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Observations on some aspects of biology of the Croakers Johnius (Johninieops) dussumieri (Cuvier) and Johnius Johnius) carutta Bloch from Kakinada

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Title Observations on some aspects of biology of the Croakers Johnius (Johninieops) dussumieri (Cuvier) and Johnius Johnius) carutta Bloch from Kakinada
 
Creator Murty, V Sriramachandra
 
Subject Demersal Fishes
Fish and Fisheries
 
Description Observations on some aspects of biology of Johnius dussumieri and J. carutta are made from trawler catches
of Kakinada. It is shown that dussumieri spawns during March-August period. This species attains first maturity at a total length of 110 mm. There is a predominance of females in larger length groups. The length-weight relationship of / . dussumieri follows the equation log w = -4.84511 -|- 2.96347 log L. The fluctuations
in relative condition factor seem to be related to gonad cycle. Individuals of/. carutta attain first maturity at a total length of 155 mm. This species is a fractional
spawner releasing the ripe ova in two spawning acts during the single spawning season which appears to extend
from January to June. In this species also, as in dussumieri, there is a predominance of females in larger
lengths. The length-weight relationship in / . carutta is calculated to be log W = -5.43389+ 3.23343 log L.
 
Publisher MBAI
 
Date 1979
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1497/1/Srirama_77-85.pdf
Murty, V Sriramachandra (1979) Observations on some aspects of biology of the Croakers Johnius (Johninieops) dussumieri (Cuvier) and Johnius Johnius) carutta Bloch from Kakinada. Journal of the Marine Biological Association of India, 21 (1 & 2). pp. 77-85.