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22 results on '"Rioja-Garay, Pilar"'

1. Stock identification: advancing in the knowledge of stock structure as a requirement for stock assessment

Author

European Commission, García-Isarch, Eva, Pérez, Montse, Partida, Blanca, Landa, Jorge, Czerwinski, Ivone Alejandra, Acosta, Carolina, Muñoz, Eli, Johnstone, Carolina, Rey-Sanz, Javier, Hernández, Eva M., Jurado-Ruzafa, Alba, González, José F., Pérez, Adriana, Rioja-Garay, Pilar, Pita, Álvaro, Ramón, Jenifer, Rico, Gemma, Seijas, Iria, Thiaw, Modou, Gueye, Aboubacar, Ndiaye, Dame, Ndao, Séga, Cissokho, Idrissa, Sow, Papa Samba, Diallo, Ibrahima, Camara, Ousmane II, Traore, Diafodé, Diallo, Mamadou Sadjo, Ansong, Ernest, Afetorgbor, Julius, Tawiah, Patrick, Ekuban, Ato, Camara, Assana, dos Santos, Neidimar, Barri, Iça, Meissa, Beyah, Mohamed, Beyih, Khattry, Sid'Ahmed, Mbodj, Omar Bocar, Ciré, Wagne Amadou, Jallow, Momodou S., Sidibeh, Momodou, Mendy, Peter K., Jarju, Mam Jarra, Bakari, Coulibaly, Tapé, Joanny, Ramsès, N'gotta Bi, Guitton, Jerome, European Commission, García-Isarch, Eva, Pérez, Montse, Partida, Blanca, Landa, Jorge, Czerwinski, Ivone Alejandra, Acosta, Carolina, Muñoz, Eli, Johnstone, Carolina, Rey-Sanz, Javier, Hernández, Eva M., Jurado-Ruzafa, Alba, González, José F., Pérez, Adriana, Rioja-Garay, Pilar, Pita, Álvaro, Ramón, Jenifer, Rico, Gemma, Seijas, Iria, Thiaw, Modou, Gueye, Aboubacar, Ndiaye, Dame, Ndao, Séga, Cissokho, Idrissa, Sow, Papa Samba, Diallo, Ibrahima, Camara, Ousmane II, Traore, Diafodé, Diallo, Mamadou Sadjo, Ansong, Ernest, Afetorgbor, Julius, Tawiah, Patrick, Ekuban, Ato, Camara, Assana, dos Santos, Neidimar, Barri, Iça, Meissa, Beyah, Mohamed, Beyih, Khattry, Sid'Ahmed, Mbodj, Omar Bocar, Ciré, Wagne Amadou, Jallow, Momodou S., Sidibeh, Momodou, Mendy, Peter K., Jarju, Mam Jarra, Bakari, Coulibaly, Tapé, Joanny, Ramsès, N'gotta Bi, and Guitton, Jerome

Abstract

DEMERSTEM- Objectives of WP 1: -Improve the knowledge on the selected demersal stocks with a particular effort to solve the problems of stock identification and improvement of the quality of the data used for the assessment. -This follows the recommendations regularly made by CECAF.

Published
2023

2. DEMERSTEM : WP1 Stock identification Pseudotolithus elongatus Guinea Bissau and Guinea

Author

European Commission, Landa, Jorge, Czerwinski, Ivone Alejandra, Partida, Blanca, García-Isarch, Eva, Acosta, Carolina, Barri, Iça, Diallo, Ibrahima, Camara, Assana, Dosantos, Neidimar, Traore, Diafodé, Camara, Ousmane II, Rioja-Garay, Pilar, González, José F., Rey-Sanz, Javier, Guitton, Jerome, European Commission, Landa, Jorge, Czerwinski, Ivone Alejandra, Partida, Blanca, García-Isarch, Eva, Acosta, Carolina, Barri, Iça, Diallo, Ibrahima, Camara, Assana, Dosantos, Neidimar, Traore, Diafodé, Camara, Ousmane II, Rioja-Garay, Pilar, González, José F., Rey-Sanz, Javier, and Guitton, Jerome

Abstract

The bobo croacker P. elongatus is assumed by CECAF as one single stock for Guinea-Bissau, Guinea, Sierra Leone and Liberia for assessment purposes. The consideration of one single stock for these 4 countries follows practical reasons and has no any biological basis.

