Length-weight relationship and growth parameters of kingfish (Scomberomorus commerson) in the North of the Persian Gulf

Abstract

The kingfish, Scomberomorus commerson is an epipelagic and migratory species found across the coastal waters of tropical region. It is a commercially important species in the North of Persian Gulf. The population parameters of species are important in fishery management. So, this study investigated some population characteristics of S. commerson, in the northern coasts of the Persian Gulf (Bushehr waters). Fish were selected at random from three namely landing stations during April 2010 to March 2011. The Length-Weight Relationship (LWR) was estimated by using the equation W = aL b and the FiSAT software was used to analyse the growth parameters. Length-weight relationship indicated isometric growth with b = 2.93. The growth parameters of the Von Bertalanffy equation were estimated as: L ∞ =143.85 cm, K = 0.31, t 0 = -0.63 years with a growth performance index (ø’) of 3.81. These findings can be used as biological input parameters in further stock evaluations in this region.