:: Volume 17, Issue 2 (4-2018) ::
IJFS 2018, 17 Back to browse issues page
Growth, mortality and exploitation of buccaneer anchovy (Encrasicholina punctifer Fowler, 1938) from the north Persian Gulf and Oman Sea
A. Salarpouri , E. Kamrani * , F. Kaymaram , R. Mahdavi Najafabadi
, ehsan.kamrani@hormozgan.ac.ir
Abstract:   (842 Views)
The population parameters of Encrasicholina punctifer (buccaneer anchovy) from commercial fisheries in the Persian Gulf and Oman Sea coastal waters were studied from October 2014 to September 2015. A total of 13951 length-frequency data were collected monthly by pair-boat purse seine and beach seine methods. The asymptotic length (L) and Von Bertalanffy growth function (K) were 11.5 cm and K=1.4 per year, respectively. The value of to was calculated as -0.14 year. Longevity was estimated as 2 years. The total length ranged from 2.9 to 10.1 cm, with an average of 6.5 cm. The probability of capture was calculated in total length as L25=6.05 cm, L50=6.48 cm and L75=6.93 cm.  Four cohorts were distinguished annually with mean lengths of 4.56, 5.77, 7.21 and 8.50 cm. The length-weight relationship was determined as W= 0.0051 L 3.1114. Total, natural and fishing mortality parameters were estimated as 6.15, 2.84 and 3.32 yr-1 respectively. The current rate of exploitation (E) was 0.54, and the values of exploitation ratio was found reasonable for current fishing effort. From the yield-per-recruit analysis, Emax, was estimated as 0.91. The results indicated that the buccaneer anchovy stock was not overexploited. Since E<Emax, it confirmed the good potential of anchovy stock in the area.
 
Keywords: Encrasicholina punctifer, Growth, Mortality, Persian Gulf, Oman Sea
Full-Text [PDF 578 kb]   (311 Downloads)    
Type of Study: Orginal research papers |
Received: 2018/03/17 | Accepted: 2018/03/17 | Published: 2018/03/17


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