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Flatfish discarding practices in bivalve dredge fishing off the south coast of Portugal (Algarve)
Palma, J.; Reis, C.; Andrade, J.P. (2004). Flatfish discarding practices in bivalve dredge fishing off the south coast of Portugal (Algarve), in: Geffen, A.J. et al. (Ed.) (2003). Proceedings of the Fifth International Symposium on Flatfish Ecology, Part I. Port Erin, Isle of Man, 3-7 November 2002. Journal of Sea Research, 50(2-3): pp. 129-137
In: Geffen, A.J.; Nash, R.D.M.; van der Veer, H.W. (Ed.) (2003). Proceedings of the Fifth International Symposium on Flatfish Ecology, Part I. Port Erin, Isle of Man, 3-7 November 2002. Journal of Sea Research, 50(2-3). Elsevier: Amsterdam. 87-270 pp., more
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101, more
Peer reviewed article  

Also published as

Available in Authors 
    VLIZ: Proceedings [59054]
Document type: Conference paper

Keywords
    By catch; Dredges; Fishery surveys; Mollusc fisheries; Chamelea gallina (Linnaeus, 1758) [WoRMS]; Donax trunculus Linnaeus, 1758 [WoRMS]; Spisula solida (Linnaeus, 1758) [WoRMS]; ANE, Portugal, Algarve [Marine Regions]; Marine

Authors  Top 
  • Palma, J.
  • Reis, C.
  • Andrade, J.P.

Abstract
    An evaluation of flatfish discards from bivalve dredge fishing on the south coast of Portugal (Algarve) was undertaken through fishing surveys carried out on board a professional dredge fleet. Data collection of the dredge fishery was carried out between November 2000 and February 2002. The data were compared with information gathered from abundance analysis surveys, and analysed independently of the target bivalve species (Chamelea gallina, Donnax trunculus, and Spisula solida). Flatfish and non-flatfish species accounted for 20.1% and 79.9%, respectively, of the by-catch species of the bivalve dredge fishery. Significant differences have been calculated between length composition of flatfish species in the by-catch and in the abundance surveys. This indicates an optimised performance of the bivalve dredge, which catches a small amount of undersized flatfish as by-catch.

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