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Respiration rate and cost of swimming for Antarctic krill, Euphausia superba, in large groups in the laboratory
Citation
Swadling, KM and Ritz, DA and Nicol, S and Osborn, JE and Gurney, LJ, Respiration rate and cost of swimming for Antarctic krill, Euphausia superba, in large groups in the laboratory, Marine Biology, 146, (6) pp. 1169-1175. ISSN 0025-3162 (2005) [Refereed Article]
DOI: doi:10.1007/s00227-004-1519-z
Abstract
Constructing realistic energy budgets for Antarctic krill, Euphausia superba, is hampered by the lack of data on the metabolic costs associated with swimming. In this study respiration rates and pleopod beating rates were measured at six current speeds. Pleopod beating rates increased linearly with current speed, reaching a maximum of 6 beats s-1 at 17 cm s -1. There was a concomitant linear increase in respiration rate, from 1.8 mg O2 gD -1 h-1 at 3 cm s -1 to 8.0 mg O2 gD -1 h-1 at 17 cm s-1. The size of the group tested (50, 100 and 300 krill) did not have a significant effect on pleopod beating rates or oxygen consumption (ANCOVA, F=0.264; P>0.05). The cost of transport reached a maximum of 75 J g-1 km-1 at 5 cm s-1, and then decreased with increasing current speed to 29 J g-1 km-1. When considered in light of energy budgets for E. superba, these data indicate that the cost of swimming could account for up to 73% of total daily metabolic expenditure during early summer. © Springer-Verlag 2005.
Item Details
Item Type: | Refereed Article |
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Research Division: | Biological Sciences |
Research Group: | Ecology |
Research Field: | Marine and estuarine ecology (incl. marine ichthyology) |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the environmental sciences |
UTAS Author: | Swadling, KM (Associate Professor Kerrie Swadling) |
UTAS Author: | Ritz, DA (Associate Professor David Ritz) |
UTAS Author: | Osborn, JE (Dr Jon Osborn) |
UTAS Author: | Gurney, LJ (Ms Leigh Gurney) |
ID Code: | 32799 |
Year Published: | 2005 |
Web of Science® Times Cited: | 27 |
Deposited By: | Zoology |
Deposited On: | 2005-08-01 |
Last Modified: | 2011-11-21 |
Downloads: | 0 |
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