Life Sciences Commons^™

Flight-Muscle Polymorphism In The Cricket Gryllus Firmus: Muscle Characteristics And Their Influence On The Evolution Of Flightlessness, Anthony J. Zera, Jeffry Sall, Kimberly Grudzinski

Anthony Zera Publications

Flight muscles of the cricket Gryllus firmus are polymorphic, existing as pink or white phenotypes. White muscles are smaller in size, have reduced number and size of muscle fibers, and have reduced in vitro enzyme activities and respiration rates relative to pink muscles of newly molted, fully winged adults. G. firmus is also polymorphic for wing length. All newly molted long-winged adults exhibited the pink-muscle phenotype, while most newly molted short-winged adults exhibited the white-muscle phenotype, which resulted from arrested muscle growth. As long-winged adults aged, fully grown pink muscle was transformed into white muscle via histolysis. The substantially higher …

Liquid-Liquid Immiscibility In Lipid Monolayers, John P. Hagen, Harden M. Mcconnell

Chemistry and Biochemistry

Some binary lipid mixtures form coexisting liquid phases when spread at the air/water interface. This work describes the pressure–composition phase diagrams of binary mixtures of four unsaturated phosphatidylcholines with dihydrocholesterol. These four binary mixtures have critical compositions of approximately fifty mole percent, and average critical exponents of 0.25±0.07. The data can also be approximated by a regular solution thermodynamic model, yielding parameters for the non-ideality of these mixtures.

Identification Of The Wheat Curl Mite As The Vector Of The High Plains Virus Of Corn And Wheat, Dallas L. Seifers, Tom L. Harvey, T. J. Martin, Stanley G. Jensen

Department of Plant Pathology: Faculty Publications

Wheat with virus-like symptoms (extracts containing a 33-kDa protein in sodium dodecyl sulfate- polyacrylamide gel electrophoresis, negative in enzyme-linked immunosorbent assay to wheat streak mosaic virus, and not infectious in a backassay to other wheat) reacted positively to antiserum made against a protein purified from symptomatic corn infected with the High Plains virus (HPV), indicating a serological relationship between the corn and wheat pathogens. The wheat curl mite (WCM, Aceria tosichella Keifer) was identified as the vector of the virus and caused persistent infection of barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.) in greenhouse experiments. The …

Pb1598-Managing Intake Of Lactating Dairy Cows, The University Of Tennessee Agricultural Extension Service

Animals/Livestock

Lactating dairy cows must consume large quantities of dry matter (DM) to provide the nutrients needed to maintain high levels of milk production. The consequences of low dry matter intake (DMI) are lower peak milk yields, lower total milk production, excessive loss of body weight and poor reproductive performance. Research has shown a two pound increase in milk production for each pound increase in DMI. As milk production continues to increase, management of DMI becomes more critical.

Tip Selection For Precision Application Of Herbicides, University Of Tennessee Agricultural Experiment Station, Alvin R. Womac, Jill C. Goodwin, William E. Hart

Bulletins

No abstract provided.

Herbicide Evaluation In Arkansas Rice, 1996, Eric Webster, Ron Talbert, Ford Baldwin, David Gealy, Tomilea Dillon, Jason Norsworthy, Lance Schmidt, Dwayne Beaty

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

Proposed Voluntary Fishery Adjustment Scheme. South Coast Purse Seine Managed Fishery., Committee Of Management

Fisheries management papers

On 29 May 1997 the Minister for Fisheries established a Committee of Management in respect of the South Coast Purse Seine Managed Fishery under the Fisheries Adjustment Schemes Act 1987 (the Act). The initial function of the Committee of Management (the Committee) is to consider, in respect of the Fishery, the desirablity of the establishment of a Voluntary Fisheries Adjustment Scheme. This document constitutes the report of the desirability of a Scheme.

Lupin Logic Number 87

Lupin Logic

Contents

Anthracnose update

Lupini bean

Lupin Logic proposals

Weapon Size Versus Body Size As A Predictor Of Winning In Fights Between Shore Crabs, Carcinus Maenas (L.), Lynne U. Sneddon, Felicity A. Huntingford, Alan C. Taylor

Veterinary Science and Medicine Collection

Relative body size (carapace width) and weapon size (chela length) were used as indicators of resource holding potential (RHP) in the agonistic behaviour of male shore crabs, Carcinus maenas (L.). Weapon size was found to be a more reliable predictor of the outcome of pairwise fights than body size. Crabs with longer chelae than their opponents were more likely to win fights than crabs with relatively larger bodies. Body size had less influence on the outcome of fights. Relative body and weapon size did not influence initiation of contests but did affect the likelihood of winning; however, this was significant …

