نتایج جستجو برای: h molitrix
تعداد نتایج: 531519 فیلتر نتایج به سال:
Three species of invasive carp—Grass Carp Ctenopharyngodon idella, Silver Hypophthalmichthys molitrix, and Bighead H. nobilis—are rapidly spreading throughout North America. Monitoring their reproduction can help to determine establishment in new areas but is difficult due challenges associated with identifying fish eggs. Recently, random forest models provided accurate identification eggs base...
As bighead carp Hypophthalmichthysnobilis and silver carp H. molitrix (the bigheaded carps) are poised to enter the Laurentian Great Lakes and potentially damage the region's economically important fishery, information on developmental rates and behaviors of carps is critical to assessing their ability to establish sustainable populations within the Great Lakes basin. In laboratory experiments,...
در این پژوهش خصوصیات مورفولوژی و بافت شناسی بیضه 20 ماهی کپور نقره ای در دو رده یا گروه سنی زیر دو سال و چهار سال مطالعه گردید. در گروه1: 10 ماهی با میانگین وزنی 66/0± 25/1 کیلوگرم و میانگینsd) ±) طول کل بدن 41/1± 68/43 سانتیمتر و با حدود سنی 2 سال ، در گروه2: 10 ماهی کپور نقره ای نر با میانگین sd) ±) وزنی 52/0± 71/5 کیلوگرم و میانگین sd) ±) طول کل بدن 64/1 ± 5/81 سانتیمتر و با حدود سنی 4 سال ق...
The paper reviews all the reports concerning parasitic fauna of three species carps cultured in Al-Furat fish farm, Babylon province, mid Iraq. These fishes included common carp (Cyprinus carpio), grass (Ctenopharyngodon idella) and silver (Hypophthalmichthys molitrix) as well mullet (Liza abu) found same farm. 60 valid parasite species: ten protozoans, myxozoans, 29 monogeneans, one trematode,...
به منظور بررسی سمیت حاد فلز سنگین مس بر شاخص ها خونی ماهی فیتوفاگ، 135 قطعه ماهی در مجاورت غلظت های 0، 5 و 10 میلی گرم در لیتر نیترات مس (cu(no3)2) قرار گرفتند. نتایج نشان داد که تعداد گلبول های سفید خون (wbc) با افزایش غلظت نیترات مس و با گذشت زمان بطور معنی داری (05/0p<) کاهش یافته و در مجاورت با غلظت 5 میلی گرم در لیتر در زمان 24 ساعت به کمترین میزان (500 ± 7000 عدد در هر میلی متر مکعب خون) ...
The cDNAs encoding glutathione peroxidase (GPx) were cloned and sequenced from the liver of three Chinese carps with different tolerance to hepatotoxic microcystins, phytoplanktivorous silver carp (Hypophthalmichthys molitrix) and bighead carp (Aristichthys nobilis), and herbivorous grass carp (Ctenopharyngodon idellus). Using genome walker method, a 750 bp 5'-flanking region of the silver carp...
Ten years ago, very little was known about the genetics of most of the cyprinid species of interest to aquaculture in Asia, for example the Chinese carps, silver carp (Hypophthalmichthys molitrix), bighead carp (Aristichthys nobilis) and grass carp (Ctenopharyngodon idella); Indian major carps, catla (Catla catla), rohu (Labeo rohita) and mrigal (Cirrhinus cirrhosus); and the silver barb (Barbo...
Bioaccumulation and risk assessment of microcystins (MCs) in muscle of silver carp (Hypophthalmichthys molitrix) from eight eutrophic lakes along the Yangtze River of China were examined by using liquid chromatography electrospray ionisation mass spectrometry. MCs contents in seston collected from these eutrophic lakes ranged from 0.02 to 21.7 μg/L. MCs concentrations in silver carp muscle samp...
In order to control cyanobacteria blooms with silver carp in Lake Taihu, an in situ experiment was carried out by stocking silver carp at a biomass of 35, 70, and 150 g m-3 and no carp control in waterproof enclosures. Physicochemical water parameters and biomass of plankton were measured in enclosures to evaluate the suitable stocking density of silver carp for relieving internal nutrients and...
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