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Open Access Article

1 - Determination of physicochemical parameters and heavy metals in Jajrood River, Parchin area
E. Shirvani Mahdavi H. Pasdar

This study has been carried out for determination of physicochemical parameters and concentration of Pb, Cd, Cr and Ni in JajroodRiver, Parchin area. The correlation between determined parameters with distance sampling was studied, and then they were compared to standar More

This study has been carried out for determination of physicochemical parameters and concentration of Pb, Cd, Cr and Ni in JajroodRiver, Parchin area. The correlation between determined parameters with distance sampling was studied, and then they were compared to standard values in drinking water and to water which is used for breeding Onchorhynchus mykiss. Sample taking was carried out in random in February 2008 for eight stations in the distance of 4km.In the above stations samples were collected with standard methods, and pH, EC, DO, and temperature values were determined by portable instruments. The other parameters were determined in laboratory. In order to study the concentration of heavy metals, flame atomic absorption was employed. The results showed that the most effective parameters in water are temperature, turbidity,total total dissolved solids, dissolved Oxygen and conductivity. The concentration of phosphate and the other soluble materials are less significant. It was found that Calcium Chloride plays the most important role in increasing the electrical conductivity of water. moving down the river conductivity increases, whereas concentration of nitrate ion increases. By comparison of physicochemical parameters of the samples to standard values in Iran, it was found that turbidity of the samples showed significant differences with standard values (P<0.01) for drinking water and turbidity, electrical conductivity, concentration of Chloride ion and nitrate ion of the samples showed a significant difference with standard values for water which is used for breeding Onchorhynchus mykiss (P<0.01). Investigation showed that concentration of Pb, Cd, Cr, and Ni were very low therefore it is suitable for drinking water and breeding Onchorhynchus mykiss.  Manuscript profile

Open Access Article

2 - Investigation of some biological aspects of Cobitis taenia, index of clean water, Talar River (Mazandaran Province)
A. Ashja Ardalan S. Bahrebar R. Mousavi Nadushan S. Vatandoust

In this study some of the biological aspect like age and growth, length and weight and longitudinal growth of Cobitis taenia which have been fished in Talar River has been reviewed. Samples were taken from two locations, 20 km apart, from Oct. 2008 up to Sept. 2009. Sam More

In this study some of the biological aspect like age and growth, length and weight and longitudinal growth of Cobitis taenia which have been fished in Talar River has been reviewed. Samples were taken from two locations, 20 km apart, from Oct. 2008 up to Sept. 2009. Samples were collected monthly by using an Electro-shocker machine .Collectively 410 speciemen of Cobitis taenia were obtained. Fishes have been examined for sex identification and 158 male , 119 Female and 133 immature have been determined from two locations during one year. This sampels belonged to 4 age groups of females and males. The proportion of male to female was 1/3 to 1. The relation between length and weight of males and females was W=0/671×TL+0/043 & W=1/593×TL+0/061. Growth parameters of Vonbertalanfi equation for males and females fish were as follows: L∞:680/09 K: 0/04 t0:0/106. Difference of Length Frequency distribution among males and females regarding the age were significant (P<0/05) the male fish had more frequency in the short length. The frequency for males, females and immatures was estimated to be32/4, 29 and 38/5percent. The weight and length of females was more than males. Average age for males was 0- 2 years and for females is 0- 3. Dominant age and average age for all fish were estimated to be 1 and 1/07 respectively. Manuscript profile

Open Access Article

3 - AN investigation on environmental impact of Polrud Dam and providing strategies reducing environmental impacts
M. Moradi S. M. T. Sadatipour N. M. Sharifloo M. Zaeimdar

Polrud dam is constructed on PolrudRiver, at 17 kilometers southwest of Kalachay city in EastGilanProvince. The capacity of the dam is 30 million cubic meters. The main goal of this study is to investigate adverse effects of the constructed dam. Also, a mitigation plan More

