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Free Content Epibenthic assemblage associated with scallop (Zygochlamys patagonica) beds in the Argentinian shelf

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By-catch samples were taken in Patagonian scallop (Zygochlamys patagonica King and Broderip, 1832) beds during a survey evaluation on the Argentinian continental shelf between 38–46°S in 1995, prior to the development of the present commercial fishery. The invertebrate epibenthic fauna was identified and the community structure was analyzed using univariate and multivariate methods. Patagonian scallop was dominant in weight. In four geographical areas a characteristic assemblage of associated species (sponge Tedania sp., anemone Actinostola crassicornis, echinoderns Ophiactis asperula, Ophiacanta vivipara, Ophiuroglypa lymani, Sterechinus agassizii, Austrocidaris canaliculata, Cosmasterias lurida, Ctenodiscus australis, Psolus patagonicus and Pseudocnus dubiosus leoninus) could be defined by cluster analysis. Areas differed in biomass of scallops and by-catch and also in the relative presence of scallop epibionts. This study gives baseline information on the undisturbed condition of natural communities and will permit future evaluation of structural changes due to fishery impact, since commercial fishing has taken place on the beds since 1996.

Document Type: Research Article

Publication date: January 1, 2002

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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