{"created":"2024-06-27T02:03:12.247243+00:00","id":2008970,"links":{},"metadata":{"_buckets":{"deposit":"0417a22e-cef0-4f5b-a5a1-9ae11dfcea24"},"_deposit":{"created_by":10,"id":"2008970","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2008970"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02008970","sets":["12:14:1716955633551"]},"author_link":["3294","3295","3296"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1959-12-25","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"8","bibliographicPageEnd":"488","bibliographicPageStart":"481","bibliographicVolumeNumber":"5","bibliographic_titles":[{"bibliographic_title":"国立真珠研究所報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of the National Pearl Research Laboratory","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"1) いわゆる貝そうじの効果に関する研究の一環として，かご交換及び貝そうじ回数と附着生物の量的質的変化との関係について調べた。\n2) 英虞湾多徳島地先において第１表のような処理を行なったばあい，附着生物の各貝そうじ時における排水量の合計は，かご交換回数によっては有意の差を認めることができなかったが貝そうじの回数によっては差が認められ，その差は試験期間中貝そうじ１回以下のものと２回以上のものとの間にあった。\n3) 次に貝そうじの回数および時期による附着生物の種別の変化について，概要を述べた。そして，このうち特に量的に目ぼしかったフジツボ，アコヤガイ，カキ，カイメンおよび区分の困難であった「その他」の各貝そうじ時における排水量の合計について，同じくかご交換及び貝そうじ回数の差によるその差異の分散分析を行ない，次のような結果を得た。\ni) かご交換回数による差としては，カイメンおよびカキでは，それぞれかご交換０回と１回及び１回と２回との間で，回数が多くなるとその量が少なくなることが認められたが，フジツボでは，逆に０回と１回との間で１回の方が量も多くなることが認められた。\nii) 貝そうじ回数による差としては，０回と１回および１回と２回の間のアコヤガイ，カキ，フジツボ，ならびに貝そうじ２回と３回の間のカイメンについて，回数が多くなると量が小さくなるという，附着生物全量のばあいと同様のことが認められた。しかし，カイメンについての０回と１回の間および「その他」の同様の間には，前者と逆に貝そうじをしなかった方が量も少ないという結果が見られた。\n4) 以上のようなかご交換及び貝そうじ回数の差による附着生物の量的質的な変化は，今後の貝そうじの効果に関する研究ならびに当面の貝そうじに当って考慮されるべきであると考えられる。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"国立真珠研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"National Pearl Research 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