Length-frequency compositions and weight-length relations for big-eye tuna, yellowfin tuna, and albacore [Perciformes: Scombrinae] in the Atlantic, Indian, and eastern Pacific Oceans

• Autorzy: Zhu G , Xu L. , Zhou Y. , Dai X.
• Języki publikacji: EN

Abstrakty

EN

Background. Bigeye tuna, Thunnus obesus (Lowe, 1839); yellowfin tuna, Thunnus albacares (Bonnaterre, 1788); and albacore, Thunnus alalunga (Bonnaterre, 1788), are very important species for world fisheries. It is crucial to the future existence of those economically important species that the best possible biological data on the species is provided to fisheries managers. Materials and Methods. The weight–length relations (WLRs) for bigeye tuna, yellowfin tuna, and albacore, collected in the Atlantic, Indian, and eastern Pacific oceans were studied using commonly accepted methodology. Results. Significant differences can be found from the fork length distributions and the WLRs of the above 3 tuna species and the relations of gilled-gutted and whole weight of bigeye and yellowfin tunas collected from the Atlantic, Indian, and Eastern Pacific Oceans. Significant differences of fork length distributions can be found for bigeye tuna, yellowfin tuna, and albacore from the three areas. The growth exponents (b) of bigeye tuna, yellowfin tuna, and albacore collected from the Atlantic, Indian, and eastern Pacific oceans register significant deviations from isometric value of 3. Conclusion. The date collected will be useful for the fisheries management of the three species studied.

Słowa kluczowe

PL

bigeye tuna; Thunnus obesus; yellowfin tuna; Thunnus albacares; albacore; Thunnus alalunga; fish; important species; Perciformes; Scombrinae; Atlantic Ocean; Pacific Ocean; Indian Ocean; eight-length relation; biology; physiology; ecology; fishery

• Wydawca: -
• Czasopismo: Acta Ichthyologica et Piscatoria
• Rocznik: 2008
• Tom: 38
• Numer: 2
• Opis fizyczny: p.157-161,fig.,ref.

Twórcy

autor

Zhu G

• Shanghai Ocean University, Shanghai 201306, China

autor

Xu L.

autor

Zhou Y.

autor

Dai X.

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