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Biology of the threadfin bream, Nemipterus japonicus (block)

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Relation http://eprints.cmfri.org.in/1318/
 
Title Biology of the threadfin bream,
Nemipterus japonicus (block)
 
Creator Krishnamoorthi, B
 
Subject Threadfin Breams
 
Description Nemipterus Japonicus attains an average length of 150 mm in the I year; 210 mm
at the end of II year; and 240 mm at the end of III year. The fishery along the Andhra-
Orissa coast is supported by fish which have completed one year. November marks the
commencement of spawning and N. japonicus may spawn for the first time at 160-170 mm
and for a second time, perhaps, at 220 mm. N. japonicus is undoubtedly a carnivore, feeds
substantially on crustaceans, molluscs, annelids and echinoderms in that order of abundance
and in one of the 1,726 stomachs examined over a three year period, vegetable matter was
encountered. It is actively predaceous and possibly a sight-feeder. There was a certain
degree of regurgitation, particularly during the spawning period from November to March.
The feeding intensity did not increase with an increase in size, but the nature of food components
was size-dependent. There was a significant increase in the feeding intensity as A''.
japonicus advanced to maturity. The peak catches in the fishery coincided or followed
peaks in feeding intensity.
 
Publisher CMFIR/ICAR
 
Date 1971
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1318/1/Article_03.pdf
Krishnamoorthi, B (1971) Biology of the threadfin bream, Nemipterus japonicus (block). Indian Journal of Fisheries, 18 (1&2). pp. 1-21.