Life Sciences Commons^™

Sporophytic Inbreeding Depression In Mosses Occurs In A Species With Separate Sexes But Not In A Species With Combined Sexes, Philip J. Taylor, Sarah M. Eppley, Linley K. Jesson

Biology Faculty Publications and Presentations

Inbreeding depression is a critical factor countering the evolution of inbreeding and thus potentially shaping the evolution of plant sexual systems. Current theory predicts that inbreeding depression could have important evolutionary consequences, even in haploid-dominant organisms. To date, no data have been reported on inbreeding depression in moss species. Here, we present data on the magnitude of inbreeding depression in sporophytic traits of moss species with contrasting breeding systems. In eratodon purpureus (Ditrichaceae), a moss species with separate sexes, self-fertilizations between sibling gametophytes (intergametophytic selfing) significantly reduced fitness in two of four traits quantified, with seta length and capsule length …

Bio Buzz Newsletter, Issue 1, November 2007, Department Of Biology

Biology Buzz Newsletter

Denison University, Department of Biology newsletter for 2007.

Life History Parameters Of Ceratitis Capitata (Diptera: Tephritidae) Reared On Liquid Diets, Chiou Ling Chang, Carlos Caceres, Sunday Ekesi

All Peer-Reviewed Publications

A liquid diet for rearing Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) was developed. Several yeast-based products were evaluated as diet ingredients, and a combination of whole cell yeast (LBI2240) and hydrolyzed yeast (such as FNILS65) in 1:1-3:1 ratio was selected for use in the study. Larvae reared in a liquid diet with LBI2240:FNILS65 ratios of either 1:1 or 3:1 resulted in the same pupal recovery as to those reared in the conventional mill fee- based control diet. Larvae reared in a liquid diet with whole cell yeast only yielded the lowest pupal production, whereas other parameters such as adult emergence, adult …

Forage Potential Of Temperate Legumes With Perennial Grasses In The Southern Plains, John A. Guretzky, Twain Butler, Matt Mattox

Department of Agronomy and Horticulture: Faculty Publications

INTRODUCTION

Rising costs of N fertilizer coupled with evidence of improved forage production and quality has increased interest among beef cattle producers in legume-grass mixtures for pasture. Our objectives were to evaluate forage yields of temperate legumes seeded with perennial grasses in the Southern Plains. Replicated field trials were established in 2006 at Burneyville, OK; Vashti, TX; and Stephenville, TX, to evaluate potential legume dry matter (DM) yields under different soil and rainfall regimes.

MATERIALS AND METHODS

Burneyville. Legumes were broadcast-seeded and lightly raked by hand within individual 3 x 5 m plots in an existing stand of eastern gamagrass …

Re-Occurrence Of The Tropical Green Macroalga, Penicillus Capitatus (Chlorophyta: Bryopsidales), In Lower Laguna Madre Of South Texas., Joseph L. Kowalski, Donald L. Hockaday, Gilbert H. Boza Jr., Hudson R. Deyoe

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The siphonaceous green alga Penicillus capitatus Lamarck is a common macroalga of the Carribean and Gulf of Mexico (Littler & Littler 2000). This shaving brush-shaped macroalga was a common inhabitant of the Lower Laguna Madre Texas (LLM) until about 40 years ago when the population was decimated following a salinity decline in the fall of 1959, another salinity reduction due to Hurricane Carla in 1961, and finally a severe freeze in 1962 (Sorensen 1963). Since that time, there have been no reports of P. capitatus in the LLM. During a reconnaissance trip in July 2006, a small population was found …

Comparison Of Probabilistic Boolean Network And Dynamic Bayesian Network Approaches For Inferring Gene Regulatory Networks, Peng Li, Chaoyang Zhang, Edward J. Perkins, Ping Gong, Youping Deng

Faculty Publications

Background: The regulation of gene expression is achieved through gene regulatory networks (GRNs) in which collections of genes interact with one another and other substances in a cell. In order to understand the underlying function of organisms, it is necessary to study the behavior of genes in a gene regulatory network context. Several computational approaches are available for modeling gene regulatory networks with different datasets. In order to optimize modeling of GRN, these approaches must be compared and evaluated in terms of accuracy and efficiency.

