Effects of water temperature on feeding and growth of juvenile marbled flounder <Emphasis Type="Italic">Pseudopleuronectes yokohamae</Emphasis> under laboratory conditions: evaluation by group- and individual-based methods |
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| Authors: | Kazushi Kusakabe Masaki Hata Jun Shoji Masakazu Hori Takeshi Tomiyama |
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| Institution: | 1.Graduate School of Biosphere Science,Hiroshima University,Higashi-Hiroshima,Japan;2.National Research Institute of Fisheries and Environment of Inland Sea, Japan Fisheries Research and Education Agency,Hatsukaichi,Japan;3.Fisheries Division,Kagawa Prefectural Government,Takamatsu,Japan |
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| Abstract: | To determine the optimal temperature for juvenile (0 year old) marbled flounder Pseudopleuronectes yokohamae, juveniles of 40–54 mm standard length were reared at six temperature conditions in the range of 8–26 °C, using group- and individual-based methods. Growth of juveniles increased from 8 to 20 °C but decreased from 20 to 26 °C, irrespective of the rearing method used. Food intake was greatest at 20 and 24 °C compared with other temperatures, while feed conversion efficiency was greater at 20 °C than 24 °C in individual rearing. Individual rearing provided more information such as individual variations in growth and food consumption, suggesting the importance of individual-based experiments for exploring the optimal temperature for fish. |
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