Student Author Information

Lilli AltenburgFollow

Access Type

Campus Access Only

Presentation Type

Oral Presentation

Start Date

April 2019

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)

Takashi Maie, Ph.D

Rights Statement

The right to download or print any portion of this material is granted by the copyright owner only for personal or educational use. The author/creator retains all proprietary rights, including copyright ownership. Any editing, other reproduction or other use of this material by any means requires the express written permission of the copyright owner. Except as provided above, or for any other use that is allowed by fair use (Title 17, §107 U.S.C.), you may not reproduce, republish, post, transmit or distribute any material from this web site in any physical or digital form without the permission of the copyright owner of the material.

Share

COinS
 
Apr 10th, 2:45 PM

Intraspecific Divergence in Yellow Perch (Perca Flavescens): Correlation between ecology and functional performance

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.