Vocal Response Of Piglets To Weaning: Effect Of Piglet Age, Daniel M. Weary, David Fraser

Ontogeny Collection

Piglets vocalize a great deal during the first few days after weaning. The aim of this experiment was to determine if the calls given by piglets vary in response to one factor thought to influence post-weaning adaptation: weaning age. In 22 litters, each containing a minimum of 9 piglets, 3 piglets were weaned under identical conditions at 3, 4 and 5 weeks of age. Vocalizations and weight gain were monitored for the week after weaning. The number of calls produced by piglets of all three ages declined from an average of 8.2 calls/min per piglet on the day of weaning …

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director's comments: Blostress: South Dakota's reality, Ag Experiment Station's focus: The new growth chamber room in the Northern Plains Biostress Laboratory is only the latest addition to our arsenal in South Dakota's continuing battle with biostress. [p] 1
High points of 50 years: Antelope Range Station continues its starring role in beef research [p] 2
Local teams spread the word: Team approach to teaching no-till is 'win-win' when farmers join SDSU and agencies to transfer the technology [p] 4
Native plants again find place in the sun: Modern versions of prairie legumes will be marketed for roadside and gamebird plantings …

Energetics Of Swimming By The Platypus Ornithorhynchus Anatinus: Metabolic Effort Associated With Rowing, Frank E. Fish, R V. Baudinette, P B. Frappell, M P. Sarre

Frank E. Fish

The metabolism of swimming in the platypus Ornithorhynchus anatinus Shaw was studied by measurement of oxygen consumption in a recirculating water flume. Platypuses swam against a constant water current of 0.45-1.0ms(-1). Animals used a rowing stroke and alternated bouts of surface and submerged swimming. Metabolic rate remained constant over the range of swimming speeds tested. The cost of transport decreased with increasing velocity to a minimum of 0.51 at 1.0ms(-1) Metabolic rate and cost of transport for the platypus were lower than values for semiaquatic mammals that swim at the water surface using a paddling mode. However, relative to transport …

1997 Scholars And Artists Bibliography, Michael Schwartz Library, Cleveland State University, Friends Of The Michael Schwartz Library

Scholars and Artists Bibliographies

This bibliography was created for the annual Friends of the Michael Schwartz Library Scholars and Artists Reception, recognizing scholarly and creative achievements of Cleveland State University faculty, staff and emeriti

The Interaction Between Cytoplasmic Dynein And Dynactin Is Required For Fast Axonal Transport, Clare M. Waterman-Storer, Sher B. Karki, Sergei A. Kunetsov, Joel S. Tabb, Dieter G. Weiss, George M. Langford, Erika L.F. Holzbaur

Biology - All Scholarship

Fast axonal transport is characterized by the bidirectional, microtubule-based movement of membranous organelles. Cytoplasmic dynein is necessary but not sufficient for retrograde transport directed from the synapse to the cell body. Dynactin is a heteromultimeric protein complex, enriched in neurons, that binds to both microtubules and cytoplasmic dynein. To determine whether dynactin is required for retrograde axonal transport, we examined the effects of anti-dynactin antibodies on organelle transport in extruded axoplasm. Treatment of axoplasm with antibodies to the p150(Glued) subunit of dynactin resulted in a significant decrease in the velocity of microtubule-based organelle transport, with many organelles bound along microtubules. …

Center For Grassland Studies Newsletter, Fall 1997, Volume 3, No. 4

Center for Grassland Studies: Newsletters

Contents:

The Nebraska Gap Analysis Project: Geographic Information for Land Resource Managers by Marlen Eve and James Merchant, Conservation and Survey Division, University of Nebraska-Lincoln

1998 Nebraska Range Shortcourse by Lowell Moser, Department of Agronomy, University of Nebraska-Lincoln

The Konza Prairie: Our Tallgrass Neighbors by Rob Peters, formerly with The Land Institute, Salina, Kansas

Festival of Color Draws 9,000 This Year

Site-Dependent Regulation Of Population Size: A New Synthesis, Nicholas L. Rodenhouse, Thomas W. Sherry, Richard T. Holmes

Dartmouth Scholarship

The nature and extent of population regulation remains a principal unanswered question for many types of organisms, despite extensive research. In this paper, we provide a new synthesis of theoretical and empirical evidence that elucidates and extends a mechanism of population regulation for species whose individuals preemptively use sites that differ in suitability. The sites may be territories, refuges from predation, oviposition sites, etc. The mechanism, which we call site dependence, is not an alternative to density dependence; rather, site dependence is one of several mechanisms that potentially generate the negative feedback required for regulation. Site dependence has two major …

