نتایج جستجو برای: alburnoides eichwaldii
تعداد نتایج: 175 فیلتر نتایج به سال:
The Caspian Sea basin is one of the most important ecosystems in Iran with a high diversity of different aquatic species, so that the issue of determining the taxonomy its fishes has always been considered. Up to now, a total of 297 species of freshwater and brackish fish have been reported from Iran where the subfamily Leuciscinae (minnows) has a high diversity of species in the Caspian Sea ba...
اطلاعات مختصری در مورد پوشش گیاهی کویر و لیست ایستگاههای که از آن مناطق نمونه برداری شده ارائه می گردد. سپس لیست اسامی گونه هایی که شناسایی شده شامل 104 گونه اضافه می شود. در این لیست دو گونه گیاهی به نامهای stipagrostis karelinii و zygophyllum eichwaldii برای اولین بار از ایران گزارش داده می شوند و دو گونه دیگر به نامهای salsola abarghuensis, s. yazdiana بعنوان گونه جدید برای دانش گیاه شناسی ...
The larval development of the nematode Contracaecum rudolphii (Rudolphi, 1819), a common parasite of the proventriculus of cormorants, was experimentally studied. Within the eggs cultivated in freshwater under laboratory temperatures of 20-22 degrees C, the developing larva undergoes two moults on days 4-5, attaining the third larval stage. Most of the ensheathed third-stage larvae, 291-457 mic...
Previous studies have shown that assortative mating acts as a driver of speciation by countering hybridization between two populations of the same species (pre-zygotic isolation) or through mate choice among the hybrids (hybrid speciation). In both speciation types, assortative mating promotes speciation over a transient hybridization stage. We studied mate choice in a hybrid vertebrate complex...
OBJECTIVE This study was conducted to determine the prevalence of Ligula intestinalis and infections caused by these on freshwater fish in rivers and streams in the Kars plateau of north-eastern Anatolia, Turkey. METHODS This research was conducted between April and July 2011. Fish samples were caught via a casting net and an electro-shocker. The samples were immediately examined to determine...
The chromosomal spread and karyotype of Spirlin (Alburnoides bipunctatus) from Zabol region were identified using tissue squashing techniques with injection of 0.5ml/100g body weight of 0.01% Colchicines solution in fish fingerlings. Kidney and gill tissues were extracted and chopped in KCl 0.075M for 30 min and fixed in Carnoy solution in 3 stages. The chromosomal spreads were stained in 20% G...
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