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Table 1.

Citrate synthase (CS), creatine phosphokinase (CPK) and lactate dehydrogenase (LDH) activities in the red and white myotomal muscle of nine shark species

Enzyme activity at 20°C*
Red muscle
White muscle
Species (common name)Fork length (cm)Mass (kg)SST(°C)CSLDHCSCPKLDHSource
Isurus oxyrinchus (shortfin mako shark) 79-168 4.8-49.5 18-21 31.6±1.8 [30] 244.3±8.0 [31] 2.10±0.05 [31] 834.3±22.7 [24] 1154.7±35.7 [31] Present study 
Lamna ditropis (salmon shark) 186-210 127-136 7-10 35.4 (32.5-38.7) [2] 249.9 (233.5-266.3) [2] 2.63 (2.1-3.2) [2]  1254.5 (1172.7-1336.4) [2] Present study 
Alopias vulpinus (common thresher shark) 73-137 6.3-43.1 18-21 27.1±2.8 [6] 201.4±21.1 [6] 1.29±0.19 [6] 642.1 (544.1-740.1) [2] 414.8±82.3 [6] Present study 
Prionace glauca (blue shark) 176-246 34-59 18-21 22.3±6.3 [4] 71.4±7.9 [4] 1.00±0.04 [4] 631.9 [1] 150.0±24.1 [4] Present study; Dickson et al.(1993) 
Sphyrna lewini (scalloped hammerhead shark) 15-46 0.5-0.8 23-25 33.9±1.1 [10] 152.9±12.4 [10] 0.87±0.04 [10]  646.6±39.7 [10] Present study 
Sphyrna tiburo (bonnethead shark) 50-60 0.47-0.75 23-28    749.8±43.9 [6]  Present study 
Rhizoprionodon terraenovae (Atlantic sharpnose shark) 42-75 0.1-0.7 23-28    790.2±41.1 [13] 924.7±52.3 [8] Present study 
Carcharhinus acronotus (Atlantic blacknose shark) 56-82 0.5-3.1 23-28    545.6 (507.8-582.3) [2] 1064.9 (985.9-1143.8) [2] Present study 
Triakis semifasciata (leopard shark) 32-62 0.1-0.8 18-20 27.1±2.1 [7] 189.4±8.2 [9] 0.81±0.08 [7]  661.2±21.5 [9] Dickson et al. (1993) 
Enzyme activity at 20°C*
Red muscle
White muscle
Species (common name)Fork length (cm)Mass (kg)SST(°C)CSLDHCSCPKLDHSource
Isurus oxyrinchus (shortfin mako shark) 79-168 4.8-49.5 18-21 31.6±1.8 [30] 244.3±8.0 [31] 2.10±0.05 [31] 834.3±22.7 [24] 1154.7±35.7 [31] Present study 
Lamna ditropis (salmon shark) 186-210 127-136 7-10 35.4 (32.5-38.7) [2] 249.9 (233.5-266.3) [2] 2.63 (2.1-3.2) [2]  1254.5 (1172.7-1336.4) [2] Present study 
Alopias vulpinus (common thresher shark) 73-137 6.3-43.1 18-21 27.1±2.8 [6] 201.4±21.1 [6] 1.29±0.19 [6] 642.1 (544.1-740.1) [2] 414.8±82.3 [6] Present study 
Prionace glauca (blue shark) 176-246 34-59 18-21 22.3±6.3 [4] 71.4±7.9 [4] 1.00±0.04 [4] 631.9 [1] 150.0±24.1 [4] Present study; Dickson et al.(1993) 
Sphyrna lewini (scalloped hammerhead shark) 15-46 0.5-0.8 23-25 33.9±1.1 [10] 152.9±12.4 [10] 0.87±0.04 [10]  646.6±39.7 [10] Present study 
Sphyrna tiburo (bonnethead shark) 50-60 0.47-0.75 23-28    749.8±43.9 [6]  Present study 
Rhizoprionodon terraenovae (Atlantic sharpnose shark) 42-75 0.1-0.7 23-28    790.2±41.1 [13] 924.7±52.3 [8] Present study 
Carcharhinus acronotus (Atlantic blacknose shark) 56-82 0.5-3.1 23-28    545.6 (507.8-582.3) [2] 1064.9 (985.9-1143.8) [2] Present study 
Triakis semifasciata (leopard shark) 32-62 0.1-0.8 18-20 27.1±2.1 [7] 189.4±8.2 [9] 0.81±0.08 [7]  661.2±21.5 [9] Dickson et al. (1993) 
*

Enzyme activities are expressed as μmol substrate converted to product per min (IU) per g wet mass of tissue. Values are means ± s.e.m. except that, when the sample size is 2, data given are means and range (in parentheses). Numbers in brackets are the number of fish analyzed.

SST, sea surface temperature.

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