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Environmental Biology of Fishes

, Volume 93, Issue 2, pp 177–184 | Cite as

Reproductive biology of longnose trevally (Carangoides chrysophrys) in the Arabian Sea, Oman

  • Issam Al-Rasady
  • Anesh Govender
  • Saud M. Al-Jufaili
Article

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.

Keywords

Gonadosomatic index Length-at 50% maturity Length-weight relationship Condition factor 

Notes

Acknowledgements

The authors would like to acknowledge the assistance from the staff of the Ministry of Fisheries Wealth in collecting the samples and data management. We thank Yong Chen (University of Maine), Ewen Mclean (University of Trinidad and Tobago) and two anonymous referees for their helpful comments on an earlier draft of this manuscript. This project was financially supported by the Agriculture and Fisheries Research Fund of the Sultanate of Oman.

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Issam Al-Rasady
    • 1
  • Anesh Govender
    • 2
  • Saud M. Al-Jufaili
    • 2
  1. 1.Marine Sciences and Fisheries CenterMinistry of Fisheries WealthMuscatSultanate of Oman
  2. 2.Department of Marine Science and Fisheries, College of Agriculture and Marine SciencesSultan Qaboos UniversityAl-KhodSultanate of Oman

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