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Colour and thickness of nacre in four generations of Indian pearl oyster, Pinctada fucata (Gould) produced in the hatchery

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Relation http://eprints.cmfri.org.in/3249/
 
Title Colour and thickness of nacre in four generations of Indian pearl oyster, Pinctada fucata (Gould)
produced in the hatchery
 
Creator Velayudhan, T S
Dharmaraj, S
Victor, A C C
Chellam, A
 
Subject Pearl oyster
 
Description In the case of the Japanese pearl oyster, Pinctada
fucata martensii, the frequency of shells with white
nacre has increased to 80% in the third generation
from 20% in the base population by selective
breeding. In this study an increase in the percentage
of thickness in pinkish-yellow (19.55), yellow
(9.33) and white nacre (1.84) respectively was
observed in the fourth, third and second generations
respectively when compared with the first
generations respectively when compared with the
first generation. According to Wada (1986) the yellow
coloured pearls produced from the oysters of second
generation were heavier than the white ones.
In the present study, the maximum thickness of
nacre of yellow and pinkish-yellow colours was
observed in the oysters produced in almost all generations.
Based on this study it is suggested that
the quality of pearls and nacre thickness of shells
could be improved through selective breeding.
 
Publisher CMFRI
 
Date 1995-04
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/3249/1/Article_04.pdf
Velayudhan, T S and Dharmaraj, S and Victor, A C C and Chellam, A (1995) Colour and thickness of nacre in four generations of Indian pearl oyster, Pinctada fucata (Gould) produced in the hatchery. Marine Fisheries Information Service, Technical and Extension Series, 137. pp. 3-6.