The current study was carried out to investigate the influence of water temperature on growth and activity of the digestive enzymes pepsin, trypsin, lipase, and amylase in common Chinese cuttlefish (Sepiella maindroni de Rochebrune). Triplicate groups of S. maindroni (weight ± SD, 4.08 ± 0.26 g; mantle length, 31.37 ± 1.04 mm) were reared at different water temperatures (16°C, 20°C, 24°C, 28°C, and 32°C). S. maindroni instantaneous growth rate (IGR), feeding rate (FR), food conversion (FC), and mantle length increase (ML) were significantly affected by water temperatures. Regression relationships between water temperature and IGR = -0.026T2 1.359T - 12.63 (n = 15, R2 = 0.995); FR = -0.064T2 3.465T - 25.69 (n = 15, R2 = 0.971), FC = -0.069T2 3.55T - 25.01 (n = 15, R2 = 0.983); and ML = -0.238T2 12.27T - 123.9 (n = 15, R2 = 0.992). The optimum temperatures for IGR, FR, FC, and ML were 26.13°C, 27.07°C, 25.72°C, and 25.78°C, respectively. Survival was greatest at 24°C and 28°C (>95%), and was significantly higher than other temperatures. Digestive enzyme activities were highest at 24°C or 28°C, and were significantly higher than at 16°C. In conclusion, the optimum temperature for growth of S. maindroni is 25–27°C based on IGR, FR, FC, and digestive enzyme activities at different temperatures.
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1 August 2011
Optimum Water Temperature for the Growth of Juvenile Common Chinese Cuttlefish, Sepiella maindroni (De Rochebrune 1884)
Shiming Peng,
Fei Yin,
Zhaohong Shi,
Peng Sun,
Jiangang Wang,
Zhenyong Liu
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Journal of Shellfish Research
Vol. 30 • No. 2
August 2011
Vol. 30 • No. 2
August 2011
common Chinese cuttlefish
digestive enzyme
growth
Sepiella maindroni
temperature