The Interaction Between Cytoplasmic Dynein And Dynactin Is Required For Fast Axonal Transport, Clare M. Waterman-Storer, Sher B. Karki, Sergei A. Kuznetsov, Joel S. Tabb, Dieter G. Weiss, George M. Langford, Erika L. F. Holzbaur

Dartmouth Scholarship

Fast axonal transport is characterized by the bidirectional, microtubule-based movement of membranous organelles. Cytoplasmic dynein is necessary but not sufficient for retrograde transport directed from the synapse to the cell body. Dynactin is a heteromultimeric protein complex, enriched in neurons, that binds to both microtubules and cytoplasmic dynein. To determine whether dynactin is required for retrograde axonal transport, we examined the effects of anti-dynactin antibodies on organelle transport in extruded axoplasm. Treatment of axoplasm with antibodies to the p150(Glued) subunit of dynactin resulted in a significant decrease in the velocity of microtubule-based organelle transport, with many organelles bound along microtubules. …

Santa Clara Magazine, Volume 39 Number 3, Autumn 1997, Santa Clara University

Santa Clara Magazine

6 -THE ART OF AN LNTEGRATED EDUCATION How the University connects learning and living, knowing and acting. By Paul Locatelli, S.J., '60

10 - DOUBLE OR NOTHING The University's resident experts discuss the pros and cons of cloning. By Robin K Sterns, Ph.D. Illustrations by Dug Waggoner

17 - SCU: BLUEPRINT FOR THE FUTURE The face of the campus is changing. In the near future six new structures will rise at SCU. By Susan Vogel

23 - SHEDDING LIGHT ON THE HEART OF DARKNESS Two photographers illuminate a shameful period in American history. By Christiaan T. Lievestro, Ph.D.

Consumption Of Atmospheric Isoprene In Soil, Cory C. Cleveland, Joseph B. Yavitt

Ecosystem and Conservation Sciences Faculty Publications

Natural vegetation annually emits 503 Tg yr⁻¹ of isoprene (2-methyl-1,3 butadiene) to the global atmosphere where it reacts very rapidly with hydroxyl radicals and strongly regulates atmospheric chemistry. Current models of the compound's chemical behavior assume the atmosphere is the only significant sink; however, there is evidence that soil may consume isoprene. Here we show through field and laboratory studies that soil exposed to isoprene at low mixing ratios removed isoprene to concentrations below those commonly observed in forest canopies, and that the removal of isoprene was biologically mediated. On the basis of laboratory studies with soil from several …

Use Of Rubidium To Label Lysiphlebus Testaceipes (Hymenoptera: Braconidae), A Parasitoid Of Greenbugs (Homoptera: Aphididae), For Dispersal Studies, Odair A. Fernandes, Robert J. Wright, Karl H. Baumgarten, Z. B. Mayo

Department of Entomology: Faculty Publications

A reliable method of labeling is needed to study dispersal of the braconid parasitoid, Lysiphlebus testaceipes (Cresson), an important biological control of greenbugs, Schizaphis graminum (Rondani), on grain sorghum, Sorghum bicolor (L.) Moench. The feasibility of using aqueous solutions of rubidium chloride (RbCl) applied as a foliar spray or soil drench to label greenbugs and L. testaceipes developing within greenbugs was studied. Laboratory and field studies were conducted to identify the minimal concentration of RbCl to assure labeling of greenbugs and wasps, persistence of Rb throughout the wasp's life span, mobility of Rb to unsprayed sorghum leaves, and feasibility of …

Toxicity Of Seven Monoterpenoids To Tracheal Mites (Acari: Tarsonemidae) And Their Honey Bee (Hymenoptera: Apidae) Hosts When Applied As Fumigants, Marion D. Ellis, Frederick P. Baxendale

Department of Entomology: Faculty Publications

Laboratory bioassays were conducted to characterize the acute toxicity of 7 monoterpenoids to tracheal mites, Acarapis woodi (Rennie), and their honey bee, Apis mellifera L., hosts. Citral, thymol, carvacrol, α-terpineol, pulegone, d-limonene, and menthol were applied as fumigants to mite-infested honey bees. Thymol and menthol were the most toxic compounds to honey bees, and α-terpineol was the least toxic. Menthol, citral, thymol, and carvacrol were more toxic to tracheal mites than to honey bees. Pulegone, d-limonene, and α-terpineol were more toxic to honey bees than to tracheal mites. Menthol was 18.9 times more toxic to tracheal mites than to …

Competition And Facilitation: A Synthetic Approach To Interactions In Plant Communities, Ragan M. Callaway, Lawrence R. Walker

Biological Sciences Faculty Publications

Interactions among organisms take place within a complex milieu of abiotic and biotic processes, but we generally study them as solitary phenomena. Complex combinations of negative and positive interactions have been identified in a number of plant communities. The importance of these two processes in structuring plant communities can best be understood by comparing them along gradients of abiotic stress, consumer pressure, and among different life stages, sizes, and densities of the interacting species. Here, we discuss the roles of life stage, physiology, indirect interactions, and the physical environment on the balance of competition and facilitation in plant communities.

