{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T04:26:30Z","timestamp":1787199990968,"version":"build-2736575974"},"reference-count":53,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:00:00Z","timestamp":1787011200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key R&D Program Key Special Project","award":["2024YFD2401000"],"award-info":[{"award-number":["2024YFD2401000"]}]},{"name":"CARS-Specialty Freshwater Fish Industry Technology System","award":["CARS-45"],"award-info":[{"award-number":["CARS-45"]}]},{"name":"Shanghai Science and Technology Innovation Action Plan","award":["24N12800500"],"award-info":[{"award-number":["24N12800500"]}]},{"name":"Fuzhou Science and Technology Program Project","award":["2025-ZD-012"],"award-info":[{"award-number":["2025-ZD-012"]}]},{"DOI":"10.13039\/501100012428","name":"Central Public-interest Scientific Institution Basal Research Fund, CAFS","doi-asserted-by":"crossref","award":["2023TD14"],"award-info":[{"award-number":["2023TD14"]}],"id":[{"id":"10.13039\/501100012428","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100012428","name":"Central Public-interest Scientific Institution Basal Research Fund, CAFS","doi-asserted-by":"crossref","award":["2026XT2101"],"award-info":[{"award-number":["2026XT2101"]}],"id":[{"id":"10.13039\/501100012428","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>To compare the fatty acid composition in different tissues of Anguilla japonica before and after sea entry, we analyzed the muscle, liver, and ovary of eels from the Yangtze Estuary and offshore waters, and describe the distribution patterns of various fatty acids in different tissues. Comparing different tissues, in eels from the estuary, the muscle had the highest content of EPA, the liver had the highest content of DHA, and the ovary had the highest contents of ARA. In offshore eels, the muscle had the highest contents of C16:1 and C18:1n9c; the liver had the highest content of C16:0; and the ovary had the highest contents of C18:0 and DPA3. Comparing eels before and after sea entry, the contents of C14:0, C16:0, C20:1n9 and C20:2 in the ovary of estuary eels were significantly higher than those in the offshore eels. Conversely, the contents of C18:0, C20:0, DPA3, HUFA, total n3-PUFA and n3\/n6 ratio in the ovary of offshore eels were significantly higher than those in estuary eels. Ovaries of estuarine eels showed higher proportions of saturated fatty acids, whereas ovaries of offshore eels showed higher proportions of n3-PUFA. The observed differences in ovarian fatty acid profiles may reflect the nutritional demands associated with gonadal development stages, which were determined by histological oocyte staging.<\/jats:p>","DOI":"10.3390\/ani16162568","type":"journal-article","created":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T08:08:41Z","timestamp":1787040521000},"page":"2568","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fatty Acid Profiles in Tissues of Japanese Eel (Anguilla japonica) from the Yangtze Estuary and Adjacent Offshore Waters: A Comparative Analysis"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-7787-1873","authenticated-orcid":false,"given":"Chao","family":"Song","sequence":"first","affiliation":[{"name":"National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China"},{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"},{"name":"School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China"},{"name":"College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dongyu","family":"Song","sequence":"additional","affiliation":[{"name":"National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China"},{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengyao","family":"Yang","sequence":"additional","affiliation":[{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"},{"name":"School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yijia","family":"Li","sequence":"additional","affiliation":[{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"},{"name":"College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hang","family":"Li","sequence":"additional","affiliation":[{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"},{"name":"College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiqiang","family":"Ye","sequence":"additional","affiliation":[{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"},{"name":"College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junlin","family":"Ren","sequence":"additional","affiliation":[{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2220-0412","authenticated-orcid":false,"given":"Sikai","family":"Wang","sequence":"additional","affiliation":[{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Feng","family":"Zhao","sequence":"additional","affiliation":[{"name":"East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Tesch, F.W. 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