The influence of mesh size and shape on the size selection of European hake (<em>Merluccius merluccius</em>) in demersal trawl codends: An investigation based on fish morphology and simulation of mesh geometry

Adnan Tokaç; Bent Herrmann; Gökhan Gökçe; Ludvig Ahm Krag; Davud Sadegh Nezhad

doi:10.3989/scimar.04764.18A

Autores/as

Adnan Tokaç Ege University https://orcid.org/0000-0002-2968-7315
Bent Herrmann SINTEF Ocean, Fishing Gear Technology - Norwegian College of Fishery and Aquatic Science, University of Tromsø https://orcid.org/0000-0003-1325-6198
Gökhan Gökçe Çukurova University https://orcid.org/0000-0003-1830-0733
Ludvig Ahm Krag DTU Aqua, Technical University of Denmark https://orcid.org/0000-0002-1531-1499
Davud Sadegh Nezhad Ege University https://orcid.org/0000-0003-3725-9705

DOI:

https://doi.org/10.3989/scimar.04764.18A

Palabras clave:

merluza europea, red de arrastre, selectividad de tamaño, morfología de los peces, geometría de malla, mar Mediterráneo

Resumen

La merluza europea (Merluccius merluccius) es una especie comercial importante para varias pesquerías europeas de arrastre de fondo. Por lo tanto, la comprensión de la influencia del tamaño y la forma de la malla de red en la selección del tamaño de la merluza Europea es fundamental para definir medidas técnicas para las pesquerías dirigidas a esta especie. En base a los datos de morfología recolectados en merluza Europea, se investigó la influencia del tamaño de malla y la forma en la selectividad del tamaño de la red de arrastre de fondo mediante simulación utilizando la metodología FISHSELECT previamente aplicada con éxito para otras especies. La selección del tamaño predicho para la merluza Europea coincidió con los resultados experimentales previos para una amplia gama de tamaños de malla si se suponía que las mallas de red tenían un ángulo de apertura relativamente pequeño, entre 20 y 40 grados, durante la pesca de arrastre. Este estudio permite una predicción detallada de la selectividad de tamaño para la merluza Europea y ofrece una posible explicación para los resultados previos de selectividad de tamaño experimental.

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