Oceanic Fisheries Programme OFP Overview Summary of fishery trends through 2011 with some indicators for 2012 Status of the stocks Main tuna stocks Other stock assessments from 2012 WCPFC ID: 431785
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Status of Tuna Fisheries and Stocks in the Western and Central Pacific Ocean
Oceanic Fisheries Programme (OFP)Slide2
Overview
Summary of fishery trends through 2011, with some indicators for 2012Status of the stocksMain tuna stocksOther stock assessments from 2012WCPFC (
and other) responsesSlide3
WCPFC Convention AreaSlide4
WCP-CA Tuna Catch by GearSlide5
WCP-CA Purse Seine FisherySlide6
PS Effort from VMS
20N – 20S, excluding domestic PS effort for ID and PHSlide7
2011 versus 2012
2011
2012
La Niña
-> El NiñoSlide8
Trends in PS CPUE into 2012
Preliminary PS catch estimate for 2012 – 1.66 million tSlide9
WCP-CA Longline FisherySlide10
WCP-CA
Longline FisherySlide11
WCP-CA
Longline FisherySlide12
WCP-CA
Longline
FisherySlide13
Status of Stocks SummaryMain tunasSlide14
Skipjack
Approximately 1.6 million tonnes in 2010, dominated by purse seine, reduction in 2011, record catch likely in 2012Stock decreasing slowly – now about 50% depletion from unexploited levelCurrent catches now about MSYOutlook: stock falling to near MSY level, 25% of unexploited levelSlide15
Yellowfin
Catch plateaued since late 1990s in spite of increasing PS and LL effortFull exploitation potential of yellowfin has been reached
Stock has decreased steadilyNow approaching 60% depletion from unexploited levelSlide16
Bigeye
Catch has levelled out over past 10 yearsMainly longline catch of adultsRecent increase in purse seine catch with FAD introduction
Biomass has declined steadilyVery high level of depletion, approaching 80%Issues with assessment indicating increased productivity post-1980Slide17
South Pacific Albacore
Fishery is mainly longline, catching adult albacoreCatch has doubled since 1995, 30% increase in 2010 over 2009Biomass has declined steadily since mid-1960s
Stock depletion due to fishing is ~ 30%current catches approaching MSYSlide18
Stock Status Overview
All four stocks at or near their lowest observed biomass levelSlide19
Stock Status OverviewSlide20
Other Species
Southwest Pacific striped marlinClose to MSY in terms of fishing mortality and biomassOceanic whitetip sharkStrongly overfished, spawning biomass <10% of unexploited level
Silky sharkSome uncertainties, but probably overfished with overfishing continuingSlide21
WCPFC ResponsesTropical tuna CMM (interim measures for 2013)
PS effort limited to:2010 levels for PNA EEZs collectively2010 or 2001-2004 average for other EEZs with >1,000 days PS effort annually in 2006-2010Other EEZs – self-nominated effort or catch limitsNo increase in effort on the high seas
FAD closure (3 mo) + 1 mo additional closure or limits on FAD set numbers by flagLongline
bigeye catch limits for DWFNsSlide22
WCPFC ResponsesSouth Pacific Albacore CMM (2010)
No increase in vessels targeting albacore south of 20⁰S from 2005 or 2000-2004 average levelsSPC members working in a FFA process on comprehensive zone-based catch limits, but agreement has stalledSlide23
WCPFC ResponsesOceanic Whitetip
CMMNo retention or landing, including finsLive release where possibleWhale Shark CMMProhibition of deliberate PS setting on schools associated with whale sharks
Where inadvertent setting occurs, take all steps to ensure safe release