Published
2023

3. STANDARDIZED CATCH RATES OF ALBACORE (THUNNUS ALALUNGA BONNATERRE, 1788) IN THE SPANISH RECREATIONAL FISHERY IN THE WESTERN MEDITERRARREAN IN THE PERIOD 2005-2019

Author

Saber, Sámar, Macías-López, Ángel David, García-Barcelona, Salvador, Meléndez-Vallejo, María José, Gómez-Vives, María José, Rioja-Garay, Pilar, Godoy-Garrido, María Dolores, Puerto-González, Miguel Ángel, and Ortiz-de-Urbina-Gutiérrez, José María

Subjects
fish, graphs, Centro Oceanográfico de Málaga, CPUE, catch/effort, recreational fishery, Pesquerías, Thunnus alalunga, time series, Western Mediterranean Sea, data processing
Abstract

Catch and effort data from the Spanish recreational fishery in the Balearic Sea (Western Mediterranean) were analysed to estimate an index of relative abundance for albacore for the years 2005-2019. Standardized catch per unit effort (CPUE) in number were estimated through a General Linear Mixed Modeling (GLMM) approach under a negative binomial (NB) error distribution assumption. Nominal catch rates and a standardized abundance index are presented along with estimates of 95% confidence limits of the predicted means. These indices show an upward trend from the start of the series 2005 peaking in 2013; followed by a decrease until 2015. For the latest four-year period (2016-2019), the index shows a relatively stable trend fluctuating around a level two times lower than the maximum abundance recorded in the time series., SI

Published
2021

4. Estudio de la madurez y fecundidad de Coryphaena hippurus, en el mar de Alborán - Mediterráneo occidental

Author

Saber, Sámar, Bettinetti, M., Moreno-Castro, Pilar, Gómez-Vives, María José, Ortiz-de-Urbina-Gutiérrez, José María, Rioja-Garay, Pilar, Godoy-Garrido, María Dolores, and Macías-López, Ángel David

Subjects
Centro Oceanográfico de Málaga, Coryphaena hippurus, fecundidad por tandas, en, área de puesta, sex, Pesquerías, sex ratio, Mediterráneo, proporción de sexos
Abstract

La llampuga Coryphaena hippurus (Linnaeus, 1758) también conocida como dorado o lirio es una especie epipelágica migratoria ampliamente distribuida en aguas tropicales y subtropicales. Esta especie es de gran interés tanto para las pesquerías comerciales como para las deportivas en múltiples países a nivel mundial. Las llampugas son reproductores parciales con periodos de puesta que se extienden durante varios meses en aguas cálidas preferentemente de 21-30ºC. En este trabajo se emplearon ejemplares capturados por la pesca deportiva en campeonatos de pesca de altura celebrados en aguas del Mediterráneo, concretamente en el mar de Alborán, durante nueve años (2011-2019) en los meses de agosto y septiembre. El análisis del sex ratio de 70 individuos (57 – 114 cm) mostró una mayor proporción de hembras que de machos (2:1). Un total de 45 ovarios fueron clasificados macroscópicamente, de los cuales 30 fueron examinados histológicamente. Las estimas de la fecundidad por tandas de 10 hembras (58 – 101 cm) varío entre 104179 y 1231207 ovocitos hidratados con una media de 686495 ± 409088 ovocitos hidratados. El análisis del índice gonadosomático y el examen de las gónadas (macroscópico y microscópico) ponen de manifiesto que el mar de Alborán es una zona de puesta para la llampuga.