Results: In this paper, two important computational approaches for modeling gene regulatory networks, …

Comparison Of A Low Carbohydrate And Low Fat Diet For Weight Maintenance In Overweight Or Obese Adults Enrolled In A Clinical Weight Management Program, James D. Lecheminant, Cheryl A. Gibson, Debra K. Sullivan, Sandra Hall, Rik Washburn, Mary C. Vernon, Chelsea Curry, Elizabeth Stewart, Eric C. Westman, Joseph E. Donnelly

Faculty Publications

Background: Recent evidence suggests that a low carbohydrate (LC) diet may be equally or more effective for short-term weight loss than a traditional low fat (LF) diet; however, less is known about how they compare for weight maintenance. The purpose of this study was to compare body weight (BW) for participants in a clinical weight management program, consuming a LC or LF weight maintenance diet for 6 months following weight loss. Methods: Fifty-five (29 low carbohydrate diet; 26 low fat diet) overweight/obese middle-aged adults completed a 9 month weight management program that included instruction for behavior, physical activity (PA), and …

Wakefield Land Conservation Education & Outreach Project, Cindy Barstow, Cheri Schlenker

PREP Reports & Publications

The Town of Wakefield has experienced an unprecedented growth explosion in the past seven years. Pressures to use heretofore undeveloped land for the construction of residential housing has threatened the natural resources of this community. The projected growth rate has the potential to severely impact Wakefield’s natural resources. While the town has undertaken a comprehensive revision of zoning, site plan and subdivision regulations, it is important that voluntary land protection measures are advanced to secure permanent protection of valuable resources.

Horizontal Transfer Of A Nitrate Assimilation Gene Cluster And Ecological Transitions In Fungi: A Phylogenetic Study, Jason C. Slot, David S. Hibbett

Biology

High affinity nitrate assimilation genes in fungi occur in a cluster (fHANT-AC) that can be coordinately regulated. The clustered genes include nrt2, which codes for a high affinity nitrate transporter; euknr, which codes for nitrate reductase; and NAD(P)H-nir, which codes for nitrite reductase. Homologs of genes in the fHANT-AC occur in other eukaryotes and prokaryotes, but they have only been found clustered in the oomycete Phytophthora (heterokonts). We performed independent and concatenated phylogenetic analyses of homologs of all three genes in the fHANT-AC. Phylogenetic analyses limited to fungal sequences suggest that the fHANT-AC has been transferred horizontally from a basidiomycete …

Forage Spokesman Information, Lowell J. Clifford, Barry Drury, John Mcglone, Mac Stone

Kentucky Grazing Conference

No abstract provided.

Techniques For Reducing Mud Problems And Improving Pasture Abused Areas, Ken Johnson

Kentucky Grazing Conference

I would like to approach this topic from two directions, mud control and then problem areas. Mud control in concentrated areas almost impossible with forages alone. Using a mud control product is usually advised. I will talk about several.

My Experiences With Summer Lovegrass, Tim Phillips

Kentucky Grazing Conference

I first heard about teff (Eragrostis tef) being used as a hay crop in early 2006 at a meeting near the Shenandoah Valley area of Virginia. The meeting was about orchardgrass production, so I was speaking about new varieties that are available for producers to grow. Several farmers had experienced massive stand losses of their established orchardgrass hay fields, so they had tried this ‘new’ summer annual grass. Some of the farmers were surprised that I knew about this grass, but I didn’t know about its use as a hay or pasture grass. Teff is the Ethiopian name for a …

Experiences With "Teff" (Summer Love Grass) In Kentucky, Bob Jaynes

Kentucky Grazing Conference

Following publicity about the Klamath Experiment Station evaluation of Teff as an annual forage in 2003 and 2004, requests for more information and seed sources kept KES staff busy for weeks last spring. We received over 300 contacts from 41 states. Local seed salesman Laverne Hankins processed over 150 orders for more than 5 tons of seed. Those who received seed were sent a questionnaire this fall in hopes that we would get feedback on growers experience with this new forage species. To date we have received responses from about 15 growers.

