CHILEAN JACK MACKEREL WORKSHOP 30 JUNE – 4 JULY 2008 0° DISTRIBUTION AND CONCENTRATION OF JACK MACKEREL ( Trachurus murphyi ) RELATED TO OCEANOGRAPHICAL FEATURES BETWEEN FEATURES BETWEEN NORTH PERU TO NORTH CHILE 30° Trachurus murphyi
JACK MACKEREL ANNUAL LANDINGS IN PERU FROM 1950 TO 2007 15 000 000 LANDINGS (Tonns) 10 000 000 5 000 000 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 Anchovy Sardine Jack mackerel Pacific mackerel 800 000 Jack mackerel 700 tons 600 000 LANDINGS (Tonns) 500 tons 400 000 200 000 0 1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007
STUDY AREA LOCATION 4° 00’S – 24° 00’S Main pelagic resource: Engraulis ringens Sardinops sagax sagax Trachurus murphyi Scomber japonicus
SOURCE OF INFORMATION IMARPE PELAGIC SURVEY Hydroacoustic method LAND OCEANOGRAPHIC STATION LAND OCEANOGRAPHIC STATION From: ILO (17° S) IV REGIONAL OCEANOGRAPHIC SURVEY
SYSTEM OF CURRENT BETWEEN SOUTH PERU – NORTH CHILE (JANUARY – OCTOBER 2005) Eddie oceanográfico January February March April May June July August September October
SELA/BID SURVEY MARCH 1983 85° W 80° W 0° S Biomass (thousand tonns) 500 000 1 000 000 1 500 000 5° S 10° S 15° 15° S S 20° S 25° S
PELAGIC RESOURCE SURVEY MARCH 2005 85° W 80° W 0° S Biomass (thousand tonnes) 250 000 500 000 750 000 1 000 000 5° S 10° S 15° 15° S S Chilean Fishery Data 20° S 25° S
JACK MACKEREL DISTRIBUTION ON MARCH 1983 AND MARCH 2005 85° W 85° W 80° W 80° W 0° S PELAGIC SELA/BID SURVEY SURVEY (March 2005) (March 1983) 5° S 10° S 15° S Chilean Fichery Data 20° S 25° S 30° S
BIOMASS (Thousa sand of tonnes) 1 000 2 000 3 000 4 000 5 000 5 000 6 000 7 000 8 000 9 000 0 1983 Mar-83 - - Oct-83 - - Aug-84 - - Mar-85 - - HIGH BIOMASS Apr-86 - - JACK MACKEREL BIOMASS IN PERU FROM 1983 TO 2007 Aug-87 - - May-88 - - Aug-89 - - Dec -89 - - Mar-90 - - Jan -91 - - Aug-91 - - Mar-92 - - Mar-93 - - Mar-94 - - 1995 INTERPHASE Mar-95 - - Mar-96 - - Nov-96 - - Apr-97 Abr-97 Oct-97 Oct-97 Nov-97 Nov-97 1998 Abr-98 Apr-98 Jun-98 Jun-98 Set-98 -98 Dec -98 -98 Mar-99 Mar-99 Jun-99 Jun-99 Aug-99 -99 Dec -99 -99 Feb-00 Feb-00 LOW BIOMASS Aug-00 -00 Nov-00 Nov-00 NORTH Mar-01 Mar-01 Aug-01 -01 Nov-01 Nov-01 Mar-02 Mar-02 RESEARCH SURVEY CENTER Nov-02 Nov-02 Mar-03 Mar-03 Mar-04 Mar-04 Mar-05 Mar-05 Dec -05 -05 SOUTH Mar-06 Mar-06 2007 Nov-06 Nov-06 Mar-07 Mar-07
MONTHLY CATH DISTRIBUTION OF JACK MACKEREL RELATED TO ATSM IN ILO 3° 3° S S 4° 4° S S 5° 5° S S 6° 6° S S 7° 7° S S 115000 115000 115000 110000 110000 110000 8° 8° S S 105000 105000 105000 100000 100000 100000 9° 9° S S 95000 95000 95000 90000 90000 90000 10° 10° S S 85000 85000 85000 80000 80000 80000 A (toneladas) A (toneladas) A (toneladas) 75000 75000 75000 11° 11° S S 70000 70000 70000 65000 65000 65000 12° 12° S S 60000 60000 60000 CAPTURA CAPTURA CAPTURA 55000 55000 55000 55000 55000 55000 13° 13° S S 50000 50000 50000 45000 45000 45000 14° 14° S S 40000 40000 40000 35000 35000 35000 15° 15° S S 30000 30000 30000 25000 25000 25000 20000 20000 20000 16° 16° S S 15000 15000 15000 10000 10000 10000 17° 17° S S 5000 5000 5000 0 0 0 18° 18° S S E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E 1990 1990 1991 1991 1992 1993 1992 1993 1994 1994 1995 1995 1996 1996 1997 1997 1998 1999 1998 1999 2000 2000 2001 2002 2001 2002 2003 2003 2004 2004 2005 2005 2006 2006 4.0 ATSM-Ilo (° 3.0 2.0 1.0 0.0 -1.0 C) -2.0 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
WATER COLUMN (200 km) OFF SOUTH AMERICAN COAST RELATED TO JACK MACKEREL BIOMASS AND CATCH (SEPTEMBER 2001) 50 Sep - Oct 40 November CATCH (%) 30 20 10 0 160 160 160 160 (Thous 120 120 120 120 120 120 120 120 usand of tonnes) B BIOMASS 80 80 80 80 40 40 40 40 0 0 0 0 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 LATITUD SUR (° S) Estación CHILE PERU ¦ ECUADOR ¦ COLOMBIA 0 0 PROFUNDIDAD (m) 100 100 200 200 300 300 4000 3500 3000 2500 2000 1500 1000 500 0 DISTANCIA (km)
JACK AND PACIFIC MACKEREL LENGTH STRUCTURE (February, 17th – 23rd 2003) Juvenile (%) 16° S 46 % JACK MACKEREL 82 % 82 % 17° 17° S S NORTH 99 % CHILE 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Total length (cm) Juvenile (%) SOUTH 16 % PERU PACIFIC MACKEREL NORTH CHILE 55 % 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 Fork length (cm)
JACK MACKEREL ANNUAL LENGTH STRUCTURE BY LATITUDINAL DEGREE (1996-2007) El Niño 1998 1996 1997 1999 2000 2001 -03º -04º -05º LATITUDINAL DEGREE -06º -07º -08º -09º -10º -11º -12º -13º -14º -15º -16º -17º -18º 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) Evento cálido 2002 2002 2007 2007 2003 2003 2004 2004 2005 2005 2006 2006 -03º -03º -04º -04º -05º -05º LATITUDINAL DEGREE -06º -06º -07º -07º -08º -08º -09º -09º -10º -10º -11º -11º -12º -12º -13º -13º -14º -14º -15º -15º -16º -16º -17º -17º -18º -18º 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm)
CONCLUSION During 1983 to 2007 drastically changes occurs in distribution and concentration of jack mackerel on Peruvian sea, and these changes would be linked to interdecadal and interannual changes of environmental conditions, linked to interdecadal and interannual changes of environmental conditions, and they will be important for to test hypothesis about the structure of jack mackerel population, and also for resource management.
INTERDECADAL AND INTERANNUAL CHANGES OF ENVIRONMENTAL CONDITIONS (1900-2007) 1983 2001 4 3 AL VARIABILIDAD AMBIENTA 2 1 0 -1 -2 -3 -4 1900 19051910 1915 1920 19251930 1935 1940 19451950 1955 1960 19651970 1975 1980 19851990 1995 2000 20052010 2015
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