapped. Three different mtDNA genotypes (16,000 ± 200 bp) were identified: J-1 (16 animals from Jamaica, one from St. Vincent, …

Key To Acanthocephala Reported In Waterfowl, Malcolm Edwin Mcdonald,

United States Fish and Wildlife Service: Publications

This is the third part of a continuing series on helminths reported in waterfowl (McDonald 1974, 1981). Coots and moorhens (in Family Rallidae, Order Gruiformes) are included with the Anatidae of Anseriformes. The goal of these studies is complete coverage of waterfowl helminths of the world, although the original incentive-inadequate knowledge of the parasites of North American waterfowl- is less true now. World coverage is desirable because the world distribution of the family, tribes, and even many species of waterfowl often results in world distribution of parasites. The format of this key follows that of the others in the series: …

Turkey Hen Fertility And Egg Production After Artificial Insemination And Multiple Oviduct Eversion During The Pre-Laying Period, M. R. Bakst

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The onset of egg production (mean 18 · 3 days after the onset of photostimulation) and the rate of egg production (flock averaged 4 · 9 eggs per bird per week for the first 8 weeks of egg production) were not affected by 5 days of twice daily oviduct eversion ('venting') in the pre-laying period when compared to unvented controls. After the onset of photostimulation, pre-laying hens were inseminated twice daily on Days 12 to 16 with 3 μl semen containing 15 × 106 spermatozoa, and compared with groups of hens inseminated once daily on Days 15 and 16 with …

Pheasants: Symptoms Of Wildlife Problems On Agricultural Lands: Proceedings Of A Symposium Held At The 49th Midwest Fish And Wildlife Conference (Milwaukee, Wisconsin: December 8, 1987), Diana L. Hallett, William R. Edwards, George V. Burger

Galliformes Specialist Group and Affiliated Societies: Conference Proceedings

100 years of ringnecks: An historical perspective on pheasants in North America, George V. Burger

Distribution and abundance of the ring-necked pheasant in North America, Robert B. Dahlgren

Federal pheasants-Impact of federal agricultural programs on pheasant habitat, 1934-1985, Alfred H. Berner

Wildlife ppportunities within federal agricultural programs, Stephen J. Brady and Rex Hamilton

The dynamics of pheasant Abundance During the transition of intensive row-cropping in Illinois, Stanley L. Etter, Richard E. Warner, G. Blair Joselyn, and John E. Warnock

Habitat management: How well do we recognize the pheasant facts of life? Richard E. Warner

A population model as an aid …

Late Pleistocene Pronghorn, Antilocapra Americana, From Natural Trap Cave, Wyoming, John Chorn, Barbara A. Frase, Carl D. Frailey

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Natural Trap Cave, Wyoming, has yielded one of the more reliable records of Antilocapra from the Late Pleistocene of North America. Generic assignment is based on horn cores from two individuals, with a minimum of 13 individuals represented by other elements. Morphometric analysis of postcranial material indicates that this form is indistinguishable from the living A. americana. Fossils were recovered from a stratum dated at 17,000-20,000 yr BP. Presence of Antilocapra at other sites is probably over-reported. Secure records based on horn cores are known from only two other sites. Antilocapra americana may have been the preferred prey of …

Butterflies Of The Niobrara Valley Preserve, Nebraska, Neil E. Dankert, Harold G. Nagel

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Seventy species of butterflies and skippers are reported from the Niobrara Valley Preserve. Twenty-four new county records are added to Brown County while 42 are added to the Keya Paha County checklist, bringing the total species/county to 63 and 67 respectively. Notes on numbers, flight periods, and habitat preferences are presented for each of the seventy species found on the Preserve. Twelve western and five eastern species reach their distributional limits in the Preserve area. Five hybrid butterflies involving three species of Basilarchia were captured on the Preserve.

