Data on sharks in NAFO Divisions 3LMNO: 1991-1998

A review of the species composition, distribution and abundance of sharks in both the Spanish commercial catches (1991-98) and research surveys (1988-98) are carried out. Shark species are by-catches of Greenland halibut fishery. The proportion of shark species in the total catch is small and the ma...

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Bibliographic Details
Main Authors: Durán-Muñoz, Pablo, Junquera, Susana, Álvarez-Pérez, María Soledad
Format: Report
Language:English
Published: 1999
Subjects:
Pesquerías
Centro Oceanográfico de Vigo
sharks
black dogfish
boreal shark
length distribution
Grand bank
Flemish Cap
Greenland
North Atlantic
Northwest Atlantic
Online Access:http://hdl.handle.net/10508/751
http://hdl.handle.net/10261/328981
Description
Summary:A review of the species composition, distribution and abundance of sharks in both the Spanish commercial catches (1991-98) and research surveys (1988-98) are carried out. Shark species are by-catches of Greenland halibut fishery. The proportion of shark species in the total catch is small and the main retained species is the black dogfish, whereas the main discard is the boreal shark. Since 1996 the retained proportion of black dogfish increase notably, as well as the proportion of total sharks. In the surveys this shark is the species with the highest biomass index. Black dogfish is found in the deepest waters. The length range of black dogfish is mainly between 50 and 80 cm, with a mode about 62-63 cm. No evident geographic pattern in the length distribution is observed during the studied period.

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