Reproductive biology of longnose trevally (Carangoides chrysophrys) in the Arabian Sea, Oman |
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Authors: | Issam Al-Rasady Anesh Govender Saud M Al-Jufaili |
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Institution: | (1) Marine Sciences and Fisheries Center, Ministry of Fisheries Wealth, PO Box 467, Muscat, 100, Sultanate of Oman;(2) Department of Marine Science and Fisheries, College of Agriculture and Marine Sciences, Sultan Qaboos University, PO Box 34, Al-Khod, 123, Sultanate of Oman |
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Abstract: | The reproductive pattern of longnose trevally (Carangoides chrysophrys) in the Arabian Sea, off the coast of Oman, is described. Samples were collected on a monthly base between April 2005 and
September 2006 from two landing sites (ALlakbi and Raysuot). A single peak of the gonadosomatic index (GSI) started from September
and ended in February signalling the spawning period. Values of the relative condition factor (K
n
) were fairly constant throughout the year for both males and females and no significantly difference was found in the average
K
n
values between males and females during sampling period. Male and female lengths-at 50% maturity were 46.90 and 42.08 cm,
respectively and were significantly different. This study thus increases our understanding of the reproductive biology of
an important commercial and artisanal fish species in one of its major distribution areas. |
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Keywords: | |
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