Indian Ocean albacore stock structure studies by morphometric and DNA sequence methods
dc.contributor.author | Yeh, S.Y. | |
dc.contributor.author | Hui, C.F. | |
dc.contributor.author | Treng, T.D. | |
dc.contributor.author | Kuo, C.L. | |
dc.date.accessioned | 2004-08-26T14:13:30Z | |
dc.date.available | 2004-08-26T14:13:30Z | |
dc.date.issued | 1996 | |
dc.identifier.citation | IOTC Proceedings, 6th Expert Consultation on Indian Ocean Tunas. p. 258-263 | |
dc.identifier.uri | http://hdl.handle.net/1834/20 | |
dc.description | Research Group: Institute of Oceanography, National Taiwan University Taiwan | en |
dc.description.abstract | Both morphometric and DNA sequence analyses were applied in this study for throwing light on the stock structure of the albacore (Thunnus alalunga) resource in the Indian Ocean. A total of 144 albacore individuals, sampled from vessels fishing in 6 different localities of the Indian Ocean, were used for morphometric comparison. Two fisheries research surveys were carried out in 1990-1991 by the R/V Haikung, which belongs to the Taiwan Fisheries Research Institute, for collecting albacore specimens. Seven well-preserved muscle tissue specimens, removed from 7 albacores caught from 3 different localities of the Indian Ocean, were used for DNA sequence comparison. The results show that: 1) the first 2 eigen values absorb about 99% of the total within-character variability, it is thus advisable to use the first 2 canonical variables for comparison of morphometric samples; 2) the resultant mutual relationships drawn from morphometric analysis agree surprisingly well with those from the DNA sequence comparison: 3) albacore samples from the Indian Ocean can be categorised into 2 major groups -- those collected from the area west of 90 degree E and those from the area east of that longitude; and, 4) within-group heterogeneity is much less than between-group heterogeneity, no matter which method is applied. Based on the results so far obtained, the authors believe that it is possible to have 2 albacore stocks delimited by the 90 degree E longitude in the Indian Ocean. | en |
dc.format.extent | 393749 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | |
dc.publisher | IOTC | |
dc.subject | Tuna fisheries | en |
dc.subject | Stock assessment | en |
dc.subject | Stock identification | en |
dc.subject | DNA | en |
dc.subject | Thunnus alalunga | en |
dc.subject | ISW, West Indian Ocean | en |
dc.title | Indian Ocean albacore stock structure studies by morphometric and DNA sequence methods | en |
dc.type | Proceedings Paper | |
dc.bibliographicCitation.conferencedate | 1996 | |
dc.bibliographicCitation.conferencename | 6th Expert Consultation on Indian Ocean Tunas - IOTC | en |
dc.bibliographicCitation.conferenceplace | Colombo, Sri Lanka | |
dc.bibliographicCitation.endpage | 263 | |
dc.bibliographicCitation.stpage | 258 | |
dc.bibliographicCitation.title | IOTC Proceedings, 6th Expert Consultation on Indian Ocean Tunas | en |
dc.description.status | Published | en |
refterms.dateFOA | 2021-01-30T18:47:33Z |
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Proceedings - Expert Consultation on Indian Ocean Tunas [36]
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AfReMaS [433]
African Register of Marine Species