Species composition and bycatches of a new crustacean trawl in Chile

Dante Queirolo, Karim Erzini, Carlos F. Hurtado, Erick Gaete, Milagrosa C. Soriguer

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The species composition and bycatches of a new trawl for crustaceans (Heterocarpus reedi, Cervimunida johni and Pleuroncodes monodon) was studied in central Chile between 2007 and 2009. The spatial and temporal variations of the catch composition were analyzed using univariate and multivariate comparison techniques. In 289 trawl hauls, 72 taxa were recorded, with target species accounting for most of the catch, while the bycatch consisted mainly of Merluccius gayi, Hippoglossina macrops, Coelorinchus aconcagua, Epigonus crassicaudus and Platymera gaudichaudii. 14 species of elasmobranchs were identified, and at least one of these species was present in 50% of the hauls made. The classification and ordination methods showed the existence of three groups, each one associated with a target species, with no significant spatial and temporal effects. The information obtained in this study represents the basis for setting targets in order to reduce the bycatch captured by this trawl. The focused strategy on the most recurring and sensitive species for these fisheries is also discussed.

Original languageEnglish
Pages (from-to)149-159
Number of pages11
JournalFisheries Research
Volume110
Issue number1
DOIs
StatePublished - Jun 2011
Externally publishedYes

Keywords

  • Bycatch
  • Catch composition
  • Chile
  • Crustacean trawl

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