Capturas incidentales de las pesquerías de arrastre de fondo de crustáceos y peces al sur de Portugal (Algarve)

Autores/as

  • Maria Esmeralda Costa Centro de Ciências do Mar (CCMAR), Universidade do Algarve (FCMA)
  • Karim Erzini Centro de Ciências do Mar (CCMAR), Universidade do Algarve (FCMA)
  • Teresa Cerveira Borges Centro de Ciências do Mar (CCMAR), Universidade do Algarve (FCMA)

DOI:

https://doi.org/10.3989/scimar.2008.72n4801

Palabras clave:

capturas incidentales, pesquería de arrastre, peces, crustáceos, Algarve, Portugal

Resumen


Se ha cuantificado la composición de las capturas, sus tasas, las capturas incidentales y los descartes de dos pesquerías industriales de arrastre de fondo dirigidas a crustáceos y peces del sur del Portugal (Algarve). Se realizó un muestreo estratificado mediante observadores a bordo desde febrero de 1999 hasta marzo de 2001, utilizándose los datos recogidos en 52 embarques y 165 lances. Las especies objetivos de la pesquería comercial fueron: la gamba roja (Aristeus antennatus), la gamba blanca (Parapennaeus longirostris), la cigala (Nephrops norvegicus), varias especies de espáridos de los géneros Diplodus y Pagellus, jureles (Trachurus spp.) y merluza (Merluccius merluccius). Estas pesquerías de arrastre de fondo se caracterizaron por la presencia de considerables cantidades de capturas incidentales, que variaron entre un 59.5 y un 80.4% del total de las capturas de crustáceos y peces, respectivamente. Se identificaron 255 especies pertenecientes a 15 clases de organismos (137 vertebrados, 112 invertebrados y 6 algas). Se observó que la mayor biodiversidad se produjo en los arrastreros dirigidos a la captura de crustáceos. El componente dominante de las capturas incidentales en los arrastreros dirigidos a crustáceos y peces fueron los teleósteos (45.6 y 37.8%, respectivamente), seguidos por los crustáceos (14.6 y 11.5%). Se discute la influencia de varios factores (i.e. la profundidad, el tipo de aparejo, la duración del lance o la estación del año) en las capturas incidentales y los descartes.

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Citas

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2008-12-30

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1.
Esmeralda Costa M, Erzini K, Cerveira Borges T. Capturas incidentales de las pesquerías de arrastre de fondo de crustáceos y peces al sur de Portugal (Algarve). Sci. mar. [Internet]. 30 de diciembre de 2008 [citado 22 de julio de 2024];72(4):801-14. Disponible en: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1036

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