Temperature effects on metabolic rate and cardiorespiratory physiology of the spiny rock lobster (Jasus edwardsii) during rest, emersion and recovery

Forgan, Leonard G, Tuckey, Nicholas PL, Cook, Denham G and Jerrett, Alistair R 2014, Temperature effects on metabolic rate and cardiorespiratory physiology of the spiny rock lobster (Jasus edwardsii) during rest, emersion and recovery, Journal of comparative physiology B, vol. 184, no. 4, pp. 437-447, doi: 10.1007/s00360-014-0820-5.

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Title Temperature effects on metabolic rate and cardiorespiratory physiology of the spiny rock lobster (Jasus edwardsii) during rest, emersion and recovery
Author(s) Forgan, Leonard G
Tuckey, Nicholas PL
Cook, Denham G
Jerrett, Alistair R
Journal name Journal of comparative physiology B
Volume number 184
Issue number 4
Start page 437
End page 447
Total pages 11
Publisher Springer
Place of publication Berlin, Germany
Publication date 2014-05
ISSN 1432-136X
Keyword(s) Animals
Basal Metabolism
Cardiovascular Physiological Phenomena
Recovery of Function
Respiratory Physiological Phenomena
Cardiorespiratory physiology
Jasus edwardsii
Metabolic rate
Summary Although spiny rock lobster (Jasus edwardsii) is a wholly sub-littoral species, they show a considerable ability to survive prolonged emersion, a fact exploited during the commercial export of this species. Yet, despite this remarkable hardiness, basic information on how this species responds physiologically to emersion is somewhat lacking. Using flow-through respirometry and electrophysiological techniques, we identified that J. edwardsii undergoes marked physiological changes during rest, emersion and recovery over a broad range of temperatures (3.7-17.8 °C). Under resting conditions, routine metabolic rates (RMR) were 22.57 ± 2.39, 9.69 ± 0.55 and 8.09 ± 0.27 mL O2 h(-1), average heart rates (Hr) were 54.72 ± 4.46, 37.68 ± 2.86 and 29.67 ± 0.59 BPM, and ventilation frequencies were 83.71 ± 5.86, 45.34 ± 2.91 and 41.62 ± 0.65 BPM at 15.0, 7.5 and 3.7 °C, respectively. Notably, the surgical implantation of electrodes elevated RMR compared with non-surgical treatments. In surgery and non-surgery groups, Q 10 was calculated to be ca. 3.0. Upon emersion, rate of oxygen consumption and Hr decreased below resting rates in a temperature-dependent manner, but, along with rate of CO2 production, increased steadily during 24-h emersion. Ventilation frequencies upon emersion showed a contrasting response and increased significantly above resting rates. When returned to flow-through sea water for recovery, elevated respiration rates provided clear evidence of an O2 debt, and near-complete recovery was observed after 17 h at both 15.0 and 7.5 °C, but close to no debt was recovered at 3.7 °C. In addition, J. edwardsii was observed to undergo marked diurnal and periodic ventilation cycles, characterised by synchronous changes in RMR, Hr and ventilation frequency.
Language eng
DOI 10.1007/s00360-014-0820-5
Field of Research 060199 Biochemistry and Cell Biology not elsewhere classified
0601 Biochemistry And Cell Biology
0606 Physiology
0608 Zoology
Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Springer-Verlag Berlin Heidelberg
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071670

Document type: Journal Article
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School of Medicine
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