New information on age composition and length-weight relationship of bluefin tuna, Thunnus thynnus, in the southwestern North Pacific [Taiwan]
SUMMARY : New information on catch‐at‐age composition and length–weight relationships is presented for Pacific northern bluefin tuna caught by Taiwanese small‐scale longliners in the southwestern North Pacific. The fork length – eviscerated weight relationship of Pacific northern bluefin tuna, Thunn...
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| Veröffentlicht in: | Fisheries science 2000-06, Vol.66 (3), p.485-493 |
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| container_title | Fisheries science |
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| creator | Hsu, C.C. (National Taiwan Univ., Taipei) Liu, H.C Wu, C.L Huang, S.T Liao, H.K |
| description | SUMMARY
:
New information on catch‐at‐age composition and length–weight relationships is presented for Pacific northern bluefin tuna caught by Taiwanese small‐scale longliners in the southwestern North Pacific. The fork length – eviscerated weight relationship of Pacific northern bluefin tuna, Thunnus thynnus, caught off southwestern North Pacific (off the Taiwan coast) was determined and compared with relationships previously reported by various studies for different waters. The best representative of this relationship is W = 0.000023058L2.9342, where W is the eviscerated weight (kg) and L the fork length (cm). The eviscerated weights estimated from this relationship were multiplied by a scaling factor of 1.112 to obtain the estimated round weight. The visual comparison of weight‐at‐length showed that there were almost no differences between the relationships previously reported for the northwestern Pacific, the Sea of Japan and the present study. This indicated that Pacific northern bluefin tuna from those three waters could be of the same stock. Further assessment studies should combine information from those waters. |
| doi_str_mv | 10.1046/j.1444-2906.2000.00078.x |
| format | Article |
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:
New information on catch‐at‐age composition and length–weight relationships is presented for Pacific northern bluefin tuna caught by Taiwanese small‐scale longliners in the southwestern North Pacific. The fork length – eviscerated weight relationship of Pacific northern bluefin tuna, Thunnus thynnus, caught off southwestern North Pacific (off the Taiwan coast) was determined and compared with relationships previously reported by various studies for different waters. The best representative of this relationship is W = 0.000023058L2.9342, where W is the eviscerated weight (kg) and L the fork length (cm). The eviscerated weights estimated from this relationship were multiplied by a scaling factor of 1.112 to obtain the estimated round weight. The visual comparison of weight‐at‐length showed that there were almost no differences between the relationships previously reported for the northwestern Pacific, the Sea of Japan and the present study. This indicated that Pacific northern bluefin tuna from those three waters could be of the same stock. Further assessment studies should combine information from those waters.</description><identifier>ISSN: 0919-9268</identifier><identifier>EISSN: 1444-2906</identifier><identifier>DOI: 10.1046/j.1444-2906.2000.00078.x</identifier><language>eng</language><publisher>Melbourne, Australia: Blackwell Science Pty</publisher><subject>AGE STRUCTURE ; BODY MEASUREMENTS ; length–weight relationship ; likelihood ratio test ; Marine ; northern bluefin tuna ; NORTHWEST PACIFIC ; TAIWAN ; THUNNUS ; Thunnus thynnus</subject><ispartof>Fisheries science, 2000-06, Vol.66 (3), p.485-493</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6048-8cecae34b16778ce878cf639ef3e086b9dcb66c28be2c50857a66af56e59fc3d3</citedby><cites>FETCH-LOGICAL-c6048-8cecae34b16778ce878cf639ef3e086b9dcb66c28be2c50857a66af56e59fc3d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1046%2Fj.1444-2906.2000.00078.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1046%2Fj.1444-2906.2000.00078.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Hsu, C.C. (National Taiwan Univ., Taipei)</creatorcontrib><creatorcontrib>Liu, H.C</creatorcontrib><creatorcontrib>Wu, C.L</creatorcontrib><creatorcontrib>Huang, S.T</creatorcontrib><creatorcontrib>Liao, H.K</creatorcontrib><title>New information on age composition and length-weight relationship of bluefin tuna, Thunnus thynnus, in the southwestern North Pacific [Taiwan]</title><title>Fisheries science</title><description>SUMMARY
:
