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Age and growth of flathead, Platycephalus indicus from the Persian Gulf (Bandar Abbas, Iran)

Published online by Cambridge University Press:  24 April 2014

Dariush Mohammadikia ,
Ehsan Kamrani ,
Mohammad Reza Taherizadeh ,
Ayoub Soleymani ,
Ehsan Farokhi  and
Mohammad Momeni
Dariush Mohammadikia*
Affiliation:
Department of Marine Biology, Faculty of Basic Sciences, University of Hormozgan, PO Box: 3995 Bandar Abbas, Iran
Ehsan Kamrani
Affiliation:
Department of Marine Biology, Faculty of Basic Sciences, University of Hormozgan, PO Box: 3995 Bandar Abbas, Iran
Mohammad Reza Taherizadeh
Affiliation:
Department of Marine Biology, Faculty of Basic Sciences, University of Hormozgan, PO Box: 3995 Bandar Abbas, Iran
Ayoub Soleymani
Affiliation:
Department of Marine Biology, Faculty of Basic Sciences, University of Hormozgan, PO Box: 3995 Bandar Abbas, Iran
Ehsan Farokhi
Affiliation:
Department of Marine Biology, Faculty of Basic Sciences, University of Hormozgan, PO Box: 3995 Bandar Abbas, Iran
Mohammad Momeni
Affiliation:
Department of Marine Biology, Faculty of Basic Sciences, University of Hormozgan, PO Box: 3995 Bandar Abbas, Iran Persian Gulf and Oman Sea Ecological Research Institute, Bandar Abbas, Iran
*
Correspondence should be addressed to: D. Mohammadikia, Department of Marine Biology, Faculty of Basic Sciences, University of Hormozgan, PO Box: 3995 Bandar Abbas, Iran email: [email protected]
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Abstract

In a study of the age and growth of Platycephalus indicus, a total of 1106 fish were collected from May 2011 to March 2012 in the coastal waters of Iran, Persian Gulf. The ages of 279 specimens were determined by sectioned otoliths. The ages of the females were estimated to be between 0+ to 7+ , while the ages of the males were from 0+ to 4+. The von Bertalanffy growth curve was well suited to the age/total length data of males and females as follows: Lt = 43.40{1–exp[−0.45(t + 0.328)]} for males, and Lt = 63 {1–exp[−0.50(t + 0.30)]} for females. linf = 43.40, k = 0.45, t0 = −0.328 for females and linf = 63, k = 0.50, t0 = −0.30 for males. The estimated values of natural mortality (M) were M = 0.886 yr−1 for females and 0.736 yr−1 for males, and the estimated Z values were 1.43 yr−1 for females and 1.62 yr−1 for males. The mean value of the gonadosomatic index for males and females was 0.82 ± 0.25 and 2.48 ± 0.59, respectively, in each year. The mean values of the hepatosomatic index (HSI) were 0.89 ± 0.20 for males and 1.28 ± 0.16 for females. The highest HSI values for this location were observed in January, and the lowest were in April.

Keywords

Platycephalus indicusPersian Gulfgrowthmortalitygonadosomatic indexhepatosomatic index
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 94 , Issue 5 , August 2014 , pp. 1063 - 1071
Copyright
Copyright © Marine Biological Association of the United Kingdom 2014 

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