.MORPHOMETRY, LENGTH-WEIGHT RELATIONSHIP AND BIOLOGY OF SEPIA ACULEATA (d' ORBIGNY, 1848) FROM MUMBAI COAST, INDIA
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Authors
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Manmeet Kaur Nalwa
Central Institute of Fisheries Education, (Deemed University) ICAR, Seven Bungalows,
Versova, Mumbai-61, India
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Rajeev Kumar
Central Institute of Fisheries Education, (Deemed University) ICAR, Seven Bungalows,
Versova, Mumbai-61, India
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A. K. Jaiswar
Central Institute of Fisheries Education, (Deemed University) ICAR, Seven Bungalows,
Versova, Mumbai-61, India
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R. P. Swamy
Central Institute of Fisheries Education, (Deemed University) ICAR, Seven Bungalows,
Versova, Mumbai-61, India
Abstract
Seventeen morphometric characters of Sepia aculeata of Mumbai coast
have been studied and the relationships of morphometric characters with dorsal
mantle length (DML) were established. The characters compared showed a
fair to high degree of correlation ('r' 0.63-0.99). Number of arm suckers and
shell rings were related with DML. The shell rings also showed high degree of
correlation with DML ('r' 0.79-0.95). However, the relationship between arm
suckers and DML was not so good ('r' 0.1-0.4). The length-weight relationship
is described as W= 0.1821336 L2
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801102
• Food and feeding analysis confirm the
carnivorous feeding behaviour of the species. Mature females found in all
months indicate that it has prolonged spawning season with two peaks,
September and March-April. Absolute Fecundity ranged from 214 to 4143
eggs.
Keywords: Sepia aculeata, morphometry, length-weight relationship,
fecundity
