Growth, Mortality and Spatial Distribution of Brushtooth Lizardfish, Saurida undosquamis (Richardson, 1848), Inhabiting the Karatas Coasts (Iskenderun Bay, Northeastern Mediterranean)


ACTA ZOOLOGICA BULGARICA, cilt.63, ss.97-103, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 63 Konu: 1
  • Basım Tarihi: 2011
  • Sayfa Sayıları: ss.97-103


This study was carried out from September 2002 to April 2003 in Karatas Coasts (Iskenderun Bay). A total of 279 specimens were trawled by monthly sampling in 2002-2003 fishing season. The age of Saurida undosquamis was estimated by examining sagittal otoliths and it was found out that the age composition varied from I to VI age classes. The mean total length and total weight values were calculated as 4.22 +/- 3.42 cm and 20.73 +/- 15.42 g respectively and the calculated length-weight relationship was W=0.0083*L(2.879). The von Bertalanffy growth parameters were L(infinity): 38.05 cm, K: 0.124 year(-1) and t(o): -1.680 year. The instantaneous rate of total mortality (Z) was 1.77, the natural mortality (M) was 0.35 and the fishing mortality (F) was estimated to be 1.42. The exploitation rate (E) was calculated as 0.80 using value of M and F. Therefore, the population of S. undosquamis from the coast of Karatas, Iskenderun Bay was exploited over the optimum level because of overfishing pressure.