Standard and routine metabolic rates of juvenile sandbar sharks (Carcharhinus plumbeus), including the effects of body mass and acute temperature change*

Dowd, W. Wesley and Brill, Richard W. and Bushnell, Peter G. and Musick, John A. (2006) Standard and routine metabolic rates of juvenile sandbar sharks (Carcharhinus plumbeus), including the effects of body mass and acute temperature change*. Fishery Bulletin, 104, pp. 323-331.

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Abstract

Standard and routine metabolic rates (SMRs and RMRs, respectively) of juvenile sandbar sharks (Carcharhinus plumbeus) were measured over a range of body sizes (n=34) and temperatures normally associated with western Atlantic coastal nursery areas. The mean SMR Q10 (increase in metabolic rate with temperature) was 2.9 ±0.2. Heart rate decreased with increasing body mass but increased with temperature at a Q10 of 1.8−2.2. Self-paired measures of SMR and RMR were obtained for 15 individuals. Routine metabolic rate averaged 1.8 ±0.1 times the SMR and was not correlated with body mass. Assuming the maximum metabolic rate of sandbar sharks is 1.8−2.75 times the SMR (as is observed in other elasmobranch species), sandbar sharks are using between 34% and 100% of their metabolic scope just to sustain their routine continuous activity. This limitation may help to explain their slow individual and population growth rates, as well as the slow recoveries from overfishing of many shark stocks worl

Item Type: Article
Title: Standard and routine metabolic rates of juvenile sandbar sharks (Carcharhinus plumbeus), including the effects of body mass and acute temperature change*
Personal Creator/Author:
CreatorsEmail
Dowd, W. Wesley
Brill, Richard W.
Bushnell, Peter G.
Musick, John A.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 104
Page Range: pp. 323-331
Date: 2006
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8969
Depositing User: Patti M. Marraro
Date Deposited: 13 Aug 2012 15:34
Last Modified: 27 Oct 2013 12:18
URI: http://aquaticcommons.org/id/eprint/8969

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