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Keyvanshokooh S.,Khorramshahr Marine Science and Technology University | Gharaei A.,University of Zabol
Aquaculture Research | Year: 2010

The availability of monosex populations of caviar-producing female sturgeon would considerably enhance the economic viability of domestic caviar production systems. However, it is not possible to distinguish males from females by morphological characters at larval, juvenile and even adult stages. The mechanism of sex determination in sturgeons is poorly understood, and to date no sex-specific markers in sturgeon have been reported. This review concentrates on the methodologies used to elucidate the mode of sex determination in sturgeon species and provides information on the molecular tools used to determine genetic sex markers. © 2010 The Authors. Journal Compilation © 2010 Blackwell Publishing Ltd.

Azarm H.M.,Khorramshahr Marine Science and Technology University | Lee S.-M.,Gangneung - Wonju National University
Aquaculture Research | Year: 2014

A feeding trial was conducted to evaluate the effect of replacing fish meal protein with fermented soybean meal (FSM) on the growth performance, feed utilization, amino acid profile, body composition, morphological parameters, activity of antioxidant and digestive enzymes of black sea bream (Acanthopagrus schlegeli) juvenile. Five isonitrogenic and isolipidic diets were prepared with levels of 0 (control), 80, 160, 240 and 320 g kg-1 FSM. Triplicate groups (40 fish per tank) of juvenile black sea bream with initial weight of 1.17 ± 0.04 g were hand-fed to visual satiation at three meals per day for 8 weeks. The fish fed diets containing different levels of FSM had no significant differences regarding survival and specific growth rate compared with control group. Feed and protein efficiency ratios of fish fed diet containing 320 g kg-1 FSM were significantly lower than those of control group. Daily feed intake and daily protein intake of fish fed diet containing 240-320 g kg-1 were significantly higher than those of control group. Hepatosomatic index and condition factor of fish were not affected by different dietary FSM level. Fish fed diets containing 240-320 g kg-1 FSM had significantly higher visceral somatic index than control group. Whole body proximate and amino acid compositions of fish were not affected by dietary FSM level. The activity of digestive enzymes in the intestine was not affected by dietary FSM level. The activity of glutathione peroxidase in liver was significantly higher for fish fed the diet containing 160 g kg-1 FSM compared with control group. This study showed that up to 40% fish meal in the diets of juvenile black sea bream could be replaced by fermented soybean meal with supplementation of methionine, lysine and taurine. © 2012 John Wiley & Sons Ltd.

Chaharlang B.H.,Islamic Azad University | Bakhtiari A.R.,Tarbiat Modares University | Yavari V.,Khorramshahr Marine Science and Technology University
Bulletin of Environmental Contamination and Toxicology | Year: 2012

The levels of Cd, Cu, Pb and Zn in surface sediment, soft tissue and shell of the oyster Saccostrea cucullata collected from three locations, in the intertidal zones of Lengeh Port, northern part of Persian Gulf were measured. Results indicated that there were a positive correlation across Zn (r = 0.58, p = 0.025), Cd (r = 0.74, p < 0.01) and Cu (r = 0.80, p < 0.01) levels in the soft tissue of oyster and sediment which supported this fact that the soft tissue of S. cucullata can be considered as biomonitoring agent for Cd, Zn and Cu in the Lengeh Port. © Springer Science+Business Media, LLC 2012.

Karimi-Maleh H.,Kerman Graduate University of Technology | Biparva P.,Sari University of Agricultural Sciences and Natural Resources | Hatami M.,Khorramshahr Marine Science and Technology University
Biosensors and Bioelectronics | Year: 2013

A carbon paste electrode (CPE) modified with (9, 10-dihydro-9, 10-ethanoanthracene-11, 12-dicarboximido)-4-ethylbenzene-1, 2-diol (DEDE) and NiO/CNTs nanocomposite was used for the sensitive voltammetric determination of cysteamine (CA), nicotinamide adenine dinucleotide (NADH) and folic acid (FA) for the first time. The synthesized materials were characterized with different methods such as XRD, cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and square wave voltammetry (SWV). The modified electrode exhibited a potent and persistent electron mediating behavior followed by well-separated oxidation peaks of CA, NADH and FA. The peak currents were linearly dependent on CA, NADH and FA concentrations using square wave voltammetry (SWV) method in the ranges of 0.01-250, 1.0-500, and 3.0-550μmolL-1, with detection limits of 0.007, 0.6, and 0.9μmolL-1, respectively. The modified electrode was used for the determination of CA, NADH and FA in biological and pharmaceutical samples. © 2013 Elsevier B.V.

Hedayati A.,Gorgan University of Agricultural Sciences and Natural Resources | Safahieh A.,Khorramshahr Marine Science and Technology University
Toxicology and Industrial Health | Year: 2012

This study was undertaken in two separate environmental and experimental conditions. The environmental test was carried out at creeks in the Persian Gulf and the experimental test was undertaken in seawater re-circulatory tanks. Mercury concentrations were determined using a standard cold vapour atomic absorption method. Serum enzymes were determined with Diagnostics Infinity reagent kit. Serum glucose and total protein were measured photometrically. Serum hormones were assayed using diagnostic ELISA kits. Results of the present investigation indicated that the sub-acute and chronic mercury concentrations tested may cause several changes in the biochemical and hormone parameters of the studied fish and we can use these changes as biomarkers for mercury detection. The range of mercury concentrations found in the creek water and specially sediments along the Mahshahr coast was higher than the other marine environment. It was declared that between enzymatic indices serum acid phosphatase (ACP) amount and ACP activity, between hormonal indices testosterone, T3 and T3/T4 and between metabolite index total protein can be considered as suitable and effective biomarkers of mercury pollution in yellowfin seabream. © 2011 The Author(s).

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