Length-weight relationships for 47 fish species from Izmir Bay (eastern Aegean Sea, Turkey)

Abstract

      Length-weight relationships were calculated for 47 fish species from the Izmir Bay in the Aegean Sea, Turkey. A total of 13243 fish specimens were sampled with several fishing gears in 1998-2001. The sample size ranged from 11 individuals for Nerophis ophidion to 1197 for Boops boops. The r² values ranged from 0.82 for Nerophis ophidion to 0.99 for Scorpaena scrofa, and all regressions were highly significant (p<0.001). Values of the exponent b in the length-weight regression (W = aL^b) ranged 1.970-3.727. The median was 3.042 and over 50% of the values were within 2.937- 3.186. Information from the present survey may be used for fisheries management or other practical purposes.