Index Catalog // ScholarsArchive@OSU

Structure and mechanism of diet specialisation: testing models of individual variation in resource use with sea otters

Creator:: Tinker, M. Tim, Guimaraes, Paulo R. Jr., Novak, Mark, Marquitti, Flavia Maria Darcie, Bodkin, James L., Staedler, Michelle, Bentall, Gena, and Estes, James A.
Abstract:: Studies of consumer-resource interactions suggest that individual diet specialisation is empirically widespread and theoretically important to the organisation and dynamics of populations and communities. We used weighted networks to analyze the resource use by sea otters, testing three alternative models for how individual diet specialisation may arise. As expected, individual...
Resource Type:: Article
Full Text:: untitled L E T T E R Structure and mechanism of diet

Endogenous ROS levels in C. elegans under exogenous stress support revision of oxidative stress theory of life-history tradeoffs

Creator:: Smith, Samson W., Latta, Leigh C., Denver, Dee R., and Estes, Suzanne
Abstract:: BACKGROUND: The oxidative stress theory of life-history tradeoffs states that oxidative stress caused by damaging free radicals directly underpins tradeoffs between reproduction and longevity by altering the allocation of energetic resources between these tasks. We test this theory by characterizing the effects of exogenous oxidative insult and its interaction with...
Resource Type:: Article

In Vivo Quantification Reveals Extensive Natural Variation in Mitochondrial Form and Function in Caenorhabditis briggsae

Creator:: Hicks, Kiley A., Howe, Dana K., Leung, Aubrey, Denver, Dee R., and Estes, Suzanne
Abstract:: In We have analyzed natural variation in mitochondrial form and function among a set of Caenorhabditis briggsae isolates known to harbor mitochondrial DNA structural variation in the form of a heteroplasmic nad5 gene deletion (nad5 Delta) that correlates negatively with organismal fitness. We performed in vivo quantification of 24 mitochondrial...
Resource Type:: Article
Full Text:: . Howe2, Aubrey Leung2, Dee R. Denver2, Suzanne Estes1* 1 Biology Department, Portland State University

Evolution of a Higher Intracellular Oxidizing Environment in Caenorhabditis elegans under Relaxed Selection

Creator:: Joyner-Matos, Joanna, Hicks, Kiley A., Cousins, Dustin, Keller, Michelle, Denver, Dee R., Baer, Charles F., and Estes, Suzanne
Abstract:: We explored the relationship between relaxed selection, oxidative stress, and spontaneous mutation in a set of mutation-accumulation (MA) lines of the nematode Caenorhabditis elegans and in their common ancestor. We measured steady-state levels of free radicals and oxidatively damaged guanosine nucleosides in the somatic tissues of five MA lines for...
Resource Type:: Article
Full Text:: . Hicks2., Dustin Cousins1, Michelle Keller1, Dee R. Denver3, Charles F. Baer4, Suzanne Estes2

Selfish Little Circles: Transmission Bias and Evolution of Large Deletion-Bearing Mitochondrial DNA in Caenorhabditis briggsae Nematodes

Creator:: Clark, Katie A., Howe, Dana K., Gafner, Kristin, Kusuma, Danika, Ping, Sita, Estes, Suzanne, and Denver, Dee R.
Abstract:: Selfish DNA poses a significant challenge to genome stability and organismal fitness in diverse eukaryotic lineages. Although selfish mitochondrial DNA (mtDNA) has known associations with cytoplasmic male sterility in numerous gynodioecious plant species and is manifested as petite mutants in experimental yeast lab populations, examples of selfish mtDNA in animals...
Resource Type:: Article
Full Text:: , Dana K. Howe1, Kristin Gafner1, Danika Kusuma1, Sita Ping1, Suzanne Estes2, Dee R. Denver1* 1

Broccoli Breeding, Evaluation : Oregon Processed Vegetable Commission Continuing Project Report, 2016

