نتایج جستجو برای: capoeta capoeta gracilis
تعداد نتایج: 3625 فیلتر نتایج به سال:
Capoeta damascina was earlier considered by many authors as one of the most common freshwater fish species found throughout the Levant, Mesopotamia, Turkey, and Iran. However, owing to a high variation in morphological characters among and within its various populations, 17 nominal species were described, several of which were regarded as valid by subsequent revising authors. Capoeta damascina ...
A new species of algae-scraping cyprinid of the genus Capoeta Valenciennes, 1842 is described from the Kheyroud River, located in the southern part of the Caspian Sea basin in Iran. The species differs from other members of this genus by a combination of the following characters: one pair of barbels; predorsal length equal to postdorsal length; maxillary barbel slightly smaller than eye's horiz...
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...
Neoechinorhynchus (Neoechinorhynchus) zabensis sp. n. (Acanthocephala: Neoechinorhynchidae) is described from Capoeta damascina (Valenciennes, 1842) (type host) and Capoeta trutta (Heckel, 1843) in the Greater and Lesser Zab Rivers, northern Iraq. The new species is unique among all other species of the genus by its characteristic paired para-vaginal muscular appendage and fragmented giant nucl...
This study investigated the effect of parasite infection with Posthodiplostomum cuticola on fish growth rate in Zaringol Stream in Golestan Province. A total number of 447 fish specimens (173 Capoeta capoeta gracilis, 111 Alburnoides eichwaldii, 131 Paracobitis malapterura, 32 Neogobius fluviatilis) were captured by electrofishing during December 2009 to September 2010. Total number of para...
این تحقیق از12 مرداد ماه سال 1389 تا 30 تیر 1390 در رودخانه بابلرود استان مازندران بر روی گونه سیاه ماهی جنس gracilis Capoeta capoetaانجام گرفته است.نمونه برداری ها به صورت ماهانه با استفاده از الکتروشوکر صورت گرفت و در مجموع 307 عدد سیاه ماهی صید گردید.متغیرهای طول کل، طول چنگالی، طول استاندارد، وزن بدن، سن، جنسیت، وزن گناد و قطر تخمک اندازه گیری و ثبت شدند. برا...
به منظور بهره برداری پایدار و حفظ تنوع زیستی اکوسیتم های رودخانه ای، شناخت نیازهای زیستی آبزیان امری ضروری است و ترجیح زیستگاه یکی از مهمترین عوامل مدیریتی برای جمعیت ماهیان می باشد. رودخانۀ سیاهرود از جمله رودهای فرعی منتهی به رودخانه سفیدرود در حوضۀ خزر است که از رشته کوه های البرز سرچشمه می گیرد و از جمله مکان های پراکنش سیاه ماهی (capoeta capoeta gracilis)، یکی از ماهیان بومی و گونۀ غالب ای...
Increased use of fertilizers to increase plant production causes important environmental pollution not only in soil but also water resources. Soil structure, quality, systems, and biodiversity are adversely affected by the unconscious fertilizers. In this study, Capoeta capoeta (Guldenstaedt 1773) were used investigate degenerative effects nitrogen fertilizer. Twentyfour fish equally allocated ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید