Changes in the latitudinal and longitudinal distribution of the aggregations of jack mackerel ( Trachurus murphyi ) in the Peruvian sea during 1996 - 2007 Present by: Ericka Espinoza, Miguel Ñiquen & Roberto Flores Chilean Jack Mackerel Workshop 30 June - 4 July 2008
Introduction: Jack mackerel is a highly migratory pelagic species widespread in the South Pacific Ocean In Peru, jack mackerel is found along of all the coast ECUADOR Pesquería Pesquería PESQUERIA and it has been recorded to 200 – 350 nm. Perú Perú PACIFICO PERUANA SUD ORIENTAL According to landings of IMARPE (2006), jack mackerel Pesquería Pesquería Norte Norte-Chile Chile represented the third most important resource in the fishery Pesquería Pesquería Pesquería Coquimbo Coquimbo Internacional Pesquería Pesquería 1.2 Sur-Chile Sur Chile I MARPE, 2006 1 1 1 Distribución de la Especie 0.8 Localización de las pesquerías 0.6 Limite de las 200 millas 0.4 0.3 0.28 Distribución y localización de las principales áreas de pesca de jurel en el Pacifico Sur (Serra, 1991) 0.2 0.1 0.03 0 An ch Pota Ju rel Caballa M erlu z a In the Peruvian sea is not recognized a clear pattern of migratory behavior of jack mackerel throughout its life cycle
Objective: To describe the changes in the latitudinal and longitudinal distribution of jack mackerel in the Peruvian Sea during 1996 - 2007 and their relationship to the dominanceof some types of water masses. Methodology: Obtaining of the information Analysis of the information Area study LOOP LOOP Minimum size of capture = 31 cm ( Logbook-On board Observers Program ) Adults Juveniles Sampling in situ 30 cm 31 cm Purse seine fleet Total length 1996 - 2007 > > =51% =51% Cruise: Juveniles Adults Pelagic and Oceanographic Scientific surveys
1996 1999 2000 2001 1997 1998 Results: Results: Latitudinal and longitudinal size composition of jack mackerel catches Latitudinal and longitudinal size composition of jack mackerel catches El Niño El Niño 1996 1997 1998 1999 2000 2001 -03º -04º -05º Latitudinal grade -06º -07º -08º -09º -10º -11º -12º -13º -14º ADULTS -15º Where and why were gone? -16º -17º High incidence of juveniles -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 10 20 Distance to the coast (nm) 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 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 Total lenght (cm)
Latitudinal and longitudinal size composition of jack mackerel catches Latitudinal and longitudinal size composition of jack mackerel catches El Niño 2002 2003 2004 2005 2006 2007 -03º -04º Latitudinal grade -05º -06º -07º -08º -09º -10º -11º -12º -13º -14º -15º -16º -17º -18º 10 20 30 40 5010 20 30 40 5010 20 30 40 50 10 20 30 40 5010 20 30 40 50 10 20 30 40 50 10 Distance to the coast (nm) 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 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 Total lenght (cm) The smaller sizes were located to the south extreme of their distribution
S ize composition of jack mackerel catches by biological year ize composition of jack mackerel catches by biological year 30 1996 = 56% Juv 15 30 0 1997 = 38% Juv 15 30 0 1998 = 47% Juv 15 30 0 1999 = 94% Juv 15 e frequency % 30 0 2000 = 80% Juv 15 30 0 2001 = 93% Juv From 1999 to 2005, the juveniles observed in 1999 15 Relative could have constituted the group of the following years. could have constituted the group of the following years. 30 0 This would indicate that jack mackerel stayed in Peruvian 2002 = 46% Juv 15 waters. 0 30 2003 = 43% Juv 15 30 0 2004 = 02% Juv 15 0 30 2005 = 64% Juv 15 30 0 2006 = 95% Juv 15 30 0 2007 = 51% Juv 15 0 10 20 30 40 50 Total length (cm)
Changes in the distribution of jack mckerel Changes in the distribution of jack mckerel Purse seine fleet – fishing sets Scenario1 Scenario 2 2001 1996 1997 1998 2000 2002 2003 2004 2005 2006 2007 1999 -4 v PAITA -6 PTA. FALSA v “"disappeared" of the north zone PIMENTEL CHICAMA -8 CHIMBOTE -10 HUARMEY HUACHO -12 CALLAO CERRO AZUL PISCO -14 PTA. DOÑA MARIA Adults SAN JUAN -16 ATICO Juveniles QUILCA ILO -18 150 250 20 70 60 250 20 10 130 10 200 20 160 20 70 10 170 20 170 20 140 20 D.C (nm): 60 10 Acoustic survey Pto. Pizarro Pto. Pizarro ° S Pta. Sal Pta. Sal Cr.9703-04 Cr. 0602-04 Cr. 0502-04 Cr. 0702-03 Cr 9803-05 CR. 9902-03 CR. 0002-03 CR. 0103-04 Cr. 0302-04 Cr. 0402-04 Talara Distribución de jurel Talara Paita Paita Distribución de jurel Pta. Gobernador Pta. Gobernador ° S Pta. La Negra Pta. La Negra Mórrope Mórrope Pimentel Pimentel Chérrepe Chérrepe VALORES ECOINTEGRADOS (m²/mn²) Chicama VALORES ECOINTEGRADOS (m²/mn²) Chicama ° S Salaverry Salaverry 1000 1000 Punta Chao Punta Chao 750 Chimbote 750 Chimbote Casma Casma Punta Lobos 500 500 Punta Lobos ° S Huarmey Huarmey Punta Bermejo 250 250 Punta Bermejo Supe Supe Huacho 100 Huacho 100 Cr. 9602-04 Chancay Cr. 0202-03 Chancay 50 ° S Callao 50 Callao Pucusana 10 Pucusana 10 Cerro Azul Cerro Azul 5 Tambo de Mora 5 Tambo de Mora Pisco Pisco ° S 1 Bahía Independencia 1 Bahía Independencia Punta Infiernillos Punta Infiernillos Punta Caballas Punta Caballas San Juan San Juan Chala Chala ° S Atico Ocoña Atico Ocoña Quilca Quilca Mollendo Mollendo Ilo Ilo ° S M. M
Jack mackerel and its relation with water masses Jack mackerel and its relation with water masses The data analyzed of jack mackerel and water mass corresponded only to summers Purse seine fleet Cruise survey Fishing set: 1997 1996 1998 1999 2000 2001 Pto. Pizarro Pto. Pizarro Pto. Pizarro Pto. Pizarro Pto. Pizarro Punta Sal Punta Sal Punta Sal Punta Sal Punta Sal CRUCERO 000103 CRUCERO 970204 CRUCERO 980205 Talara Talara CRUCERO 960204 Talara Talara Talara CRUCERO 990203 Paita Paita Paita Paita Paita SALINIDAD (UPS) SALINIDAD (UPS) Punta Gobernador Punta Gobernador SALINIDAD (UPS) Punta Gobernador Punta Gobernador Punta Gobernador SALINIDAD (UPS) SALINIDAD (UPS) Pta. La Negra Pta. La Negra Pta. La Negra Pta. La Negra Pta. La Negra Morrope Morrope Morrope Morrope Morrope Pimentel Pimentel Pimentel Pimentel Pimentel Cherrepe Cherrepe Cherrepe Cherrepe Cherrepe Chicama Chicama Chicama Chicama Chicama Salaverry Salaverry Salaverry Salaverry Salaverry Punta Chao Punta Chao Punta Chao Punta Chao Punta Chao Chimbote Chimbote Chimbote Chimbote Chimbote Casma Casma Casma Casma Casma Punta Lobos Punta Lobos Punta Lobos Punta Lobos Punta Lobos Huarmey Huarmey Huarmey Huarmey Huarmey Pto. Bermejo Pto. Bermejo Pto. Bermejo Pto. Bermejo Pto. Bermejo Supe Supe Supe Supe Supe Huacho Huacho Huacho Huacho Huacho Chancay Chancay Chancay Chancay Chancay Callao Callao Callao Callao Callao Pucusana Pucusana Pucusana Pucusana Pucusana Cerro Azul Cerro Azul Cerro Azul Cerro Azul Cerro Azul Tambo de Mora Tambo de Mora Tambo de Mora Tambo de Mora Tambo de Mora Pisco Pisco Pisco Pisco Pisco Bahia Independencia Bahia Independencia Bahia Independencia Bahia Independencia Bahia Independencia Pta. Dona Maria Pta. Dona Maria Pta. Dona Maria Pta. Dona Maria Pta. Dona Maria Pta. Dona Maria Pta. Dona Maria Pta. Dona Maria Punta Caballas Punta Caballas Punta Caballas Punta Caballas Punta Caballas Punta Caballas San Juan San Juan San Juan San Juan San Juan Chala Chala Chala Chala Chala Atico Atico Atico Atico Atico Matarani Matarani Matarani Matarani Matarani Ilo Ilo Ilo Ilo Ilo 2002 2003 2004 2005 2006 2007
Alimentación Alimentación V: EUF V: EUF V: EUF V: COP V: EUF V: EUF O: EUF O: AN O: AN O: ANF O: AN O: EUF I: EUF I: EUF I: EUF I: PM I: EUF I: EUF P: EUF P:EUF P:EUF P: EUF P:EUF P: EUF 2002 1996 1997 1998 1999 2000 2001 2003 2004 2005 2006 2007 -4 PAITA -6 PTA. FALSA PIMENTEL CHICAMA -8 CHIMBOTE -10 HUARMEY Callao HUACHO -12 CALLAO Pisco: Crustaceos (copepodos y zoeas) CERRO AZUL -14 PISCO PTA. DOÑA MARIA SAN JUAN -16 ATICO QUILCA Ilo: crustaceos ILO -18 EUF EUF EUF EUF V: PM EUF EUF EUF EUF EUF ZOE ZOEA ZOEA ZOEA I: PM ZOEA ZOE ZOE ZOE ZOE TELE EUF EUF EUF EUF V: PM V: PM V: PM V: PM EUF EUF ZOEA I: PM I: PM I: PM I: PM V: PM O: LP O: LP Pleuroncodes monodon Blaskovich et al., 2007(no publicado) Norte Why “disappears”? Unfavorable oceanographic conditions? Predation? Centro Why stay there and why not return? Availability of food and favorable oceanographic conditions? Sur
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