نتایج جستجو برای: واژههای کلیدی astacus leptodactylus
تعداد نتایج: 43490 فیلتر نتایج به سال:
the freshwater crayfish of the aras reservoir is an important economic fisheries resource of west azarbaijan, iran. this study was conducted to evaluate the prevalence of parasitic infestation of crayfish seasonally in this area in 2010. among 390 different sizes of astacus leptodactylus which were examined, a range of ectocommensals or ectosymbionts from a number of different phyla including ...
The use of biofloc technology (BFT) in narrow-clawed crayfish (Astacus leptodactylus) culture for 45 days was evaluated by production performance and physiological status crayfish. Four different stocking densities were tested BFT (20, 41.66, 62.5, 83.33 individuals m-2). Water quality parameters monitored to sustain desired levels management. growth did not show any significant differences amo...
The purpose of this study was to evaluate the effects of zinc oxide nanoparticles and ions on intestinal tissue histopathology of freshwater crayfish (Astacus leptodactylus) under laboratory conditions. We evaluated two concentrations of zinc oxide nanoparticles and zinc ions (0.5 µm/l and 1.0 mg/l) with a control group. After 14 days of exposure to the nanoparticles of zinc oxide and zinc ions...
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