Published
2021

5. STANDARDIZED CATCH RATES OF ALBACORE (THUNNUS ALALUNGA BONNATERRE, 1788) IN THE SPANISH SURFACE LONGLINE FISHERY IN THE WESTERN MEDITERRANEAN IN THE PERIOD 2009-2019

Author

García-Barcelona, Salvador, Macías-López, Ángel David, Saber, Sámar, Gómez-Vives, María José, Rioja-Garay, Pilar, Meléndez-Vallejo, María José, Ortiz-de-Urbina-Gutiérrez, José María, García-Barcelona, Salvador, Macías-López, Ángel David, Saber, Sámar, Gómez-Vives, María José, Rioja-Garay, Pilar, Meléndez-Vallejo, María José, and Ortiz-de-Urbina-Gutiérrez, José María

Abstract

Standardized relative abundance indices of albacore (Thunnus alalunga Bonnaterre, 1788) caught by the Spanish surface longline (LLALB) in the western Mediterranean Sea were estimated for the period 2009-2019. Yearly standardized CPUE were estimated through Generalized Linear Mixed Effects Models (GLMM) under a negative binomial error distribution assumption. The main factors in the standardization analysis were year and season (quarter). The index shows an increasing trend from the beginning of the series (2009) to a maximum in 2011; following a decrease up to 2013, and a relatively stable trend fluctuating around a level three and a half times lower compared to the maximum abundance for the period 2013-2019.

Published
2021

6. Standardized catch rates for mediterranean swordfish (xiphias gladius linnaeus, 1758) from the spanish longline fishery. 1988-2018

Author

Saber, Sámar, Macías-López, Ángel David, García-Barcelona, Salvador, Rioja-Garay, Pilar, Gómez-Vives, María José, Godoy-Garrido, María Dolores, Meléndez-Vallejo, María José, Puerto, M.A., and Ortiz-de-Urbina-Gutiérrez, José María

Subjects
fish, graphs, Swordfish, Centro Oceanográfico de Málaga, generalized linear mixed model, pelagic longline fisheries, Mediterranean Sea, catch/effort, Pesquerías, abundance indices, data processing, height
Abstract

Standardized relative abundance indices for swordfish (Xiphias gladius Linnaeus, 1758) caught by the Spanish surface longline in the western Mediterranean Sea were estimated for the period 1988-2018. Standardized CPUEs in number were estimated through a General Linear Mixed Modeling (GLMM) approach under a negative binomial (NB) error distribution assumption. Standardized CPUEs in biomass were estimated through a General Linear Mixed Modeling (GLMM) approach under a log-normal error distribution assumption. The main factors in the standardization analysis were fishing area and time of the year (quarter). The standardized indices showed notable annual fluctuations without any definite trend for the period under study, SI

Published
2020

7. EFFECTS OF ICCAT Rec [2016-05] SIZE REGULATION ON THE DISCARDS OF THE SPANISH LONGLINE FISHERY TARGETING SWORDFISH (Xiphias gladius Linnaeus, 1758) IN THE WESTERN MEDITERRANEA

Author

García-Barcelona, Salvador, Macías-López, Ángel David, Saber, Sámar, Gómez-Vives, María José, Rioja-Garay, Pilar, and Ortiz-de-Urbina-Gutiérrez, José María

