Determinación in situ del contacto de redes de arrastre de fondo

Translated title of the contribution: In situ determination of bottom trawl gear contact

Teófilo Melo, DANTE QUEIROLO PALMA, Carlos Hurtado, Erick Gaete

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Tests were carried out in an attempt to determinine the moment at which the trawl gear utilized in demersal crustacean fisheries came into effective contact with the bottom. Results of the determination permit clear definition of effective tow duration, as this is an essential parameter for estimations of abundance carried out by the swept-area method. This paper presents the results obtained using a contact sensor that registers tilt angle of the footrope, permitting continuous monitoring of the net performance on the seafloor. The measurements of the tow duration with the contact sensor are compared with the method typically used, and a discussion is presented of the advantages of the new method for obtaining estimations of abundance.

Translated title of the contributionIn situ determination of bottom trawl gear contact
Original languageSpanish
Pages (from-to)91-97
Number of pages7
JournalInvestigaciones Marinas
Volume32
Issue number2
StatePublished - 1 Dec 2004

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