TY - JOUR
T1 - Swimming energetics and thermal ecology of adult bonefish (Albula vulpes)
T2 - a combined laboratory and field study in Eleuthera, The Bahamas
AU - Nowell, Liane B.
AU - Brownscombe, Jacob W.
AU - Gutowsky, Lee F.G.
AU - Murchie, Karen J.
AU - Suski, Cory D.
AU - Danylchuk, Andy J.
AU - Shultz, Aaron
AU - Cooke, Steven J.
N1 - Funding Information:
Funding for this project was generously provided by NSERC, the Canada Foundation for Innovation and Bonefish and Tarpon Trust. We thank Gabriel Blouin-Demers, William Willmore and Jeff Dawson for valuable input on this manuscript. We also thank the Cape Eleuthera Institute for use of their facilities and students from The Island School for their assistance with fish collection. Adam Fuller, Brittany Sims, Emma Samson, Eric Schneider, Felicia St. Louis, Gray Horwitz, Ian Rossiter, Kelly Hannan, Kylie Bloodsworth, Luke Griffin, Petra Szekeres, Stacey Dorman, Zach Zuckerman and Melissa Dick provided logistic support and expert field assistance. All research was conducted in accordance with the policies of the Canadian Council on Animal Care as administered by the Carleton University Animal Care Committee (Protocol B10-06).
Publisher Copyright:
© 2015, Springer Science+Business Media Dordrecht.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Knowledge of the swimming energetics and thermal ecology of sub-tropical and tropical coastal species is extremely limited, yet this information is critical for understanding animal–environment relationships in the face of climate change. Using the ecologically and economically important sportfish, bonefish (Albula vulpes), we determined the critical swimming speed (Ucrit), metabolic rates (Formula presented.), scope for activity, and cost of transport (COTnet) across a range of temperatures using a swim tunnel. For both critical swimming speed and scope for activity, optimal (Topt) and critical (Tcrit) temperatures were determined. The optimal temperature for Ucrit (96 cm/s) was 28.0 °C and the optimal temperature for scope for activity (7.5 mgO2/min/kg) was 26.7 °C. We also estimated the thermal profile of bonefish in the wild using surgically implanted thermal loggers. Of the 138 implanted fish, eight were recaptured with functional loggers. After 220 days more than 55 % of recaptured tagged fish had expelled their thermal loggers. Thermal profiles revealed that bonefish did not exceed laboratory-determined critical temperatures (i.e., 14.5 °C minima and 37.9 °C maxima) and spent the majority of their time at their critical swimming speed optimal temperature. Nonetheless, fish experienced wide variation in daily temperature—both through time (up to 8 °C diel fluctuation and 14 °C seasonally) and among individuals. Collectively, laboratory and field data suggest that bonefish occupy habitats that approach, but rarely exceed (0.51 % of the time) their Tcrit. Bonefish routinely experienced water temperatures in the field that exceeded their Topt (~54 % of the time). Even minor increases in temperature (e.g., 1 °C) in tidal creeks will lead to greater exceedances of Topt and Tcrit or potentially reduce access of bonefish to essential feeding areas.
AB - Knowledge of the swimming energetics and thermal ecology of sub-tropical and tropical coastal species is extremely limited, yet this information is critical for understanding animal–environment relationships in the face of climate change. Using the ecologically and economically important sportfish, bonefish (Albula vulpes), we determined the critical swimming speed (Ucrit), metabolic rates (Formula presented.), scope for activity, and cost of transport (COTnet) across a range of temperatures using a swim tunnel. For both critical swimming speed and scope for activity, optimal (Topt) and critical (Tcrit) temperatures were determined. The optimal temperature for Ucrit (96 cm/s) was 28.0 °C and the optimal temperature for scope for activity (7.5 mgO2/min/kg) was 26.7 °C. We also estimated the thermal profile of bonefish in the wild using surgically implanted thermal loggers. Of the 138 implanted fish, eight were recaptured with functional loggers. After 220 days more than 55 % of recaptured tagged fish had expelled their thermal loggers. Thermal profiles revealed that bonefish did not exceed laboratory-determined critical temperatures (i.e., 14.5 °C minima and 37.9 °C maxima) and spent the majority of their time at their critical swimming speed optimal temperature. Nonetheless, fish experienced wide variation in daily temperature—both through time (up to 8 °C diel fluctuation and 14 °C seasonally) and among individuals. Collectively, laboratory and field data suggest that bonefish occupy habitats that approach, but rarely exceed (0.51 % of the time) their Tcrit. Bonefish routinely experienced water temperatures in the field that exceeded their Topt (~54 % of the time). Even minor increases in temperature (e.g., 1 °C) in tidal creeks will lead to greater exceedances of Topt and Tcrit or potentially reduce access of bonefish to essential feeding areas.
KW - Biologger
KW - Bonefish
KW - Respirometry
KW - Scope for activity
KW - Swimming
KW - Temperature
UR - http://www.scopus.com/inward/record.url?scp=84943666226&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84943666226&partnerID=8YFLogxK
U2 - 10.1007/s10641-015-0420-6
DO - 10.1007/s10641-015-0420-6
M3 - Article
AN - SCOPUS:84943666226
VL - 98
SP - 2133
EP - 2146
JO - Environmental Biology of Fishes
JF - Environmental Biology of Fishes
SN - 0378-1909
IS - 11
ER -