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Size-groups of Choodai taken by different nets and in different localities

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Relation http://eprints.cmfri.org.in/1864/
 
Title Size-groups of Choodai taken by different
nets and in different localities
 
Creator Sekharan, K V
 
Subject Pelagic Fisheries
 
Description At present, the boats fishing choodai do not normally venture out to
more than 6-8 miles off the shore. Within this zone, there are separate
fishing grounds for various types of nets which differ, among other things,
in mesh size. But an analysis of the size-groups taken by them shows that
the catches as a whole are supported mostly by the 0-year-class. This indicates
that given the indices of abundance and the corresponding rate of
growth of an year-class, it should be theoretically possible, from a study
of mesh-selection, to determine in advance the period at which it (the year class)
would enter the catches of a net; perhaps the approximate amount
of total catches that could be expected during a particular season could
also be estimated. The data collected should further be important from
the point of view of evolving a proper exploitation policy. Investigation
of selection has also to some extent become urgent in view of a controversy
that has recently arisen in the fishery. The men who use shore-seines fish
choodai within the coastal belt, 1-1.5 miles from the shore, and they feel
that the operation of gill-nets both within and outside this range is detrimental
to their trade. As there are indications that the use of gill-nets is
hkely to increase rather than diminish in the coming years, this dispute is
likely to become more serious in the future. Obviously, an important point
to be clarified in this connection is whether both gill-nets and shore-seines
operate on the same size-group or age-group at any time of the year.
 
Publisher CMFRI/ICAR
 
Date 1959
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1864/1/Article_03.pdf
Sekharan, K V (1959) Size-groups of Choodai taken by different nets and in different localities. Indian Journal of Fisheries, 6 (1). pp. 1-29.