Growth, mortality and exploitation of buccaneer anchovy (Encrasicholina punctifer Fowler, 1938) from the north Persian Gulf and Oman Sea
Description:-Department of Fisheries, Faculty of Marine Science and Technology, Hormozgan University, Bandar Abbas, Iran. P.O. Box: 3955
2-Fisheries Science Research Institute, Tehran, Agricultural Research, Education and Extension Organization, Iran. P.O.Box: 149-14965
3-Department of Natural Resources Engineering, Hormozgan University, Bandar Abbas, Iran. P.O.Box: 3955
Corresponding author’s E-mail: ehsan.kamrani@hormozgan.ac.ir
Text:Abstract
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
Keywords:Encrasicholina punctifer, Growth, Mortality, Persian Gulf, Oman Sea
Author:Salarpouri A.1; Kamrani E.1*; Kaymaram F.2; Mahdavi Najafabadi R.3
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