BIOLOGY OF THE THREADFIN BREAM, NEMIPTERUS JAPONICUS (BLOCK)


120 / 334

Authors

  • B Krishnamoorthi Central Marine Fisheries Research Institute; Sub-station, Visakhapatnam

Abstract

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.

Downloads

Download data is not yet available.

Author Biography

  • B Krishnamoorthi, Central Marine Fisheries Research Institute; Sub-station, Visakhapatnam
    Central Marine Fisheries Research Institute; Sub-station, Visakhapatnam

Downloads

Issue

Vol. 18 No. 1 & 2 (1971)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Krishnamoorthi, B. (2011). BIOLOGY OF THE THREADFIN BREAM, NEMIPTERUS JAPONICUS (BLOCK). Indian Journal of Fisheries, 18(1 & 2), 1-21. https://epubs.icar.org.in/index.php/IJF/article/view/13160