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Hook selectivity of Giant Trevally (Caranx ignobilis) and Nakedbreast Trevally (Carangoides gymnostethus) (Carangidae) caught in the hook-and-line fishery off Negombo, Sri Lanka

Authors:

US Amarasinghe ,

University of Kelaniya, LK
About US
Department of Zoology
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IU Wickramaratne,

University of Kelaniya, LK
About IU
Department of Zoology
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MJS Wijeyaratne

University of Kelaniya, LK
About MJS
Department of Zoology
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Abstract

In the present study, an attempt was made to quantify hook selectivity of two carangid species (Caranx ignobilis and Carangoides gymnostethus) which were predominantly caught in the hook-and-line fishery off Negombo, Sri Lanka. As the length frequency data of C. ignobilis and C. gymnostethus recorded by hook size were skewed towards the larger fish, a modification of Baranov-Holt method for gillnet selection was employed. For both species there were positive significant relationships (p<0.001) between the hook size and optimal length while selection range was negatively related to hook size (p<0.001).

DOI: http://dx.doi.org/10.4038/sljas.v16i0.6712

Sri Lanka J. Aquat. Sci. 16 (2011): 11-26

How to Cite: Amarasinghe, U., Wickramaratne, I. & Wijeyaratne, M., (2014). Hook selectivity of Giant Trevally (Caranx ignobilis) and Nakedbreast Trevally (Carangoides gymnostethus) (Carangidae) caught in the hook-and-line fishery off Negombo, Sri Lanka. Sri Lanka Journal of Aquatic Sciences. 16, pp.11–26. DOI: http://doi.org/10.4038/sljas.v16i0.6712
Published on 20 Mar 2014.
Peer Reviewed

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