ovarian histological and sexual maturation study in bream abramis brama orientalis ( berg, 1905 ) through induce lhrha2 and dopamine antagonists
نویسندگان
چکیده
in the present study histological studies was conducted after the female abramis brama orientalis was exposed to eight treatment phases in which lhrha2 (3 μg/kg), metoclopramide (5 mg/kg), and chlorpromazine (10 mg/kg) were inoculated. the treatments were characterized by combined and solitary injections, control group (o injection), and experimental group (saline). the results showed that all three investigated compositions enjoy arousal effects which bring about sexual maturity. in both solitary and combined treatments lhrha2 entailed oocyte maturity and qualitative developments among the oocytes occurred during the spawning period and fat vacuole as a macro vacuole and resolution of the vitelline took place due to improvements in the proteolitic activity during the final maturity phase. metoclopramide fostered sexual maturity among the oocytes which have been ready to enter the last and final sexual maturity stage; however, chlorpromazine did not have any significant impacts and thereby they are not identified as a powerful and special dopamine types. oocyte diameter in treatments metoclopramide :810μm, lhrha2: 773μm,chlorpromazine:680μm,metoclpramide+lhrha2:545μm,chlorpromazine+lhrha2:515μm,metoclopramide+chlorpromazine+lhrha2: 383 μm and control: 379.
منابع مشابه
the study of lhrha2 and dopamine antagonists on gonadotropin ii level in abramis brama orientalis (berg, 1905)
synthetic lhrha or its superactive analogues stimulate gth release. it shows an overlap in the biological activity of lhrha and gnrh in many teleost species. the aim of the present study was to investigate the effects of lhrha2, metoclopramide and chlorpromazine on hpg axis and plasma levels of ght ii. luteinizing hormone releasing hormone analogue 2 (lhrha2) (3 mg/kg) with dopamine antagonis’s...
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Bream (Abramis brama orientalis) is one of the most commercially valuable fish in the Caspian Sea. The aim of this study was to compare levels of genetic polymorphism between wild and farmed Bream populations using seven microsatellite loci. Genetic diversity was investigated by studying samples collected from two regions; Chaboksar and the Artificial Propagation Center of Guilan province. Alle...
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Bream (Abramis brama orientalis) is one of the most commercially valuable fish in the Caspian Sea. The aim of this study was to compare levels of genetic polymorphism between wild and farmed Bream populations using seven microsatellite loci. Genetic diversity was investigated by studying samples collected from two regions; Chaboksar and the Artificial Propagation Center of Guilan province. Alle...
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This study was conducted to examine morphometric and meristic characteristics alongside pigmentation patterns of bream larvae, Abramis brama orientalis, in four stages of larval development. Morphological characters including total length (TL), standard length (SL), notochord length (NL), head length (HL), head depth (HD), eye diameter (ED) and mouth width (MW) were examined from hatching time ...
متن کاملmorphometric and meristic variations in bream (abramis brama orientalis, berg, 1949) during larval development
this study was conducted to examine morphometric and meristic characteristics alongside pigmentation patterns of bream larvae, abramis brama orientalis, in four stages of larval development. morphological characters including total length (tl), standard length (sl), notochord length (nl), head length (hl), head depth (hd), eye diameter (ed) and mouth width (mw) were examined from hatching time ...
متن کاملcomparison of genetic variation of wild and farmed bream (abramis brama orientalis; berg, 1905) using microsatellite markers
bream (abramis brama orientalis) is one of the most commercially valuable fish in the caspian sea. the aim of this study was to compare levels of genetic polymorphism between wild and farmed bream populations using seven microsatellite loci. genetic diversity was investigated by studying samples collected from two regions; chaboksar and the artificial propagation center of guilan province. alle...
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عنوان ژورنال:
دامپزشکیجلد ۲۲، شماره ۳، صفحات ۳۱-۳۹
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