Home WORK AREAS Stock Assessment WCPO Assessment
Western and Central Pacific Ocean Assessments
Thursday, 23 September 2010 11:40

For many years, OFP conducted stock assessments for the regions tuna resources and these were reported to the Scientific Committee for Tuna and Billfish (SCTB). Since the establishment of the Western and Central Pacific Fisheries Commission (WCPFC) in 2004, OFP is now the Service Provider to the Commission and continues to undertake stock assessments and other related analyses under contract. These are presented and reviewed the Scientific Committee of the WCPFC.


Input and Result Files
Thursday, 02 September 2010 08:40

SPC routinely assesses bigeye, yellowfin, and skipjack tuna in the Western and Central Pacific, and South Pacific albacore tuna. New assessments are carried out each year and presented to the WCPFC Scientific Committee in August. The files associated with these new assessments will be placed on this website as soon as possible after 30 June of each year. 

  Albacore Bigeye Skipjack Yellowfin Sharks Striped Marlin Swordfish
2006           View  
2007       View      
2008 View
View View
2009 View View   View      
2010   View View        
2011 View View View View      
2012 View       View View  

View View
View View

2015 View




2018 View

Bigeye Tuna (Thunnus obesus)
Thursday, 23 September 2010 14:51

Drawing of a Thunnus obesusBigeye tuna is the cornerstone of the tropical longline fishery in the region, but this species is also taken as juveniles by surface gear. Catches peaked at 99,000 t in 2004 but have ranged from 67,000-77,000 t since then. Bigeye tuna stocks in the western and central Pacific Ocean were last assessed in July 2010 using data through 2009.


South Pacific Albacore Tuna (Thunnus alalunga)
Thursday, 23 September 2010 14:59

Drawing of a Thunnus alalungaAlbacore tuna comprise a discrete stock in the South Pacific with southerly migration in the early austral summer, and northerly migration during the austral winter. The stock is targeted by distant-water longline fleets of Japan, Korea, China, and Chinese Taipei, by domestic longline fleets based in several Pacific Island countries, and by a New Zealand-based troll fishery. Albacore stocks in the south Pacific Ocean were last assessed in July 2011 using data through mid-2010.


Thursday, 23 September 2010 14:48

Drawing of an Alopias pelagicusWork is currently underway to assess the status of shark stocks in the western and central Pacific Ocean under a three-year Shark Research Plan. The plan was launched in mid 2010 with preliminary assessment of shark indicators including catch, catch per unit effort, size, maturity, sex ratio and fishing effort relative to areas of highest shark density. Research coordination and fishery statistics improvement components have also been initiated.


Skipjack Tuna (Katsuwonis pelamis)
Thursday, 23 September 2010 14:57

Drawing of a Katsuwonis pelamisSkipjack are caught mainly in equatorial waters but also in the temperate North Pacific by pole and line, artisanal mixed-gear and purse seine fisheries. The catch of skipjack in the western and central Pacific in 2009 (~1.7 million t) was the highest on record. Skipjack tuna stocks in the western and central Pacific Ocean were last assessed in July 2010 using data through 2009.


Yellowfin Tuna (Thunnus albacares)
Thursday, 23 September 2010 14:32

Drawing of a Thunnus albacaresYellowfin tuna are harvested in tropical waters by purse seine, longline, pole and line, and a variety of other Indonesian and Philippine gear types. The purse seine fishery, which catches a broad range of sizes, recorded their highest yellowfin catches ever (540,000 t) in 2008 –more than four times that of the longline fishery which takes mostly adult fish. Yellowfin tuna stocks in the western and central Pacific Ocean were last assessed in July 2009.


Striped Marlin (Kajikia audax)
Wednesday, 01 August 2012 15:53

Drawing of a Kajikia audaxThe 2012 assessment of striped marlin in the south-western Pacific Ocean, that updates the previous assessment done in 2006, was presented to SC8. Besides updating the input data to December 2011, the main developments to the inputs compared to the 2006 assessment included:



Copyright © 2019 Oceanic Fisheries Programme. All Rights Reserved.
Joomla! is Free Software released under the GNU/GPL License.
   SPC Homepage | About SPC | Copyright © SPC 2010