Compositional analysis and trophic level study of shrimp trawl by-catch in waters around Lvhua Island, East China Sea

Compositional analysis and trophic level study of shrimp trawl by-catch in waters around Lvhua Island, East China Sea | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Compositional analysis and trophic level study of shrimp trawl by-catch in waters around Lvhua Island, East China Sea Zhangbin Liu, Jian Zhang, Lili Chen, Jianqu Chen This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4110790/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 3 You are reading this latest preprint version Abstract Shrimp trawling is a primary fishing method in the East China Sea. Based on survey data from fishery resource monitoring vessels and on-site sampling data collected before and after the 2020 fishing moratorium in the waters around Lvhua Island, East China Sea, we employed statistical and stable isotope methods to analyze the composition and trophic levels of shrimp trawl bycatch. The results revealed diverse species in the bycatch around Lvhua Island, primarily consisting of coastal benthic organisms. The composition structure exhibited significant differences before and after the fishing moratorium, with Sebastiscus marmoratus identified as the dominant species, showing relative importance index percentages (%IRI) of 29.49% and 78.05% before and after the moratorium, respectively. Stable isotope analysis determined carbon and nitrogen isotope values for the shrimp trawl bycatch around Lvhua Island before and after the moratorium, estimating average trophic levels of 3.43 and 3.60, placing the trophic hierarchy at level 3. The distribution of carbon stable isotope ratios indicated noticeable ecological niche overlap among various biological groups in the waters around Lvhua Island. East China Sea Ÿ Bycatch Ÿ Shrimp trawls Ÿ trophic level Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editor assigned by journal 19 Mar, 2024 Submission checks completed at journal 18 Mar, 2024 First submitted to journal 15 Mar, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4110790","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":281223845,"identity":"ae32e1e3-6c54-465f-8cc6-866aaa912ab8","order_by":0,"name":"Zhangbin Liu","email":"data:image/png;base64,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","orcid":"","institution":"Kyushu University","correspondingAuthor":true,"prefix":"","firstName":"Zhangbin","middleName":"","lastName":"Liu","suffix":""},{"id":281223846,"identity":"c53a4f7a-b2f4-4b6b-8742-0c605ba8fa8f","order_by":1,"name":"Jian Zhang","email":"","orcid":"","institution":"Hokkaido University","correspondingAuthor":false,"prefix":"","firstName":"Jian","middleName":"","lastName":"Zhang","suffix":""},{"id":281223847,"identity":"941ee08b-e8f0-4490-a227-d1058750b813","order_by":2,"name":"Lili Chen","email":"","orcid":"","institution":"Pony Testing International Group Ltd","correspondingAuthor":false,"prefix":"","firstName":"Lili","middleName":"","lastName":"Chen","suffix":""},{"id":281223848,"identity":"74c5e4e1-4636-4176-a485-b95379da30d7","order_by":3,"name":"Jianqu Chen","email":"","orcid":"","institution":"Shanghai Ocean University","correspondingAuthor":false,"prefix":"","firstName":"Jianqu","middleName":"","lastName":"Chen","suffix":""}],"badges":[],"createdAt":"2024-03-16 01:29:20","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4110790/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4110790/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":53060041,"identity":"3b7c209d-4617-4f6a-9c83-7e32b235fdc8","added_by":"auto","created_at":"2024-03-20 07:22:43","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1441520,"visible":true,"origin":"","legend":"","description":"","filename":"CompositionalanalysisandtrophiclevelstudyofshrimptrawlbycatchinwatersaroundLvhuaIslandEastChinaSea.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4110790/v1_covered_54bcaa60-2bf4-4eec-9824-55b7738061cf.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Compositional analysis and trophic level study of shrimp trawl by-catch in waters around Lvhua Island, East China Sea","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"","identity":"aquaculture-international","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"","snPcode":"10499","submissionUrl":"https://submission.nature.com/new-submission/10499/3","title":"Aquaculture International","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"","reportingPortfolio":"VoR Journals","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"East China Sea \u0026#159; Bycatch \u0026#159; Shrimp trawls \u0026#159; trophic level","lastPublishedDoi":"10.21203/rs.3.rs-4110790/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4110790/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eShrimp trawling is a primary fishing method in the East China Sea. 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