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The reproductive biology and feeding habits of yellow fin seabream, Acanthopagrus latus (Houttuyn, 1782), in the Northern Persian Gulf | ||
| Iranian Journal of Fisheries Sciences | ||
| مقاله 2، دوره 15، شماره 1، فروردین 2016، صفحه 16-30 اصل مقاله (675.3 K) | ||
| شناسه دیجیتال (DOI): 10.22092/ijfs.2018.114509 | ||
| نویسندگان | ||
| A Vahabnezhad؛ F Kaymaram؛ S.A Taghavi Motlagh؛ T Valinasab؛ S.M.R Fatemi* | ||
| چکیده | ||
| Monthly samples of Acanthopagrus 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 female A. 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 that A. 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. | ||
| کلیدواژه‌ها | ||
| Acanthopagrus latus؛ Diet؛ SPAWNING؛ Protandrous؛ Persian Gulf | ||
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آمار تعداد مشاهده مقاله: 139 تعداد دریافت فایل اصل مقاله: 149 |
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