Artificial marine habitats favour a single fish species on a long-term scale: the dominance of Boops boops around off-shore fish cages

  1. Rodrigo Riera 1
  2. Pablo Sanchez-Jerez 2
  3. Myriam Rodriguez 1
  4. Oscar Monterroso 1
  1. 1 Centro de Investigaciones Medioambientales del Atlántico (CIMA SL), Arzobispo Elías Yanes, 44, 38206 La Laguna, Tenerife, Canary Islands, Spain
  2. 2 Departamento de Ciencias del Mar y Biología Aplicada, Universidad de Alicante, 99, 03080 Alicante, Spain.
Aldizkaria:
Scientia Marina

ISSN: 0214-8358

Argitalpen urtea: 2014

Alea: 78

Zenbakia: 4

Orrialdeak: 505-510

Mota: Artikulua

DOI: 10.3989/SCIMAR.04083.08A DIALNET GOOGLE SCHOLAR lock_openSarbide irekia editor

Beste argitalpen batzuk: Scientia Marina

Garapen Iraunkorreko Helburuak

Laburpena

Las jaulas de acuicultura en mar abierto constituyen un hábitat artificial nuevo que puede afectar a las poblaciones de peces pelágicos porque constituyen una fuente importante de alimentación para las comunidades de peces salvajes. Esta congregación tiene consecuencias ecológicas notables en áreas caracterizadas por ecosistemas empobrecidos como ocurre en el archipiélago canario (Atlántico Noreste). Sin embargo, este nuevo hábitat puede encontrarse dominado por una única especie, limitando sus efectos ecológicos positivos. Las comunidades salvajes de peces asociadas a jaulas en mar abierto localizadas en la costa noreste de la isla de Tenerife (Islas Canarias) fueron muestreadas a lo largo de 6 años. La estructura de la comunidad íctica varió significativamente entre las localidades de las jaulas y los controles (>500 m de distancia de las jaulas), con abundancias que fueron 13 veces superiores en las jaulas. Estas diferencias fueron debidas principalmente a la dominancia de la boga (Boops boops) alrededor de las jaulas de acuicultura. Esta tendencia fue consistente a lo largo del período de estudio (2004-2009), afectando a las capturas de los pescadores locales. La presencia de las jaulas de acuicultura afectó de forma significativa las poblaciones de peces en el área de estudio, con un incremento de la biomasa y abundancia de una especie, la boga, que determinó cambios en la composición de las especies

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