Digital Commons Network^™

Diet Influences Mate Choice Selectivity In Adult Female Wolf Spiders, Eileen Hebets, Jennifer Wesson, Paul S. Shamble

Eileen Hebets Publications

Most studies of female choice have assumed that mating preferences are shared within a population or species. However, variation both within and among females exists in natural populations, and foraging history is among the many ways in which females may vary. Here, we used diet manipulations in an effort to understand how foraging history influences female mate choice. Immature Schizocosa wolf spiders collected from a mixed population of brush-legged and non-ornamented males were reared in the laboratory on two diets that varied in both quality and quantity (low/high diet). For low- and high-diet individuals, we recorded data on rates of …

A Spatial Analysis Of Anthropogenically Derived And Naturally Occurring Environmental Controls On Corn-Based Ethanol Production In Nebraska, Nathan Charles Healey

School of Natural Resources: Dissertations, Theses, and Student Research

Transportation fuels are an integral part of political, economic, social, and environmental arenas. Traditionally, fossil fuels have been utilized most heavily due to their abundance and economic value. Currently, social and political concerns about harmful emissions (greenhouse gases) from fossil fuel combustion have enhanced interest in alternative fuels that do not have the same environmental consequence. Numerous alternative fuels are produced globally including methanol, biodiesel, hydrogen cells, and ethanol (ethyl alcohol). In America, ethanol is produced from com due to the existence of the "Com Belt" and abundant corn production. Understanding the capacity for America to sustain expansion of alternative …

Extended Visions, July/August 2008

Extended Visions Newsletter (ARDC)

Contents:
ARDC FEATURE UNIT - Agrometeorology Laboratory
About the People
Automated Weather Data Network
Carbon Sequestration Program
History of the Agrometeorology Laboratory
Precipitation Chemistry Studies
Ultraviolet-B (UVB) Radiation Monitoring
Area Youth Participate in Extensive Babysitting Training
Asia Sabatka Serves as Extension Intern
Calendar of Events
Dairy Education Day and Open House - August 4
Duncan Recognized for Service to ARDC
Field Days Offered At Various Locations Throughout the State
Governor Heineman and European Ag Leader Visit ARDC
Midsummer and Late Season Crop Clinics Offered
Saunders County Fair 4-H Program

Graduate Connections- August 2008

Graduate Connections: A Newsletter for UNL Graduate Students

In This Issue:

Click on links to navigate the newsletter

Navigating Graduate School......1

Success in Graduate School

18th Annual Campuswide TA Workshops

New Student Welcome

Barbara Lovitts Seminars

Stay Connected

38 Strategies for Completing Your Dissertation

Good Practices in Graduate

Education....................................4

Academic Integrity: A Letter to My Students

Essential Connections..................7

A Timeless and Solitary Page

Teaching Tip .................................8

Ten Things to Do the First Day of Class

Professional Development...........9

Think “Next Stage”

Interactions.................................10

Graduate Student Association News

Funding Opportunities...............11

Resources for Researchers........12

NURAMP Workshops

Responsible Conduct of Research

Human and Animal Subjects

Announcements..........................13

Software Workshops

Online Graduate Bulletin

Call for …

Outstanding In Their Field: The Phenotype Of The 21st Century Plant Breeder, P. Stephen Baenziger, Robert A. Graybosch, Ismail M. Dweikat, Stephen N. Wegulo, Gary L. Hein, Kent M. Eskridge

Department of Entomology: Faculty Publications

Plant breeding is a highly interdisciplinary science that requires the skills and teamwork of many scientists to be successful. In the 21st century, plant breeding will reap the benefits of the rapid advances in genomics research and understanding, as well as, advances in information and mechanical technology. The skill and success of plant breeders will be determined by their ability to use their resources efficiently, retaining those proven methodologies and augmenting them with novel approaches to meet their breeding objectives. Once the objective is determined, the plant breeder must: 1. identify and incorporate the needed genetic variability, 2. inbreed and …

Statistical Comparison Of Residential Soil Concentrations Of Pcdds, Pcdfs, And Pcbs From Two Communities In Michigan, Avery Demond, P. Adriaens, T. Towey, S.-C. Chang, B. Hong, Q. Chen, C.-W. Chang, A. J. Franzblau, D. Garabrant, B. Gillespie, E. Hedgeman, K. Knutson, C. Y. Lee, J. Lepkowski, Kristen M. Olson, B. Ward, L. Zwica, W. Luksemburg, M Maier

