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Latitudinal and bathymetric distribution patterns of ophiuroids (Echinodermata: Ophiuroidea) on scallop fishing grounds at the shelf-break frontal system, south-western Atlantic

Published online by Cambridge University Press:  20 December 2013

Mariana Escolar ,
Daniel Raúl Hernández  and
Claudia Silvia Bremec
Mariana Escolar*
Affiliation:
Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo Victoria Ocampo 1, B7602HSA, Mar del Plata, Argentina
Daniel Raúl Hernández
Affiliation:
Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo Victoria Ocampo 1, B7602HSA, Mar del Plata, Argentina
Claudia Silvia Bremec
Affiliation:
Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo Victoria Ocampo 1, B7602HSA, Mar del Plata, Argentina Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Dean Funes 3250, Mar del Plata, Argentina
*
Correspondence should be addressed to: M. Escolar, Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo Victoria Ocampo No. 1, B7602HSA, Mar del Plata, Argentina email: marianaescolar@inidep.gob.ar
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Abstract

Ophiuroidea represents the dominant invertebrate group in Patagonian scallop fishery by-catch in the south-western Atlantic. This study presents information that brings forward the spatial patterns and abundance of the most abundant species in the benthic community associated with this fishery at the shelf-break front in the Argentine Sea, between 37° and 44°S during the period 2002–2005. Ophiactis asperula, Ophiacantha vivipara, Ophiura (Ophiuroglypha) lymani and Gorgonocephalus chilensis show a latitudinal and bathymetric distribution pattern, explained by their natural distributional ranges and feeding habits. Our results indicate that the abundance and distribution of these species are not related to scallop fishing activities.

Keywords

ophiuroidsdistribution patternlatitudedepthscallop fishing groundssouth-western Atlantic Ocean
Type
Research Article
Information
Marine Biodiversity Records , Volume 6 , 2013 , e137
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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