Maturity and spawning of Johnius (Johnieops) sina (Cuvier) at Calicut during 1969-72

Nair, K V Somasekharan (1977) Maturity and spawning of Johnius (Johnieops) sina (Cuvier) at Calicut during 1969-72. Indian Journal of Fisheries, 24 (1&2). pp. 15-24.


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The proantage occurme. of mature fish and ova-diameter frequency in Johnius (Johnieops) sina (Cuvier) indicated pmlmged spawning of the species. The minimum size at first maturity has been fqund to be at an average size of 115 mm for females. The condition factor had the minimum value at a length of 115 mm for females and 125 mm for males, when they are considered to be mature for the first time. Sexes appeared in equal proportion in most of the months. Dominance of females in the population was noticed at ll5mm total length and upwards. Fecundity has been found to vary from 12,774 to 1,51,697 in specimens of the size range 124-174 mm.

Item Type: Article
Uncontrolled Keywords: Maturity and spawning; Johnius sina; Calicut
Subjects: Pelagic Fisheries
Divisions: CMFRI-Cochin > Marine Capture > Demersal Fisheries
Depositing User: Dr. V Mohan
Date Deposited: 02 Jun 2010 10:09
Last Modified: 09 Sep 2015 15:08

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