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Distribution pattern of threadfin breams along North Tamil Nadu and south Andhra coasts

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Relation http://eprints.cmfri.org.in/298/
 
Title Distribution pattern of threadfin breams along
North Tamil Nadu and south Andhra coasts
 
Creator Vivekanandan, E
 
Subject Threadfin breams
 
Description Catch rate and biomass of threadfin breams were estimated for north Tamil Nadu - south Andhra coast
based on exploratory trawling conducted by M. V. Matsyajeevan and R. V. Cadalmin III. In the entire region
explored by M. V. Matsyajeevan, the catch rate was 2.2 kg/hr and the biomass was 0.001 t/km'. In the
region explored by R. V. Cadalmin III, the catch rate was 0.7 kg/hr and the biomass was 0.002 t/kml
Threadfin breams occurred upto a depth of 220 m and the highest catch rate of 71.7 kg/hr was obtained
in 101-110 m depth.
Of the 5 species that constituted the threadfin bream catch, Nemipterus japonicus formed 55.1%. Biological
studies revealed a positive correlation between depth and length of N. japonicus. About 78% of N. japonicus
in 6-10 m depth was immature and the percentage of immature individuals decreased with increasing
depth. With increasing depth, the percentage of female with ripe ovary increased. N. japonicus in shallow
waters were observed to feed mostly on prawn and those in deeper waters mostly on fish and
crab.
 
Publisher CMFRI/ICAR
 
Date 1990
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/298/2/Article_03.pdf
Vivekanandan, E (1990) Distribution pattern of threadfin breams along North Tamil Nadu and south Andhra coasts. Indian Journal of Fisheries, 37 (4). pp. 269-280.