Biology Scholar Communities
The Summer Scholar Communities program blends the structure of a summer session class with the format of a research team focused on a faculty-designed research project. Students spend 16-18 hours per week for eight to ten weeks on a research project, working with several other students and faculty mentors. The Summer Scholar Communities Program differs from traditional undergraduate research in that students and faculty from various disciplines across the College of Sciences and Mathematics meet regularly over the course of the summer to share results, to learn from each other, to present their research findings and discuss challenges and commonalities. The students present their findings at Belmont's Science Undergraduate Research Symposium (SURS) in the fall.
Summer Scholars 2015
The College of Sciences & Mathematics hosted a poster session for summer scholars and faculty members to showcase their summer research projects.
Dr. Chris Barton's research group -- Taeler Dahm, Robin Weyman, Eleyah Tanwar, Nelly Grigorian, Jeff King, Vian Pulous, Jasmine Mohn, and Morgan Turner -- explored the ways in which cells respond to environmental stresses. Human cells are constantly exposed to multiple forms of stress. Perhaps the most common stress encountered by our cells presents in the form of damage to our genetic material, DNA. DNA damage can be caused by numerous stimuli such as exposure to ultraviolet light (UV), radiation, or oxidative stress. Due to this, cells have a very large number of genes that are expressed specifically under conditions of cellular stress. Our ability to identify, and classify, genes that are specifically expressed during times of cellular stress is essential to our understanding of how cells respond to these potentially-damaging DNA mutations. By exposing cell cultures to a variety of stresses and then examining the expression of specific genes including genes implicated in cancer.
Dr. Darlene Panvini’s research group -- Lindsay Millward, Katlin Stodard, Ayda Porkar Rezaeieh, Alex Jeffers, Laura Horton, Sara Haney, and Walter Burn -- focused on two major studies: a study of the impact of restoration on water quality at Richland Creek and a study of the relative abundance of exotic invasive earthworms in a preservation area. The Richland Creek restoration occurred this past year as trees were planted in the riparian zone by a nonprofit organization. Two sites were chosen: a site with relatively newly planted trees and a site with mature trees in the riparian zone. This data will provide a baseline, foundation set of data of the restoration site for future studies as the trees mature. Water quality was assessed by two measures. First, a macroinvertebrate survey. Second, water quality was determined by examining nine variables that are used to determine a Water Quality Index (Q) and compared among the two sites. The nine variables are: temperature, pH, nitrates, turbidity, presence of E. coli, total dissolved solids, dissolved oxygen, biological oxygen demand, and phosphates. The worm study team collected data on the distribution of worms and plants in different plots, removed the exotic species, and then re-sampled. The initial data collection serves as a baseline data set to compare to future studies at this site. By sampling the occurrence of the exotic species and then removing them, I can bring students to this site in future years to determine the recolonization rates of plants – both exotic and native – at this site.
Dr. Lori McGrew's research group -- Lindsey Cheek, Lindsey Dennis, Samantha Gould, Tessa Shupe, Araceli Garland, Donald Hoyle, Brandy Sweet and Melissa Wolf -- worked with Danio rerio (zebrafish) as a model organism and focused on assessment of anxiety or memory in the fish. Zebrafish are easily maintained and manipulated. Zebrafish, as vertebrates, have additional complexity that is useful for behavioral models. While these fish have long been used by developmental biologists, their utility for neuroscientists has only recently come to light. Their social structure and conditioned behaviors are beginning to be characterized. Experiments that test memory in the fish are performed in a T-maze, captured on video, and analyzed to determine how often the zebrafish chose the correct side and how long they took to make their decision. Our data suggest that fish treated with cannabinoids, tricyclic antidepressants and cholesterol-lowering medications in the statin family, all have impaired working memory.
Previous studies in our lab demonstrated that the antimicrobial agent, triclosan, had a negative effect on working memory in adult Danio rerio. Current studies examined the effect of triclosan on zebrafish embryos and larvae. We found that chronic low doses of this antimicrobial agent resulted in slower growth and development in the fish. Once the fish reached maturity, we compared their working memory to that of the control group. A second group of zebrafish embryos was exposed to video recordings either continuously or for several hours each day. We found that the constant exposure group had a significant increase in mortality. Taken together, our data suggest that a number of commonly prescribed medications and chemicals have a detrimental effect on working memory in Danio rerio, and potentially on humans. Because of the growing body of research and their cost effectiveness, zebrafish are gaining acceptance as a model organism for preliminary drug trials.
