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Effects of temperature on food consumption, growth and oxygen consumption of freshwater prawn Macrobrachium rosenbergii (de Man 1879) postlarvae
Author(s) -
Niu Cuijuan,
Lee Daxong,
Goshima Seiji,
Nakao Shigeru
Publication year - 2003
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1046/j.1365-2109.2003.00845.x
Subject(s) - macrobrachium rosenbergii , prawn , zoology , biology , food consumption , oxygen , growth rate , body weight , fishery , food science , consumption (sociology) , chemistry , endocrinology , agricultural economics , social science , sociology , economics , geometry , mathematics , organic chemistry
Effects of temperature on food consumption, growth and oxygen consumption were estimated for the freshwater prawn Macrobrachium rosenbergii postlarvae at 23 °C, 28 °C and 33 °C in the laboratory. The results showed that the animal's initial body weight had a close linear relationship with food consumption and growth. Food consumption increased directly with temperature. Consumption rates ( C ; mg day −1 ind −1 ) of the 28 °C and 33 °C groups were much higher than that of the 23 °C group ( P < 0.001), and the 33 °C group's consumption rate was higher than that of the 28 °C group ( P < 0.05). The relationship of food consumption with temperature and initial body weight ( W ; mg) could be described as: C = 0.0679 W + 0.185 t − 3.17. Growth increased significantly with increased temperature. The relationship among specific growth rate, temperature and initial body weight was as follows: SGR = −0.110 W + 0.213 t + 0.176. However, temperature showed no effect on growth efficiency. Oxygen consumption increased significantly with temperature ( P < 0.01). The weight‐specific oxygen consumption rates (mg O 2 g −1 h −1 ) at 23 °C, 28 °C and 33 °C were 0.83, 1.16 and 1.49 mg O 2 g −1 h −1 for 61.92 mg M. rosenbergii.