{"created":"2024-06-27T02:05:10.882422+00:00","id":2009047,"links":{},"metadata":{"_buckets":{"deposit":"857b4ffe-c3a3-428e-beba-29113d63a523"},"_deposit":{"created_by":10,"id":"2009047","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2009047"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02009047","sets":["12:14:1716955633551"]},"author_link":["3290","3300","3297"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1967-11-05","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"10","bibliographicPageEnd":"1488","bibliographicPageStart":"1479","bibliographicVolumeNumber":"12","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) 水中爆破にともなう水中衝撃圧などによる水族への影響を知る目的で，ハマチ，アコヤガイ，サザエ，アワビおよびナマコを爆源からの距離の異なる各地点に配置して，その及ばす影響について検討した。\n2) ハマチについて：St. 5(32kg/cm2) 以内に配置されたばあいには肝臓，腎臓および循環系などの主要器官のいちじるしい損傷と鰾の破裂によってほとんど即死に近い状態で斃死する。St. 6(7kg/cm2) の衝撃圧を受けた地点では外見上の損傷は全くみられなかったが，解剖の結果，肝葉周辺部組織の破裂出血のほか幽門垂などの血管充血の変化が明らかなので，その後の成育経過には何らかの影響を及ぼすものと推測される。\n3) アコヤガイについて：St. 2(29kg/cm2) 以内に配置されたばあいには貝殻腹縁部および足糸窩附近の部分が破損するものがみられたが，その後の斃死個体の出現率ならびに成長量については他の群との間に差は認められなかった。しかし，本実験は冬季の低水温期に行なわれたことから，貝はほとんど閉殻しており衝撃圧が直接軟体部へ及ばなかったとも考えられるので，この点，貝が開殻しているばあいについてさらに検討する必要があろう。\n4) サザエおよびアワビについて：St. 2(29kg/cm2) 以内に配置したサザエは螺頂ならびに貝殻螺條部の破殻したものが多く，爆源直上のアワビでは堅固と考えられる貝殻内唇の一部などが破損している。しかしながら，貝殻の破損が爆発の際に生ずる衝撃圧によるものか，貝と貝の激突によるものかは明らかにすることはできなかった。19kg/cm2 以遠のものでは外見上の損傷はみられなかった。\n5) ナマコについて：St. 1(83kg/cm2) 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