{"created":"2025-02-06T07:29:29.245809+00:00","id":2013222,"links":{},"metadata":{"_buckets":{"deposit":"b96fe764-97a1-498e-a62e-a9465e0611b8"},"_deposit":{"created_by":10,"id":"2013222","owner":"92","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2013222"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02013222","sets":["15"]},"author_link":["578"],"control_number":"2013222","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2024-11-15","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"13","bibliographicPageEnd":"1289","bibliographicPageStart":"1277","bibliographicVolumeNumber":"107","bibliographic_titles":[{"bibliographic_title":"Environmental Biology of Fishes","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Snappers (family Lutjanidae) are main fishery target species and some fish species in this family form spawning aggregations on coral reefs. This study aimed to clarify the ecological characteristics of fish aggregation of Lutjanus fulvus: (1) lunar-phase periodicity of aggregation formation, (2) seasonal consistency of the aggregation site, (3) differences in fish density between inside and outside the aggregation site, (4) gonad development of fish individuals inside the aggregation site, (5) frequency distribution of size and age of fish individuals at the aggregation site, and (6) to determine if the aggregation is a spawning aggregation. Time-lapse still photography and data plotted with a correlogram revealed that fish aggregations were observed only around the 20th day of the moon. Underwater observations revealed greater fish density (42–2042 individuals per 600 m × 5 m) between April and September. Plotting fine-scale fish spatial distributions revealed consistent spatial patterns from May to September. The fish density inside the aggregation site was about 7960.5-fold greater than that outside the aggregation site. Most females inside the aggregation site had hydrated eggs. The average fork length and age of fish individuals inside the aggregation site were 241.8 mm and 12.2 years for males and 247.8 mm and 13.4 years for females, respectively. This study revealed that the aggregation of L. fulvus on an Okinawan coral reef could be regarded as spawning aggregation. The results can provide insights into the precise setting position of marine protected area to effectively protect the spawning ground of L. fulvus.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"springer","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1007/s10641-024-01638-8","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"ja","subitem_relation_name_text":"水産技術研究所 環境・応用部門 沿岸生態システム部 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fulvus;  Marine protected area; Okinawan coral reef","subitem_subject_language":"en","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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Spawning aggregation of blacktail snapper (Lutjanus fulvus) in an Okinawan coral reef: lunar-phase periodicity of aggregation formation, seasonal consistency in fish spatial distribution, and fish size and age frequency in the aggregation site","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Spawning aggregation of blacktail snapper (Lutjanus fulvus) in an Okinawan coral reef: lunar-phase periodicity of aggregation formation, seasonal consistency in fish spatial distribution, and fish size and age frequency in the aggregation site","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"10","path":["15"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-02-06"},"publish_date":"2025-02-06","publish_status":"0","recid":"2013222","relation_version_is_last":true,"title":["Spawning aggregation of blacktail snapper (Lutjanus fulvus) in an Okinawan coral reef: lunar-phase periodicity of aggregation formation, seasonal consistency in fish spatial distribution, and fish size and age frequency in the aggregation site"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2025-03-21T07:18:54.648858+00:00"}