Testing Temperature Preference and Critical Thermal Maximum Across Walleye Populations
dc.contributor.author | Rose, David | |
dc.contributor.advisor | Alofs, Karen | |
dc.date.accessioned | 2023-04-20T21:38:00Z | |
dc.date.available | 2024-04-20 17:38:00 | en |
dc.date.issued | 2023-04 | |
dc.date.submitted | 2023-04 | |
dc.identifier.uri | https://hdl.handle.net/2027.42/176185 | |
dc.description.abstract | Intraspecific variation in fish, particularly temperature preference and critical thermal maximum (CTmax), can reflect the vulnerability of species to extreme warming events in the face of climate change. Using fingerling fish, we examined the temperature preferences of three Michigan walleye (Sander vitreus) populations across a latitudinal gradient using a shuttle-box arena. We then tested the CTmax of the same fish. We found no significant difference in temperature preference across the test populations; however, the CTmax of the northern population was about 0.6°C lower than one of the southern populations. We found several limitations in the use of shuttlebox experiments to reliably capture differences in thermal preferences for walleye. Additionally, we developed a new method for calculating preferred temperature which excludes periods where fish do not appear to regulate temperature. With this new method, we found an adjusted preferred temperature for Michigan walleye juveniles of 22.75 ± 2.59°C (mean±SD); this closely mirrors the reported temperature of optimal growth. The average estimated CTmax was 33.71 ± 0.43°C. Results suggest that walleye from northern populations may be more vulnerable to extreme warming events than southern populations. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Intraspecific variation | en_US |
dc.subject | temperature preference | en_US |
dc.subject | Great Lakes Basin | en_US |
dc.subject | Sander vitreus | en_US |
dc.subject | walleye | en_US |
dc.title | Testing Temperature Preference and Critical Thermal Maximum Across Walleye Populations | en_US |
dc.type | Thesis | en_US |
dc.description.thesisdegreename | Master of Science (MS) | en_US |
dc.description.thesisdegreediscipline | School for Environment and Sustainability | en_US |
dc.description.thesisdegreegrantor | University of Michigan | en_US |
dc.contributor.committeemember | Breck, James | |
dc.identifier.uniqname | damiro | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/176185/1/Rose, David_thesis.pdf | |
dc.identifier.doi | https://dx.doi.org/10.7302/7124 | |
dc.working.doi | 10.7302/7124 | en_US |
dc.owningcollname | Dissertations and Theses (Ph.D. and Master's) |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.