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Co-occurrence and the relative abundance of narrow and broad corseletted frigate mackerels Auxis thazard (Lacepede) and Auxis rochei (Risso), around Ceylon

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Relation http://eprints.cmfri.org.in/2745/
 
Title Co-occurrence and the relative abundance of narrow and broad
corseletted frigate mackerels Auxis thazard (Lacepede) and
Auxis rochei (Risso), around Ceylon
 
Creator Sivasubramaniam, K
 
Subject Tuna fisheries
 
Description Both Auxis thazard and A. rochet appear almost always in mixed schools and rarely as independent
schools, in the Ceylon waters. The relative proportion of the two species, entering the fishery each year, is
dependent more on the size compositions of these species and of the other species in the mixed schools than
on area or season. Seasonal and annual variations in the catch rate of those species are discussed. The
relative densities of distribution of the frigate mackeiels around Ceylon are given. Size and season of entry
of these species into the troll and driftnet fisheries have also been determined. Selectivity of the different
types of geais used in Ceylon waters is also discussed in relation to these two species.
 
Date 1973
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/2745/1/Article_38.pdf
Sivasubramaniam, K (1973) Co-occurrence and the relative abundance of narrow and broad corseletted frigate mackerels Auxis thazard (Lacepede) and Auxis rochei (Risso), around Ceylon. In: Proceedings of the symposium on living resources of the seas around India, 1973, Mandapam Camp.