New information on catch‐at‐age composition and length–weight relationships is presented for Pacific northern bluefin tuna caught by Taiwanese small‐scale longliners in the southwestern North Pacific. The fork length – eviscerated weight relationship of Pacific northern bluefin tuna, Thunnus thynnus, caught off southwestern North Pacific (off the Taiwan coast) was determined and compared with relationships previously reported by various studies for different waters. The best representative of this relationship is W = 0.000023058L2.9342, where W is the eviscerated weight (kg) and L the fork length (cm). The eviscerated weights estimated from this relationship were multiplied by a scaling factor of 1.112 to obtain the estimated round weight. The visual comparison of weight‐at‐length showed that there were almost no differences between the relationships previously reported for the northwestern Pacific, the Sea of Japan and the present study. This indicated that Pacific northern bluefin tuna from those three waters could be of the same stock. Further assessment studies should combine information from those waters.</description><subject>AGE STRUCTURE</subject><subject>BODY MEASUREMENTS</subject><subject>length–weight relationship</subject><subject>likelihood ratio test</subject><subject>Marine</subject><subject>northern bluefin tuna</subject><subject>NORTHWEST PACIFIC</subject><subject>TAIWAN</subject><subject>THUNNUS</subject><subject>Thunnus thynnus</subject><issn>0919-9268</issn><issn>1444-2906</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNqNkdtKxDAQhoMouB4eQciVV7ampzTFKxGPiAquVyIhzU62WbrJmrTUfQmf2XRXvBaSDJn5_pCZHyGckDghOT1fxEme51FaERqnhJA47JLFXzto8lfYRRNSJVVUpZTtowPvFwGiBWET9P0EA9ZGWbcUnbYGhyXmgKVdrqzXm5QwM9yCmXdNNICeNx120G5o3-gVtgrXbQ9KG9z1RpzhadMb03vcNesxnuGx0gD2tu-aAXwHzuAn67oGvwiplZb4fSr0IMzHEdpTovVw_BsP0dvN9fTqLnp8vr2_unyMJCU5i5gEKSDL64SWZbiwcCiaVaAyIIzW1UzWlMqU1ZDK0GdRCkqFKigUlZLZLDtEp9t3V85-9uFLfKm9hLYVBmzveVLSvGBVEUC2BaWz3jtQfOX0Urg1TwgfDeALPs6Zj3PmowF8YwD_CtKLrXTQLaz_reM3968lC-qTrVoJy8Xcac8fXgKXEJKSNM9-AJEdmFo</recordid><startdate>200006</startdate><enddate>200006</enddate><creator>Hsu, C.C. (National Taiwan Univ., Taipei)</creator><creator>Liu, H.C</creator><creator>Wu, C.L</creator><creator>Huang, S.T</creator><creator>Liao, H.K</creator><general>Blackwell Science Pty</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>200006</creationdate><title>New information on age composition and length-weight relationship of bluefin tuna, Thunnus thynnus, in the southwestern North Pacific [Taiwan]</title><author>Hsu, C.C. (National Taiwan Univ., Taipei) ; Liu, H.C ; Wu, C.L ; Huang, S.T ; Liao, H.K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c6048-8cecae34b16778ce878cf639ef3e086b9dcb66c28be2c50857a66af56e59fc3d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>AGE STRUCTURE</topic><topic>BODY MEASUREMENTS</topic><topic>length–weight relationship</topic><topic>likelihood ratio test</topic><topic>Marine</topic><topic>northern bluefin tuna</topic><topic>NORTHWEST PACIFIC</topic><topic>TAIWAN</topic><topic>THUNNUS</topic><topic>Thunnus thynnus</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hsu, C.C. (National Taiwan Univ., Taipei)</creatorcontrib><creatorcontrib>Liu, H.C</creatorcontrib><creatorcontrib>Wu, C.L</creatorcontrib><creatorcontrib>Huang, S.T</creatorcontrib><creatorcontrib>Liao, H.K</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Fisheries science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hsu, C.C. (National Taiwan Univ., Taipei)</au><au>Liu, H.C</au><au>Wu, C.L</au><au>Huang, S.T</au><au>Liao, H.K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>New information on age composition and length-weight relationship of bluefin tuna, Thunnus thynnus, in the southwestern North Pacific [Taiwan]</atitle><jtitle>Fisheries science</jtitle><date>2000-06</date><risdate>2000</risdate><volume>66</volume><issue>3</issue><spage>485</spage><epage>493</epage><pages>485-493</pages><issn>0919-9268</issn><eissn>1444-2906</eissn><abstract>SUMMARY
:
New information on catch‐at‐age composition and length–weight relationships is presented for Pacific northern bluefin tuna caught by Taiwanese small‐scale longliners in the southwestern North Pacific. The fork length – eviscerated weight relationship of Pacific northern bluefin tuna, Thunnus thynnus, caught off southwestern North Pacific (off the Taiwan coast) was determined and compared with relationships previously reported by various studies for different waters. The best representative of this relationship is W = 0.000023058L2.9342, where W is the eviscerated weight (kg) and L the fork length (cm). The eviscerated weights estimated from this relationship were multiplied by a scaling factor of 1.112 to obtain the estimated round weight. The visual comparison of weight‐at‐length showed that there were almost no differences between the relationships previously reported for the northwestern Pacific, the Sea of Japan and the present study. This indicated that Pacific northern bluefin tuna from those three waters could be of the same stock. Further assessment studies should combine information from those waters.</abstract><cop>Melbourne, Australia</cop><pub>Blackwell Science Pty</pub><doi>10.1046/j.1444-2906.2000.00078.x</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0919-9268 |
| ispartof | Fisheries science, 2000-06, Vol.66 (3), p.485-493 |
| issn | 0919-9268 1444-2906 |
| language | eng |
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| source | J-STAGE Free; Wiley Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | AGE STRUCTURE BODY MEASUREMENTS length–weight relationship likelihood ratio test Marine northern bluefin tuna NORTHWEST PACIFIC TAIWAN THUNNUS Thunnus thynnus |
| title | New information on age composition and length-weight relationship of bluefin tuna, Thunnus thynnus, in the southwestern North Pacific [Taiwan] |
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