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Biometry analysis, length-weight relationship and sexual dimorphism of the Spotted Scat, Scatophagus argus (Linnaeus, 1766) (Perciformes: Scatophagidae) from Gulf of Mannar, southeast coast of India

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Title Biometry analysis, length-weight
relationship and sexual dimorphism
of the Spotted Scat, Scatophagus
argus (Linnaeus, 1766) (Perciformes:
Scatophagidae) from Gulf of Mannar,
southeast coast of India
Not Available
 
Creator Zacharia,P U
Venkatesan,V
Gandhi,V
 
Subject Scatophagus argus
biometry
length-weight
relationship
sexual dimorphism
Gulf of Mannar
 
Description Not Available
A total of 1,659 specimens of spotted scat were collected from
commercial landings in Mandapam along Gulf of Mannar for
studying biometry, length-weight relationship and sexual
dimorphism. Biometry was carried out to analyse the growth
rate of body parts in relation to the standard length. Fourteen
morphometric characteristics were examined. The study revealed
that the fastest growth rate was in depth of the body followed
by pre-dorsal and pre-anal length and lowest in the eye
diameter. The length-weight relationship was also carried out
for 1,141 females ranging in TL from 140 - 340 mm and 518
males in the range of 50 - 117 mm. The equation of W =
0.005373 L2.842 and W = 0.002152 L2.479were derived for male
and female respectively. The relationship revealed that the value
of exponent ‘’b’’ was considerably below 3, which might be due
to the deep, strongly compressed body. Analysis of covariance
revealed that there were significant differences (P< 0.01)
between sexes. Male and female spotted scat could be
differentiated by head shape and colour of body. Females were
larger and heavier than males of the same length group.
Not Available
 
Date 2021-09-16T06:56:53Z
2021-09-16T06:56:53Z
2013
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63086
 
Language English
 
Relation Not Available
 
Publisher Marine Biological Association of India