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糞及び嘔吐物の分析に基づくキタオットセイ雄獣の餌料推定
https://fra.repo.nii.ac.jp/records/2002178
https://fra.repo.nii.ac.jp/records/200217802719a11-dc02-4a45-bc00-4a27f9ddf3f2
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||||||||
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| 公開日 | 2024-04-22 | |||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||
| タイトル | 糞及び嘔吐物の分析に基づくキタオットセイ雄獣の餌料推定 | |||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||
| タイトル | Estimation of Diet of Mail Northern Fur Seals (Callorhinus ursinus) Based on Analysis of Fecal and Regurgitated Materials | |||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||
| 言語 | ||||||||||||||||||||||||
| 言語 | jpn | |||||||||||||||||||||||
| キーワード | ||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||||||||
| 主題 | food habit; fecal analysis; regurgitated pellet; northern fur seal | |||||||||||||||||||||||
| 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 |
清田, 雅史
× 清田, 雅史
× 河合, 千尋
× 馬場, 徳寿
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| 抄録 | ||||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||||
| 内容記述 | Hard part remains of foods in feces (scats) and regurgitated pellets (vomits) were analyzed to estimate species and size of prey consumed by male bachelor northern fur seals (Callorhinus ursinus). Of the 107 scats and six vomits sampled at Polovina Cliffs hauling ground on St. Paul Island, Alaska, in June-August 1996, 19 scats (17.8%) and six vomits (100%) contained undigested hard parts. Otoliths of walleye pollock Theragra chalcogramma (n=47), Pacific sandfish Trichodon trichodon (n=7), flatfish (n=1), beaks of gonatid squids (four upper beaks and five lower beaks), and bones of walleye pollock, Pacific sandfish and other unidentified fish were recovered from the scats. Vomits contained pollock otoliths (n=65) and bones of pollock and salmonids. Percentage of occurrence of the major prey items in the 19 scats were 89.5% for walleye pollock, 10.5% for Pacific sandfish, and 10.5% for gonatid squids. These results coincided with the past knowledge that northern fur seals primarily prey on walleye pollock in the Bering Sea with supplementary consumption of gonatid squids and small forage fish. Vomits contained otoliths of adult walleye pollock (24-48 cm FL), contrary to scats which contained otoliths of both juvenile and adult pollock (7-43 cm FL). Number of pollock otoliths contained per one scat/vomit was larger in vomits (average 12.2) than in scats (average 3.1), and estimated number and weight of pollock consumed per one scat/vomit were also greater in vomits. No relation was found between scat weight and number of pollock otoliths contained. The difference in size and species composition of food remains between scats and vomits was supposed to result from size-selective accumulation of bulky hard parts in stomachs followed by occasional regurgetation as vomits. For accurate estimation of fur seal diet based on fecal and regurgitated materials, basic data should be collected on the excretion pattern of food particles into scats and vomits in relation to prey species and size. | |||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||
| 書誌情報 |
ja : 遠洋水産研究所研究報告 en : Bulletin of National Research Institute of Far Seas Fisheries 巻 36, p. 1-7, ページ数 7, 発行日 1999-03 |
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| 出版者 | ||||||||||||||||||||||||
| 出版者 | 遠洋水産研究所 | |||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||||
| 出版者 | The National Research Institute of Far Seas Fisheries | |||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||
| ISSN | ||||||||||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||||||||||
| 収録物識別子 | 0386-7285 | |||||||||||||||||||||||
| 書誌レコードID | ||||||||||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||||||||||
| 収録物識別子 | AN00025949 | |||||||||||||||||||||||
| 情報源 | ||||||||||||||||||||||||
| 識別子タイプ | Local | |||||||||||||||||||||||
| 関連識別子 | enyo_k_36-1 | |||||||||||||||||||||||
| 関連サイト | ||||||||||||||||||||||||
| 識別子タイプ | URI | |||||||||||||||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010591236 | |||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||||
| 関連名称 | 日本農学文献記事索引 （AgriKnowledge） | |||||||||||||||||||||||
