eCite Digital Repository
Effects of lower jaw deformity on swimming performance and recovery from exhaustive exercise in triploid and diploid Atlantic salmon
Citation
Lijalad, M and Powell, MD, Effects of lower jaw deformity on swimming performance and recovery from exhaustive exercise in triploid and diploid Atlantic salmon , Aquaculture: An International Journal Devoted to Fundamental Aquatic Food Resources, 290 pp. 145-154. ISSN 0044-8486 (2009) [Refereed Article]
DOI: doi:10.1016/j.aquaculture.2009.01.039
Abstract
a b s t r a c t
Article history:
Received 16 May 2008
Received in revised form 19 January 2009
Accepted 22 January 2009
Keywords:
Lower jaw deformity
Atlantic salmon
Ploidy
Swim performance
Metabolic rate
Lower jaw deformity is a common deformity in cultured triploid Atlantic salmon in Tasmania. However, the
physiological effects of this deformity have not been studied. Swimming performance and anaerobic capacity
were assessed in sibling diploid, triploid and triploid with lower jaw deformity all female Atlantic salmon.
There were no significant differences in the critical swimming speed attained by any of the groups of salmon.
However, a second swim challenge after a recovery period of 45 min revealed that triploid salmon with lower
jaw deformity were not capable of attaining the same critical swimming speed as in their first test. There was
a positive correlation between the severity of the lower jaw deformity and the extent to which recovery
between swimming bouts was compromised. Oxygen consumption rates (both routine and maximal) as
determined after a bout of exhaustive exercise were identical between all groups of salmon but triploid and
triploid with lower jaw deformity fish had a lower excess post-exercise oxygen consumption and recovered
their oxygen consumption to pre-exercise levels quicker than diploid fish. This suggests that the aerobic
capacity of the fish was not necessarily adversely affected by ploidy or LJD but that but that recovery from
exhaustion was affected by jaw deformity. In exhausted fish, triploids and in particular those with skeletal
deformity, recovery of EPOC was quicker than with diploids potentially as a result of either not accruing the
same oxygen debt or else having the ability to repay the oxygen debt more quickly.
© 2009 Elsevier B.V. All rights reserved
Item Details
Item Type: | Refereed Article |
---|---|
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Aquaculture |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - aquaculture |
Objective Field: | Aquaculture fin fish (excl. tuna) |
UTAS Author: | Lijalad, M (Ms Maite Lijalad) |
UTAS Author: | Powell, MD (Dr Mark Powell) |
ID Code: | 61795 |
Year Published: | 2009 |
Web of Science® Times Cited: | 56 |
Deposited By: | NC Marine Conservation and Resource Sustainability |
Deposited On: | 2010-03-05 |
Last Modified: | 2010-04-23 |
Downloads: | 0 |
Repository Staff Only: item control page