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Turkish Journal of Fisheries and Aquatic Sciences 2019, Vol 19, Num, 1     (Pages: 71-79)

Length-Weigth Relationships for Nine Chondrichthyes Fish Species from Edremit Bay (North Aegean Sea)

Dilek Türker 1 ,Kadriye Zengin 1 ,Özgür Kemal Tünay 1

1 Department of Biology, Faculty of Science and Arts, Balikesir University, Balikesir, Turkey DOI : 10.4194/1303-2712-v19_1_09 Viewed : 5049 - Downloaded : 3928

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 TL 2.1701(r2=0.8645) for Dasyatis pastinaca, W=0.1139 TL 2.7088(r2=0.9768) for Mustelus mustelus, W=0.0014 TL 3.1795 (r2=0.8742) for Myliobatis aquila, W=0.0322 TL 2.5597(r2=0.8836) for Raja clavata, W=0.0215 TL 2.5654(r2=0.7152) for Raja miraletus, W=0.0029 TL 3.2142 (r2=0.9262) for Raja radula, W=0.000006 TL 2.8817 (r2=0.8138) for Scyliorhinus canicula, W=0.0004 TL 3.6397 (r2=0.6365) for Scyliorhinus stellaris, W=0.1297 TL 2.4665 (r2=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).

Keywords : Chondrichthyes, Length-Weight Relationship, Edremit Bay