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

• Autorzy: Lamprakis M K , Kallianiotis A.A. , Moutopoulos D.K. , Stergiou K.I.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

weight-length relationship; Thracian Sea; fish; discard; commercial trawler; Aegean Sea

• Wydawca: -
• Czasopismo: Acta Ichthyologica et Piscatoria
• Rocznik: 2003
• Tom: 33
• Numer: 2
• Opis fizyczny: p.145-151,ref.

Twórcy

autor

Lamprakis M K

• Technological Educational Institution of Epeirus, Igoumenitsa, Greece

autor

Kallianiotis A.A.

autor

Moutopoulos D.K.

autor

Stergiou K.I.

Bibliografia

• Froese R., Pauly D., (eds.) 2000. FishBase 2000: Concepts, design and data sources.ICLARM, Los Banos, Laguna, Philippines.
• Froese R., Pauly D., (eds.) 2003. FishBase. World wide web electronic publication.www.fishbase.org, version 16 June 2003.
• Goncalves J.M.S., Bentes L., Lino P.G., Ribeiro J., Canario A.V.M., Erzini K.,1996. Weight–length relationships for selected fish species of the small-scale demersal fisheries of the southwest coast of Portugal. Fisheries Research, 30: 253–256.
• Hall S.J., 1999. The effects of fishing on marine ecosystem and communities.Blackwell Science, Oxford.
• Machias A., Vassilopoulou V., Vatsos D., Bekas P., Kallianiotis A.,Papaconstantinou C., Tsimenides N., 2001. Bottom trawl discards in the northeastern Mediterranean Sea. Fisheries Research 53: 181–195.
• Martin-Smith K.M., 1996. Length/weight relationships of fishes in a diverse tropical freshwater community, Sabah, Malaysia. Journal of Fish Biology 49: 731–734.
• Morey G., Moranta J., Massuti E., Grau A., Linde M., Riera F., Morales-Nin B.,2003. Weight–length relationships of littoral to lower slope fishes from the western Mediterranean. Fisheries Research 62: 89–96.
• Moutopoulos D.K., Stergiou K.I., 2002. Weight–length and length-length relationships for 40 fish species of the Aegean Sea (Hellas). Journal of Applied Ichthyology 18: 200–203.
• Stergiou K.I., Moutopoulos D.K., 2001. A review of length–weight relationships of fishes from Greek marine waters. Naga (the ICLARM Quarterly) 24 (1–2): 23–39.
• Stergiou K.I., Christou E.D., Georgopoulos D., Zenetos A., Souvermezoglou C.,1997. Hellenic waters: Physics, Chemistry, Biology and Fisheries. Oceanography Marine Biology: An Annual Review 35: 415–538.
• Weatherley A.H., Gill H.S., 1987. The biology of fish growth. Academic Press, London.Wotton R.J., 1990. Ecology of teleost fish. Chapman and Hall, London.
• Zar J.H., 1999. Biostatistical Analysis. 4th edition. Prentice-Hall, Englewood Cliffs, NJ.