Subjects
Centro Oceanográfico de Málaga, Pesquerías
Abstract

The ICCAT Commission, at its meeting on November 2016, approved a multi-annual recovery plan for the Mediterranean swordfish starting in 2017 and continuing through 2031 (ICCAT Rec [2016-05]). Among other provisions, the recovery plan proscribed a minimum landing size (MLS) of 100 cm (lower-jaw fork length- LJFL), which is 10 cm higher than the previously implemented (ICCAT Rec [2013-04]). The aim of this study is to assess the effect of the recently implemented MLS on the swordfish discarding activities by the Spanish surface longline fishery operating in the western Mediterranean for the period 2015-2017. Our results show that: i) as compared to the former MLS (ICCAT Rec [2013-04]), a higher percentage of undersized dead fish is now discarded at sea, with the additional risk that does not be reported and taken into consideration during the assessment of the stock; ii) the amount of fishing effort (number of hooks) for fulfilling the allocated quota has increased; iii) the fishing season must be longer to achieve the allocated quota. Both the increase in fishing effort and the lengthening of the fishing season have an adverse effect on the economic profitability of the surface longline fleet without achieving the intended reduction in the fishing mortality exerted on the juvenile fraction of the Mediterranean swordfish stock.

Published
2020

8. Standardized catch rates for Mediterranean swordfish (Xiphias gladius Linnaeus, 1758) from the Spanish longline fishery. 1988-2017

Author

Ortiz-de-Urbina-Gutiérrez, José María, Saber, Sámar, García-Alcázar, Santiago, Rioja-Garay, Pilar, Gómez-Vives, María José, Godoy-Garrido, María Dolores, Meléndez-Vallejo, María José, Puerto-González, Miguel Ángel, and Macías-López, Ángel David

Subjects
Swordfish, Centro Oceanográfico de Málaga, Catch/effort, Abundance indices, Mediterranean Sea, Pesquerías, Generalized Linear Mixed model, Pelagic longline fisheries
Abstract

Standardized relative abundance indices for swordfish (Xiphias gladius Linnaeus, 1758) caught by the Spanish surface longline in the western Mediterranean Sea were estimated for the period 1988-2017. Standardized CPUEs were estimated through a General Linear Mixed Modeling (GLMM) approach under a negative binomial (NB) error distribution assumption. The main factors in the standardization analysis were fishing area and time of the year (quarter). The standardized index showed notable annual fluctuations without any definite trend for the period under study.

Published
2019

9. Standardized catch rates of albacore (Thunnus alalunga Bonnaterre, 1788). 2009-2017 Spanish Surface longline fishery -LLALB- in the western Mediterranean

Author

García-Alcázar, Santiago, Saber, Sámar, Macías-López, Ángel David, Gómez-Vives, María José, Rioja-Garay, Pilar, Ortiz-de-Urbina-Gutiérrez, José María, García-Alcázar, Santiago, Saber, Sámar, Macías-López, Ángel David, Gómez-Vives, María José, Rioja-Garay, Pilar, and Ortiz-de-Urbina-Gutiérrez, José María

Published
2019

10. El uso científico de la información obtenida en los campeonatos de curricán de altura de la pesca deportiva en el mar de Alborán

Author

Saber, Sámar, Gómez-Vives, María José, Godoy-Garrido, María Dolores, Rioja-Garay, Pilar, García-Barcelona, Salvador, Ortiz-de-Urbina-Gutiérrez, José María, Meléndez-Vallejo, María José, Puerto, M.A., Camiñas-Hernández, Juan Antonio, Macías-López, Ángel David, Saber, Sámar, Gómez-Vives, María José, Godoy-Garrido, María Dolores, Rioja-Garay, Pilar, García-Barcelona, Salvador, Ortiz-de-Urbina-Gutiérrez, José María, Meléndez-Vallejo, María José, Puerto, M.A., Camiñas-Hernández, Juan Antonio, and Macías-López, Ángel David

Published
2018

11. Standardized catch rate of albacore (Thunnus alalunga Bonnaterre, 1788) caught by the Spanish surface longline fishery in the western Mediterranean 2004-2015

Author

Saber, Sámar, Macías-López, Ángel David, Rioja-Garay, Pilar, and Ortiz-de-Urbina-Gutiérrez, José María

Subjects
Centro Oceanográfico de Málaga, Catch/effort, Mediterranean Sea, Longline, Pelagic fisheries, Stock assessment, Pesquerías, Albacore
Abstract

Standardized relative abundance indices of albacore (Thunnus alalunga Bonnaterre, 1788) caught by the Spanish surface longline, LLALB, in the western Mediterranean Sea were estimated for the period 2004-2015. Standardized CPUEs were estimated through a General Linear Modeling (GLM) approach under a negative binomial error distribution assumption. The main factors in the standardization analysis were fishing area and time of the year. Following a relatively stable trend for the period 2004-2008 and an increase between 2009 and 2010, the index seems to have declined since 2011 onwards.