Summer Scholars 2014
Summer Scholars poster session for summer scholars and faculty members to showcase their summer research projects
Dr. John Niedzwiecki mentored a group of students whose research focused on predator avoidance behavior. These students collected snails from a nearby stream and measured the snails’ ability to detect and avoid predators. The snails were able to detect differences in type and size of the predator as well as how long ago the predator was present. Students who worked with Dr. Niedzwiecki were Nicole Knowles, Taylor Mills, Raina Burley, Sonia Kadakia and Brielle Davis. These students will also present their findings at the Tennessee Academy of Sciences meeting at Walter State Community College and Belmont’s Science Undergraduate Research Symposium (SURS) this fall.
Dr. Lori McGrew’s research group used zebrafish (Danio rerio) to assess differences in memory and anxiety following treatment with various chemicals. The chemicals tested by this group included: nicotine, buproprion (an antidepressant), triclosan (an antimicrobial), a pre-workout supplement and a cannabinoid-like compound. The students were able to determine that both triclosan and the pre-workout supplement increased anxiety while the cannabinoid compound and buproprion decreased anxiety as measured in the Danios. Student researchers were Karah Parker, Iqra Wahid, Hensley Barnes, Jaime Wesley and Cassie Wyatt. These students will present their findings at the Society for Neuroscience Conference in Washington, DC and Belmont’s Science Undergraduate Research Symposium (SURS) this fall.
Summer Scholars 2013
The College of Arts and Sciences’ Summer Scholar Communities hosted a poster session on August 30th in the Hitch Science Building for students and faculty to showcase their work.
Dr. Darlene Panvini mentored a group of Biology and Environmental Science majors investigating the "Impact of Exotic Plants on Abundance, Diversity, and Distribution of Earthworms". The students participating were Sarah Gilmore (Environmental Science), Kari Morse (Biology) and Megan Swaine (Environmental Science). Little is known about the occurrence of earthworms in areas invaded by exotic plants, though the "biomass of invasive shrubs has been associated with biomass of exotic earthworms in eastern North America" (EREN proposal). Earthworms play a crucial role in decomposition of leaf litter and the regeneration of carbon in the carbon cycle. The presence or absence of earthworms can affect nutrient cycling and levels of biodiversity in ecosystems. In some instances, the presence of exotic earthworms has contributed to the loss of rare plant species and reduced seedling survival. Humans are the major vectors for earthworms; earthworm, exotic plant, and human movement "have been associated with land-use patterns, disturbance, and deer herbivory" (EREN proposal). Not clear, however, is the impact of invasive shrubs on earthworm diversity or the vice versa effect.
Dr. John Niedzwiecki mentored a group of Biology and Environmental Science majors including Court Reese, Valini Ramcharan and Kyle Sullinger (all Biology) along with Hannah Martin (Environmental Science). Court worked to determine the relationship between two populations of salamanders by comparing mitochondrial DNA. Valini and Kyle studied the effects of size and predator cues on snail behavior. Hannah's project used Geographic Information System (GIS) to collect data about local environments.
Dr. Lori McGrew had a group of Biology majors who worked with Danio rerio (zebra fish) to explore the effect of different compounds on memory and anxiety in the fish. Two students, Allison McCoy and Jen Myer, used antidepressants to treat the fish and then measured the effect on the fish's working memory. Katie Farrell tested the homeopathic compound, Bacopa, to determine whether this herbal supplement had an effect on working memory or anxiety in zebra fish. Finally, Jordan Gann measured anxiety in zebra fish following their exposure to the pesticide glyphosate.The Summer Scholar Communities program blends the structure of a summer session class with the format of a research team focused on a faculty-designed research project. Students spend 16-18 hours per week for eight to ten weeks on a research project, working with several other students and faculty mentors. The Summer Scholar Communities Program differs from traditional undergraduate research in that students and faculty from various disciplines across the College of Arts and Sciences meet regularly over the course of the summer to share results, to learn from each other, to present their research findings and discuss challenges and commonalities. The students will present their findings at Belmont’s Science Undergraduate Research Symposium (SURS) this fall.
