Panel 4: Other species SWO Swordfish BUM WHM SAI Billfish SMT - PDF document

11/11/2015 Panel 4: Other species SWO Swordfish BUM WHM SAI Billfish SMT Small tuna SHK Sharks • Overview of stock status outlook and management recommendations for all species except blue shark which was assessed this yea • Results of the Blue shark assessment • Workplans for all species group in the panel • Response to the commission 19.7 Malta ICCAT 2015 Panel 4: Other species 2 1

11/11/2015 Management SAI Stock Effects of current Biology Fisheries Outlook recommendation status regulations s WHM SAI BUM SWO 60 60 50 60 50 40 50 40 30 40 30 20 30 20 10 10 20 0 10 0 -10 0 -10 -20 -10 -20 -30 -20 -30 -40 -30 -40 -50 -40 -50 -60 -50 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 -60 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 -60 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 STOCK STRUCTURE POR SMK 60 60 50 50 40 40 30 30 20 20 10 10 0 0 -10 -10 BSH -20 -20 -30 -30 -40 -40 -50 -50 -60 -60 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 3 SMT SMALL TUNAS Regional stock structure, in most cases undefined Atlantic bonito (Sarda sarda) Frigate tuna ( Auxis thazard ) King mackerel ( Scomberomorus cavalla ) Little tunny ( Euthynnus alletteratus ) Atlantic Spanish mackerel ( Scomberomorus maculatus ) Most dominant species in the catches (5 species, more than 80% in weight) 4 2

11/11/2015 OTHER SHARKS ? ? ? ? SWO NORTH SOUTH SWO-MED. Task-I Catches Mediterranean 25000 Other surf. Longline 20000 15000 t 10000 5000 0 1950 1954 1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002 2006 2010 2014 year Total reported catch (Task I) and TACs Atlantic swordfish stocks (1950-2013) 6 3

11/11/2015 BILLFISH BUM WHM SAI E SAI W PORBEAGLE U.S.A. 10000.00 4500 Faroes NW NE 9000.00 Norway 4000 Japan 8000.00 LL Ratios Iceland 3500 St.Pierre et Miquelon EC.United Kingdom 7000.00 EC.Sweden 3000 U.S.A. EC.Portugal 6000.00 Catch (mt) Norway Ctach (mt) 2500 EC.Netherlands 5000.00 Japan EC.Ireland 2000 EC.Germany EC.Portugal 4000.00 EC.France EC.España 1500 EC.España 3000.00 EC.Denmark Canada 1000 2000.00 Faroe Islands 500 1000.00 0 0.00 1925 1928 1931 1934 1937 1940 1943 1946 1949 1952 1955 1958 1961 1964 1967 1970 1973 1976 1979 1982 1985 1988 1991 1994 1997 2000 2003 2006 Year Year Uruguay 40 500 Non reporting LL Uruguay Seychelles 35 450 Seychelles SW Japan Japan 400 Falklands 30 Falklands EC.Portugal 350 EC.Poland 25 EC.Portugal reported Catch (mt) Catch (mt) EC.Netherlands 300 EC.Poland EC.España 20 250 EC.Bulgaria EC.Netherlands Chile 15 200 SW EC.España 150 10 EC.Bulgaria 100 5 Chile estimated 50 0 0 1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007 1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007 Year Year 4

11/11/2015 Shortfin mako Shark catches are often under-reported and need to be estimated from ratios of the catch of other species SMALL TUNAS Atlantic and Mediterranean – 12 species Others (BOP, KGX, CER,SMT, SLT) Small tuna Task I cumuliative catches DOL (Coryphaena hippurus) WAH (Acanthocybium solandri) MAW (Scomberomorus tritor) BLF (Thunnus atlanticus) 160000 BLT (Auxis rochei) BRS (Scomberomorus brasiliensis) SSM (Scomberomorus maculatus) 140000 KGM (Scomberomorus cavalla) FRI (Auxis thazard) LTA (Euthynnus alletteratus) BON (Sarda sarda) 120000 100000 80000 t 60000 40000 20000 0 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 year Malta ICCAT 2015 Panel 4: Other species 10 5

