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Is Evolutionary Biology Infected With Invalid Teleological Reasoning? Invited Review Essay Of John Reiss, Retiring Darwin’S Watchmaker., David Depew 2009 University of Iowa

Is Evolutionary Biology Infected With Invalid Teleological Reasoning? Invited Review Essay Of John Reiss, Retiring Darwin’S Watchmaker., David Depew

David J Depew

No abstract provided.


Emerging Themes In The Ecology And Management Of North American Forests, Fred Baker 2009 Utah State University

Emerging Themes In The Ecology And Management Of North American Forests, Fred Baker

Frederick A. Baker

The 7th North American Forest Ecology Workshop, consisting of 149 presentations in 16 oral sessions and a poster session, reflected a broad range of topical areas currently under investigation in forest ecology and management. There was an overarching emphasis on the role of disturbance, both natural and anthropogenic, in the dynamics of forest ecosystems, and the recognition that legacies from past disturbances strongly influence future trajectories. Climate was invoked as a major driver of ecosystem change. An emphasis was placed on application of research findings for predicting system responses to changing forest management initiatives...


Echolocation Behavior Of Brazilian Free-Tailed Bats During Dense Emergence Flights, E. Gillam, N. Hristov, Gary McCracken 2009 University of Tennessee, Knoxville

Echolocation Behavior Of Brazilian Free-Tailed Bats During Dense Emergence Flights, E. Gillam, N. Hristov, Gary Mccracken

Gary F. McCracken

Brazilian free-tailed bats (Tadarida brasiliensis) emerge from cave roosts in dense columns in which adjacent bats are separated by only small distances. We describe and quantify variation in the structure of echolocation calls produced by these emerging bats and determine if call structure changes in relation to the rate of emergence measured using thermal infrared imaging. We recorded emergence calls at 2 roosts, 1 housing approximately 200,000 bats and the other approximately 17,000 bats. We found that Brazilian free-tailed bats emit distinct frequency-modulated (FMstart) and constant frequency (CFstart) calls during emergence that are significantly different from echolocation calls ...


Understanding Stem Cell Research: Controversy And Promise, Father Nicanor Austriaco 2009 Providence College

Understanding Stem Cell Research: Controversy And Promise, Father Nicanor Austriaco

Rev. Nicanor Austriaco, O.P.

What are embryonic stem cells, why are they so exciting and yet controversial, and what can be done to move our society beyond the current moral and political impasse? To provide answers to these questions, we will begin with a basic introduction to the science behind stem cell research. We will then move to a description of the emerging field of regenerative medicine, the main reason why stem cell research has generated so much excitement in the scientific community. As we will see, the drive to develop stem cells for regenerative medicine has linked stem cell research with the controversy ...


Pathology In Practice. Ranavirus Infection., M. Ruder, A. Allison, Debra Miller, M. Keel 2009 University of Tennessee, Knoxville

Pathology In Practice. Ranavirus Infection., M. Ruder, A. Allison, Debra Miller, M. Keel

Debra L Miller

No abstract provided.


Video: Body Languages: Choreographing Biology, Katja Kolcio 2009 Wesleyan University

Video: Body Languages: Choreographing Biology, Katja Kolcio

Katja Kolcio Ph.D.

Co-taught by professors Manju Hingorani and Katja Kolcio at Wesleyan University, this course was an introduction to human biology. From scientific and choreographic perspectives, students practiced movement awareness and learned basic principles of choreography, and applied these skills to the exploration of human biology. Manju Hingorani, Professor of Molecular Biology and Biochemistry Katja Kolcio, Associate Professor of Dance and Environmental Studies


The Genus Xerula, Ronald Petersen, Karen Hughes 2009 University of Tennessee, Knoxville

The Genus Xerula, Ronald Petersen, Karen Hughes

Karen Hughes

No abstract provided.


A Bird’S-Eye View On The Function Of Sleep, Charles Amlaner, Niels Rattenborg 2009 Kennesaw State University

A Bird’S-Eye View On The Function Of Sleep, Charles Amlaner, Niels Rattenborg

Charles J. Amlaner

Sleep has been detected in every animal that has been adequately studied (Cirelli & Tononi, 2008). The ubiquitous nature of sleep suggests that it evolved early in the course of evolution and therefore may serve a conserved function essential to all animals. This hypothesis forms the rationale behind the development of “simple” animal models of sleep (Allada & Siegel, 2008; Mignot, 2008). By studying sleep in animals such as the fruit fly (Drosophila melanogaster), where the power of genetic techniques can be readily employed,we may gain insight into the initial (perhaps cellular) function of sleep, a function that may still be relevant to understanding sleep in humans. Indeed, recent studies have already demonstrated remarkable similarities between sleep in Drosophila and sleep in mammals (Hendricks, Finn, Panckeri, et al., 2000; Shaw, Cirelli, Greenspan, et al., 2000; reviewed in Cirelli & Bushey, 2008). Although the utility of studying sleep in“simple”animal models is undeniable, it is unlikely that this approach alone will tell the whole story, especially given that Drosophilado not exhibit brain states comparable to mammalian slow-wave sleep (SWS) and rapid eye-movement (REM) sleep (Cirelli, 2006; Cirelli & Bushey, 2008; Hendricks & Sehgal, 2004; Nitz, van Swinderen, Tononi, et al ...


