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実験水槽内におけるメジナの適正飼育密度
https://fra.repo.nii.ac.jp/records/2005245
https://fra.repo.nii.ac.jp/records/2005245d0612c02-b8b7-479d-b460-594b4b87403c
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-05-22 | |||||
| タイトル | ||||||
| タイトル | 実験水槽内におけるメジナの適正飼育密度 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Optimum Population Density of Largescale Blackfish, Girella punctata Gray, Feeding in an Experimental Aquarium | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
黒島, 良介
× 黒島, 良介× 高柳, 和史× 山田, 久 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In order to standardize a feeding method of marine fish used in long-term experiments on water pollution, an optimum population density of the experimental fish was investigated in this study. One-hundred-fifty 0 age largescale blackfish, Girella punctata Gray, having an average body weight of about 7.2g, were divided into 4 groups : Lot 1(15 individuals), Lot 2 (30 individuals), Lot 3(45 individuals) and Lot 4(60 individuals). They were fed in a 60 liter aquarium with running water system for 8weeks. The water quality in the aquaria (DO, pH and NH₃/NH₄⁺) and average body weight of each lot were examined weekly. At the end of the experiment, 15 individuals from each lot were picked and analyzed for the proximate composition (moisture, crude protein, crude lipid and crude ash). A weekly examination of the water quality in the aquaria revealed that the oxygen saturation, pH and ammonia concentration were all affected. In general, the percent oxygen saturation was higher at the beginning of the experiment in all 4 lots and then it decreased. It became less than 60% by the eighth week in Lot 3 ane Lot 4. The pH value was always lowest in Lot 4. On average it was about 0.2 pH unit lower than that of the original seawater. The ammonia concentration was, in general, highest in Lot 4. It reached 28.7 μM (0. 40ppm) at the seventh week. In Lot 3 the highest concentration was observed at the second week and it was 22.4 μM (0.31ppm). The corresponding un-ionized ammonia (NH₃) concentrations were 1.5 μM (21.0 ppb) and 1.4 μM (20.0 ppb), respectively. The growth rate in Lot 4 was much lower than that in the other 3 lots. The contents of crude protein, crude ash and moisture were also lowest in the individuals in Lot 4, while the crude lipid content was highest. Our study revealed that the recommended population density in a 60 liter aquarium is less than 30 individuals under our experimental conditions. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 東海区水産研究所研究報告 en : Bulletin of Tokai Regional Fisheries Research Laboratory 巻 127, p. 31-41, ページ数 11, 発行日 1989-03-28 |
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| 出版者 | ||||||
| 出版者 | 東海区水産研究所 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Tokai Regional Fisheries Research Laboratory | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0040-8859 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00156834 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | tokai_k_127_31 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010422566 | |||||
| 言語 | ja | |||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||
