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Diversity and temporal variation of peracarid fauna (Crustacea: Peracarida) in the shallow subtidal of a sandy beach: Playa América (Galicia, NW Spain)

Authors

  • Juan Moreira,

    1.  Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias, Universidade de Vigo, Vigo, Spain
    2.  Estación de Bioloxía Mariña da Graña, Universidade de Santiago de Compostela, Ferrol, Spain
    3.  Departamento de Zooloxía e Antropoloxía Física & Instituto de Acuicultura, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
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  • Loreto Gestoso,

    1.  Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias, Universidade de Vigo, Vigo, Spain
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  • Jesús S. Troncoso

    1.  Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias, Universidade de Vigo, Vigo, Spain
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  • Conflict of interest The authors declare no conflict of interests.

Juan Moreira, Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias, Campus de Lagoas-Marcosende s/n, Universidade de Vigo, 36310 Vigo, Spain. E-mail: ebmgjuan@usc.es

Abstract

Peracarids (Crustacea: Peracarida) are an important component of soft-sediment faunas and are considered good indicators of quality of water and sediments. Nevertheless, little is known about diversity of peracarid crustaceans on the shallow subtidal sediments of Playa América, a sandy beach in the Ensenada de Baiona (Galicia, NW Spain). Therefore, the peracarid fauna of its shallow subtidal zone was studied in a fine-sand site at 4-m depth from February 1996 to February 1997. Monthly sampling yielded a total of 4753 individuals belonging to 60 species. Amphipods were dominant in number of individuals and species followed by cumaceans. The assemblage showed a stable composition in species through the year and was numerically dominated by a few species, namely the amphipods Siphonoecetes kroyeranus and Microprotopus maculatus and the cumacean Pseudocuma longicorne. These species showed large monthly fluctuations in abundance, with maximal values between summer and autumn.

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