The Biology Of Reality Testing - Implications For Cognitive Education, Neil Greenberg 2009 University of Tennessee - Knoxville

The Biology Of Reality Testing - Implications For Cognitive Education, Neil Greenberg

Neil Greenberg

• This report explores the proposition that teaching effectiveness can be enhanced by accommodating the key differences between two complementary and deeply engrained modes of reality testing, each predominantly centered in different hemispheres of the brain. • (1) Correspondence involves “reality-testing” of a percept, the cerebral representation of an experience in the world. • (2) Coherence involves “textualizing”, that is, reality-testing of a percept by how easily it relates to previous and ongoing parallel and collateral experiences. • Confidence in the validity of any percept throughout development is related to the interplay of these key processes. • As organisms develop, the “reference base” of previous ...


Sport In Canada: A History, Donald Morrow, Kevin Wamsley 2009 Western University Canada

Sport In Canada: A History, Donald Morrow, Kevin Wamsley

Donald Morrow

No abstract provided.


Recovery Of Sasajiscymnus Tsugae, Released Against Hemlock Woolly Adelgid, Adelges Tsugae, In The Southern Appalachians, Abdul Hakeem 2009 University of Tennessee - Knoxville

Recovery Of Sasajiscymnus Tsugae, Released Against Hemlock Woolly Adelgid, Adelges Tsugae, In The Southern Appalachians, Abdul Hakeem

Abdul Hakeem

Eastern hemlock in the Great Smoky Mountains National Park is currently threatened by the hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae). As part of a management plan against this invasive insect pest, about 350,000 adults of the predatory beetle Sasajiscymnus tsugae (Sasaji and McClure) (Coleoptera: Coccinellidae) were released at ca. 150 sites in the Park from 2002 to 2007. Of these adult release sites, 33 were sampled in 2008 and 2009 using beatsheet sampling for 4 man-hours. Sasajiscymnus tsugae adults (n=78) and/or larvae (n=145) were recovered from seven sites (21.2% of the release sites ...


Community Digester Operations And Dairy Farmer Perspectives, Joseph Welsh, Megan Swindal, Gilbert Gillespie 2009 Syracuse University

Community Digester Operations And Dairy Farmer Perspectives, Joseph Welsh, Megan Swindal, Gilbert Gillespie

Rick Welsh

Rising energy costs, increasing herd sizes, and other structural changes affecting the New York dairy industry may make farmers receptive to new energy production technologies. Anaerobic digestion represents a possible benefit to farmers by reducing odor while pro-ducing methane for electricity. However, current digester designs are for herd sizes of 300 or more cows, with significant economies of scale, so smaller operators may have little interest in the technology. Moreover, without a favorable policy environment and reliable grant programs, the initial investments required for digester installation might deter operators. One solution to these issues may be community digesters, which are ...


Characterization Of Nutritionally Important Carotenoids In Bunching Onion, Dean Kopsell, Carl Sams, Dennis Deyton, Kristin Abney, David Kopsell, Larry Robertson 2009 University of Tennessee - Knoxville

Characterization Of Nutritionally Important Carotenoids In Bunching Onion, Dean Kopsell, Carl Sams, Dennis Deyton, Kristin Abney, David Kopsell, Larry Robertson

Dean A. Kopsell

Members of the Allium genus are consumed for their culinary flavor attributes, but also contain antioxidant and anticarcinogenic phytochemicals. Bunching onions (Allium fistulosum L.) are commonly used in Asian cuisine, in which both leaves and pseudostems are consumed. Carotenoids and chlorophylls are important classes of phytochemicals gaining attention for their health attributes. The goal of our study was to characterize carotenoids and chlorophylls and identify possible genetic and environmental influences on carotenoid concentrations among A. fistulosum accessions. Twelve USDA-ARS accessions were field grown in Knoxville, TN, and Geneva, NY, during the summer of 2007. After harvest, carotenoid and chlorophyll pigments ...


Cougar Presence Influences Diet Optimization In Ungulate Prey, Michael Wolfe, Gary Belovsky, David Choate 2009 Utah State University

Cougar Presence Influences Diet Optimization In Ungulate Prey, Michael Wolfe, Gary Belovsky, David Choate

Michael L. Wolfe

Background/Question/Methods Risk-induced changes in prey behavior appear in many predator-prey communities, often triggering cascades to additional trophic levels when prey alter intake rates or diet selection; however, the fitness consequences of predation risk remain unclear. Natural colonization by cougars (Puma concolor) on the National Bison Range (Montana, USA) enabled the testing of predictions from foraging theory that assess the fitness consequences of predation-sensitive foraging decisions by ungulate prey. Diets of herbivores prior to colonization by cougars matched expectations based on an energy maximization foraging goal predicted by a linear programming model. Here, behavioral observations and new field data ...


