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Effects of water temperature on feeding and growth of the catadromous fourspine sculpin, Rheopresbe kazika, reared in the laboratory

Journal of National Fisheries University Volume 72 Issue 1 Page 11-17
published_at 2023-12
72-1-11-17.pdf
[fulltext] 1.64 MB
Title
飼育水温がカマキリ当歳魚の摂餌と成長に及ぼす影響
Effects of water temperature on feeding and growth of the catadromous fourspine sculpin, Rheopresbe kazika, reared in the laboratory
Abstract
Effects of water temperature on feeding and growth of the 0-year-old catadromous fourspine sculpin Rheopresbe kazika were studied using 8 different temperatures from 12 to 26℃ for 60 days. At each of the 8 temperatures, 20 fish were reared in aquaria. In the ranges of 16 to 24℃ and 22 to 26℃ the daily growth rate and daily feeding rate, respectively, were higher than the others. Also, the optimal water temperatures were calculated 19.6℃ for daily growth rate and 25.5℃ for daily feeding rate. The optimal water temperature for daily growth rate was lower than that for daily feeding rate. While, feeding efficiency were showed high values in the range from 12 to 22℃. These results indicate that the optimal water temperature range is from 16 to 22℃, and that a water temperature of 12℃ is too low and above 24℃ is too high for sustainable growth during culture of R.kazika.
Creators Takeshita Naohiko
Creators Ishimaru Mami
Source Identifiers [PISSN] 0370-9361
Creator Keywords
Rheopresbe kazika Effect of water temperature Feeding Growth
Languages jpn
Resource Type departmental bulletin paper
Publishers National Fisheries University
Date Issued 2023-12
File Version Version of Record
Access Rights open access
Relations
[ISSN]0370-9361