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Issue Aquat. Living Resour.
Volume 17, Number 2, April-June 2004
Page(s) 231 - 234
DOI 10.1051/alr:2004015

Aquat. Living Resour. 17 (2004) 231-234
DOI: 10.1051/alr:2004015

Note

Skate and ray species composition in mainland Portugal from the commercial landings

Pedro Bordalo Machado1, Leonel Serrano Gordo2 and Ivone Figueiredo1

1  Departamento de Recursos Marinhos, Instituto de Investigação Agrária e das Pescas - IPIMAR, Av. de Brasília, 1449-006 Lisboa, Portugal
2  Departamento de Zoologia e Antropologia e Instituto de Oceanografia, Faculdade de Ciências da Universidade de Lisboa, Bloco C2 - Campo Grande, 1749-016 Lisboa, Portugal

(Received 21 October 2003; Accepted 7 April 2004 )

Abstract
Skates and rays constitute important resources for several fishing fleets of mainland Portugal with total annual landings around 1500 tons. Regardless of their commercial interest, landed specimens are not differentiated at species level. To get a preliminary insight into the species diversity of landings, a pilot sampling program on skates and rays composition was executed in the two ports of mainland Portugal with the highest landings of this group- Matosinhos and Peniche. Sampling was carried out once a month in each port between January and April 2001. Based on the information obtained, a new sampling plan was established for the artisanal fishery (gillnet fleet), at each landing port. This sampling program was conducted until the end of 2001. A total of eight species were identified. Raja brachyura and Raja clavata were the most common species found in the landings of each port, while Raja miraletus was only occasionally recorded. Rajidae landings in mainland Portugal are mainly by-catch of the artisanal segment of the commercial fishing fleet.


Key words: Fisheries / Rajidae / Sampling / Species composition / Atlantic Ocean

Corresponding author: bmachado@ipimar.pt

© EDP Sciences, IFREMER, IRD 2004


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