scholarly journals CATCH AND EFFORT INFORMATION FOR ALBACORE TUNA (THUNNUS ALALUNGA) BY INDONESIA’S LONGLINERS OPERATING FROM BENOA

2013 ◽  
Vol 19 (1) ◽  
pp. 33
Author(s):  
Lilis Sadiyah ◽  
Budi Nugraha ◽  
Agustinus Anung Widodo
Keyword(s):  
Albacore Tuna ◽  
Long Line ◽  
Thunnus Alalunga ◽  
Catch Rates ◽  
Tuna Fisheries ◽  
Research Institute

Albacore (<em>Thunnus alalunga</em> - ALB) catch was the second highest tuna landed at Benoa Fishing Port and they are mostly landed as frozen bycatch. This paper attempts to provide information on ALB catch and effort trends by Benoa based longline vessels collected by the Benoa Port-based Catch Monitoring and Scientific Observer Programs. The ALB catch landed at the Benoa Fishing Port in 2010 was estimated by the Research Institute for Tuna Fisheries (RITF) to be about 983.14 tons, whereas based on the Indonesian Tuna Long Line Association (ATLI), ALB catch landed at Benoa Fishing Port in 2010 amounted of 2,715.42 tons. This discrepancy was due to sampling for frozen catch (including ALB) could not be conducted in some companies and also there was one company that sell their catch direct to the collector. The observed longline sets were concentrated within the area between 10° - 20°S and 105° - 120°E. Since 2008, the observed setting positions have never extended to south of 20°S. The higher catch rates of ALB were in area south of 15°S.

scholarly journals Connectivity and population structure of albacore tuna across southeast Atlantic and southwest Indian Oceans inferred from multidisciplinary methodology

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Natacha Nikolic ◽  
Iratxe Montes ◽  
Maxime Lalire ◽  
Alexis Puech ◽  
Nathalie Bodin ◽  
...  
Keyword(s):  
Population Structure ◽  
South African ◽  
Species Dispersal ◽  
Commercial Catch ◽  
Albacore Tuna ◽  
Particle Drift ◽  
Dispersal Potential ◽  
Thunnus Alalunga ◽  
Tuna Fisheries ◽  
Drift Models

Abstract Albacore tuna (Thunnus alalunga) is an important target of tuna fisheries in the Atlantic and Indian Oceans. The commercial catch of albacore is the highest globally among all temperate tuna species, contributing around 6% in weight to global tuna catches over the last decade. The accurate assessment and management of this heavily exploited resource requires a robust understanding of the species’ biology and of the pattern of connectivity among oceanic regions, yet Indian Ocean albacore population dynamics remain poorly understood and its level of connectivity with the Atlantic Ocean population is uncertain. We analysed morphometrics and genetics of albacore (n = 1,874) in the southwest Indian (SWIO) and southeast Atlantic (SEAO) Oceans to investigate the connectivity and population structure. Furthermore, we examined the species’ dispersal potential by modelling particle drift through major oceanographic features. Males appear larger than females, except in South African waters, yet the length–weight relationship only showed significant male–female difference in one region (east of Madagascar and Reunion waters). The present study produced a genetic differentiation between the southeast Atlantic and southwest Indian Oceans, supporting their demographic independence. The particle drift models suggested dispersal potential of early life stages from SWIO to SEAO and adult or sub-adult migration from SEAO to SWIO.

How important are coastal fronts to albacore tuna (Thunnus alalunga) habitat in the Northeast Pacific Ocean?

