{"created":"2023-01-06T06:09:13.669824+00:00","id":2019588,"links":{},"metadata":{"_buckets":{"deposit":"c7d854c0-0915-4065-86d4-2397deb4be98"},"_deposit":{"created_by":8,"id":"2019588","owner":"8","owners":[8],"owners_ext":{"displayname":"ryukyu_lib","username":null},"pid":{"revision_id":0,"type":"depid","value":"2019588"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02019588","sets":["1642838158423:1642838158860:1642838161909","1642838403551:1642838411479"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"ウォレス線周辺における海洋生物4種の集団遺伝構造の比較研究","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Studies on comparative genetic population structure of four marine or ganisms across the biogeographical barrier, the Wallace Line","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Hardianto, Eko","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_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"The targeted species in this study are the fiddler crab Austruca perplexa, the shallow water shrimp Acetes sibogae sibogae, the Javanese ricefish Oryziasjavanicus, and the Asian monsoon scallops Amusium pleuronectes has long been of interest to evolutionary biologist because of the high level of species diversity, its wide geographic distribution, and its economic and ecologically importance. Many of these pressures, including increasing sea-surface temperatures, ocean acidification, pollution, legal and illegal overfishing, destructive fishing methods, water diversions, and other environmental shifts have the potential to result in significant loss of specific biodiversity stock, necessitating careful management wherever possible.\nGenetic approaches are one tool that can help inform the conservation and management objectives unique to marine systems. Population genetic tools offer an opportunity to elucidate the genetic level (speciation and diversification), patterns of dispersal (connectivity and migration), and demographics (past and present), to better understand species' responses to ecological changes, anthropogenic stressors, and biogeographical \nWe compare the patterns of genetic diversity and natural population structure in the target species were investigated to gain a better understanding.of its evolutionary history. Samples were collected from Western Pacific Region, especially across the biogeographical barrier, the Wallace line. We characterized sequence variation in an mtDNA control region fragment for all targeted species and microsatellite loci for O. javanicus. The genetic diversity result showed the height haplotype diversity and low nucleotide diversity (for Au. perplexa and Am. pleuronectes), intermediate haplotype diversity and low nucleotide diversity (for Ac. s. sibogae), and both low haplotype and nucleotide diversity (for O. javanicus). Analysis of molecular variance revealed significant genetic differentiation (P < 0.0001) among all sampled sites for both genetic markers accept Am. pleuronectes. Furthermore, the mean fixation indices for both genetic markers were relatively high, indicating that dispersal potential among sites was low and that gene flow had been restricted in the past. This pattern of population structure likely reflects a short pelagic larval life and is associated with very limited dispersal potential, leading to isolation by distance, potentially allowing local adaptation to sites that augment any oceanographic, geographic, or biological barriers to gene flow. The patterns of genetic differentiation resulting from this combination of factors represent a source of evolutionary novelty.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"琉球大学"},{"subitem_1522300295150":"en","subitem_1522300316516":"University of the Ryukyus"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"eng"}]},"item_1617187087799":{"attribute_name":"Dissertation Number","attribute_value_mlt":[{"subitem_1551256171004":"甲第425号"}]},"item_1617187112279":{"attribute_name":"Degree Name","attribute_value_mlt":[{"subitem_1551256126428":"博士（学術）","subitem_1551256129013":"ja"}]},"item_1617187136212":{"attribute_name":"Date Granted","attribute_value_mlt":[{"subitem_1551256096004":"2022-09-22"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"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","date":[{"dateType":"Available","dateValue":"2023-01-06"}],"filename":"rikoken425abstract.pdf","filesize":[{"value":"1.3 MB"}],"url":{"objectType":"abstract","url":"https://u-ryukyu.repo.nii.ac.jp/record/2019588/files/rikoken425abstract.pdf"},"version_id":"21a7544c-3c31-44a2-a2b9-38fec43e5106"},{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2023-01-06"}],"filename":"rikoken425review.pdf","filesize":[{"value":"2.8 MB"}],"url":{"objectType":"other","url":"https://u-ryukyu.repo.nii.ac.jp/record/2019588/files/rikoken425review.pdf"},"version_id":"8ed7b4b3-f48b-41e5-ae33-4ae6ca0d11a3"},{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2023-01-06"}],"filename":"rikoken425dijest.pdf","filesize":[{"value":"1.7 MB"}],"url":{"objectType":"summary","url":"https://u-ryukyu.repo.nii.ac.jp/record/2019588/files/rikoken425dijest.pdf"},"version_id":"2f7b12e8-38d5-4886-93e9-57620f5bfc8b"}]},"item_1617944105607":{"attribute_name":"Degree Grantor","attribute_value_mlt":[{"subitem_1551256015892":[{"subitem_1551256027296":"18001","subitem_1551256029891":"kakenhi"}],"subitem_1551256037922":[{"subitem_1551256042287":"琉球大学","subitem_1551256047619":"ja"},{"subitem_1551256042287":"University of the Ryukyus","subitem_1551256047619":"en"}]}]},"item_title":"ウォレス線周辺における海洋生物4種の集団遺伝構造の比較研究","item_type_id":"59","owner":"8","path":["1642838161909","1642838411479"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-01-10"},"publish_date":"2023-01-10","publish_status":"0","recid":"2019588","relation_version_is_last":true,"title":["ウォレス線周辺における海洋生物4種の集団遺伝構造の比較研究"],"weko_creator_id":"8","weko_shared_id":-1},"updated":"2023-01-10T02:59:20.590084+00:00"}