Published
2017

12. Análisis de las tendencias de las capturas de atún listado Katsuwonus pelamis (Linnaeus, 1758) de la pesca deportiva en el Mediterráneo occidental (2006-2014)

Author

Saber, Sámar, Muñoz, P., Ortiz-de-Urbina-Gutiérrez, José María, Gómez-Vives, María José, Rioja-Garay, Pilar, Macías-López, Ángel David, Saber, Sámar, Muñoz, P., Ortiz-de-Urbina-Gutiérrez, José María, Gómez-Vives, María José, Rioja-Garay, Pilar, and Macías-López, Ángel David

Abstract

Skipjack tuna, Katsuwonus pelamis is a tropical tuna species that inhabits the warm waters worldwide. This species is caught as bycatch of tuna fisheries in the Mediterranean Sea whereas a variety of fisheries target skipjack tuna in the three oceans. This species is a resource of high economic value for many countries and information about its basic life history parameters, distribution and catches is available, however that information in the Mediterranean Sea is scarce. The main objective of this study was to test for interannual variability in the catches of this species in two areas: the Balearic Sea and its surroundings (area I), and the Alboran Sea (area II). Catch per unit effort of skipjack tuna (both in number and kilograms) from individuals caught by recreational fisheries was assessed. Our results indicate that the occurrence of skipjack tuna in fishing area II is larger than those found in fishing area I. Nevertheless, larger individuals were caught in fishing area I, coinciding with the spawning season. Finally, the CPUE of skipjack tuna was tested against two explanatory variables (area and year) using a general linear model (GLM). Our results conclude that these variables explain the 58% of the variability of the catches of this species in the studied areas, where an increasing trend of captures was found. Despite the limitations of the present study, our results showed evidence of an increment of the skipjack tuna abundance in the spawning ground of other tuna species.

Published
2015

14. Biometric relationships and condition of Atlantic bluefin tuna (Thunnus thynnus) from the north-east Atlantic and Mediterranean Sea.

Author

Rodriguez-Marin, Enrique, Ortiz-de-Urbina-Gutiérrez, José María, Quelle, Pablo, Santos, Miguel Neves, Abid, N., Alot-Montes, Enrique, Deguara, Simeon, Serna-Ernst, José Miguel de-la, Gómez-Vives, María José, Karakulak, F.S., Labidi, N., Macías-López, Ángel David, Rioja-Garay, Pilar, Ruiz, Marta, Saber, Sámar, Rodriguez-Marin, Enrique, Ortiz-de-Urbina-Gutiérrez, José María, Quelle, Pablo, Santos, Miguel Neves, Abid, N., Alot-Montes, Enrique, Deguara, Simeon, Serna-Ernst, José Miguel de-la, Gómez-Vives, María José, Karakulak, F.S., Labidi, N., Macías-López, Ángel David, Rioja-Garay, Pilar, Ruiz, Marta, and Saber, Sámar

Published
2013

15. Biometric relationships of Atlantic bluefin tuna (Thunnus thynnus) from the north-east Atlantic and Mediterranean sea