2017 ◽  
Vol 150 ◽  
pp. 62-71 ◽  
Author(s):  
Karen Nieto ◽  
Yi Xu ◽  
Steven L.H. Teo ◽  
Sam McClatchie ◽  
John Holmes
Keyword(s):  
Pacific Ocean ◽  
Northeast Pacific ◽  
Albacore Tuna ◽  
Thunnus Alalunga ◽  
Northeast Pacific Ocean

Partitioning of protease from stomach of albacore tuna (Thunnus alalunga) by aqueous two-phase systems

2009 ◽  
Vol 44 (4) ◽  
pp. 471-476 ◽  
Author(s):  
Sitthipong Nalinanon ◽  
Soottawat Benjakul ◽  
Wonnop Visessanguan ◽  
Hideki Kishimura
Keyword(s):  
Two Phase ◽  
Albacore Tuna ◽  
Aqueous Two Phase Systems ◽  
Thunnus Alalunga ◽  
Phase Systems

scholarly journals Reproductive Biology of Albacore Tuna (Thunnus alalunga) in the Western Indian Ocean

PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0168605 ◽  
Author(s):  
Zahirah Dhurmeea ◽  
Iker Zudaire ◽  
Emmanuel Chassot ◽  
Maria Cedras ◽  
Natacha Nikolic ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Reproductive Biology ◽  
Western Indian Ocean ◽  
Albacore Tuna ◽  
Thunnus Alalunga

New insights to behaviour of North Atlantic albacore tuna (Thunnus alalunga) observed with pop-up satellite archival tags

2014 ◽  
Vol 150 ◽  
pp. 89-99 ◽  
Author(s):  
Ronan Cosgrove ◽  
Igor Arregui ◽  
Haritz Arrizabalaga ◽  
Nicolas Goni ◽  
Michael Sheridan
Keyword(s):  
North Atlantic ◽  
Albacore Tuna ◽  
Archival Tags ◽  
Thunnus Alalunga

Major trypsin like-serine proteinases from albacore tuna (Thunnus alalunga) spleen: Biochemical characterization and the effect of extraction media

2016 ◽  
Vol 41 (2) ◽  
pp. e12323 ◽  
Author(s):  
Tanchanok Poonsin ◽  
Pakteera Sripokar ◽  
Soottawat Benjakul ◽  
Benjamin K. Simpson ◽  
Wonnop Visessanguan ◽  
...  
Keyword(s):  
Biochemical Characterization ◽  
Serine Proteinases ◽  
Albacore Tuna ◽  
Thunnus Alalunga

scholarly journals Tuna Fisheries Conservation and Management in the Pacific Islands Region

2021 ◽  
Vol 6 (2) ◽  
pp. 192-220
Author(s):  
Quentin Hanich ◽  
Myeonghwa Jung ◽  
Alice McDonald ◽  
Seoyeon Oh ◽  
Sukran Moon ◽  
...  
Keyword(s):  
Pacific Islands ◽  
Pacific Island ◽  
Central Pacific ◽  
Fishing Fleet ◽  
Fishing Vessels ◽  
Tuna Fishing ◽  
Catch Rates ◽  
Tuna Fisheries ◽  
Distant Water Fishing ◽  
High Seas

Abstract The Korean tuna fishing fleet has a long history of participation in the tuna fisheries of the Western and Central Pacific Ocean (wcpo), the largest tuna fisheries in the world. As one of the largest distant water fishing fleets operating in the wcpo, Korea has a strong interest in maintaining access to both eez s and the high seas, and ensuring sustainability of the region’s tuna stocks. The regulatory environment for tuna fisheries in the wcpo is complex and multi-layered, with regional, sub-regional and national legislation, regulation and policies all affecting tuna fishing vessels and operations. Management of tuna fisheries within Pacific Island eez s is increasingly being tightened, including through the introduction of zone-based management approaches, and Pacific Island countries are also advocating for improved management of tuna fishing in the high seas. While all four primary tuna species in the wcpo are currently considered healthy, catch rates and economic conditions in the southern and tropical longline fisheries are in decline and catch reductions will be necessary to improve catch rates and increase economic returns for longline vessels. Within this context, the Korean distant water fishing fleet will need to strengthen engagement and cooperation with Pacific island States in order to maintain their competitiveness.

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