Department of Sociology: Faculty Publications

The University of Michigan dioxin exposure study was undertaken to address concerns that the industrial discharge of dioxin-like compounds in the Midland, MI area had resulted in contamination of soils in the Tittabawassee River floodplain and downwind of the incinerator. The study was designed in a rigorously statistical manner comprising soil measurements of 29 polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) from 766 residential properties, selected probabilistically, in the Midland area and in Jackson and Calhoun Counties (Michigan) as a background comparison. A statistical comparison determined that the geometric mean toxic equivalent (TEQ) levels in samples from …

Pasteurellosis Transmission Risks Between Domestic And Wild Sheep, Michael W. Miller, Donald P. Knowles, Marie S. Bulgin, Billy R. Clay, Walter E. Cook, Subramaniam Srikumaran, A. David Scarfe, Dale Layfield

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

Disease has contributed significantly to the decline of bighorn sheep (Ovis Canadensis) populations throughout much of western North America, decreasing many native herds to less than 10% of their historical size and imperiling some populations and subspecies (Valdez and Krausman 1999). According to historical accounts (e.g., Grinnell 1928; Honess and Frost 1942; Shillinger 1937; Warren 1910), epidemics in some locations coincided with the advent of domestic livestock grazing in bighorn ranges, suggesting that novel pathogens may have been introduced into some bighorn populations beginning in the 1800s.
Native North American wild sheep species—bighorn sheep and thinhorn (Dall’s and …

The Food, Conservation, And Energy Act Of 2008 Summary And Possible Consequences, Wesley L. Harris, Bradley Lubben, James L. Novak, Larry D. Sanders

Department of Agricultural Economics: Presentations, Working Papers, and Gray Literature

The primary purpose of this article is to provide a summary and briefly comment on key provisions of the Food, Conservation and Energy Act of 2008 (PL 110-246) and discuss possible consequences of the selected provisions. As passed by the House and Senate, the act contains 15 titles (the pdf version covering 683 pages). While most provisions will be at least briefly discussed, more attention will be devoted to the production-related provisions, especially substantive changes from the 2002 act. The general title of any new farm bill is telling in both what is significant in the bill and in what …

Overview Of The 2008 Farm Bill, Bradley Lubben

Department of Agricultural Economics: Presentations, Working Papers, and Gray Literature

The following presentations summarize various titles and sections of the 2008 Farm Bill and provide program details and mechanics of the new legislation as well as potential impacts of the new programs. The presentations were delivered at the 2008 Farm Bill Education Conference and serve as both an outline of the new programs as well as a working template for further education and analysis. The conference was organized by the University of Nebraska-Lincoln along with Auburn University, The University of Georgia, and Oklahoma State University. The conference was sponsored through grants from the Farm Foundation and the North Central Risk …

Intsormil/Centa Food Technologist Awarded Prize At Pccmca, Intsormil

INTSORMIL Impacts and Bulletins

INTSORMIL/CENTA El Salvador scientist, Vilma Calderon (right), won third place for her paper presented at the 53rd annual meeting of the PCCMCA (El Programa Cooperativo Centroamericano para el Mejoramiento de Cultivos y Animales) held in San José, Costa Rica April 14-18, 2008. Vilma’s paper entitled “Nutritional Quality of Whole Sorghum in Different Food Applications” demonstrated how people from different cultures utilize sorghum as a human food and how sorghum is a nutritional alternative for inclusion in the diet of people in developing countries. With INTSORMIL support Vilma has been conducting research on the utilization of sorghum for human consumption at …

The Leading Object: July 2008

Leading Object

Content:
Perspectives: John C. Owens
IANR partnership with Chinese university to bring students to Lincoln
Ratcliffe’s beetle discovery honored
Knobel credits education with enhancing his career
Lou receives honorary professorship from Chinese university
Biochemistry professor receives Maxcy Professorship
Several faculty receive national recognitions
Corn, wheat boards partner with IANR to benefit agriculture

Scwds Briefs: Volume 24, Number 2 (July 2008), Gary L. Doster , Editor, Scwds Briefs, Michael J. Yabsley

Southeastern Cooperative Wildlife Disease Study: Publications

Table of Contents:

Brucellosis in MT and WY

Lead Fragments in Donated Venison

The Threat of Plague

Recent Cases of Plague in the U.S.