Distributed Representations Of Dynamic Facial Expressions In The Superior Temporal Sulcus., Chris Said, Chris Moore, Andrew Engell, Alex Todroov, James Haxby 2009 Kenyon College

Distributed Representations Of Dynamic Facial Expressions In The Superior Temporal Sulcus., Chris Said, Chris Moore, Andrew Engell, Alex Todroov, James Haxby

Andrew Engell

n/a


T Competency: A Simple Metric For Measuring Multidisciplinarity., Peter August 2009 University of Rhode Island

T Competency: A Simple Metric For Measuring Multidisciplinarity., Peter August

Peter August

No abstract provided.


Expression Of Hcmv Ie1 In The U87mg Cell Line Augments Resistance To Temozolomide, Richard Rovin, Johnathan Lawrence, Justin Segula, Robert Winn 2009 Northern Michigan University

Expression Of Hcmv Ie1 In The U87mg Cell Line Augments Resistance To Temozolomide, Richard Rovin, Johnathan Lawrence, Justin Segula, Robert Winn

Johnathan Lawrence

INTRODUCTION: Human cytomegalovirus (HCMV) DNA and protein are found in gliomas but not in normal brain or other primary brain tumors. The role of HCMV infection in glioma biology is unclear. While it is unlikely that HCMV infection causes glioma, viral proteins might impart a proliferative and antiapoptotic phenotype that confers a survival advantage. Does this oncomodulation translate into a clinically relevant effect in glioma cells? To answer this question, we compared the response of the U87IE1 and U87MG malignant glioma cell lines to temozolomide. U87IE1 cells are U87MG cells that have been genetically engineered to produce HCMV IE1 protein ...


Spatiotemporal Variation Of Fruit Digestible-Nutrient Production In Florida's Uplands, J. Layne, W. Abrahamson 2009 Selected Works

Spatiotemporal Variation Of Fruit Digestible-Nutrient Production In Florida's Uplands, J. Layne, W. Abrahamson

Warren G. Abrahamson, II

We examined annual total digestible nutrient (TDN) production by fruits of eight species (Quercus chapmanii, Q. geminata, Q. inopina, Q. laevis, Q. myrtifolia, Carya floridana, Sabal etonia, Serenoa repens) that account for the major proportion of TDN production by fruits and seeds in Florida’s xeric upland associations (southern ridge sandhill, sand pine scrub, scrubby flatwoods). Mean annual fruit TDN of all species combined over a 27-year span in sandhill and scrub and 24 years in scrubby flatwoods was highest (45.4 kg/ha) in sandhill, intermediate in scrubby flatwoods (28.8 kg/ha), and lowest in scrub (14.2 ...


The Delimitation Of Flammulina Fennae, Soňa Ripková, Karen Hughes, Slavomír Adamčík, Viktor Kučera, Katarína Adamčíková 2009 University of Tennessee, Knoxville

The Delimitation Of Flammulina Fennae, Soňa Ripková, Karen Hughes, Slavomír Adamčík, Viktor Kučera, Katarína Adamčíková

Karen Hughes

Multivariate morphometric analyses of micromorphological characters measured on 35 specimens of Flammulina fennae and related species show that only a combination of spore dimensions and ixohyphidia characters are suitable for delimitation of this species. In order to confirm species identifications based on micromorphology, ribosomal ITS DNA sequences were obtained and compared with those previously deposited in GenBank, and phylogenetic analyses were performed using an ITS dataset of all known Flammulina species. All six specimens morphologically determined as F. fennae were identified by molecular data. Two of twelve specimens morphologically assigned to F. velutipes had F. elastica sequences. One ITS sequence ...


Influence Of Perinatal Exposure To A Polychlorinated Biphenyl Mixture On Learning And Memory, Hippocampal Size, And Estrogen Receptor-Beta Expression, Howard Cromwell 2009 Bowling Green State University

Influence Of Perinatal Exposure To A Polychlorinated Biphenyl Mixture On Learning And Memory, Hippocampal Size, And Estrogen Receptor-Beta Expression, Howard Cromwell

Howard Casey Cromwell

Abstract. Perinatal exposure to PCB has been reported to cause a variety of health effects including endocrine disruption, and immunologic, reproductive, neurologic, and behavioral deficits. In the present study, a mixture of two PCB congeners, one non-coplanar (PCB 47) and one coplanar (PCB 77), were administered to young female Sprague-Dawley rats by route of maternal dietary consumption (either 12.5 ppm or 25.0 ppm, w/w). Impact on learning and memory were examined by radial arm maze on postnatal day 24-27. After behavioral tests were completed, the rats were transcardially perfused, and brains were excised. Immunohistochemistry for ER- β ...


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