the population genetic structure of the persian sturgeon (acipenser persicus) in the sefidrud and gorganrud river watersheds was analyzed based on the characterization of microsatellite markers. one hundred fin clip samples of persian sturgeon from the two regions were collected. four microsatellite loci (ls68, spl168, spl173, and afu68) were analyzed for molecular characterization, resulting i...

The possibility of partial replacement fish meal with alfalfa flour in feeds for the Australian red-clawed crayfish (Cherax quadricarinatus) has been investigated. Crayfish were kept aquariums a volume 150 liters at temperature 24-26.5 °C. control group was fed granular feed intended sturgeon fish. In experimental feeds, partially replaced flour. An enzyme preparation, natuzyme, added to one op...

Serbian aquaculture is practiced in warmwater (carp) farms, coldwater (trout) cage systems, recirculating systems (RAS) and fish tanks. The total area under carp farms (ponds) registered by the Statistical Office of Republic Serbia (SORS) last fourteen years has varied between 6,192 8,940 ha, while trout was 33,255 m2 81,411 m2. Total production over 5,070 tons, recorded 2017 8,195 tons market ...

Background: Hormones regulate the expression of multiple phenotypic traits. Therefore, divergence in hormone concentrations may lead to evolutionary changes in the coordinated physiological and behavioural traits that comprise an organism’s integrated phenotype. Adults of marine ecotypes of threespine stickleback (Gasterosteus aculeatus) have higher concentrations of the thyroid hormone thyroxi...

OBJECTIVE Intentional weight loss is recommended for those with type 2 diabetes, but the strategies patients attempt and their effectiveness for weight management are unknown. In this investigation we describe intentional weight loss strategies used and those related to BMI in a diverse sample of overweight participants with type 2 diabetes at enrollment in the Look AHEAD (Action for Health in ...

A 60-day feeding trial was conducted to evaluate the potential of using poultry by-product meal (PBM) as a partial replacement for fish meal (FM) in the diets for juvenile sobaity. Six iso-nitrogenous and iso-lipidic diets were formulated to contain graded levels of PBM, at 0 (as control diet), 15, 25, 35, 45, and 55% of FM replacement. Each diet was fed to groups of 20 juvenile sobaity in trip...

The effect of intermittent feeding on growth, feed utilization and body composition of subadult olive flounder fed extruded pellet (EP) in suboptimal temperature (13.5±2.10°C) was determined. Two hundred twenty five subadult fish averaging 272 g were randomly distributed into fifteen of 300 L circular flow-through tanks (fifteen fish per tank). Five treatments with different days of feeding a w...

The effects of stocking density of eggs and larvae were studied related to the morphological deformities appearance, percentage of survival, and growth rate, in order to achieve the most suitable stocking density for eggs and larvae in incubators and rearing tanks. The egg stocking densities were 500, 700 and 900 g per incubator for great sturgeon, 500 and 1000g per incubator for Persian sturge...