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The Effects Of Toxic Aluminium And Low Ph On Gill Development Of Rainbow Trout ( Oncorhynchus Mykiss, Walbaum) Larvae., Meti̇n Çalta
The Effects Of Toxic Aluminium And Low Ph On Gill Development Of Rainbow Trout ( Oncorhynchus Mykiss, Walbaum) Larvae., Meti̇n Çalta
Turkish Journal of Zoology
In this study, the gill development of rainbow trout ( Oncorhynchus mykiss Walbaum) larvae exposed to toxic aluminium (200 ?g/L), those exposed low pH (4.5) alone and those exposed to both for 30 days were investigated under scanning electron microscopy. General appearance of gills, filament and lamella lengths and the number of lamellae per filament were determined in order to evaluate the effects of these toxicants on gill development. In addition, the death rates and general conditions of larvae were observed. In larvae exposed to low pH alone and in those exposed to aluminium alone, a slight thickness in the …
Changes In The Whole Body Mineral Concentration Of The Rainbow Trout (Oncorchynchus Mykisswalbaum) Yolk-Sac Fry Exposed To Various Combinations Of Aluminium And Calcium Concentrations In Two Different Acidic Water, Meti̇n Çalta
Turkish Journal of Zoology
The effects of 12 combinations of pH (4.5 and 7.0), aluminium (4 and 8 ?mol/L) and calcium (10 and 100 \mumol/L) on survival and body mineral (Ca, Mg, K and Na) concentrations of rainbow trout ( Oncorhynchus mykissWalbaum) at the yolk-sac stage were investigated. Mortality was low (< 17%) in most combinations and increased (> 27%) in the presence of aluminium and low pH (4.5). Aluminium (4 and 8 ?mol/L) impaired larval development, net uptake of calcium, potassium and sodium, and slightly increased the net loss of magnesium. It was found that these effects of aluminium were more severe at low calcium concentration (10 ?mol/L) and low …