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Metabolic physiology of the southeastern USA crayfish, Cambarus latimanus (LeConte), in response to different temperatures
Meade M, White L, Zettili R, Meade M, Almani S and Qureshi A 
Published Online: 12/31/2015
Abstract
Variable crayfish, Cambarus latimanus (LeConte), were collected and acclimated to four temperatures, 15, 20, 25, and 30°C. Following a two-week acclimation period, mean standard metabolic rates (SMR), as determined using oxygen consumption rates, were measured using an intermittent-flow, closed-loop respirometer. For ~10g mean weight C. latimanus, mean weight specific oxygen consumption rates (MO2) at 15, 20, 25, and 30°C were 73.4 ± 0.18, 81.6 ± 0.10, 103 ± 0.11, and 205 ± 0.12 mg O2·kg-1·h-1 (±SE), respectively. Calculated Q10 values of 1.25, 1.61, and 3.92 for the change in metabolic rate from 15 – 20°C, 20 – 25°C, and 25 – 30°C suggest the crayfish were responding normally to temperature increases and were metabolically stressed when temperatures increased above 25°C. Daily caloric energy budgets of 58 (15°C), 65 (20°C), 82 (25°C), and 164 (30°C) calories·day-1 were estimated for crayfishes using SMR data and suggested that crayfish standard (resting) energy requirements nearly tripled when acclimated to 15 versus 30°C. Overall, these data suggest that increased temperatures have substantial effects on C. latimanus energy demands which may reduce potential growth and reproduction.
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How to Cite
Meade M, White L, Zettili R, Meade M, Almani S and Qureshi A. (2015). Metabolic physiology of the southeastern USA crayfish, Cambarus latimanus (LeConte), in response to different temperatures. Freshwater Crayfish 21(1):171-177. doi: 10.5869/fc.2015.v21-1.171
Author Information
Mark Meade,* Biology, Jacksonville State University, 700 Pelham Road North, Jacksonville, Alabama, USA36265. E-mail: mmeade@jsu.edu
Lindsay White, Biology, Jacksonville State University, 700 Pelham Road North, Jacksonville, Alabama, USA36265. E-mail: mmeade@jsu.edu
Rahim Zettili, Biology, Jacksonville State University, 700 Pelham Road North, Jacksonville, Alabama, USA36265. E-mail: mmeade@jsu.edu
Megan Meade, Science, IQRA Math and Science Academy, 1821 McCall Drive, Anniston, Alabama, USA36207. E-mail: memeade@jsu.edu
Saad Almani, Science, IQRA Math and Science Academy, 1821 McCall Drive, Anniston, Alabama, USA36207. E-mail: memeade@jsu.edu
Abdurehman Qureshi, Science, IQRA Math and Science Academy, 1821 McCall Drive, Anniston, Alabama, USA36207. E-mail: memeade@jsu.edu
Corresponding Author indicated by an *.
Publication History
Manuscript Submitted: 6/10/2015
Manuscript Accepted: 12/8/2015
Published Online: 12/31/2015
Published in Print: 12/31/2015
Funding Information
No specific funding statement is available for this article.