Selectividad de artes de enmalle (betas y trasmallo) en el Egeo septentrional, Turquía

Autores/as

  • F. Saadet Karakulak Faculty of Fisheries, Istanbul University
  • Hakan Erk Faculty of Fisheries, Istanbul University

DOI:

https://doi.org/10.3989/scimar.2008.72n3527

Palabras clave:

beta, trasmallo, selectividad, método SELECT, mar Egeo, Turquía

Resumen


Se realizaron ensayos de pesca con betas y trasmallos en el Egeo septentrional desde marzo de 2004 a febrero de 2005. Se utilizaron cuatro luces de malla distintas (16, 18, 20 y 22 mm) tanto para las betas como para el paño interno de los trasmallos. Se estimaron los parámetros de selectividad de las cinco especies más importantes capturadas por ambos artes: boga (Boops boops), raspallón (Diplodus annularis), salmonete de roca (Mullus surmuletus), aligote (Pagellus acarne) y chucla (Spicara maena). Se utilizó el método SELECT para la estimación de los parámetros de selectividad de varios modelos. La composición en tallas de la captura así como la proporción de las distintas especies capturadas por las betas y trasmallos fueron diferentes. La distribución de frecuencias de tallas de las especies capturadas por ambos artes fueron significativamente diferentes. El modelo de curva de selectividad bimodal fue el que mejor se ajustó a los datos de betas y trasmallos, y se encontraron muy pocas diferencias entre las longitudes modales de ambos artes. No obstante, se encontró una diferencia clara en la eficiencia de captura. Las tasas de captura más altas correspondieron a los trasmallos. Teniendo en cuenta que con betas y trasmallos de luz de malla de 16 mm se obtienen muchas especies que son posteriormente descartadas así como gran cantidad de peces pequeños, parece claro que estas redes no son convenientes para la pesquería. La luz de malla de 18 mm es la mejor para estas pesquerías multiespecíficas. El uso de paños con esta luz de malla resultaría en una reducción considerable del número de individuos de pequeña talla así como de las especies descartadas.

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Publicado

2008-09-30

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1.
Saadet Karakulak F, Erk H. Selectividad de artes de enmalle (betas y trasmallo) en el Egeo septentrional, Turquía. Sci. mar. [Internet]. 30 de septiembre de 2008 [citado 22 de julio de 2024];72(3):527-40. Disponible en: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1010

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