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ザリガニの脱皮に伴なう摂餌量の変動に関する定量的解析
http://hdl.handle.net/10232/13193
http://hdl.handle.net/10232/131939efe11ce-9a42-4071-a0c2-30b6c4fab7ca
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00040498_v29_p225-238.pdf (1.6 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2015-06-10 | |||||
| タイトル | ||||||
| タイトル | ザリガニの脱皮に伴なう摂餌量の変動に関する定量的解析 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Quantitative Analysis on the Feeding Patterns of the Crayfish Relating to the Molting Cycle | |||||
| タイトル言語 | en | |||||
| 著者 |
中村, 薫
× 中村, 薫 |
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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 | It has been commonly known that the feeding habits of decapods are affected by inevitable moltings for their developments. In this report, the quantitative methods were applied to feeding experiments of individual crayfish, Procambarus clarkii, for the purpose to clarify the relation of feeds to the molting cycle. Some kinds of pellets were prepared, especially such pellets as containing much cellulose (90%) or oil (14.1%) were used for the examinations of nutritional consideration. Such item as the body weights at different stages on the molting cycle, the diurnal amount of consumed pellets, and in some cases the amount of feces were weighed. After that, the feed conversion factor of each molting cycle, the amount of consumed pellets during one cycle/ (the body wt. of postmolt-the body wt. of intermolt), was calculated. Further, the values of the molting power were introduced here as the indicatives of the degrees of water absorption at the molting time, which were calculated as (the body wt. of postmolt-the body wt. of premolt)×100/ the body wt. of premolt. As results, the diurnal amount of consumed pellets showed a distinct variation following the lapse of molting stages. Its pattern had the 1st maximum, which is also the greatest value, at the short postmolt period and the 2nd maxima were recognized in some cases before the next molting. Such greatest values correspond to the 2-3% of their body weights, and the summed feeds of the diurnal amounts during one molting cycle occupy about 23% of the body weight of intermolt. Considering with the experimental results of cellulose feeding, it suggested that the internal factor(s) of a feed-control mechanism if existed in the crayfish might participate primarily with the hemolymph concentration(s)of absorbed nutritive(s) rather than the physical factor as the capacity of the digestive tract, that is the stomach and intestinal volume. In addition, as the pellets of much contained oil gave comparatively a high efficiency to the molting power and the feed conversion factor, it seems that lipid may propose a physiological interest for the nutritional approach to the molting development. |
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| 内容記述言語 | en | |||||
| 要約 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 1. 個別飼育法でペレット飼料を給餌し,アメリカザリガニの日間摂餌量を求め摂食と脱皮成長との関係を調べた。 2. 日間摂餌量は脱皮周期上の位置により著しい変動を示した。そのパターンは脱皮後期に最大値をもつ極大点を示すこと,第2極大期を次回脱皮の前に経る場合もあること,等が明らかにされた。 3. 最大日間摂餌量はその体重の2-3%程に当たること,脱皮の1周期上の積算摂餌量は個体の大きさに関らず脱皮間期体重の約23%を占めることが算出された。 4. セルロース給餌との比較実験の結果,摂食の制御機序には胃の容積と云った機械的要因よりも血リンパの栄養分が第一義的に関与する可能性の高いことが示唆された。 5. 脂質高含有飼料の栄養試験により当該飼料は脱皮周期へは促進的効果を示さないが,脱皮時の吸水作用を高め且つ飼料係数を小さくする働きを窺わせ,脱皮成長に対して効率の 良い飼料になり得る可能性を示した。 |
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| 内容記述言語 | ja | |||||
| 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 29, p. 225-238, 発行日 1980-12-25 |
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| 作成日 | ||||||
| 日付 | 1980-12-25 | |||||
| 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 | 663 | |||||
| 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 | |||||
