Calibrating acceleration transmitters to quantify the seasonal energetic costs of activity in lake trout.

Autor: Reeve C; Department of Biology, Carleton University, Ottawa, Ontario, Canada., Smith KA; Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, Burlington, Ontario, Canada., Bzonek PA; Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, Burlington, Ontario, Canada., Cooke SJ; Department of Biology, Carleton University, Ottawa, Ontario, Canada.; Institute of Environmental and Interdisciplinary Science, Carleton University, Ottawa, Ontario, Canada., Blanchfield PJ; Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, Manitoba, Canada., Brownscombe JW; Department of Biology, Carleton University, Ottawa, Ontario, Canada.; Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, Burlington, Ontario, Canada.
Jazyk: angličtina
Zdroj: Journal of fish biology [J Fish Biol] 2024 Dec; Vol. 105 (6), pp. 1769-1783. Date of Electronic Publication: 2024 Sep 03.
DOI: 10.1111/jfb.15916
Abstrakt: Bioenergetics models are powerful tools used to address a range of questions in fish biology. However, these models are rarely informed by free-swimming activity data, introducing error. To quantify the costs of activity in free-swimming fish, calibrations produced from standardized laboratory trials can be applied to estimate energy expenditure from sensor data for specific tags and species. Using swim tunnel respirometry, we calibrated acceleration sensor-equipped transmitting tags to estimate the aerobic metabolic rates (ṀO 2 ) of lake trout (Salvelinus namaycush) at three environmentally relevant temperatures. Aerobic and swim performance were also assessed. Like other calibrations, we found strong relationships between ṀO 2 and acceleration or swimming speed, and jackknife validations and data simulations suggest that our models accurately predict metabolic costs of activity in adult lake trout (~5% algebraic error and ~20% absolute error). Aerobic and swim performance metrics were similar to those reported in other studies, but their critical swimming speed was lower than expected. Additionally, lake trout exhibited a wide aerobic scope, suggesting that the avoidance of waters ≥15°C may be related to selection for optimal growing temperatures. The ability to quantify the free-swimming energetic costs of activity will advance our understanding of lake trout ecology and may yield improvements to bioenergetics model.
(© 2024 The Author(s). Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
Databáze: MEDLINE
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