Release efficiency and selectivity of four different square mesh panel configurations in the Basque mixed bottom trawl fishery

  1. Cuende, Elsa 1
  2. Arregi, Luis 1
  3. Herrmann, Bent 2
  4. Sistiaga, Manu 3
  5. Basterretxea, Mikel 1
  1. 1 AZTI-Tecnalia, Marine Research Division
  2. 2 SINTEF Ocean, Fishing Gear Technology - The Arctic University of Norway
  3. 3 Instituto de Investigación Marina
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    Instituto de Investigación Marina

    Coímbra, Portugal

    ROR https://ror.org/03r8hgy04

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Revista:
Scientia Marina

ISSN: 0214-8358

Año de publicación: 2020

Volumen: 84

Número: 1

Páginas: 39-47

Tipo: Artículo

DOI: 10.3989/SCIMAR.04975.17A DIALNET GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Scientia Marina

Resumen

La reducción de descartes en la pesquería de arrastre del País Vasco supone un problema importante. En 2006, se introdujo en la reglamentación la posibilidad de usar un Panel de Malla Cuadrada (SMP) en la zona anterior al copo para mejorar la selectividad de la red. Sin embargo, estudios recientes manifiestan que la eficiencia de escape de los peces es baja debido a la falta de contacto selectivo entre el pez y el panel. En este estudio, analizamos la eficiencia de diferentes configuraciones del SMP. Se analizó el efecto de luces LED colocadas en distintas posiciones, el efecto del tamaño del SMP y su localización. Estudiamos la merluza (Merluccius merluccius) y la bacaladilla (Micromesistius poutassou). La posición de las LED demostró no tener ningún efecto significativo sobre la eficiencia de escape del SMP para ninguna de las dos especies. Sin embargo, aumentar el área del panel tuvo un efecto significativo en la eficiencia de escape de la bacaladilla, mientras que el cambio de posición del SMP incrementó la eficiencia de escape de la merluza a través del SMP. Estos resultados muestran el reto que supone mejorar la selectividad de un arte de pesca simultáneamente para especies demersales con comportamientos diferentes.

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Información de financiación

We would like to thank the editor and two anonymous reviewers for their valuable comments, which have certainly improved the manuscript. We thank the Spanish Ministry of Agriculture, Fisheries, Food and Environment for funding the research and for use of the R/V Emma Bardan, and we thank the crew of the Emma Bardan for their valuable assistance during the study.

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