Volume No. 4 Issue No.: 4 Page No.: 917-922 April-June 2010

 

ESTIMATION OF MORTALITY COEFFICIENTS OF Otolithes ruber ( PERCIFORMES ) IN KHOOZESTAN PROVINCE OF SOUTH IRAN

 

Mojgan Khodadadi*, Farbod Emami1,Gholamhosein Mohammadi2 and Sepideh Riazi

1. Islamic Azad University, Ahvaz, (IRAN).
2. Fisheries research center , Ahvaz , (IRAN)
3. Islamic Azad University , Science and research branch , Ahvaz , (IRAN)

 

Received on : November 02, 2009

 

ABSTRACT

 

The Mortality Coefficients of Otolithes ruber locally known as Shoorideh were estimated in one year period. Monthly sampling was carried out from April 2005 to March 2006 of the main landings in the area. A total number of 16662 samples of O.ruber were caught. The von Bertalanffy growth parameters were computed and then total mortality (Z), natural mortality (M) and fishing mortality (F) were estimated. The results presented in this study reveal that the fishery is harvested at a higher level than the optimum fishing pressure.

 

Keywords : Otolithes ruber, Mortality coefficients, Persian gulf, Iran, Pauly’S empirical equation

 

 

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