{"created":"2023-06-19T11:38:27.575719+00:00","id":6151,"links":{},"metadata":{"_buckets":{"deposit":"2c9c7174-2b24-4bc7-8fe0-52c50a9a40df"},"_deposit":{"created_by":13,"id":"6151","owners":[13],"pid":{"revision_id":0,"type":"depid","value":"6151"},"status":"published"},"_oai":{"id":"oai:mie-u.repo.nii.ac.jp:00006151","sets":["420:421:481:485"]},"author_link":["13927"],"item_4_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2011-02-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"18","bibliographicPageStart":"11","bibliographicVolumeNumber":"37","bibliographic_titles":[{"bibliographic_title":"三重大学大学院生物資源学研究科紀要"}]}]},"item_4_description_14":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_4_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"To investigate the unavailability of Brachionus rotifers as an initial food for rearing preleptocephalus larvae of the Japanese eel, the ontogenetic morphological changes during the early developmental stages of eel with special reference to the organs for larval feeding were studied in captivity. Fertilized eggs were obtained from matured adults induced by hormonal treatments. The eggs were incubated at 21°C and 25°C in 33-34 psu sea water, and the newly hatched larvae were reared until the completion of yolk-absorption. Hatching of larvae began 45.0 h after the fertilization at 21°C and 31.5 h at 25°C, and terminated within 3.5 to 4.0 h after the onset of hatching. The absorption of yolk completed on 10 dph at 21°C (211.7 day-degrees) and 8 dph at 25°C (201.5day-degrees), and simultaneously four pairs of characteristic sharp-pointed larval teeth fully developed on both of upper and lower jaws. A series of histological sections of oesophageal part from 6 dph to 10 dph specimen showed that eel larvae had a characteristic thicker tissue layer and well-developed circular muscles surrounding larval gullet without mucous cells.","subitem_description_type":"Abstract"},{"subitem_description":"ホルモン処理によって人工催熟した親魚から搾出した卵及び精子を人工授精し, その受精卵から孵化仔魚を得た。孵化仔魚は卵黄吸収が終了するまで, 21°C と 25°C, 塩分 32-34, 0-数 lx の暗条件下で飼育管理し, 日々の連続標本からその外部形態及び摂餌に関わる器官の発達を観察した。孵化仔魚は, 水温 21°C では日齢 10 (211.7°C・日), 25°C では日齢 8 (201.5°C・日) で卵黄吸収を終了し, 口には上下顎それぞれ 4 対の針状幼歯が特徴的となった。この時期, HE 染色された組織切片を見ると, 咽頭部に食道壁の肥大により狭窄した部位が観察され, またその内壁には粘液細胞もほとんど発達しないため, ワムシのような固形分の嚥下の困難が想像された。","subitem_description_type":"Abstract"}]},"item_4_publisher_30":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"三重大学大学院生物資源学研究科"}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12234310","subitem_source_identifier_type":"NCID"}]},"item_4_text_18":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"ウナギプレレプトケファルス幼生の形態変化と摂餌器官の発達"}]},"item_4_text_65":{"attribute_name":"資源タイプ（三重大）","attribute_value_mlt":[{"subitem_text_value":"Departmental Bulletin Paper / 紀要論文"}]},"item_4_version_type_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yoshimatsu, Takao","creatorNameLang":"en"},{"creatorName":"吉松, 隆夫","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"13927","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-02-18"}],"displaytype":"detail","filename":"50C14404.pdf","filesize":[{"value":"1.8 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"50C14404.pdf","url":"https://mie-u.repo.nii.ac.jp/record/6151/files/50C14404.pdf"},"version_id":"78fd80f4-4a33-4d9b-a650-e9f7578619e6"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Japanese eel","subitem_subject_scheme":"Other"},{"subitem_subject":"larval rearing","subitem_subject_scheme":"Other"},{"subitem_subject":"early development","subitem_subject_scheme":"Other"},{"subitem_subject":"oesophagus","subitem_subject_scheme":"Other"},{"subitem_subject":"mucos cell","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Early development of preleptocephalus larvae of the Japanese eel in captivity with special reference to the organs for larval feeding","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Early development of preleptocephalus larvae of the Japanese eel in captivity with special reference to the organs for larval feeding","subitem_title_language":"en"}]},"item_type_id":"4","owner":"13","path":["485"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2011-02-17"},"publish_date":"2011-02-17","publish_status":"0","recid":"6151","relation_version_is_last":true,"title":["Early development of preleptocephalus larvae of the Japanese eel in captivity with special reference to the organs for larval feeding"],"weko_creator_id":"13","weko_shared_id":-1},"updated":"2023-10-10T05:16:28.394952+00:00"}