Vol.15, No. 1,January2016
The reproductive biology and feeding habits of yellow fin seabream, Acanthopagrus latus (Houttuyn, 1782), in the Northern Persian Gulf
Description:- Department of Marine Biology, Science and Research Branch, Islamic Azad University,Tehran, Iran 2- Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Tehran, Iran. *Corresponding author's email: reza_fatemi@hotmail.com
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Abstract
Monthly samples ofAcanthopagrus latus(Hottuyn, 1782) were used to determine (1) feeding habits and (2) reproduction characteristics of the species in relation to its size, spawning season and sex in the Northern part of the Persian Gulf from January to December 2013. The smaller length classes of all samples were dominated by male fish. All gonads examined, were ovotestis during the spawning period from February till May. Male and female ovotestes were dimorphic in structure which represented a transitional stage in a protandrous sex change. Length at first sexual maturity of femaleA. latus was 24.40 cm.A. latus fed predominantly on bivalves, gastropods, cephalopods,stomatopods, fish and decapods which showed changes according to the season and body size. According to our results, it appears thatA. latus feeds throughout the year; the highest value of gastrosomatic index (GaSI) for both sexes was recorded in February, which was significantly different from that in other months. The results of this study also indicate that feeding in yellowfin seabream is very intense before reproduction (during January and February). It decreases gradually after February to June during the spawning season.
Keywords:Acanthopagruslatus, Diet, Spawning, Protandrous, Persian Gulf.
Author:Vahabnezhad A.1; Kaymaram F.2; Taghavi Motlagh S.A.2;Valinassab T.2; Fatemi S.M.R.1*
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