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Abstract
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Article Information:
Reproductive Indices of Saline-tolerant Tilapia Strains, Oreochromis Spp. and Their Crosses
Cecilia J. Jaspe and Christopher Marlowe A. Caipang
Corresponding Author: Christopher Marlowe Caipang
Submitted: 2011 May, 27
Accepted: 2011 July, 02
Published: 2011 July, 15 |
Abstract:
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The aim of the study was to determine the total fecundity, relative fecundity and Gonadosomatic
Index (GSI) in the F1 female of the different saline-tolerant strains of tilapia, namely, Oreochromis
mossambicus, a tilapia hybrid (O. spilorus x O. niloticus GIFT x O. aureus) and their crosses. There were no
significant differences in the length and weight of the female spawners among the tilapia strains. Higher total
fecundity was observed in bigger-sized fish, whereas the relative fecundity is significantly higher in the smallersized
fish. Total fecundity and GSI significantly varied among the tilapia strains, while there was no significant
difference in relative fecundity. Both total length and body weight were positively correlated with total
fecundity in the tilapia hybrid strain and their crosses. However, the degree of correlation was not significantly
different. Relative fecundity was negatively correlated with total length and body weight, and the degree of
correlation was significantly different in the O. mossambicus strain.
Key words: Fecundity, Oreochromis spp., reproductive performance, saline-tolerant strains, , ,
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Cite this Reference:
Cecilia J. Jaspe and Christopher Marlowe A. Caipang, . Reproductive Indices of Saline-tolerant Tilapia Strains, Oreochromis Spp. and Their Crosses. Current Research Journal of Biological Sciences, (4): 404-409.
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ISSN (Online): 2041-0778
ISSN (Print): 2041-076X |
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