Author

Rodriguez-Marin, Enrique, Ortiz-de-Urbina-Gutiérrez, José María, Abid, N., Alot-Montes, Enrique, Deguara, Simeon, Serna-Ernst, José Miguel de-la, Gómez-Vives, María José, Macías-López, Ángel David, Quelle, Pablo, Rioja-Garay, Pilar, Ruiz, Marta, Saber, Sámar, Rodriguez-Marin, Enrique, Ortiz-de-Urbina-Gutiérrez, José María, Abid, N., Alot-Montes, Enrique, Deguara, Simeon, Serna-Ernst, José Miguel de-la, Gómez-Vives, María José, Macías-López, Ángel David, Quelle, Pablo, Rioja-Garay, Pilar, Ruiz, Marta, and Saber, Sámar

Published
2012

17. Factores de condición del atún rojo prereproductor capturado en el Estrecho de Gibraltar y su correlación con las oscilaciones atmosféricas

Author

Macías-López, Ángel David, Báez, José Carlos, Alot-Montes, Enrique, Rioja-Garay, Pilar, Gómez-Vives, María José, Ortiz-de-Urbina-Gutiérrez, José María, Real, Raimundo, Macías-López, Ángel David, Báez, José Carlos, Alot-Montes, Enrique, Rioja-Garay, Pilar, Gómez-Vives, María José, Ortiz-de-Urbina-Gutiérrez, José María, and Real, Raimundo

Published
2012

20. Some biometric relationships of East Atlantic bluefin tuna (Thunnus thynnus).

Author

Alot-Montes, Enrique, Ortiz-de-Urbina-Gutiérrez, José María, Rodriguez-Marin, Enrique, Gómez-Vives, María José, Rioja-Garay, Pilar, Ruiz, Marta, Serna-Ernst, José Miguel de-la, Macías-López, Ángel David, Alot-Montes, Enrique, Ortiz-de-Urbina-Gutiérrez, José María, Rodriguez-Marin, Enrique, Gómez-Vives, María José, Rioja-Garay, Pilar, Ruiz, Marta, Serna-Ernst, José Miguel de-la, and Macías-López, Ángel David

Published
2011

21. Standardized catch rates of albacore (thunnus alalunga bonnaterre, 1788) in the spanish surface longline fishery in the western mediterranean in the period 2009-2017

Author

García-Barcelona, Salvador, Macías-López, Ángel David, Saber, Sámar, Gómez-Vives, María José, Rioja-Garay, Pilar, Meléndez-Vallejo, María José, Ortiz-de-Urbina-Gutiérrez, José María, García-Barcelona, Salvador, Macías-López, Ángel David, Saber, Sámar, Gómez-Vives, María José, Rioja-Garay, Pilar, Meléndez-Vallejo, María José, and Ortiz-de-Urbina-Gutiérrez, José María

Abstract

Standardized relative abundance indices of albacore (Thunnus alalunga Bonnaterre, 1788) caught by the Spanish surface longline (LLALB) in the western Mediterranean Sea were estimated for the period 2009-2019. Yearly standardized CPUE were estimated through Generalized Linear Mixed Effects Models (GLMM) under a negative binomial error distribution assumption. The main factors in the standardization analysis were year and season (quarter). The index shows an increasing trend from the beginning of the series (2009) to a maximum in 2011; following a decrease up to 2013, and a relatively stable trend fluctuating around a level three and a half times lower compared to the maximum abundance for the period 2013-2019.

22. Standardized catch rates of albacore (thunnus alalunga bonnaterre, 1788) in the spanish recreational fishery in the western mediterrarrean in the period 2005-2018

Author

Saber, Sámar, Macías-López, Ángel David, García-Barcelona, Salvador, Meléndez-Vallejo, María José, Gómez-Vives, María José, Rioja-Garay, Pilar, Godoy-Garrido, María Dolores, Puerto-González, Miguel Ángel, Ortiz-de-Urbina-Gutiérrez, José María, Saber, Sámar, Macías-López, Ángel David, García-Barcelona, Salvador, Meléndez-Vallejo, María José, Gómez-Vives, María José, Rioja-Garay, Pilar, Godoy-Garrido, María Dolores, Puerto-González, Miguel Ángel, and Ortiz-de-Urbina-Gutiérrez, José María

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