Options For Summer Grazing, David C. Ditsch

Kentucky Grazing Conference

Summer is the time during the growing season when shortages of forage most often occur in Kentucky. The summer of 2007 will long be remembered as one the warmest and driest in recent years and cause many livestock producers to evaluate their current forage systems. Most Kentucky pastures are predominately cool-season grasses such as tall fescue, orchardgrass and bluegrass. During the historically hot, dry periods in July and August, these species produce very little growth and can quickly become overgrazed. At this point, some producers have no alternative except to buy feed or begin feeding stored forage intended for winter …

Does Grazing Method Matter?, Garry D. Lacefield

Kentucky Grazing Conference

Interest in and opportunities for grazing continues to increase not only in Kentucky, but throughout the U.S. In Wisconsin, 12% or approximately 5000 dairymen are now using grazing. In Michigan, over 40% of the dairymen are using grazing for a significant part of their feed requirements. Over 15% of these dairymen are using intensive grazing. Similar numbers exist for Pennsylvania.

Surviving The 2007 Drought, Roy Burris

Kentucky Grazing Conference

Kentucky beef producers could feel the effects of the ’07 drought for a long time. Decisions made now will impact the ’08 and ’09 calf crops. The current hay/feed shortage has stimulated a lot of “panic buying”. Feedstuffs with very low nutritive values are being purchased at an alarming rate. These “feeds” are being purchased at much higher costs than we normally pay for good quality hay. If properly supplemented, they can be used successfully. However, their use to replace the normal hay supply could have disastrous results.

Recovering From The "Freeze" And "Drought" Of 2007, S. Ray Smith

Kentucky Grazing Conference

As all of you know, 2007 has been a devastating year for forage agriculture in Kentucky. The season started with an abnormally warm 7 weeks during late winter and early spring, which promoted lush vegetative growth. Normally this would have been a “good thing”, but it actually made forage plants more vulnerable to below freezing temperatures. Then the severe freeze occurred, with April 7, 8, and 9 the coldest 3 day period in April in KY history. Pastures were stunted for weeks and first cut hay yields were reduced by 35 to 100%. At this point we were still hopeful …

Foreword And Kfgc Award Winners [2007], Garry D. Lacefield, Christi L. Forsythe

Kentucky Grazing Conference

No abstract provided.

Smokejumper Obituary: Lowman, Ben J. (Missoula 1968), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Ua12/2/1 College Heights Herald, Vol. 83, No. 17, Wku Student Affairs

WKU Administration Documents

WKU campus newspaper reporting campus, athletic and Bowling Green, Kentucky news.

2006 National Survey Of Fishing, Hunting, And Wildlife-Associated Recreation

United States Fish and Wildlife Service: Publications

The National Survey of Fishing, Hunting, and Wildlife-Associated Recreation reports results from interviews with U.S. residents about their fishing, hunting, and wildlife watching. This report focuses on 2006 participation and expenditures of persons 16 years of age and older.

However, in addition to 2006 estimates, we also provide trend information in the Highlights section and Appendix C of the report. The 2006 numbers reported can be compared with those in the 1991, 1996, and 2001 Survey reports because they used similar methodologies. However, 2006 estimates should not be directly compared with results from Surveys conducted earlier than 1991 because of …

Cell Death In Health And Disease, Richard A. Lockshin, Zahra Zakeri

Publications and Research

Cell death is clearly an important factor in development, homeostasis, pathology and in aging, but medical efforts based on controlling cell death have not become major aspects of medicine. There are several reasons why hopes have been slow to be fulfilled, and they present indications for new directions in research. Most effort has focused on the machinery of cell death, or the proximate effectors of apoptosis and their closely associated and interacting proteins. But cells have many options other than apoptosis. These include autophagy, necrosis, atrophy and stepwise or other alternate means of self-disassembly. The response of a cell to …

Relative Effects Of Mammal Herbivory And Plant Spacing On Seedling Recruitment Following Fire And Mining, Michael H. Parsons, Christine M. Rafferty, Byron B. Lamont, Kenneth Dods, Meredith M. Fairbanks

Natural Resources Research Articles

No abstract provided.

Barker, S. & D. W. Middleton - Farm Ledger, 1872-1885 (Sc 1522), Manuscripts & Folklife Archives

Manuscript Collection Finding Aids

Finding aid only for Manuscripts Small Collection 1522. Farm ledger kept by S. Barker and Daniel Wilcoxson Middleton of Warren County, Kentucky. The farm was located approximately five miles east of Bowling Green on the Louisville Road (Highway 31-W). Records expenses and wages for farm laborers.

