Life in the fast lane: The free-ranging activity, heart rate and metabolism of an Antarctic fish tracked in temperate waters

Campbell, H. A., Fraser, K. P. P., Peck, L. S., Bishop, C. M. and Egginton, S. (2007) Life in the fast lane: The free-ranging activity, heart rate and metabolism of an Antarctic fish tracked in temperate waters. Journal of Experimental Marine Biology and Ecology, 349 1: 142-151. doi:10.1016/j.jembe.2007.05.009


Author Campbell, H. A.
Fraser, K. P. P.
Peck, L. S.
Bishop, C. M.
Egginton, S.
Title Life in the fast lane: The free-ranging activity, heart rate and metabolism of an Antarctic fish tracked in temperate waters
Journal name Journal of Experimental Marine Biology and Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 2007-01-01
Sub-type Article (original research)
DOI 10.1016/j.jembe.2007.05.009
Open Access Status DOI
Volume 349
Issue 1
Start page 142
End page 151
Total pages 10
Editor Herman, P. M. J.
Shumway, S. E.
Place of publication Amsterdam
Publisher Elsevier Science BV
Language eng
Subject C1
270599 Zoology not elsewhere classified
771103 Living resources (flora and fauna)
Abstract The fish species Notothenia angustata inhabits temperate waters (10 degrees C, yet retains physiological traits that show it once existed at sub-zero temperatures. We determined the free-ranging activity, heart rate and metabolism of N. angustata and compared it with Notothenia coriiceps, an ecologically and morphologically congeneric cousin that still inhabits sub-zero waters. Firstly, the association between heart rate (fH) and oxygen consumption MO2) was first determined in the laboratory. The fish were then released into their respective environments and fH recorded by a miniature archival electronic tag, from which the metabolic rate of the free-ranging fish was extrapolated. Free-ranging activity of wild fish was monitored throughout the study using implanted acoustic tags and a static hydrophone array. Results showed that the difference in standard metabolic rate (SMR) between N. angustata and N. coriiceps fitted the Arrhenius model for inter-species thermal sensitivity in fish (Q(10)= 1.76). However, the interspecies disparity in total metabolic rate (TMR) was far greater. This was attributable to N. angustata swimming at higher speeds and covering a 5-fold greater area over 24 It compared with N. coriiceps. As a result, activity (and associated feeding) comprised a far larger portion of TMR in N. angustata (27.9%) than for N. coriiceps (5.7%). We conclude that the increased time spent swimming by N. angustata was presumably to forage for food to acquire sufficient energy to fuel its elevated SMR. This resulted in a much greater inter-species difference in TMR than may be predicted by the disparity in environmental temperature. (C) 2007 Elsevier B.V. All rights reserved.
Keyword Ecology
Marine & Freshwater Biology
acclimatisation
adaptation
notothemoid
telemetry
temperature
New-zealand
Notothenia Coriiceps
Cold Adaptation
Environments
Plasticity
Growth
Ocean
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Tue, 19 Feb 2008, 00:59:29 EST