[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
:: Volume 12, Issue 4 (10-2013) ::
IJFS 2013, 12 Back to browse issues page
Population dynamic parameters of Thunnus tonggol (Bleeker, 1851) in the Persian Gulf and Oman Sea
F Kaymaram * , M Darvishi , S Behzadi , S Ghasemi
, farhadkaymaram@gmail.com
Abstract:   (4434 Views)
Length frequency data of the longtail tuna, Thunnus tonggol collected from October 2006 to September 2007 were analyzed for evaluation of the stock parameters. T. tonggol is mainly caught by gillnet method. Yearly tuna and tuna-like catches in Iran are of the order of 174,234 mt, close to 46% of which are longtail tuna. The VBG parameters for longtail tuna were: L∞ =133.72cm K=0.35 year−1.The length –weight relationship was estimated as: W=0.00002 L 2.83.The instantaneous rates of total mortality (Z) was estimated by using the Powell-Wetherall plot as 1.82 year−1. The instantaneous rate of natural mortality was obtained by Pauly equation (M=0.44 year−1) and the instantaneous rate of fishing mortality (F) estimated from Z-M=1.38year−1.
Keywords: Growth and mortality parameters, Thunnus tonggol, Persian Gulf, Oman Sea
Full-Text [PDF 343 kb]   (1667 Downloads)    
Type of Study: Orginal research papers | Subject: Stock assessment
Received: 2014/02/3 | Accepted: 2014/02/3 | Published: 2014/02/3
Send email to the article author

Add your comments about this article
Your username or Email:

Write the security code in the box >


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Kaymaram F, Darvishi M, Behzadi S, Ghasemi S. Population dynamic parameters of Thunnus tonggol (Bleeker, 1851) in the Persian Gulf and Oman Sea. IJFS. 2013; 12 (4) :855-863
URL: http://jifro.ir/article-1-1358-en.html


Volume 12, Issue 4 (10-2013) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3708