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Maturation and spawning of the whitefish, Lactarius lactarius (Bloch and Schneider, 1801) (Family Lactariidae) along the Karnataka coast, India

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Title Maturation and spawning of the whitefish, Lactarius lactarius (Bloch and Schneider, 1801) (Family Lactariidae) along the Karnataka coast, India
Not Available
 
Creator Zacharia,P U
Jayabalan,N
 
Subject Maturation and spawning
Gonado-Somatic Index
fecundity
size at first maturity
Relative Condition Factor
 
Description Not Available
Maturation and spawning of the whitefish, Lactarius lactarius was studied by collecting samples from
Mangalore, Malpe and Karwar landing centres. Monthly Gonado-Somatic Index values of males and
females were found to increase from August and reach the highest in February indicating breeding activities.
The Kn values showed an increasing trend from October reaching a minor peak in February which
coincides with the peak spawning.. Higher percentage of fully mature testes and ovaries occurred during
November-April indicating peak spawning activities. Kn values were the lowest in the length group 130-139 mm for both males and females. Length at first maturity was determined as 131 mm for males and 133 mm females. Sex ratio indicates dominance of males up to 155 mm and females were present above 215 mm only. Fecundity varied from 7,042 to 53,275 eggs. Relationship of fecundity to ovary weight,
body weight and total length exhibited a linear trend.
Not Available
 
Date 2021-09-15T08:30:14Z
2021-09-15T08:30:14Z
2007
 
Type Article
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62129
 
Language English
 
Relation Not Available
 
Publisher MBAI