Length-weigth relationships for nine chondrichthyes fish species from Edremit bay (North Aegean Sea)

Abstract

Length-weight relationships were calculated for 9 chondrichthyes fish species totalizing 284 inviduals from Edremit Bay (North Aegean Sea) caught with bottom trawls between June 2007 and June 2009. It was calculated as W=0.1306 TL2.1701 (r(2)=0.8645) for Dasyatis pastinaca, W=0.1139 TL2.7088 (r(2)=0.9768) for Mustelus mustelus, W=0.0014 TL3.1795 (r(2) = 0.8742) for Myliobatis aquila, W=0.0322 TL2.5597 (r(2)=0.8836) for Raja clavata, W=0.0215 TL2.5654 (r(2)=0.7152) for Raja miraletus, W=0.0029 TL32142 (r(2)=0.9262) for Raja radula, W=0.000006 TL2.8817 (r(2)=0.8138) for Scyliorhinus canicula, W=0.0004 TL3.6397 (r(2)=0.6365) for Scyliorhinus stellaris, W=0.1297 TL2.4665 (r(2)=0.8022) for Torpedo marmorata. In addition, 157 previous studies were carried out on the characterization of L-W relationships for 12 chondricthtyes fish species in Turkey waters. The values of the b values identified by other authors varied from 2.122 to 4.15. The mean value of b was 3.165 (SE = +/- 0.025).