The Vascular Flora Of The Niobrara Valley Preserve And Adjacent Areas In Nebraska, Steven P. Churchill, Craig C. Feeman, Gail E. Kantak

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The Niobrara Valley Preserve is a 219 km² area along the Niobrara River in north-central Nebraska. Five hundred eighty-one species of vascular plants, about one-third of the total known from Nebraska, are recorded from the Preserve. They are distributed among 332 genera in 105 families. The floristic richness of this area may be attributed to two major factors: 1) a unique surface and subsurface geology has produced hydrologic and pedologic conditions amenable to a variety of plant communities; 2) Pleistocene and post-Pleistocene climates were critical in determining the co-occurrence of diverse vegetation types in the Niobrara River Valley. Among …

Interpreting Modern And Paleo-Environments By Analysis Of Water-Stress In Xylem: Examples From Nebraska And Arkansas, James Landon

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Wood-anatomical responses to an environmental gradient were studied in trees of northwestern and southeastern Nebraska and northwestern Arkansas to determine between- and within-site variation and differential sensitivity of diverse anatomical patterns. These data were then used as a tool to try to reconstruct paleo-environments, using wood-fossil assemblages from the Crookston Bridge Member of the Valentine Formation. No significant within-site variation was found in living trees, but great differences in environmental sensitivity were detected among the anatomical types. Responses displayed by the fossils do not match those of my modern study areas.

The Giant Marmot Paenemarmota Sawrockensis (New Combination) In Hemphillian Deposits Of Northeastern Nebraska, M. R. Voorhies

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Lower dentitions essentially identical to the holotype of Marmota sawrockensis Hibbard, 1964, are described from the Santee and Devils Nest Airstrip local faunas (very late Hemphillian) in Knox County, Nebraska. These, along with newly-collected upper cheekteetb (previously unknown for tbis taxon), show that the species should be transferred to the genus Paenemarmota Hibbard and Schultz, 1948. P. sawrockensis appears to be structurally intermediate between ?Marmota nevadensis of the early Hemphillian and P. barbouri, a latest Hemphillian and Blancan species.

Systematics And Population Ecology Of Late Pleistocene Bighorn Sheep (Ovis Canadensis) Of Natural Trap Cave, Wyoming, Xiaoming Wang

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Large numbers of Late Pleistocene bighorn sheep (total counts of identifiable elements: 4,497) Ovis canadensis. are described from the Natural Trap Cave, northern Wyoming. The specimens consist of nearly-intact skulls and enough post-cranial materials to assemble several complete sheep skeletons. Most of the fossils yield radiocarbon dates from 12,000 to 21,000 BP, while the oldest are more than 110,000 years old as dated by the fission-track method on the volcanic ash. The specimens resemble modern bighorn sheep (Ovis canadensis) in having shallow lachrymal fossae and relatively wide rostra. in contrast to the Asian argali (Ovis ammon …

Review Of Sociology: A Brief But Critical Introduction, 2nd Edition, By Anthony Giddens, Michael R. Hill

Department of Sociology: Faculty Publications

As Giddens announces correctly in the preface, "This book differs from most other introductory texts in sociology in several ways" (p. vii). It concentrates on theory, "the core of theoretical concerns which sociology shares with all the social sciences" (p. vii). Giddens asserts, "I do not adopt the usual view that these issues are unimportant to those seeking to achieve an initial acquaintance with sociology. Neither do I accept the equally common idea that such matters are too complex to be grasped before the reader has a mastery of the more empirical content of the subject" (pp. vii-viii). On the …

Effects Of Gender, Ethnicity, And School Equity On Students' Leadership Behaviors In A Group Game, Helen A. Moore

Department of Sociology: Faculty Publications

Leadership skills and the perception of leadership by students and classroom teachers are examined in 10 desegregated elementary schools. The 10 schools were first divided into "high-equity" and "low-equity" schools based on the extent to which they met "integrative" educational criteria, such as multicultural curricula, multiethnic staff, minority parent involvement, and other factors. A random sample of 202 Hispanic and Anglo students participated in a cooperative group task in gender-segregated groups composed of 3 students from each ethnic group. Results indicate that trained observers found gender differences in nonverbal and verbal leadership behaviors among students across the schools, including higher …

Size Differences In Migrant Sandpiper Flocks: Ghosts In Ephemeral Guilds, Jan L. Eldridge, Douglas H. Johnson

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Scolopacid sandpipers were studied from 1980 until 1984 during spring migration in North Dakota. Common species foraging together in mixed-species flocks differed in bill length most often by 20 to 30 percent (ratios from 1.2:1 to 1.3:1). Observed flocks were compared to computer generated flocks drawn from three source pools of Arctic-nesting sandpipers. The source pools included 51 migrant species from a global pool, 33 migrant species from a Western Hemisphere pool, and 13 species that migrated though North Dakota. The observed flocks formed randomly from the available species that used the North Dakota migration corridor but the North Dakota …

Determinants Of Breeding Distribution Of Ducks, Douglas H. Johnson, James W. Grier