Raccoon Roundworm – Public Health Update 2008

Avian Pox in a Nestling Bald Eagle

A Note to Our Readers

Recent SCWDS Publications Available

Corn Distillers Dried Grains (Ddgs) For Growing-Finishing Swine, Phillip S. Miller

Department of Animal Science: Faculty Publications

Two-hundred and forty pigs growing-finishing pigs were used to evaluate the feeding value of distillers dried grains with solubles (DDGS). Treatments consisted of 0, 5, 10 and 15% dietary DDGS inclusion. Treatments did not affect average daily gain (ADG), average daily feed intake (ADFI) or gain:feed (G:F) during the grower 1 period (P > 0.05). During the grower 2 period ADG and ADFI linearly decreased as DDGS increased (P < 0.05). No differences among treatments were detected throughout the feeding phase finisher 1 for ADG, ADFI, and G:F (P > 0.05). During the finisher 2 feeding phase, there was a linear reduction in ADG and ADFI in response to dietary DDGS inclusion (P = 0.01). Overall, linear reductions …

The Potential For Crop-To-Wild Gene Flow In Sorghum In Ethiopia And Niger: A Geographic Survey, Tesfaye Tesso, Issoufou Kapran, Cecile Grenier, Allison Snow, Patricia Sweeney, Jeffrey F. Pedersen, David B. Marx, Gurling Bothma, Gebisa Ejeta

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

Information about the potential for crop–wild hybridization is needed to understand how crop genes, including transgenes, affect the population genetics and ecology of sexually compatible relatives. Transgenic sorghum is under development for use by traditional farmers in Africa, the center of origin for sorghum [Sorghum bicolor (L.) Moench], but systematic surveys of the current extent of contact with wild and weedy relatives are lacking. We studied wild and weedy sorghums that are interfertile with the crop and constitute a crop–wild–weed complex. The survey was conducted in 2005 in areas of traditional sorghum cultivation in three regions of Ethiopia and …

American Society Of Parasitologists Newsletter, V. 30, No. 2, Summer 2008, Scott Lyell Gardner

American Society of Parasitologists: Newsletter

An issue of the American Society of Parasitologists' quarterly newsletter, also called the Journal of Parasitology Newsletter.

Nebline, July 2008

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Homemade Skillet Meals: Easy, Healthy & Low-Cost
Create Your Own Skillet Meal
Colorful Annual Vines
Watch out for Poison Ivy
Summer Pruning of Apple Trees
Keep the Vegetables Coming with a Fall Garden
Cost of Pumping Water for Domestic and Acreage Needs
Managing Financial Risk During Boom Periods
Plan the Timing of Grass Hay Harvest
Midges: Non-biting Gnats
Midge Control Program at Capitol Beach
Bats In and Around Structures
Bats and Disease
Supermarket Savings: 16 Tips that Can Total Big Bucks
Family & Community Education (FCE) Clubs: Presidents’ Notes—Bonnie’s Bits
FCE News & Events
Household Hints: Swimsuit Care
Strengthening Family …

Cool-Season Legumes For Southern Pastures, John A. Guretzky, Twain Butler

Department of Agronomy and Horticulture: Faculty Publications

Legumes can improve the production and nutritional value of pastures while reducing nitrogen fertilization requirements. On July 19, 2008, the Noble Foundation will host the "Texoma Pasture Conference" to explain the pros and cons of using legumes in pastures. The Agricultural Division has invited experts from Alabama, Georgia, Kentucky, Oklahoma and Texas to deliver this exciting program. We encourage you to attend this timely event. In the meantime, we will tell you about ongoing research in the Agricultural and Forage Improvement divisions evaluating legumes for pasture.

A goal of our research is to identify best practices for establishing and managing …

Working Trees: Silvopasture, An Agroforestry Practice

Working Trees (USDA-NAC)

Silvopasture integrates trees, livestock, and forage into a single system on one site.

These components diversify income sources. Annual income from grazing and long-term profits from trees respond to different market pressures and reduce risk when combined in the same operation.

Shade from the trees lengthens the forage growing season and improves forage quality. It also increases the comfort level for livestock which reduces stress.

The structure and plant diversity of silvopastures is attractive to many wildlife species including wild turkey, quail, deer, and many songbirds.

