Oral Presentations
Location
Room 232, Schewel Hall
Access Type
Campus Access Only
Entry Number
61
Start Date
4-10-2019 2:45 PM
End Date
4-10-2019 3:00 PM
College
Lynchburg College of Arts and Sciences
Department
Biomedical Science
Abstract
Many teleosts exhibit intraspecific variation that often correlates with differences in resources and habitat. We evaluated the extent of intraspecific variation in yellow perch, Perca flavescens, between two lakes (a mining-influenced lake vs. a spring-fed lake) that present substantial visibility differences. By examining their body morphology we evaluated whether these traits indicate any correlation and intraspecific divergence. P. flavescens from the mining-influenced lake (with low visibility) showed greater angular velocity and acceleration during predator escape response than the fish from the spring-fed lake (with high visibility) in previous research. These differences in predator escape kinematics and performance we identified between the two P. flavescens populations appear to be correlated with their body morphology. Compared to P. flavescens from the spring-fed lake, the fish from the mining-influenced lake were shorter and deeper with a wider caudal peduncle, suggesting that these morphological traits contribute to the ability to quickly maneuver in the water column rather than the ability to cruise. In the context of predator-prey interaction, perhaps occurring differently due to the ecological differences, body morphology changes during growth in the way that these structural components of locomotor design in P. flavescens contribute to enhance predator escape performance.
Faculty Mentor(s)
Dr. Takashi Maie
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Correlation Between Morphology, Predator Escape Performance, and Material Properties of the Vertebrae in Yellow Perch, Perch flavescens (Pisces: Percidae): Intraspecific Divergence in Functional Design
Room 232, Schewel Hall
Many teleosts exhibit intraspecific variation that often correlates with differences in resources and habitat. We evaluated the extent of intraspecific variation in yellow perch, Perca flavescens, between two lakes (a mining-influenced lake vs. a spring-fed lake) that present substantial visibility differences. By examining their body morphology we evaluated whether these traits indicate any correlation and intraspecific divergence. P. flavescens from the mining-influenced lake (with low visibility) showed greater angular velocity and acceleration during predator escape response than the fish from the spring-fed lake (with high visibility) in previous research. These differences in predator escape kinematics and performance we identified between the two P. flavescens populations appear to be correlated with their body morphology. Compared to P. flavescens from the spring-fed lake, the fish from the mining-influenced lake were shorter and deeper with a wider caudal peduncle, suggesting that these morphological traits contribute to the ability to quickly maneuver in the water column rather than the ability to cruise. In the context of predator-prey interaction, perhaps occurring differently due to the ecological differences, body morphology changes during growth in the way that these structural components of locomotor design in P. flavescens contribute to enhance predator escape performance.