نتایج جستجو برای: vimba vimba persa
تعداد نتایج: 173 فیلتر نتایج به سال:
The rearing of fish fry in illuminated cages is one of the methods used before fish release into water bodies. The aim of the study was to investigate the peculiarities of infestation with Argulus foliaceus L. of the fry of pike Esox lucius (L.), pike-perch Sander lucioperca (L.), bream Abramis brama (L.), vimba Vimba vimba (L.) and peled Coregonus peled (Gmel.) reared in illuminated cages. The...
Heavy metals are one of the main groups of environmental pollutants; enter the aquatic environment through natural and human activities. These metals may accumulate in aquatic organisms including fish and be a potential danger to the health of the ecosystem and living organisms, especially for human beings. In this study, the amount of heavy metals including copper, zinc, and nickel was investi...
Some reproduction characteristics of the Caspian Vimba, Vimba vimba persa, were studied from Oct. 2008 to Sep. 2009 in coastal waters of the Caspian Sea (Mazandaran province). 994 specimens were monthly collected from 6 fish landing sites of Ramsar, Tonekabon, Chalus, Mahmood Abad, Sari and Behshahr. The fecundity was measured using 92 specimens. This species was found to have more abundance in...
جمعیت ماهی سیاه کولی دریای خزر (vimba vimba persa) در دو منطقه از سواحل جنوبی دریای خزر (تالاب انزلی و رودخانه حویق واقع در استان گیلان) با استفاده از ده نشانگر ریزماهواره پلی مورف مورد مطالعه قرار گرفت. در مجموع 153 الل مورد شناسایی گردید. بیشترین تعداد الل های مشاهده شده 17 الل در جایگاه ca3 و کمترین آن 3 الل در جایگاه z8145 بوده که میانگین اللی در هر جایگاه 6/7 بدست آمد. میانگین هتروزایگوسیت...
at first, in order to define acute toxicity of diazinon insecticide and butachlor herbicide, acute toxicity tests (lc5096h) were done, based on standard method (1989) o.e.c.d. in static way and for 96 hours. and the amount of acute toxicity (lc5096h) of diazinon and butachlor in 1 to 2 gram vimba vimba persa fry larva was determined to be 0.09 and 0.61 respectively. in order to do histology stu...
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