2012Dr. Nick Ragsdale's Caenorhabditis elegans Group - Liberty Foye, Anderson Webb, Brad Gill and Scott Kim; Rachel Garland continued work on the role of oxidants in the formation of Parkinson's like disease.
Dr. Darlene Panvini's Groups - Jessica Braden, Emma Ghulam Jan, and Anna Witherspoon compared rates of photosynthesis and stomatal density in leaves of exotic vines to native vines; Sylvia Alsup, Lida Ghulam Jan, and Lauren Land compared macroinvertebrate diversity in areas of the Little Harpeth River
Dr. John Niedzwiecki's Groups - Bellamy Hawkins and Breanna Poore worked on chemical detection of predation cues in an aquatic snail; Parth Majmudar looked for signs of "intelligence" in Orconectes crayfish; Janet Steen and Amy Nesius successfully developed microsatellites for use in Spotted salamanders;Rachel Chandler studied streamside salamanders -- She was able to present that work as a poster at the International Evolutionary Biology conference in Ottawa, Canada this past summer with Dr. Niedzwiecki.
McGrew Zebrafish Group: Alesya Borisyuk, Tristan Daniel, and Vishan Ramcharan
Niedzwiecki Behavioral Ecology of Snails Group: Abader Almosawi and Kelsey Grant
Ragsdale C. elegans Group: Samera Berhane, Sylvia Chac, and Roxie Musharrafeia
Murphree Medical Entomology Group: RaeAnne Lauffer, Rachel Serfass, Libby Thorndike, and Ryan Baker
McGrew Zebrafish Group: Taylor Andrews, Steven Avers, Taylor Beazley, and Katy Parsley
Niedzwiecki Behavioral Ecology Group: Caleb Binkley, Amy Fehrman, Mark McFarland, and Ati Osinusi
McGrew Zebrafish Group: Kelli Boone, Abby Murphy, Bao Nguyen, Ola Osinusi, and Alyson Singh
Niedzwiecki Salamander Group: Sara Bentley, Kendra Cowan, Chris Pilny, and Beth Schriner
Grammer Insulting C. elegans through Chemicals and Pathogens Group: Sachin Amin and Christina Inman
McGrew Zebrafish and Learning Group: Jeanna Bardin, Jackie Hunter, Roshni Patel, and Taylor Walter
Murphree Conenose Bug Group: Dana Halchak and Ludia Kim
Niedzwiecki Behavior and Ecology of the Streamside Salamander Group: Will Baugher, Ginna Beazley, and Lauren Oeser
Ragsdale Worms in Our Community Group: Josh Cortopassi, Cy Eaton, Robbie Gibson, and Brittany Myers
McGrew Zebrafish and Behavior Group: Adam Gilliland, Michelle Howell, Becky Repasky, and Jelena Stupar
Ragsdale C. elegans as a Model Organism for Studying Biology Group: Stephen May, Chelsea Wilson, and Bethany Woodard
Grammer Chemotaxis Group: Ananta Bhatt
McGrew Worm Brain Consortium Group: Stacey Apple, Adam Militana, Becky Repasky, Trisha Siewnarine, and Corey Winfree
Panvini Biology and Ecology of Exotics Group: Neely Osteen, Amanda Simpson, and Rejana Wells
Ragsdale Worm Group: Kelly Deweese, Ashley Dozier, Michel Mosby, and Kristen Sorensen
Grammer, McGrew, and Ragsdale Worm Brain Consortium: Jimmy Berthaud, Tuyen Bui, Trisha Siewarine, Kelly Deweese, Ashley Dozier, Ricky Patel and Meg Voss
Panvini Biology and Ecology of Exotics Group: Lee Griggs, Amanda Stinnett, and Rejana Wells
Panvini Exotic Plants Group: Kristin Furman, Alex Grzeszczak, and Jenny Pollard
Ragsdale Worm Group: Scott Russell