{"created":"2022-01-28T01:00:18.735861+00:00","id":2005056,"links":{},"metadata":{"_buckets":{"deposit":"8a193109-cb8e-480a-965e-be14e87ebfe6"},"_deposit":{"id":"2005056","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2005056"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02005056","sets":["1642838403123","1642838403551:1642838405037"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"サンゴ礁海域貝形虫の殻に見られる捕食痕についての進化古生物学的研究","subitem_1551255648112":"ja"},{"subitem_1551255647225":"The evolutionary paleobiological study on the predation scars on the valves of reef ostracodes","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"田吹, 亮一","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Tabuki, Ryoichi","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"捕食者"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"捕食痕"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"貝形虫"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"貝形虫の殻"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Naticidae"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"ボーリング痕"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"生態"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"溶解"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"predators"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"predation scars"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"ostracodes"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"ostracode valves"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"naticids"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"drillhole"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"solution hole"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"ecology"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"科研費番号: 09640558","subitem_description_type":"Other"},{"subitem_description":"平成9年度～平成11年度科学研究費補助金(基盤研究(C)(2))研究成果報告書","subitem_description_type":"Other"},{"subitem_description":"研究概要：本研究では琉球列島の浅海性の現生および化石貝形虫の殻に見られる捕食痕の形態の特徴と貝形虫種の生態との関連を明らかにするとともに、捕食痕を形成した捕食者の特定を試みた。具体的には、現生貝形虫として石西礁および瀬底島礁池からの貝形虫遺がいを、化石貝形虫として知念砂層(更新統)からの貝形虫化石を研究対象とした。捕食痕は貝形虫の殻の外表面から内側に貫通した穴で、その3次元的形態により、「パラボラ型」、「円筒型」、「不定形」に分けられる(但し、「不定形」は定まった形態を示さない捕食痕の集合体)。又、殻に捕食痕の見られる貝形虫は、生態的には、砂底種、泥底種、葉上種に分けられる。現生貝形虫では、葉上種に多く捕食痕が見られた。ボーリング痕であるパラボラ型、円筒型の捕食痕、さらには不定形(一部)のボーリング痕の形成者として、Naticidae、Muricidaeの肉食性巻貝が想定されているが(Maddocks,1998)、これら巻貝は砂泥底にのみ生息する事から、葉上種については、他にボーリング痕の形成者を探さなければならない。不定形の捕食痕の周辺の殻表面には、削り痕、引っ掻き傷、あるいは酸により溶かされた痕と見えるものが多い。このことから、不定形の捕食痕にはボーリング痕の他、(例えば、小型の十脚類などが)割ったり、突き刺したりした痕と考えられるものも含まれる。上記の選択的捕食者による3タイプの捕食痕とは別に、ナマコ等の非選択的捕食者の消化管内での溶解、又は無機的溶解の結果、貝形虫殻の一部に空いた穴も見られる。捕食痕を残した捕食者を特定するための飼育実験を水槽内で行ったが、残念ながら、捕食者の特定に至らなかった。今後の実験の課題として、飼育容器内の水質を良好に保つこと、捕食のための口器等を手掛かりに、捕食者候補を絞っていく必要があること等が挙げられる。","subitem_description_type":"Other"},{"subitem_description":"要約（英文）:The main purpose of this study is to clear the relationships between the morphological groups of predation scars on the valves of the shallow-water ostracodes from the Ryukyu Islands, including both living and fossil, and the ecology of the ostracodes. The predation scars, which are the holes penetrating through ostracode valves, are grouped into the parabolic, cylindrical and irregular-shaped holes based on their morphology. The ostracodes bearing predation scars concist of the sandy bottom inhabitants, muddy bottom inhabitants and dwellers living on sea plants. The phytal species prevail in the recent reef ostracodes bearing predation scars. The carnivorous naticids and other gastropods have been considered to produce the drillholes such as the parabolic, cylindrical holes and part of the irregular-shaped holes. But, the carnivorous gastropods live only on sandy or muddy bottoms, and therefore, the predators attacking the phytal ostracodes remain to be inquired. The irregular-shaped holes frequently accompany the scars by scratching, scraping and solution on the outer valve surfaces around the holes. These evidences might suggest that the irregular-shaped holes include not only drillholes, but also the predation scars by cutting or piercing. Solution holes are also found in some ostracode valves. The solution holes can be due to digestive-solution or inorgamic solution. The author reared some ostracodes of a particular species with its expected selective predators in the same container in a water tank, and tried to identify the predator to produce the predation scars, but failed. It is notable for the future trials that the water in the container should be kept in a good condition, and the 'candidates' of predators should be selected in consideration of the structures of appendages relevant to predation.","subitem_description_type":"Other"},{"subitem_description":"研究報告書","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"田吹亮一"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"jpn"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/13590"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"NCID","subitem_1522646572813":"BA46537672"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2000-04","bibliographicIssueDateType":"Issued"}}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"09640558.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2005056/files/09640558.pdf"},"version_id":"f0c7ffac-45ab-48ae-8f26-519be59506b8"}]},"item_title":"サンゴ礁海域貝形虫の殻に見られる捕食痕についての進化古生物学的研究","item_type_id":"15","owner":"1","path":["1642838403123","1642838405037"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2009-12-02"},"publish_date":"2009-12-02","publish_status":"0","recid":"2005056","relation_version_is_last":true,"title":["サンゴ礁海域貝形虫の殻に見られる捕食痕についての進化古生物学的研究"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T02:28:32.304187+00:00"}