نتایج جستجو برای: anodonta

تعداد نتایج: 183  

Journal: :محیط شناسی 0
لالیک ساریخانی کارشناس ارشد شیلات، مرکز تحقیقات شیلات استان گلستان آرش جوانشیر استادیار دانشکدة منابع طبیعی دانشگاه تهران

in this study the filtration rate of nitrogen and phosphorus components by swan mussel anodonta cygnea in a closed system was investigated. the system was built of a 100 liters main tank and 4 recipients of 2.5 liters each (one of these as control) and one tank for returning of water. three treatments of different concentrations of nitrogen (80, 100 and 200 mg/l) and of phosphorus (20, 40 and 6...

Journal: :Hydrobiologia 2021

Abstract Global decline of freshwater mussels (Unionoida) is threatening biodiversity and the essential ecosystem services that provide. As filter-feeding organisms, remove phytoplankton suspended particles from water. By filtering bacteria, also decrease pathogen loads in The objective this study was to evaluate whether common bivalve Anodonta anatina (duck mussel) could bacterial fish Flavoba...

Journal: :Aquatic Conservation: Marine and Freshwater Ecosystems 2020

Journal: :The Journal of Biophysical and Biochemical Cytology 1961
I. R. Gibbons

This paper describes the fine structure and its relationship to the direction of beat in four types of cilia on the gill of the fresh-water mussel Anodonta cataracta. The cilia contain nine outer, nine secondary, and two central fibers, such as have been described previously in other material. Each outer fiber is a doublet with one subfiber bearing arms. One particular pair of outer fibers (num...

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