What question did this study set out to answer?

To determine the thermal requirements for egg fertilization, egg incubation, juvenile growth, and upper lethal limits in walleye and sauger early life stages.

May 1, 1976Journal of the Fisheries Research Board of Canada

Thermal Requirements of the Early Life History Stages of Walleye, Stizostedion vitreum vitreum, and Sauger, Stizostedion canadense

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To determine the thermal requirements for egg fertilization, egg incubation, juvenile growth, and upper lethal limits in walleye and sauger early life stages.
Exposed walleye and sauger eggs to incubation and fertilization temperatures ranging from 6 to 21 °C.
Evaluated juvenile growth at test temperatures and determined 96-hour upper lethal temperatures following acclimation between 8–26 °C for walleye and 10–26 °C for sauger.
Optimum fertilization temperatures were 6–12 °C for walleye and 9 °C for sauger, whereas optimum incubation temperatures were 9–15 °C for both species.
Optimum growth for both walleye and sauger juveniles occurred at 22 °C, with sharp temperature fluctuations showing no substantial effect on walleye fry survival.
Upper 96-hour lethal temperatures increased with higher acclimation temperatures, spanning 27.0–31.6 °C for walleye and 26.6–30.4 °C for sauger.

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Implication

Laboratory study demonstrates optimal growth and developmental temperatures in walleye and sauger, indicating critical thermal thresholds for early life survival.

Cite This Study

Koenst et al. (1976) studied this question.

synapsesocial.com/papers/6a8c4cbfbd1df77ed485311c https://doi.org/10.1139/f76-141

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Implication

Laboratory study demonstrates optimal growth and developmental temperatures in walleye and sauger, indicating critical thermal thresholds for early life survival.

Thermal Requirements of the Early Life History Stages of Walleye, Stizostedion vitreum vitreum, and Sauger, Stizostedion canadense

Key Points

Discussion

Implication

Cite This Study

Thermal Requirements of the Early Life History Stages of Walleye, Stizostedion vitreum vitreum, and Sauger, Stizostedion canadense

Key Points

Discussion

Implication

Cite This Study

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