Swimming Kinematics of Rainbow Trout Behind Cylinder Arrays
Author Information
Author(s): David Sparks, Edwin Rajeev, Subhra Shankha Koley, Alberto Canestrelli, James C. Liao
Primary Institution: University of Florida
Hypothesis
The swimming kinematics of rainbow trout will differ based on the vortex organization produced by different cylinder arrays.
Conclusion
Rainbow trout did not exhibit Kármán gaiting but maintained swimming kinematics similar to freestream swimming, with some differences in tail amplitude depending on the cylinder array.
Supporting Evidence
- The swimming kinematics of rainbow trout were largely preserved across two different cylinder array treatments.
- Tail beat frequency decreased and snout amplitude increased when cylinders were present.
- Fish did not synchronize their tail beats to the vortex shedding frequency behind the cylinder arrays.
Takeaway
The way rainbow trout swim changes when they are near groups of cylinders in the water, but they don't swim as expected in a special way called Kármán gaiting.
Methodology
The study used computational fluid dynamics simulations and live experiments to analyze the swimming kinematics of rainbow trout in different flow conditions.
Potential Biases
Potential biases in fish selection and environmental control during experiments.
Limitations
The sample size was small, which may have limited the ability to detect significant differences in swimming kinematics.
Participant Demographics
Juvenile rainbow trout (Oncorhynchus mykiss) with a mean body length of 7.4 cm.
Statistical Information
P-Value
p=0.00168
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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