The Nebline, October 1997

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Contents:
Celebrate Character Counts! week
Books and activities celebrating the Six Pillars of Character
Caring for fuchsia
Garden poster contest for youth
Potbound
Harvesting popcorn
Clean up that garden
Last 1997 Household Hazardous Waste Collection
Web sights
There's a mouse in the house!
Interested in a variety of experiences?
Consider estate settlement costs early
No-till into alfalfa residual
Farmers need to protect themselves, employees from work-related illnesses
Fall clean-up of warm season grasses
Handling wastewater
Proper electrical wiring helps prevent most farm fires
CRP: blessing or curse?
Food Safety Programs
Safe Food for the Hungry '97--A Focus on Diversity
Diabetes …

Evidence For A Volcanic Cooling Signal In A 335-Year Coral Record From New Caledonia, Thomas J. Crowley, Terrence M. Quinn, Frederick W. Taylor, Christian Henin, Pascale Joannot

Marine Science Faculty Publications

Although volcanic cooling events have been detected in tree ring records, their occurrence in marine records has received much less attention, Herein we report results from a 335-year oxygen isotope record (1657-1992) from a New Caredonia coral indicating that as many as 16 interannual-scale cooling events occur within 1 year of a volcanic eruption as determined by ice core records, There are also pentadal/decadal-scale cooling events beginning in 1675, 1813, and 1903 that immediately postdate volcanic eruptions. However, the interannual correspondences are complicated by the fact that some of the cooling events also coincide with El Ninos, which cause cooling …

Ard News October 1997

Agricultural Research Division: News and Annual Reports

CONTENTS:
COMMENTS FROM THE DEAN
Announcing the ARD Undergraduate Honors Student Research Program
FY 1998 CSREES Budget
Research, Extension and Education Title of the 1996 Farm Bill
Regional Research Program Changes
Widaman Trust Distinguished Graduate Assistant Award
Hardin Distinguished Graduate Fellowship for 1997-98
Innovative and High Risk Research Program
New or Revised Projects
Grants Bnd Cantracts Received August and September 1997
UNL Rankings far Research and Development Expenditures

Louisiana Agriculture Magazine, Fall 1997, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Irf-7, A New Interferon Regulatory Factor Associated With Epstein-Barr Virus Latency, Luwen Zhang, Joseph S. Pagano

Nebraska Center for Virology: Faculty Publications

The Epstein-Barr virus (EBV) BamHI Q promoter (Qp) is the only promoter used for the transcription of Epstein-Barr virus nuclear antigen 1 (EBNA-1) mRNA in cells in the most restricted (type I) latent infection state. However, Qp is inactive in type III latency. With the use of the yeast one-hybrid system, a new cellular gene has been identified that encodes proteins which bind to sequence in Qp. The deduced amino acid sequence of the gene has significant homology to the interferon regulatory factors (IRFs). This new gene and products including two splicing variants are designated IRF-7A, IRF-7B, and IRF-7C. The …

Small-Scale Settlement Patterns Of The Oyster Crassostrea Virginica On A Constructed Intertidal Reef, Ik Bartol, Roger L. Mann

VIMS Articles

The construction of three-dimensional, intertidal reefs resembling those widely present during colonial times in the Chesapeake Bay, but now absent due to years of overharvesting, may provide a more ecologically advantageous environment for oyster settlement and subsequent survival than present subtidal, two-dimensional habitats. We examined settlement processes on a constructed, 210 x 30 m intertidal reef composed of oyster shell. The reef was destructively and non-destructively sampled weekly throughout the summer and fall at tidal heights ranging from 30 cm above to 90 cm below mean low water (MLW) and at two substrate levels (reef surface and 10 cm below …

Strata Formation On Margins (Strataform) G-60 Site Benthic Boundary Layer Tripod Data Report, November 1996 - January 1997, D. A. Hepworth, C. T. Friedrichs, L. D. Wright

Reports

No abstract provided.

Core Conservation Biology Monographs: A Citation Analysis, Chad E. Buckley

Faculty and Staff Publications – Milner Library

Conservation biology is a multidisciplinary subject of recent origins. Analysis of cited monographs from the journal Conservation Biology resulted in a list of 47 monographs which were heavily cited for this discipline. Over half of these were from related disciplines such as ecology, genetics, evolution, population biology, statistics, and natural resource management.