Journal article
Standard and routine metabolic rates of juvenile sandbar sharks (Carcharhinus plumbeus), including the effects of body mass and acute temperature change
Fishery bulletin (Washington, D.C.), Vol.104(3), pp.323-331
07/01/2006
Abstract
Ab s t r a c t — 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 Q 10 (increase in metabolic rate with temperature) was 2.9 ±0.2. Heart rate decreased with increasing body mass but increased with temperature at a Q 10 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 worldwide. Standard and routine metabolic rates of juvenile sandbar sharks (Carcharhinus plumbeus), including the effects of body mass and acute temperature change*
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Details
- Title
- Standard and routine metabolic rates of juvenile sandbar sharks (Carcharhinus plumbeus), including the effects of body mass and acute temperature change
- Creators
- W W Dowd - Washington State University, Biological Sciences, School ofR W BrillP G BushnellJ A Musick
- Publication Details
- Fishery bulletin (Washington, D.C.), Vol.104(3), pp.323-331
- Academic Unit
- Biological Sciences, School of
- Identifiers
- 99900591861501842
- Copyright
- Fishery Bulletin is an open access journal. All content is available without charge to the user and is in the public domain. One can read, download, copy, distribute, print, and search articles, provide links to the full texts of articles, and use articles for any lawful purpose, without asking permission from the publisher or author. In addition, there are no fees to publish with Fishery Bulletin.
- Language
- English
- Resource Type
- Journal article