Silvopastures are inherently sustainable systems. They increase biological diversity, protect water quality, reduce soil …

Initial Interaction Of Apoa-I With Abca1 Impacts In Vivo Metabolic Fate Of Nascent Hdl, Anny Mulya, Ji-Young Lee, Abraham K. Gebre, Elena Y. Boudyguina, Soonkyu Chung, Thomas L. Smith, Perry L. Colvin, Xian-Cheng Jiang, John S. Parks

Department of Nutrition and Health Sciences: Faculty Publications

We investigated the in vivo metabolic fate of preb HDL particles in human apolipoprotein A-I transgenic (hA-I Tg) mice. Pre-b HDL tracers were assembled by incubation of [125I]tyramine cellobiose-labeled apolipoprotein A-I (apoA-I) with HEK293 cells expressing ABCA1. Radiolabeled pre-b HDLs of increasing size (pre-b1, -2, -3, and -4 HDLs) were isolated by fast-protein liquid chromatography and injected into hA-I Tg-recipient mice, after which plasma decay, in vivo remodeling, and tissue uptake were monitored. Pre-b2, -3, and -4 had similar plasma die-away rates, whereas pre-b1 HDL was removed 7-fold more rapidly. Radiolabel recovered in liver and kidney 24 h after tracer …

Seasonal And Annual Variation In Body Condition Of Western Gray Whales Off Northeastern Sakhalin Island, Russia, Amanda L. Bradford, David W. Weller, Yulia V. Ivashchenko, Alexander M. Burdin, Robert L. Brownell Jr.

United States Department of Commerce: Staff Publications

The western gray whale population (Eschrichtius robustus) is critically endangered and its potential for recovery is uncertain. Along with other natural and anthropogenic threats, western gray whales are susceptible to nutritional stress, known from regular observations of individual whales in compromised body condition. Thus, the ability to visually quantify the relative body condition of free-ranging western gray whales and evaluate how this condition varies seasonally and annually is needed. A photo-identification study of western gray whales on their feeding ground off the northeastern coast of Sakhalin Island, Russia, produced a large dataset of digital, film, and video images …

Updating The Farm Bill Safety Net In An Expanding Sea Of Risk, Wes Harris, Bradley Lubben, James Novak, Larry Sanders

Department of Agricultural Economics: Faculty Publications

Several months past due, the Food, Conservation and Energy Act (FCEA) of 2008 (P.L. 110-246) is now law. Reform, budget, and national and international politics were central issues fueling a debate that resulted in this new bill. Whether this new Farm Bill will ultimately succeed in providing an adequate farm and food safety net and whether it is a “good” or “bad” bill depends on one’s perspective. As to cost, the Congressional Budget Office (CBO) scores the bill at $307 billion for a 5–year period (2008–2012), with 68% going to nutrition, 11% to commodity programs, 8% of estimated expenditures to …

Ard News June 2008

Agricultural Research Division: News and Annual Reports

CONTENTS:
Comments from Dean Gary Cunningham
William G. Whitmore Student Travel Endowment
ARD Advisory Council Election Results
Burlington Northern Endowment
National Science Foundation
David H. and Annie E. Larrick Fund July-December 2008
Undergraduate Honors Research Program
New or Revised Projects March and April 2008
Proposals Submitted for Federal Grants March and April 2008
Grants and Contracts Received for March and April 2008

Candida Albicans Tup1 Is Involved In Farnesol-Mediated Inhibition Of Filamentous-Growth Induction, Bessie W. Kebaara, Melanie L. Langford, Dhammika H. M. L. P. Navarathna, Raluca Dumitru, Kenneth W. Nickerson, Audrey L. Atkin

Kenneth Nickerson Papers

Candida albicans is a dimorphic fungus that can interconvert between yeast and filamentous forms. Its ability to regulate morphogenesis is strongly correlated with virulence. Tup1, a transcriptional repressor, and the signaling molecule farnesol are both capable of negatively regulating the yeast to filamentous conversion. Based on this overlap in function, we tested the hypothesis that the cellular response to farnesol involves, in part, the activation of Tup1. Tup1 functions with the DNA binding proteins Nrg1 and Rfg1 as a transcription regulator to repress the expression of hypha-specific genes. The tup1/tup1 and nrg1/nrg1 mutants, but not the rfg1/rfg1 mutant, failed to …

Extended Visions, May/June 2008

Extended Visions Newsletter (ARDC)

Contents:
Comments from the Dean
ARDC FEATURE UNIT - Swine Research
About the People
Behind the Research
Swine Report Provides Insight on Research
Calendar of Events
Babysitting Basics
Co-Product Storage and Utilization Conference
4-H Summer Workshops Open to ALL Youth
Help for Your Lawn and Garden
In-Field Clinics for Agribusiness Representatives and Producers
MEAD MAGNET Update - FFA Competition Participants Recognized
2008 Master Beekeeping Workshop
Website URL Correction

Gregarines On A Diet: The Effects Of Host Starvation On Gregarina Confusa Janovy Et Al., 2007 (Apicomplexa: Eugregarinida) In Tribolium Destructor Uyttenboogaart, 1933 (Coleoptera: Tenebrionidae) Larvae, Jodi Schreurs, John J. Janovy Jr.

