Population dynamic and length–weight relationships (LWRS) in Fenneropenaeus merguiensis (de Man, 1888) collected from Balochistan coast, Pakistan

Total of (632) Fenneropenaeus merguiensis specimens were collected from Damb Fish Landing Centre at Sonmiani, Balochistan during 15th August 2008 to 15th April 2010. The mortality rates M, F and Z computed are 2.46, 3.27 and 5.73 respectively and during the year 2009-2010, the mortality rates M = 2.36, F = 3.17 and Z = 5.63 were measured respectively. Exploitation Rate (E) were determine in between 0.57- 0.58 during 2008-2010. The calculated value of log a -3.0551 and regression coefficient, b 3.3931 were measured in 2008-2009 and the value of log a -3.2751 and regression coefficient b 3.5689 were recorded in 2009- 2010 respectively. The mean condition factor was recorded as 1.0179 and 1.0062 in 2008-2010