
	Journal of Fisheries and Aquatic Science
	Year: 2011 \| Volume: 6 \| Issue: 2 \| Page No.: 151-160 DOI: 10.3923/jfas.2011.151.160

Population Dynamics and Stock Assessment of Hilsa Shad, Tenualosa ilisha in Iran (Khuzestan Province)

L. Roomian and S. Jamili

Abstract: Monthly data of length composition for Tenualosa ilisha landed between April 2006 to March 2007 in north of Persian Gulf were used to estimate the growth, mortality and exploitation parameters of the stock. Maximum total length and weight were 43 cm and 949 g, respectively. Nonlinear least square fitting provided a complete set of von Bertalanffy growth estimate: L_{8 =}42.74 cm total length, K= 0.77 and t₀ = -0.21 years^-1. The estimated value of total mortality based on length converted catch curve using these growth parameters is Z= 2.55 years^-1. Natural mortality based on growth parameters and mean environmental temperature (T = 23 C) is 0.75 years^-1. Fishing mortality computed for T. ilisha was 1.8 years^-1. The exploitation rate (E) was 1.8 years^-1. The higher value of E indicates over fishing during in period. Population dynamics and stock assessment of Tenualosa ilisha in Iran waters was studied using the length-frequency based analysis of FiSAT software to evaluate the growth parameters, mortality rates, exploitation rate and Maximum Sustainable Yield (MSY). The study showed that T. ilisha is in over fishing pressure.

PDF Fulltext XML References Citation Report Citation

RELATED ARTICLES:

•	Reproductive Biology of Hilsa Shad Tenualosa ilisha (Teleostei: Clupeidae) During Spawning Migration in the Shatt Al Arab River and Southern Al Hammar Marsh, Basra, Iraq

•	Techniques to Assess Fish Productivity in Aquaculture Farms and Small Fisheries: An Overview of Algebraic Methods

•	Growth Characteristics of Slender Silver-biddies Gerres oblongus (Pisces: Perciformes) from the Jaffna Lagoon, Sri Lanka

•	Age, Growth and Mortality of Hilsa Shad, Tenualosa ilisha in the River Meghna, Bangladesh

•	Population Dynamics of Tenualosa ilisha of Bangladesh Water

How to cite this article:

L. Roomian and S. Jamili, 2011. Population Dynamics and Stock Assessment of Hilsa Shad, Tenualosa ilisha in Iran (Khuzestan Province). Journal of Fisheries and Aquatic Science, 6: 151-160.

DOI: 10.3923/jfas.2011.151.160

URL: https://scialert.net/abstract/?doi=jfas.2011.151.160

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		ASCI-Database
		Asian Digital Library
		Cambridge Scientific Abstract
		Chemical Abstract Services
		Google Scholar
		ProQuest

Science Alert