Decapod crustacean larval communities in the Balearic Sea (western Mediterranean): Seasonal composition, horizontal and vertical distribution patterns
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AuthorsTorres, A.P. (Asvin Pérez); dos-Santos, A. (Antonina); Balbín, R. (Rosa); Alemany, F. (Francisco); Massutí, E. (Enric); Reglero, P. (Patricia)
Vertical distribution patterns
Decapod crustaceans are the main target species of deepwater bottomtrawl fisheries in the Balearic Sea but little is known about their larval stages. This work focuses on the species composition of the decapod larval community, describing the main spatio-temporal assemblages and assessing their vertical distribution. Mesozooplankton sampling was carried out using depth-stratified sampling devices at two stations located over the shelf break and themid slope, in the north-western and southern Mallorca in late autumn 2009 and summer 2010. Differences among decapod larvae communities, in terms of composition, adult's habitat such as pelagic or benthic, and distribution patternswere observed between seasons, areas and station. Results showed that for both seasonsmost species and developmental stages aggregatedwithin the upperwater column (above 75 mdepth) and showed higher biodiversity in summer compared to late autumn. Most abundant species were pelagic prawns (e.g., Sergestidae) ...
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