نتایج جستجو برای: capoeta damascina
تعداد نتایج: 402 فیلتر نتایج به سال:
زیستگاه به عنوان یکی از مهمترین عوامل در حفاظت از گونهها مطرح میباشد. زیرا با تعیین خصوصیات زیستگاهی موردپسند بهوسیلهی گونههای در معرض خطر، میتوان طرحهای حفاظتی ارائه کرد. براین اساس، مطالعهی حاضر بهمنظور بررسی نیازهای زیستگاهی سیاهماهی توئینی در رودخانه کردان انجام شده است. نمونهبرداری از سه ایستگاه اصلی در دو فصل تابستان و زمستان صورت گرفت. در طول رودخانه سه ایستگاه نمونهبرداری...
دیازینون یکی از پرکاربردترین آفت کش های گروه ارگانوفسفره است که پس از استفاده به منظور ازبین بردن آفات مختلف ممکن است به محیط های آبی راه یابد و تأثیراتی را در آبزیان و در نهایت انسان بگذارد. به همین علت، مطالعة حاضر به منظور بررسی تأثیرات غلظت های 5/0، 1 و 5/1 پی پی ام (که قبلاً در برخی مناطق تخمین زده شده بودند) از آفت کش دیازینون در پارامترهای هماتولوژیک (هموگلوبین، هماتوکریت، گلبول های قرمز،...
as a part of a major ecological study of hanna wetland, semirum region, isfahan province, parasitic infestation of 3 native and one introduced fish species were investigated. a total of 120 fish specimens were collected by both cast net and a series of gillnets between fall and winter 2007, and spring and summer 2008. some of the observed parasites are reported for the first time as new host re...
In the present study, we investigated the effects of a sub-acute concentration of cypermethrin on some hematological parameters of Capoeta damascina. The specimens had an average weight of 150 ± 10 g and average length of 21 ± 1 cm (mean ± SD). The fish were exposed to 0, 0.25, 0.5, and 0.75 µg/L (each with 3 replicates) for 10 days. Blood samples were collected on days 1, 5 and 9. Hemoglobin (...
the present study investigated the effects of acute toxicity of malathion on behavioral and haematological parameters in the cyprinid capoeta damascina . the specimens were collected from the kordan river, karaj, iran in august, 2014 and were exposed to different concentrations of malathion at the laboratory (24, 48, 72 mg l ‑1 ) based on 96h-lc (10; 30; 50; 90) which was 6.08 (5.22-7.18) mg l ...
the fishes of capoeta genus are living in different fauna regions of iranian freshwater fishes. the parasitological studies of these fishes are important on subjects of ecology and life cycles in different fishes. the aim of this study was to study the parasites of capoeta spp. in halil-rud river, kerman province. samples were collected from the freshwater fishes (between oct. 2007 to sep. 2008...
In this paper, the metazoan parasite community system of Capoeta damascina in the Tigris basin (Mesopotamian region) in the Middle-East is presented. Overall, 54 species have been identified. Between 2005 and 2008, Iranian surveys of Capoeta damascina found a total of 47 metazoan parasites species, most identified to species level. In addition, 6 parasite species from Iraq and 1 species from oc...
Mujib and Haidan rivers were sampled in July 2011 to identify fish populations in the riverine system, and to investigate the impact caused by the existence of two dams. Fishes were sampled by electofishing gear through 14 sampling points distributed along the two rivers. The Mujib Dam lake was sampled by gillnets. A total of 2,854 fish specimen were caught during the study of which most consis...
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