Walleye Sander vitreus Visceral Fat Accumulation

Authors

Cole Daleiden
Seth Renner

Document Type

Article

Abstract

For ectothermic species, proper lipid retention is critical to surviving in regions with limited growing seasons. Visceral fat is the dominant form of this energy storage in fish. Build up and depletion of these lipids occur seasonally as activity levels change throughout winter and spring. Due to this annual pattern, the purpose of this study is to determine a trend in the amount of visceral fat Walleye Sander vitreus accumulate in a time of year when metabolic rates are low and transition into the spawning process has yet to occur. Angling was the method of capture conducted during the months of January and February between two northern Minnesota lakes. Percent visceral wet mass was significantly different among listed fish sex categories with mature females having the highest levels (P < 0.01). Total visceral wet weight compared to percent visceral dry mass also had a significant positive relationship (P = 0.04). No evidence suggests correlation between relative weight (Wr) and percent visceral dry mass (P = 0.08).

Publication Date

2020

Comments

Faculty sponsor: Dr. Andrew Hafs, Department of Biology, Aquatic Biology Program

Recommended Citation

Daleiden, Cole and Renner, Seth, "Walleye Sander vitreus Visceral Fat Accumulation" (2020). Journal of Earth and Life Science. 19.
https://pines.bemidjistate.edu/j-earth-life-sci/19