نتایج جستجو برای: gill myxoboliasis

تعداد نتایج: 7508  

2005
STEFAN NILSSON

The two rows of filaments on fish gill arches are arranged in the respiratory water current to maintain a continuous 'gill curtain'. The position of the filaments is controlled mainly by striated adductor muscles, which can draw together the filaments, and also by the elasticity of the cartilaginous filamental skeleton (gill rods) which tends to keep the filaments extended in water. In addition...

Journal: :Journal of invertebrate pathology 2001
P M Schuwerack J W Lewis P W Jones

The impact of microbial gill infestations on the pathology and physiology of the freshwater crab Potamonautes warreni was investigated by comparison of infested and uninfested crab populations from, respectively, a polluted and an unpolluted site along the Mooi River, North West Province, South Africa. Heavy gill infestations by bacteria (70%), peritrichous ciliates such as Lagenophrys sp. (15%...

Journal: :international journal of marine science and engineering 2012
f. shariati a. esmaili sari a. mashinchian moradi m. pourkazemi

tissue metal accumulations (gills, liver, kidney and muscle) in persian sturgeon (acipenser persicus) were compared folowing exposure to sublethal levels of waterborne cd (50, 400 and 1000 μg•l-1) after periods of 1, 2, 4 and 14 days. the obtained results indicate that at the end of 4 and 14 days of exposure, total tissue cadmium concentration followed the pattern: liver > gill > kidney > muscl...

Journal: :international journal of marine science and engineering 0
f. shariati department of marine biology, faculty of marine science and technology, science and research branch, islamic azad university, tehran, iran a. esmaili sari department of environment, natural resources and marine science faculty, tarbiat modares university, noor, iran a. mashinchian moradi department of marine biology, faculty of marine science and technology, science and research branch, islamic azad university, tehran, iran m. pourkazemi international sturgeon research institute, rasht, guilan, iran

tissue metal accumulations (gills, liver, kidney and muscle) in persian sturgeon (acipenser persicus) were compared folowing exposure to sublethal levels of waterborne cd (50, 400 and 1000 μg•l-1) after periods of 1, 2, 4 and 14 days. the obtained results indicate that at the end of 4 and 14 days of exposure, total tissue cadmium concentration followed the pattern: liver > gill > kidney > muscl...

Journal: :British Dental Journal 2012

Journal: :محیط زیست طبیعی 0
فاتح معزی کارشناس ارشد اکولوژی آبزیان شیلاتی، گروه شیلات، دانشکدة منابع طبیعی، دانشگاه تهران آرش جوانشیر دانشیار گروه شیلات، دانشکدة منابع طبیعی، دانشگاه تهران سهیل ایگدری استادیار گروه شیلات، دانشکدة منابع طبیعی، دانشگاه تهران هادی پورباقر استادیار گروه شیلات، دانشکدة منابع طبیعی، دانشگاه تهران

nowadays, bivalves are used in monitoring levels of heavy metals in aquatic environments. the aim of this study was to investigate bioaccumulation of heavy metals zinc (zn) and chromium (cr) in the internal organs of anodonta cygnea. for this purpose, bivalve specimens were collected from semeskandeh region, sari, and then in laboratory, were exposed to 125 µg l-1 concentrations of each metal f...

Journal: :iranian journal of toxicology 0
olufemi david owolabi department of zoology, university of ilorin, ilorin, nigeria james sunday omotosho department of zoology, university of ilorin, ilorin, nigeria

background: fish have been at high risk of atrazine toxicity. comparative atrazine toxicity on the tissues of clarias gariepinus is scanty. therefore, acute and chronic effects of atrazine on some biochemical parameters in clarias gariepinus were investigated in this study. methods: atrazine toxicity was determined by assessing the responses of glucose, protein, alanine aminotransferase (alt), ...

Journal: :Folia parasitologica 2012
Lilia C Soler-Jiménez Emma J Fajer-Avila

The spatial distribution and coexistence of monogenean dactylogyrids was assessed on the gills of 63 specimens of wild spotted rose snapper, Lutjanus guttatus (Steindachner), caught in the Mazatlan Bay, Sinaloa, Mexico. Five species are reported: Euryhaliotrema perezponcei Garcia-Vargas, Fajer-Avila et Lamothe-Argumedo, 2008, Euryhaliotrematoides sp., Haliotrematoides spinatus Kritsky et Mendoz...

2006
Richard N. Morrison Glenn A. Cooper Ben F. Koop Matthew L. Rise Andrew R. Bridle Mark B. Adams Barbara F. Nowak

Neoparamoeba spp. are amphizoic amoebae with the capacity to colonize the gills of some marine fish, causing amoebic gill disease (AGD). Here, the gill tissue transcriptome response of Atlantic salmon (Salmo salar L.) to AGD is described. Tanks housing Atlantic salmon were inoculated with Neoparamoeba spp. and fish sampled at time points up to 8 days post-inoculation (p.i.). Gill tissues were t...

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