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Larval rearing, spat production and juvenile growth of the blood clam Anadara granosa

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Relation http://eprints.cmfri.org.in/804/
 
Title Larval rearing, spat production and juvenile growth of the blood clam Anadara granosa
 
Creator Muthiah, P
Narasimham, K A
Gopinathan, C P
Sundararajan, D
 
Subject Hatchery
Clam
 
Description The blood clam A d r u gmtwsa spawned in the Shdl6lsh Hatchery Laboratory, Tuf icorin on
two occasions. The fertilised eggs measured 50-60~in diameter, morula larvae developed in 3 4h m
and the trochophorc stage was reached in 5 hrs. The straigb t hinge stage was attained in 20-26 hrs
after fertilimtion and these larvae measured 8 3I~en ah and 65.5~h eight. Advanced umbo stage
was reached on day 12 (size 155.3 x 140.5~) and on day 16, majority of the larvae were in
pedivcliger stage with an average size of 182.7 x 162.9~. SettIement began on day 16 and majority
of the larvae were set on day 18. The growth of the spat in the hatchery is described by the
exponential equation L - 0.0002739 D - where L is length in mm and D. days. On day 59, tbe
spat attained an average size of 2.42 x 1.70 mm. A total of 8090 spat were produced. During tha
nursery rearing in the field, the seed clam attained 20 mm average length in the following 5 months.
In India, A.grund~llsecd were grodwdfor the Arst time. The significance of this study forthe mass
production of the blood clam seed in the bat~herya nd its relevma to undertake blood clam culture
are highlighted.
 
Publisher MBAI
 
Date 1992
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/804/1/Muth_Nar_Gop_Sun_138-143.pdf
Muthiah, P and Narasimham, K A and Gopinathan, C P and Sundararajan, D (1992) Larval rearing, spat production and juvenile growth of the blood clam Anadara granosa. Journal of the Marine Biological Association of India, 34 (1&2). pp. 138-143.