Contrasting Infection Strategies In Generalist And Specialist Wasp Parasitoids Of Drosophila Melanogaster, Todd A. Schlenke, Jorge Morales, Shubha Govind, Andrew G. Clark

Publications and Research

Although host–parasitoid interactions are becoming well characterized at the organismal and cellular levels, much remains to be understood of the molecular bases for the host immune response and the parasitoids’ ability to defeat this immune response. Leptopilina boulardi and L. heterotoma, two closely related, highly infectious natural parasitoids of Drosophila melanogaster, appear to use very different infection strategies at the cellular level. Here, we further characterize cellular level differences in the infection characteristics of these two wasp species using newly derived, virulent inbred strains, and then use whole genome microarrays to compare the transcriptional response of Drosophila to each. While …

Why Do High School Seniors Drink? Implications For A Targeted Approach To Intervention, Donna L. Coffman, Megan E. Patrick, Lori Ann Palen, Brittany L. Rhoades, Alison K. Ventura

Kinesiology and Public Health

The transition from high school to college provides a potentially critical window to intervene and reduce risky behavior among adolescents. Understanding the motivations (e.g., social, coping, enhancement) behind high school seniors’ alcohol use could provide one important avenue to reducing risky drinking behaviors. In the present study, latent class analysis was used to examine the relationship between different patterns of drinking motivations and behaviors in a sample of 12th graders (N = 1,877) from the 2004 Monitoring the Future survey. Unlike previous variable-centered analyses, this person-centered approach identifies types of motivations that cluster together within individuals and relates membership …

Concurrent Panel Session 1: Environmental Sustainability And Las Vegas, Dale A. Devitt, David E. James, Patricia Mulroy, Alan O'Neill, Thomas C. Piechota, Doug Selby, Krystyna Anne Stave, Michael Yackira, Bruce Turner

Shaping the Future of Southern Nevada: Economic, Environmental, and Social Sustainability

Moderator: Dr. Stan Smith, UNLV School of Life Sciences Scribe: Crystal Jackson, UNLV Department of Sociology Conference white paper & Full summary of panel session, 6 pages

Review Of Durham’S Regulations Related To Stormwater Management Durham, New Hampshire, Stone Environmental, Inc.

PREP Reports & Publications

This report provides a review of Durham’s Zoning Ordinance, Subdivision Regulations, Site Plan Review Regulations, Road Construction Regulations, and proposed Stormwater Ordinance regarding 1) compliance with state and federal stormwater regulations, and 2) how well these ordinances and regulations may be expected to perform in managing stormwater. The revisions suggested in these documents are intended to improve stormwater management in Durham for the benefit of the community and the protection of its water resources and wetlands. STONE

K12-Biotinylated Histone H4 Marks Heterochromatin In Human Lymphoblastoma Cells, Gabriela Camporeale, Anna M. Oommen, Jacob B. Griffin, Gautam Sarath, Janos Zempleni

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

Covalent modifications of histones play crucial roles in chromatin structure and genomic stability. Recently, we reported a novel modification of histones: biotinylation of lysine residues. Here we provide evidence that K12-biotinylated histone H4 (K12Bio H4) maps specifically to both heterochromatin (alpha satellite repeats in pericentromeric regions) and transcriptionally repressed chromatin (γ-G globin and interleukin-2) in human lymphoblastoma cells. The abundance of K12Bio H4 in these regions was similar to that of K9-dimethylated histone H3, a known marker for heterochromatin. Likewise, K8-biotinylated histone H4 (K8Bio H4) mapped to heterochromatin, but the relative enrichment was smaller compared with K12Bio H4. Stimulation of …

Effect Of Discriminative Plant-Sugar Feeding On The Survival And Fecundity Of Anopheles Gambiae, Hortance Manda, Louis C. Gouagna, Woodbridge A. Foster, Robert R. Jackson, John C. Beier, John I. Githure, Ahmed Hassanali

All Peer-Reviewed Publications

Background. A previous study showed for Anopheles gambiae s.s. a gradation of feeding preference on common plant species growing in a malaria holoendemic area in western Kenya. The present follow-up study determines whether there is a relationship between the mosquito's preferences and its survival and fecundity. Methods. Groups of mosquitoes were separately given ad libitum opportunity to feed on five of the more preferred plant species (Hamelia patens, Parthenium hysterophorus, Ricinus communis, Senna didymobotrya, and Tecoma stans) and one of the less preferred species (Lantana camara). The mosquitoes were monitored daily for survival. Sugar solution (glucose 6%) and water were …