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Title Size selectivity of square mesh codends for saurida tumbil (Bloch 1795) and nibea maculata (bloch & schneider, 1801) in Bay of Bengal
 
Names Prakash, R.R.
Rajeswari, G.
Sreedhar, U.
Kumar, M.S.
Date Issued 2013 (iso8601)
Abstract Saurida tumbil and Nibea maculata are widely
exploited by the trawl fishery. Due to the use of
conventional diamond mesh codends of small mesh
size in the trawl nets, large quantities of juveniles
of these species are landed along the east coast of
India. The size selectivity of 40 mm square mesh
codend for S. tumbil and N. maculata was studied
with a 30 m demersal trawl, following covered
codend method. The L25, L50 and L75 values for S.
tumbil with 40 mm square mesh codend was
estimated as 16.2, 19.3 and 22.5 cm respectively.
selection range, selection factor and selection ratio
for S. tumbil were 6.2, 4.8 and 1.5 respectively. The
L25, L50 and L75 values for N. maculata with 40 mm
square mesh codend were 9.3, 10.9, and 12.5 cm
respectively. Selection range, selection factor and
Selection ratio for N. maculata were 3.2, 2.7 and 0.8
respectively. Characteristic smooth sigmoid curves
typical for towed gears were obtained for S. tumbil
and N. maculata.
Genre Article
Topic codend selectivity
Identifier Fishery Technology 2013: 50 (3), 285-288