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Fishery and biology of threadfin bream, Nemipterus mesoprion from Mangalore-Malpe

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Relation http://eprints.cmfri.org.in/82/
http://www.cmfri.org.in
 
Title Fishery and biology of threadfin bream,
Nemipterus mesoprion from Mangalore-Malpe
 
Creator Zacharia, P U
Nataraja, G D
 
Subject Demersal Fisheries
 
Description The landings of threadfin breams recorded 8 fold increase during 1989 – 1998
period while the catch rate showed three-fold increase. Maximum catch and
catch rate was observed in September-October. N. mesoprion has taken over
the place of N. japonicus by forming 64% of the fishery. The mean size increased
from 127 to 164 mm. Significant differences were found in the length-weight
relationship between sexes. Males outnumbered females in all the months and
the overall sex ratio was M-1: F-0.70, which significantly departs from the expected
1:1 ratio. The minimum size at first maturity of males was 145 mm and
female, 125 mm. Spawning was prolonged with peak during August-November.
The peak spawning indicated by GSI, is in general agreement with the percentage
occurrence of maturity stages in different months. The fecundity ranged
from 7,444 to 49,689 eggs. The stomach content analysis revealed that the species
feed mainly on crustaceans.
 
Date 2003
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/82/1/IJF%2C_Jan-Mar_-_1.pdf
Zacharia, P U and Nataraja, G D (2003) Fishery and biology of threadfin bream, Nemipterus mesoprion from Mangalore-Malpe. Indian Journal of Fisheries, 50 (1). pp. 1-10.