mercury is one of the most toxic heavy metal which can enter the human body mainly through consumption of seafood contaminated with mercury. in this study, the human health risk due to consumption of kutum (rutilus frisii kutum), in the caspian sea, were evaluated by measuring the concentration of mercury in muscle samples using atomic absorbtion spectrophotometer (perkin elmer fias-100) and co...

the present study investigates the effects of water temperature on digestive enzymes activity and food transit time in caspian kutum ( rutilus kutum ) larvae. caspian kutum larvae (532 ± 0.05 and 543 ± 0.02 mg) were divided into two groups with three replicates and reared at different water temperature i.e. 25.6 ± 0.4°c (t 1 ) and 18.4 ± 0.1°c (t 2 ). at the end of the experiment, sampling of i...

Background: Edifenphos, a kind of organophosphate toxins, is used as agricultural fungicides in rice fields. This study was aimed to investigate the effect of temperature on lethal concentration of exposure to edifenphos on Rutilus frisii kutum (Caspian kutum). Methods: The experiment was carried out in static condition and based on instructions of OECD within 10 d under controlled water phy...

acute toxicity (96h-lc50) of potassium permanganate (pm) was determined for caspian kutum rutilus frisii kutum at two size classes (1 and 3 g). static renewal method was used. fish were exposed to different concentrations of pm and mortality was recorded thereafter, until 96 h. exposed fish showed behavioral stress indicators. 96h-lc50 was calculated to be 3.204 (3.147-3.260) mg/l for small fis...

background: marine products, especially fish, play an increasingly significant role in human diets and health. this research evaluated the concentrations of cadmium, lead, chromium, and nickel in liver and muscle tissues of rutilus frisii kutum along the caspian sea coasts of northern iran. methods: thirty samples of fishes were taken from five stations (astara, rezvanshahr, anazali, ramsar, an...

This study investigated the growth rate, proximate composition, and fatty acid profile in juvenile of kutum Rutilus frisii kutum in different dark-light cycles. Fish were stocked randomly in eighteen 2000-L fiberglass tanks and received six photoperiod regimes: natural photoperiod, 24L (light):0D (day), 16L:8D, 12L:12D, 8L:16D and 0L:24D. Application of continuous dark (0L:24D) and an intermedi...