نتایج جستجو برای: for 21 days respectively. tissue specimens including gill

تعداد نتایج: 10992522  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...

Journal: :زیست شناسی جانوری تجربی 0
بهروز حیدری استادیار، گروه زیست شناسی، دانشکده علوم پایه، دانشگاه گیلان ساناز آورجه کارشناسی ارشد، گروه زیست شناسی، دانشکده علوم پایه، دانشگاه گیلان حسن تقوی جلودار استادیار، گروه زیست شناسی دریا، دانشکده علوم دریایی و اقیانوسی، دانشگاه مازندران

abstract environmental factors including salinity and temperature can affect the physiology and performance of the growth of fish, so many of internal organs such as gill may be showed wide range of morphological and functional changes. fingerling common carp were exposed for 21 days in groups at 20, 25 and 30°c and three salinity levels 0, 5 and 10ppt. histological changes of gills tissue of c...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده پزشکی 1390

nitric oxide (no) is a small molecule synthesized by most of mammalian cells with diverse biological activities including vasodilatation, host defense and wound healing. impaired wound healing is a common occurrence among diabetics and patients receiving glucocorticoid therapy. on the other hand the application of laser in biomedical area have been increased. thus, the current studies were desi...

Journal: :دامپزشکی 0
علیرضا پورخباز عضو هیات علمی گروه محیط زیست دانشگاه بیرجند زهرا محسنی دانشجوی کارشناسی ارشد گروه محیط زیست دانشگاه بیرجند

contamination of aquatic ecosystems with heavy metals has been receiving increased worldwide attention due to their harmful effects on human health and other organisms in the environment. the aim of this study is to elucidate the accumulation and elimination of copper metal on the gill, muscle and skin tissues of black fish, capoeta fusca. sampling was carried out from qantas of birjand area in...

ژورنال: زیست شناسی دریا 2019
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The aim of this study was evaluate tissue lesions caused by black gill disease and its causes in 85-80 days old Litopenaeus vannamei with an average weight of 13-15 g located in the Delvar shrimp rearing site from Bushehr province. Primary and secondary gill lamella was necrosis, central axis were not arranged and gill lamella swelling, epithelial cell necrosis along with karyorrhexis and pykno...

In the present study histological effects of copper and Zinc sulphate on, 250 Caspian beluga (Huso huso) fingerlings were studied. In this regard, fish of treatment groups were exposed to 0.1, 0.2, 0.4, 0.6, 0.7 and 0.8 mg/l of copper and 5, 25, 50, 75, 80 and 85 mg/l of Zinc sulphate during 4 days respectively. Behaviours and clinical signs of fish were recorded during the experiment. Samples ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

based on the latest records of typhlops vermicularis merrem, 1820 from iran, this species is distributed in the northern and southern regions of the country. in this study, new records of typhlops vermicularis are presented and it is shown that distribution range of this species is extended towards the eastern and western iran, and according to the new distribution map, it can be assumed that t...

Journal: :International Journal of Fisheries and Aquatic Studies 2022

This study was conducted to ascertain the toxicity effect of Indigofera tinctoria on haematology and oxidative stress biomarker liver, kidney, gills, tissue Nile tilapia (Oreochromis niloticus) juveniles. Matured leaves were collected, dried, pulverized. Graded levels leaf powder weighed dissolved in 250 ml water. Fish specimens exposed sub-acute concentrations for 21 days. Significant changes ...

Journal: :دامپزشکی 0
معصومه آریایی گروه محیط زیست، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران امیرحسین حمیدیان گروه محیط زیست، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران سهیل ایگدری گروه شیلات، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران سهراب اشرفی گروه محیط زیست، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران

in aquatic ecosystems, pollutants including heavy metals cause pathological alternations in fishes. as, the impacts of pollutants are affected by chemical properties of water, this study was conducted to compare the histopathological effects of two heavy metals as and cd on gill structure of aphanius sophiae. a total of 350 specimens were collected from the shoor river of eshtehard during the s...

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