Creator:: Myers, James R.
Abstract:: Processors need broccoli with better quality traits than what is available in cultivars developed for California and Mexico fresh markets. Farmers need to reduce labor costs of broccoli production by mechanizing harvest. Most contemporary commercially available cultivars are not suitable for either mechanical harvest or processing. The objective of the...
Resource Type:: Technical Report
Full Text:: , Evaluation PI: James R. Myers Organization: Oregon State University Telephone: 541-737-3083 Email

The Second Chance Program : A Participatory Research with Formerly Incarcerated Community College Students

Creator:: Macale, James R.
Abstract:: Approximately 600,000 individuals will be eventually released from the prison system and millions will be released from jails across the United States each year (Mukamal et al., 2015). Some of these individuals will make their way to a local community college to make a better life for themselves. There is...
Resource Type:: Dissertation
Full Text:: James R. Macale for the degree of Doctor of Education in Education presented on June 8, 2016. Title

Extending the clinical applications of commercially available optically stimulated luminescence (OSL) dosimeters

Creator:: Keller, James R.
Abstract:: We present the results of our experiments designed to extend the clinical applications of commercially available Optically Stimulated Luminescence (OSL) Dosimeters. Our initial experiments demonstrate the linear response of the OSL dosimeters for doses under 200 cGy and the non-linear response of the device after 200 cGy. Our experiments show...
Resource Type:: Dissertation
Full Text:: R. Keller for the degree of Doctor of Philosophy in Medical Physics presented on June 3, 2013

Selfish Mitochondrial DNA Proliferates and Diversifies in Small, but not Large, Experimental Populations of Caenorhabditis briggsae

Creator:: Phillips, Wendy S., Coleman-Hulbert, Anna L., Weiss, Emily S., Howe, Dana K., Ping, Sita, Wernick, Riana I., Estes, Suzanne, and Denver, Dee R.
Abstract:: Evolutionary interactions across levels of biological organization contribute to a variety of fundamental processes including genome evolution, reproductive mode transitions, species diversification, and extinction. Evolutionary theory predicts that so-called “selfish” genetic elements will proliferate when the host effective population size (N[subscrit]e) is small, but direct tests of this prediction remain...
Resource Type:: Article

Broccoli Breeding, Evaluation and Seed Production : Report to the Oregon Processed Vegetable Commission, 2013-2014

Creator:: Myers, James R. and Yorgey, Brian
Abstract:: Research efforts were focused on testing various inbred combinations for hybrid production and adaptation to Oregon growing conditions. Trials at the Vegetable Re-search Farm included a yield trial of OSU derived hybrids, and observation trials of OSU inbreds and hybrids. Breeding funds were used for a major portion of the...
Resource Type:: Technical Report
Full Text:: –2014 1. Title: Broccoli Breeding, Evaluation and Seed Production 2. Project Leaders: James R. Myers

ScholarsArchive@OSU

Structure and mechanism of diet specialisation: testing models of individual variation in resource use with sea otters

Endogenous ROS levels in C. elegans under exogenous stress support revision of oxidative stress theory of life-history tradeoffs

In Vivo Quantification Reveals Extensive Natural Variation in Mitochondrial Form and Function in Caenorhabditis briggsae

Evolution of a Higher Intracellular Oxidizing Environment in Caenorhabditis elegans under Relaxed Selection

Selfish Little Circles: Transmission Bias and Evolution of Large Deletion-Bearing Mitochondrial DNA in Caenorhabditis briggsae Nematodes

Broccoli Breeding, Evaluation : Oregon Processed Vegetable Commission Continuing Project Report, 2016

The Second Chance Program : A Participatory Research with Formerly Incarcerated Community College Students

Extending the clinical applications of commercially available optically stimulated luminescence (OSL) dosimeters

Selfish Mitochondrial DNA Proliferates and Diversifies in Small, but not Large, Experimental Populations of Caenorhabditis briggsae

Broccoli Breeding, Evaluation and Seed Production : Report to the Oregon Processed Vegetable Commission, 2013-2014

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Conference Section/Track

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search