Phenotype-genotype mapping of color patterning in poison frogs
Rebecca Tarvin, Professor
Integrative Biology, Museum of Vertebrate Zoology
Closed. This professor is continuing with Spring 2026 apprentices on this project; no new apprentices needed for Fall 2026.
Poison frogs are known for their diverse array of colors and color patterning. The Tarvin Lab studies the genetics and diversity of color in Epipedobates poison frogs from Ecuador. Currently we are generating whole-genome resequencing data for >400 individual frogs that vary in their color from brown to bright yellow. We are seeking support to analyze color images of each individual, which will be used to identify specific genes that are correlated with differences in spot and stripe patterning in the frogs. The Tarvin lab is a positive work environment with 10+ undergraduates involved in research each semester.
Role: This specific project will involve standardization, manipulation, and data collection (e.g. background removal, pixel counting, color analysis) of hundreds of digital images in Adobe Photoshop and ImageJ order to quantify color and pattern components for different individual frogs. The resulting data will be put into a statistical test (GWAS) that can identify genetic variation that is associated with differences in color phenotypes. This opportunity will provide students with training in scientific research in evolutionary biology and genetics. Students will also have access to professional development opportunities, including attending weekly lab meetings with the Tarvin lab and Museum of Vertebrate Zoology community events (e.g. seminars, weekly coffee hour, Herp Group, etc.). The overall expected outcome is the development of scientific skills to prepare for a career in science. Highly responsible and inquisitive students may have the option of developing independent thesis projects within the context of this research or as part of other ongoing projects in the lab after their second semester in the lab.
Qualifications: Competitive applicants will have several or all of the following qualities: excellent organization and communication skills, aptitude for creative-problem solving, detail-oriented, ability to work independently, a positive attitude, interest in amphibians, evolutionary biology and/or genetics, and interest in staying for 2+ semesters. Students are expected to attend lab meeting each week and fully participate as a member of the research group.
This position will likely be hybrid, with the bulk of the work being performed independently and meetings being held in-person.
Hours per week are flexible between 6-8 (2 credits) or 9-11 (3 credits).
Day-to-day supervisor for this project: Ammon Corl, Staff Researcher
Hours: 6-8 hrs
Related website: https://www.tarvinlab.org/research
Biological & Health Sciences