Concentration of heavy and toxic metals Cu, Zn, Cd, Pb and Hg were determined in liver and muscles of Rutilus frisii kutum and their relationships with growth parameters (length, age, condition factor) and hepatosomatic index were examined. Thirty-six fish samples were collected from February through March 2009 caught by beach seine in the southwest parts of the Caspian Sea. Atomic absorption ...

A study was undertaken to determine the influence of the dietary levels of inositol on growth performance, feed utilization, immune response and resistance of Nile tilapia to Streptococcus iniae challenge. Six isonitrogenous (38% crude protein), isocaloric (3300 kcal DE/kg) purified diets supplemented with graded levels of inositol (0.0, 50, 100, 200, 400 or 800 mg/kg diet) were fed to juvenile...

The influence of dietary lipid level on growth, survival, and proximate composition of juvenile redclaw crayfish was evaluated during a 12-week growth trial utilizing semi-intensive culture conditions. Four diets were formulated to be isoenergetic (17.58 kJ g ) and isonitrogenous (30% crude protein). Three of the diets were designed to contain 4.2% (L4), 8.2% (L8) and 12.3% (L12) lipid in a 1:1...

Cortisol, 11-deoxycorticosterone, progesterone, 17 alpha-hydroxy-progesterone, 17 alpha-hydroxy-20 beta-dihydroprogesterone, or a combination of the last 2 steroids, were injected into different groups of immature female Epinephelus. None of the steroids tested had significant effects on serum electrolyte level, and hepatosomatic and gonadosomatic indices. Serum glucose concentration was elevat...

Bioaccumulation of Cu, Zn, Hg in muscles and liver tissues of stellate sturgeon (Acipenser stellatus) from the southern Caspian Sea was measured. Effects of condition factor (CF), age and hepatosomatic index (HSI) on metal accumulation were also determined. Some 40 stellate sturgeons were collected using gill nets in winter and spring 2007-2008 from the southern shores of the Caspian S...

Imazethapyr is an herbicide that used in a variety of crops worldwide, including soybean and corn. The aim the present study was to evaluate biomarkers responses adult Leptodactylus latinasus exposed formulation Pivot® H (10.59% imazethapyr) laboratory at concentrations under conditions simulate two potential field exposure scenarios: immersion runoff (Scenario 1: 10 mg/L) direct droplets emitt...

Turbot ( Scophthalmus maximus ) is an important marine fish both in Europe and North China. Although there are plenty of studies on the reproduction turbot, complete cytological process spermatogenesis remains unclear. In this study, we investigated submicroscopic structure total 23 types male germ cells throughout breeding season, with a relatively primary spermatocytes. We found that spermati...