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Weight-length relationships of fishes discarded by trawlers in the North Aegean Sea

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Lamprakis M. K., Kallianiotis A. A., Moutopoulos D. K., Stergiou K. I.

Acta Ichthyologica et Piscatoria

2003

tom 33

nr 2

Background. Weight-length relationships of discarded species can de used for the estimation of discarded quantities per species, if the species length-frequency distribution is known. In this study, we present weight-length for 26 fish species discarded by commercial trawlers. Materials and Methods. We present weight -length relationships (W=a TL b ), for 26 discarded fish species, from samples caught with commercial trawlers (diamond cod- end mesh size: 14 mm; nominal bar length), from October 1996 to May 1998 in the North Aegean Sea. Results. The values of the exponent b of the weight-length relationships of the 26 fish species differed between years for six species and ranged from 1.507 to 3.596 (median and mean: 3.068 and 2.968 respectively). Conclusion. Weight -length relationships for 5 out of the 26 fish species are presented for the first time.

Ograniczanie wyników

1 Acta Ichthyologica et Piscatoria

1 Kallianiotis A. A.

1 Lamprakis M. K.

1 Moutopoulos D. K.

1 Stergiou K. I.

1 2003

Wyniki wyszukiwania

Weight-length relationships of fishes discarded by trawlers in the North Aegean Sea