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

The settling of breeding habitat by migratory waterfowl is a topic of both theoretical and practical interest. We use the results of surveys conducted annually during 1955-81 in major breeding areas to examine the factors that affect the distributions of 10 common North American duck species. Three patterns of settling are described: homing, opportunistic, and flexible. Homing is generally more pronounced among species that use more stable (more predictable) wetlands, such as the redhead (Aythya americana), canvasback (A. valisineria), lesser scaup (A. affinis), mallard (Anas platyrhynchos), gadwall (Anas strepera), and …

Wolf Distribution And Road Density In Minnesota, L. David Mech, Steven H. Fritts, Glenn L. Radde, William J. Paul

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Distribution of the wolf (Canis lupus) in parts of Wisconsin (Thiel 1985) and Michigan and Ontario (Jensen et al. 1986) has been related to the density of roads passable by 2-wheel-drive vehicles. Wolves in those regions generally do not occur where road densities exceed 0.58 km/km², whereas similar areas nearby with fewer roads do contain wolves.

In a small segment of the wolf range in Minnesota, wolves did not have territories where roads exceeded a density of 0.73 km/km² (T. K. Fuller, Minnesota Department of Natural Resources, unpublished data). In another small area of Minnesota …

Review Of Buckskins, Bullets, And Business: A History Of Buffalo Bill's Wild West, Andrew Gulliford

Great Plains Quarterly (through 2013)

Of all the popular culture heroes of the American West, Buffalo Bill stands out as the quintessential frontiersman, hunter, Indian scout, cattle rancher, land speculator, and showman par excellence. The subject of countless dime novels, plays, melodramas, and no fewer than thirty five films, Colonel W. F. Cody was a living legend whose expertise in organizing and touring "Buffalo Bill's Wild West Show and Congress of Rough Riders of the World" made it one of the largest and longest running outdoor entertainments in history. For more than thirty years, between 1882 and 1913, the Wild West Show toured America and …

Genetic Differentiation And Biochemical Polymorphism Among Trichomonads, Steven A. Nadler, B. M. Honigberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Isoenzyme electrophoresis was used to study levels of genetic differentiation among strains and clones of Trichomonasg allinae, Trichomonasv aginalis, Tritrichomonafso etus, Tetratrichomonags allinarum, and Pentatrichomonas hominis. Strain variation was found within T. gallinae, T. vaginalis, and T. foetus, however, levels of enzyme polymorphism were greater in T. gallinae than in T. vaginalis or T. foetus. Isoenzyme genotypes were not a stable property of T. gallinae clones cultivated in vitro. Retrospective studies of T. gallinae SG and JB6 clones revealed that mutation occurred during in vitro cultivation. Heterozygotes of hexokinase- 1 and phosphoglucomutase displayed 2 …

Synlophe Of Nematodirus Neotoma (Trichostrongyloidea), Eric P. Hoberg, Lora G. Rickard, Gary L. Zimmerman

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The synlophe of Nematodirus neotoma from Neotoma spp. is characterized. The cervical synlophe is composed of 30-32 and 36-42 ridges in males and females, respectively. Of these, 14 and 20-22 ridges are continuous in the cervical zone and extend to the base of the cephalic expansion. Six pairs of lateral ridges are discontinuous but extend greater than one-third the length of the cervical region. In both males and females, the number of ridges increases posteriad, terminating near the bursa in the male, and extending the entire length of the body in the female. The synonymy of N. neotoma and N. …

North American Owls: Biology And Natural History, Paul A. Johnsgard

Paul Johnsgard Collection

Foreword by Robert W. Nero 9
Preface 11

Comparative Biology of Owls 15
Evolution and Classification of North American Owls 17
Comparative Ecology and Distribution 25
Comparative Morphology and Physiology 37
Comparative Behavior 55
Comparative Reproductive Biology 71
Owls in Myth and Legend 85

Natural Histories of North American Owls

Family Tytonidae 95
Common Barn-owl

Family Strigidae 105
Flammulated Owl
Eastern Screech-owl
Western Screech-owl
Whiskered Screech-owl
Great Horned Owl
Snowy Owl
Northern Hawk-owl
Northern Pygmy-owl
Ferruginous Pygmy-owl
Elf Owl
Burrowing Owl
Spotted Owl
Barred Owl
Great Gray Owl
Long-eared Owl
Short-eared Owl
Boreal Owl
Northern Saw-whet Owl

Key to Genera …