John J. Janovy, Jr. Publications

This study was designed to explore the nutritional relationship between Gregarina confusa (Apicomplexa: Eugregarinida) parasites and its coleopteran host, Tribolium destructor, by measuring the cytoplasmic density of gregarines in continuously fed larvae, starved larvae, and larvae refed after starvation. Cultures were maintained in a standard media (whole wheat flour:commercial wheat germ:yeast [30:10:1]). Larvae from control and experimental groups were dissected daily for three days then allowed to feed or starve for an additional three days. On day 6, the remaining experimental larvae were divided and placed into two groups; one group remained starved while larvae from the second group …

Supracutaneous Vibrotactile Perception Threshold At Various Non-Glabrous Body Loci, Miriam Bikah, M. Susan Hallbeck, John H. Flowers

Department of Psychology: Faculty Publications

Researchers at the University of Nebraska–Lincoln are currently designing a wearable/portable neutron detector. As an alerting mechanism, the device will transmit vibration to the wearer’s skin in the presence of hazardous levels of neutron radiation. The present study was designed to help in the ergonomically correct body placement of the neutron detection device while providing numerical values for vibratory thresholds at the surface of various non-glabrous body loci. The aim of the study was to investigate the underlying effects of locus stimulated, amount of subcutaneous fat around a specific body site and gender on low frequency vibration thresholds. Thirty-six participants, …

Gamma Sigma Delta Newsletter - Nebraska Chapter, Issue #35, May 2008

Gamma Sigma Delta, Nebraska Chapter: Newsletters

President’s Message: Team Commitment
The Gamma Sigma Delta Fall 2008 Seminar, October 1: Sustainable Agriculture and Using Local Foods by Dr. Catherine H. Strohbehn, HRIM Extension Specialist, Iowa State University.
GAMMA SIGMA DELTA 2008 COMMITTEES
Award of Merit for Distinguished Achievement in Agriculture: Don C. Adams, Director West Central Research and Extension Center, North Platte
Excellence in Teaching Award: Darrell R. Mark, Assistant Professor Agricultural Economics
Excellence in Extension Award: • James W. Goeke, Professor, Survey Division School of Natural Resources, North Platte
Excellence in Research Award: Janos Zempleni, Associate Professor Nutrition and Health Sciences
2007 Gamma Sigma Delta New …

11 Blue Grouse, Paul A. Johnsgard

Grouse and Quails of North America by Paul A. Johnsgard

Dendragapus obscurus (Say) 1823
Other vernacular names: dusky grouse, fool hen, gray grouse, hooter, mountain grouse, pine grouse, pine hen, Richardson grouse, sooty grouse.
Range: From southeastern Alaska, southern Yukon, southwestern Mackenzie, and western Alberta southward along the offshore islands to Vancouver and along the coast to northern California, and in the mountains to southern California, northern and eastern Arizona, and west central New Mexico

14 Rock Ptarmigan, Paul A. Johnsgard

Grouse and Quails of North America by Paul A. Johnsgard

Lagopus mutus (Montin) 1776
Other vernacular names: Arctic grouse, barren-ground bird, Chamberlain ptarmigan, Dixon ptarmigan, Nelson ptarmigan, Reinhardt ptarmigan, rocker (in Newfoundland), snow grouse, Townsend ptarmigan, white grouse.
Range: Circumpolar. In North America from northern Alaska, northwestern Mackenzie, Melville Island, northern Ellesmere Island, and northern Greenland south to the Aleutian Islands, Kodiak Island, southwestern and central British Columbia, southern Mackenzie, Keewatin, northern Quebec, southern Labrador, and Newfoundland (A. 0 . U.)

16 Ruffed Grouse, Paul A. Johnsgard

Grouse and Quails of North America by Paul A. Johnsgard

Bonasa umbellus ( Linnaeus) 1776
Other vernacular names: birch partridge, drummer, drumming grouse, long-tailed grouse, mountain pheasant, partridge, pine hen, pheasant, tippet, white-flesher, willow grouse, wood grouse, woods pheasant.
Range: Resident in the forested areas from central Alaska, central Yukon, southern Mackenzie, central Saskatchewan, central Manitoba, northern Ontario, southern Quebec, southern Labrador, New Brunswick, and Nova Scotia south to northern California, northeastern Oregon, central Idaho, central Utah, western Wyoming, western South Dakota, northern North Dakota, Minnesota, central Arkansas, Tennessee, northern Georgia, western South Carolina, western North Carolina, northeastern Virginia, and western Maryland. Recently introduced in Nevada and Newfoundland