WEKO3
アイテム
テラピアの鰓換水
https://fra.repo.nii.ac.jp/records/2011866
https://fra.repo.nii.ac.jp/records/201186644d4124b-7ba2-47d2-abf8-4530d61ed9d2
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
fishu_k_56_187.pdf (6.3 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
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| 公開日 | 2024-10-11 | |||||||||||
| タイトル | ||||||||||||
| タイトル | テラピアの鰓換水 | |||||||||||
| 言語 | ja | |||||||||||
| タイトル | ||||||||||||
| タイトル | Ventilation in the tilapia, Oreochromis niloticus | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | jpn | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | tilapia; flow velocity; gill slit; mouth; secondary lamella; ventilation | |||||||||||
| 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 | open access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
| 著者 |
山元, 憲一
× 山元, 憲一× 半田, 岳志
WEKO
1247
× 横田, 源弘× 高橋, 孝史 |
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | In the tilapia, Oreochromis niloticus (body weight 1,100g), the ventilation properties under normoxic and hypoxic conditions were examined by continuous direct measurement of the ventilation volume, the hydraulic pressure in the buccal and opercular cavities, and the difference of the hydraulic pressure in between two cavities. The flow velocity and the mean flow passage areas at the mouth, the gill slit, and among the secondary lamellae were calculated using the measured values. And the reliability of the equation in search of the velocities was examined by directly measuring the velocity at the gill slit with the fiber-optic laser velocimeter. Under severe hypoxic condition, the ventilation volume increased at about 11 times that under normoxic from 148ml/min/kg to 1,615ml/min/kg. The mean flow velocities at the mouth and among the secondary lamellae increased at about 2 times those under normoxic condition from 13.1cm/sec to 26.5cm/sec and from 16.3em/sec to 30.8cm/sec, respectively. However, the velocity at the gill slit was almost constant in 24.6-27.2cm/sec. The mean flow passage areas under severe hypoxic condition increased severalfold those under normoxic condition : 5 times at the mouth (from 0.35cm2 to 1.69em2 ), 6 times among the secondary lamellae (from 0.16cm2 to 0.88cm2 ), 13 times at the gill slit (from 0.24cm2 to 3.13cm2 ). From the relational expression of the mean flow passage area and the mean flow velocity, the hydraulic pressures of opening were estimated to be-0.8mmH2O for buccal valve and 3.1mmH:O for opercular valve. And the hydraulic pressure in which the water begins to flow in respect of the secondary lamella was guessed to be at 0.8mmH:O. The calculated velocity values were almost equal to those measured with the fiber-optic laser velocimeter, and the stroke ventilation volume calculated with the relational expression closely agreed with that measured directly. These results highly prove that the values calculated using the relational expression were considerably reliable. |
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| 言語 | en | |||||||||||
| 書誌情報 |
ja : 水産大学校研究報告 en : Journal of National Fisheries University 巻 56, 号 2, p. 187-199, ページ数 13, 発行日 2007-12 |
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| 出版者 | ||||||||||||
| 出版者 | 水産大学校 | |||||||||||
| 言語 | ja | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | National Fisheries University | |||||||||||
| 言語 | en | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0370-9361 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN00124678 | |||||||||||
| 情報源 | ||||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | fishu_k_56_187 | |||||||||||
| 関連サイト | ||||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010761128 | |||||||||||
| 言語 | en | |||||||||||
| 関連名称 | agriknowledge | |||||||||||
