Aquaculture Science
Online ISSN : 2185-0194
Print ISSN : 0371-4217
ISSN-L : 0371-4217
Original paper
Effect of water temperature on feeding and growth of the fluvial sculpin, Cottus pollux large-egg (LE) type, reared in the laboratory
Naohiko TakeshitaToru KatayamaItaru IkedaKunimasa AokiHiroyuki Yoshikawa
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JOURNAL FREE ACCESS

2017 Volume 65 Issue 1 Pages 51-60

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Abstract
Effect of water temperature on feeding and growth of the fluvial sculpin Cottus pollux LE was studied using 9 different temperatures from 10 to 26℃. At each of the 9 temperatures, six males and six females at age 1+, 2+ and 3+ were reared in aquaria for periods of 30 days. Based on values of the daily growth rate and feeding efficiency of Cottus pollux LE, we found that the suitable water temperature for growth ranges are from 14 to 20℃ at age 1+, from 14 to 18℃ at age 2+, and from 12 to 18℃ at age 3+ for males, from 12 to 22℃ at age 1+, from 12 to 20℃ at age 2+, and from 12 to 18℃ at age 3+ for females. Also, the daily growth rate and feeding efficiency for 24 and 26℃ had lower values for both sexes at age 2+ and 3+.
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© 2017 Japanese Society for Aquaculture Science
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