11/11/2015 Relative abundance indices SWORDFISH 3 Brazil Spain Uruguay Uruguay2 Japan Japan2 C_TAI1 C_TAI2 C_TAI3 2.5 S SWO 2 Scaled Standardized CPUE N SWO 1.5 1 0.5 0 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2.5 Med SWO 2 1.5 1 0.5 0 1985 1990 1995 2000 2005 2010 2015 MoGN SpLL SiLL SiGN GrLL LiLL Malta ICCAT 2015 Panel 4: Other species 11 Relative abundance indices BILLFISH W SAI W SAI WHM W SAI W SAI 3.5 3.0 BUM E SAI 2.5 E SAI IndexEQW Combined Index IndexARW 2.0 IndexCAW 1.5 1.0 0.5 0.0 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 Malta ICCAT 2015 Panel 4: Other species 12 6

11/11/2015 Relative abundance indices SHORTFIN MAKO Shortfin mako CPUE indices and catch (North) 2.0 NORTH 8000 US-Log JPLL-N 1.8 7000 ESP-LL-N POR-LL-N 1.6 Catch-N 6000 1.4 5000 1.2 Relative CPUE Catch 1.0 4000 0.8 3000 0.6 2000 0.4 1000 0.2 0.0 0 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 Year SOUTH 13 SWO S SWO N WHM SAI W SAI E 3 BUM 2.5 SWO Med 2 F09/Fmsy 1.5 1 0.5 0 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 SSB09/SSBmsy Malta ICCAT 2015 Panel 4: Other species 14 7

11/11/2015 Shortfin mako North Atlantic South Atlantic Porbeagle: stock status NE NW SW 8

11/11/2015 2012 Ecological Risk Assessment OTHER SHARKS Outlook and management recommendations WHM • [Rec. 12-04], intended to reduce the total harvest to 400 t in 2013, 2014, and 2015 to allow the rebuilding of the white marlin stock from the overfished condition. The Committee expressed its concern on the effectiveness of such measure in light of the misidentification of spearfishes in the white marlin catches, which causes uncertainty in stock assessment results and enforcement related problems. • One approach to reduce fishing mortality could be the use of non-offset circle hooks as terminal gear 18 9

11/11/2015 Outlook and management recommendations BUM • Concerns on the effectiveness of [Rec. 12-04], intended to reduce the total harvest to 2,000 t in light of severe under reporting currently occurring in some fisheries. Therefore, the Committee alerts the Commission that unless such non- compliance issues are properly addressed the adoption of additional measures might be rendered ineffective. • The adoption of measures such as, but not limited to the mandated use of non-offset circle hooks as terminal gear to reduce marlin mortality . • Actions to reduce fishing mortality of blue marlin from non- industrial fisheries. 19 Outlook and management recommendations SAI • Catches for the eastern stock should be reduced from current levels. It should be noted, however, that artisanal fishermen harvest a large part of the sailfish catch along the African coast. • Catches of the western stock of sailfish should not exceed current levels. It should be noted, however, that artisanal fishermen harvest a large part of the sailfish catch of the western sailfish stock. • One approach to reduce fishing mortality could be the use of non-offset circle hooks as terminal gear. • The Committee recommends all countries landing or having dead discards of sailfish, report these data to the ICCAT Secretariat. 20 10

11/11/2015 Outlook and management recommendations SWO South The committee did not have sufficient confidence in the assessment results to change the previous recommendation to limit catches to no more than 15,000 t SWO North • current TAC of 13,700 t has an 83% probability of maintaining the North Atlantic swordfish stock in a rebuilt condition by 2021 while maintaining biomass • without better direction from the Commission with regard to what constitutes a ‘high probability’, it cannot provide more specific advice. TACs up to 14,300 t would still have a higher than 50% probability of maintaining the stock in a rebuilt condition by 2021 but would be expected to lead to greater biomass declines 21 Outlook and management recommendations SWO Mediterranean: • Maintain the current management measures of Mediterranean swordfish as adopted in [Rec. 13-04] until additional data permits a conclusion as to whether or not they are sufficient to allow the stock to rebuild to a level in line with the Convention objectives. • However, it has been noted that the recently adopted management measures may have increased discard levels of undersized swordfish; therefore it is recommended to closely monitor the fishery and that every component of the Mediterranean swordfish mortality be adequately reported to ICCAT by the CPCs. • Moreover, as it has been noted that the number of vessels in the ICCAT records of vessels authorized to catch Mediterranean swordfish is generally higher than the vessels that are active in each CPC, the Committee recommends that the implications of this potential excess capacity should be considered by the Commission. 22 11