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シオミズツボワムシの飼育における餌料効率と塩分濃度の関係
http://hdl.handle.net/10232/13318
http://hdl.handle.net/10232/133186d8af10b-2425-4e9b-b93e-953f50c4aa36
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00040498_v34-1_p37-43.pdf (521.8 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2015-06-08 | |||||
| タイトル | ||||||
| タイトル | シオミズツボワムシの飼育における餌料効率と塩分濃度の関係 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Effects of Salinity on Food Conversion Rate of Rotifer (Brachionus plicatilis) | |||||
| タイトル言語 | en | |||||
| 著者 |
山崎, 繁久
× 山崎, 繁久× 平田, 八郎 |
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| 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 | |||||
| 要約 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The food conversion rate is a valuable indicator for the maintenance of water quality, because food materials other than those used in rotifer production are released into the culture water. In this experiment, effects of salinity on food conversion rate are observed in order to reduce the pollution through excess food materials. At the same time, an optimal salinity level within the rotifer cultures was estimated based on their food conversion rates and tolerance to higher salinities. In Exp. I, population growth rate and food consumption rate were observed at nine salinity levels within the salinity range of 2 to 40%. The density of marine Chlorella saccharophila used as food for rotifers was maintained within the range of 2×10^<6> to 8×10^<6> cells・ml^<-1>. Culture was continued for 14 days after rotifers were acclimated to each salinity level. In Exp. II, food consumption rate and percentage of swimming individuals was measured at 0.5, 6, and 25 hours after rotifers were transferred to a higher salinity of 35%. The rotifers used were previously acclimated to : 10, 12.5, 15, 20 and 30%. Chlorella density was maintained at about 4×10^<6> cells・ml^<-1>. In Exp. I, the highest food conversion rate was obtained at 10%. The conversion rates became gradually lower as salinity increased and decreased. Sharp decrease in conversion rate from 56 to 35% was observed between 20 and 25%. In Exp. II, food consumption rates of rotifers acclimated to 20 and 30% were higher than 90% of the rotifers acclimated to 35%. However, those of rotifers at : 10, 12.5, and 15% were less than 50%. As for the percentage of swimming individuals, rates higher than 95% were observed at : 15, 20, and 30%. The salinity range between 15 and 20% was estimated as an optimal salinity level. The results of this study were aimed at direct application for the seed production of marine fishes. |
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| 内容記述言語 | en | |||||
| 収録雑誌名 |
ja : 鹿児島大学水産学部紀要 en : Memoirs of Faculty of Fisheries Kagoshima University 巻 34, 号 1, p. 37-43, 発行日 1985-12-25 |
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| 作成日 | ||||||
| 日付 | 1985-12-25 | |||||
| 日付タイプ | Issued | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| ISSN | 0453087X | |||||
| NII書誌ID（雑誌） | ||||||
| 収録物識別子タイプ | NCID | |||||
| NC ID | AN00040498 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| NDC | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 666 | |||||
| 公開者・出版者 | ||||||
| 出版者 | 鹿児島大学 | |||||
| 出版者言語 | ja | |||||
| 公開者・出版者 | ||||||
| 出版者 | Kagoshima University | |||||
| 出版者言語 | en | |||||
