TY - JOUR ID - 114357 TI - UV-B impacts on morphology and retina of Oncorhynchus mykiss larvae JO - Iranian Journal of Fisheries Sciences JA - IJFS LA - en SN - 1562-2916 AU - Dargaei, Z AU - Sharifpour, I AU - Zorriehzahra, J AD - Y1 - 2014 PY - 2014 VL - 13 IS - 2 SP - 289 EP - 302 KW - Ultraviolet-B KW - Larvae KW - Oncorhynchus mykiss KW - Morphological malformatoion KW - Hitsophatological changes DO - 10.22092/ijfs.2018.114357 N2 - The harmful effects of ultraviolet radiation on aquatic animals, due to ozone layer reduction, have been long studied in recent years. Exposure of Rainbow Trout larvae (Oncorhynchus mykiss) to Ultraviolet-B radiation (UV-B) at different doses (68.75 µw/cm2 and 94.83 µw/cm2 as the minimum and maximum dose of UV-B in natural environment respectively) for 15 minutes once a day in dark condition in comparison to control group (without any solar or UV) showed a wide variety of body abnormalities and eye damages. Body curvature, yolk sac edema, fin blistering, dwarfism, eye and head abnormalities as morphological malformations were revealed during the experiment, none of the malformations were observed in control group. Histopathological changes in retina such as irregular and discontinues pigmented epithelium, necrosis of photoreceptors and degeneration of nucleus layers confirmed the destructive effects of UV-B radiation in the eyes of Rainbow Trout. Such changes in larvae can be valid as bio-indicator for pollution and UV radiation and also introduce fishes as model for toxicological studies. UR - https://jifro.areeo.ac.ir/article_114357.html L1 - ER -