186 research outputs found

    IEO Studies on discards and By-catch of the Shrimper Industrial Fleet in West Africa

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    Studies on discards and by-catch on the shrimper industrial fleet in West Africa (Mauritania and Guinea Bissau)(IEO Program of Scientific observations onboard. 2010 and 2011

    What do shrimper trawlers fish in North West Africa? The issue of discards

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    In compliance with the Regulation ( 2017 1004 of the European Parliament and of the Council of 17 May 2017 on the establishment of a Union framework for the collection, management and use of data in the fisheries sector and support for scientific advice regarding the common fisheries policy (Data Collection Framework, DCF), Spain performs a monitoring program through scientific observations onboard the Spanish shrimper fishery operating in Mauritanian waters.The Spanish shrimper trawlers fishing off Mauritanian waters usually alternate the use of two different gears, depending on the target species. Outriggers are used to fish Parapenaeus longirostris and Penaeus notialis usually during daylight hauls and the classic bottom otter trawl with trawl doors baka type) is employed for a deeper fishery, especially targeting Aristeus varidens These last deep hauls are usually made at night. This fishery is characterized by capturing a great diversity of species three target species, other retained species and a significant amount of species that end up back in the sea, discard

    Descripción de patrones únicos de coloración en vivo como herramienta para la discriminación de especies de cangrejos ermitaños en la península ibérica

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    The unique colour patterns of the hermit crab species inhabiting the Iberian Peninsula and geographically close areas are studied based on colour patterns observed in live specimens either in the field or live in the laboratory. Live colour patterns are shown to be useful for differentiating species in the Paguroidea from Iberian waters. Colour information has not been frequently documented in previous studies, mainly because of difficulties in accessing live specimens. Up to 51 species are currently recorded within the study area, 45 of which are included in the present work, focusing on the distinctive colour traits for each species that can be observed in the field. A complete key for identifying the species within the study area based on colour patterns is included. This study is the first attempt to put in place this type of tool oriented to field work. Further studies will be required to complete and update this information, especially for species which are scarce or difficult to observe alive.El estudio de los patrones de coloración en ejemplares vivos observados tanto en el campo como en laboratorio, han permitido investigar la existencia de patrones de coloración distintivos para las especies de cangrejos ermitaños que habitan en la península ibérica y zonas geográficamente cercanas. Estos patrones de coloración han demostrado ser de gran utilidad en los Paguroidea de aguas Ibéricas para la identificación de especies. La información relativa al color ha sido frecuentemente obviada en el pasado, principalmente debido a las dificultades para acceder a los ejemplares vivos. En la actualidad existen alrededor de 51 especies registradas en la zona de estudio, 45 de las cuales se incluyen en el presente trabajo, poniendo el foco en los rasgos de color distintivos de cada especie que pueden observarse en el campo. Se incluye una clave completa para la identificación de las especies dentro del área de estudio basada en los patrones de color. Este estudio es el primer intento de implementar este tipo de herramienta orientada al trabajo de campo. Serán necesarios más estudios para completar y actualizar esta información, especialmente para aquellas especies que son escasas o difíciles de observar en vivo

    Lanzamiento del Proyecto International Horizonte 2020, “MISSION ATLANTIC” cartografiado y evaluación para el desarrollo sostenible del Océano Atlántico

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    Con una financiación de 11,5 millones de euros procedente del programa europeo H2020, MISSION ATLANTIC constituye la primera iniciativa en desarrollar y aplicar de forma sistemática Evaluaciones Integrales Ecosistémicas (Integrated Ecosystem Assessments, IEAs) a nivel de la cuenca atlántica

    Towards effort quantification through VMS and observers' data: the case of shrimps trawlers in Mauritanian waters

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    The Spanish shrimp trawlers is one of the most important fleets operating in Mauritania. They target 3 species: -Penaeus notialis (at 20-80 m depth) -Parapenaeus longirostris (at 100-350 m depth) -Aristeus varidens (at 400-800 m depth) in 3 types of fishing operations that can be carried out during the same day. A critical challenge is to define suitable metrics of effective fishing effort since logbooks only provide information of catches by day. Accurate CPUE obtained from these vessels could be considered good abundance indices of its target stocks, which is of paramount importance for assessment purposes. The objective of this analysis was to use Vessel Monitoring System (VMS) information to robustly infer fleet activity as well as estimate units of effort directed to each of the three target species of the Spanish trawlers operating within the EEZ of Mauritania. The estimates of trawling effort by target species obtained from VMS data show consistency in both values and temporal trends with those registered by observers on-board. The adoption of a consistent method for analysing VMS data will help to ensure that calculations of trawling effort are repeatable and comparable among studies

    SPANISH DEEP-SEA FISHERIES IN THE CECAF AREA

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    Deep-seafisheriestakeplaceatgreatdepths(between200-2000meters),oncontinentalslopes,oceanicseamounts,ridgesystemsbanks. Thesefisheriestargetdemersal/benthicspeciesusingarangeofgearsincludingbottomandmid-watertrawls,potsandlonglines. Deep-seafisheriestakeplaceinbothexclusiveeconomiczones(EEZs)andinareasbeyondnationaljurisdiction(ABNJ)

    Spain Bottom wet fish and freezer trawlers shrimp fishery - Moroccan Atlantic coast waters, 2011

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    Inventario de las pesquerías españolas en el área CECAF. Descripción de la pesca española de arrastre de marisco al fresco y congeladora en aguas de la costa Atlántica de Marruecos, 2011: visión general, localización, actividad pesquera (área de pesca, recursos explotados, especies objetivo, especies acompañantes, tipo de barco, segmento de flota, estacionalidad, duración de las mareas, puertos e indicadores de la pesquería), uso y mercados, gestión (marco jurisdiccional, régimen de gestión), estado y tendencias y fuentes de información

    DNA-barcoding Decapoda and Stomatopoda from West-Africa

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    Codificación del AND de Decápodos y Estomatópodos capturados en Costa Oeste de Áfric
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