Polrud dam is constructed on PolrudRiver, at 17 kilometers southwest of Kalachay city in EastGilanProvince. The capacity of the dam is 30 million cubic meters. The main goal of this study is to investigate adverse effects of the constructed dam. Also, a mitigation plan was recommended. To achive this goal, some information was gathered about physical, biological, socio – economic characteristics of the up stream basin of the dam. In this paper, list of activities performed during the construction of the dam, was introduced in details. The combination matrix method (LEOPOLD & ICOLD) was applied to quantify the effects of such activities on the environment. Results of aggregate values for matrix,showed that 47 percent of values were negative and others were positive. Negative impacts (permanent or temperate) were not more than 50 percent of total. Hence construction and operation of polrud dam in the viewpoint of environmental management is justifiable. an dir=LTR> ICOLD   Manuscript profile

Open Access Article

4 - Food regim of wild Common carp (Cyprinus carpio) in Golestan Provise, Gomishan coastal area (Caspian Sea)
A. Vosoughi R. Mousavi Nodoushan E. Abbasi E. Zaree F. Alasvandi Toghyan

This research was conducted based on fishing season (autumn and winter) from October 2009 till March 2010 on 180 Wild Common carps (Cyprinus carpio) captured in the coast of Gomishan area in Golestan province,locate sout-east of Caspian Sea.Specimens were collected duri More

This research was conducted based on fishing season (autumn and winter) from October 2009 till March 2010 on 180 Wild Common carps (Cyprinus carpio) captured in the coast of Gomishan area in Golestan province,locate sout-east of Caspian Sea.Specimens were collected during 6 months (at least 6 times per month). All specimens were collected from beach seines in the field. Biometric parameters such as total length and weight were measured from all 180 collected specimens and registered in biometric forms. The autopsy was done and the guts were placed in 4 % formalin and transported to Biology Lab of Marine Science and Technology Faculty, North Tehran Branch Islamic Azad University. The the content of gut was emptied and examined. The gut relative length factor (RLG), gut vacuity Index (VI), gut fullness Index (GSI), frequency index (FP) of consumed food items & condition of factor (K) were determind. Statistical analysis was done using T-test and oneway ANOVA. Graphs were made software. The average of relative length of gut of all age groups (2+-10 years) was 1.67 ±0.11 cm; the results of statical tests were not significantly differents during various seasons (P> 0.05). The average of gut fullness index was 22.63 ±9.99; the results were significantly different during various seasons (P< 0.05). The (VI) was calculated 71.11%, which shows these species are abstemious. Gut content included Ploychaeta, Oligochaeta, Bivalvia, Gastropoda, Ostracoda, Foraminifera, Gobiidae fish remains, Invertebrate eggs, Crab and Parts of plants. Greatest value of (FP) among all age groups belonged to Polychaeta (63.89%).Values of the index showed no significant different in the period (P>0.05). Polychaeta(63.89%) were the main food (FI>50%); Bivalvia(35.00%) , Parts of plants(34.11%) ,Balanus(16.11%) , Crab(32.22%) , Fish remains(44.22%), Oligochaeta(11.67%) , Invertebrate eggs(42.78%) , Gastropoda(36.67%) , Trematod(25.54%) and Ostracoda(12.78%)  were occasional food (10%<FI<50%) , Cumacea(6.67) , Amphipoda(2.78), , Foraminifera(3.33) were random food (FI<10%). The average of index of (K) was 1.39 during the period which shows good nutrition in Wild Common carp. Manuscript profile

Open Access Article

5 - Effect of Cu 2+ on cell number and chlorophyll a content of green alga Scenedesmus obliquus
H. Keyhanian F. Rafiee K. Mehdinejad E. Shirvani

Aquatic environments are often exposed to heavy metals, this can affect aquatic organisms. The effect of Cu 2+ on cell density and chla content of  S.obliquus was studied. The algae were grown for 5 days at temperature of 2± 23  ˚c and light intensity o More

Aquatic environments are often exposed to heavy metals, this can affect aquatic organisms. The effect of Cu 2+ on cell density and chla content of  S.obliquus was studied. The algae were grown for 5 days at temperature of 2± 23  ˚c and light intensity of 300 lux on z8 medium .Copper  treatment was carried out at a concentration of 0 (control) ,2,4,,6 and 8 mgl-1. Cell counting was performed at 0,24,48,72 and 96 hours using heamocytometer and amount of chla was determined at the same hours. There was a significant difference between time and treatments (p< 0.05). The difference of cell density was significant between control and metal concentrations, 2,4 mgl-1 with 6,8 mgl-1. In control groups, the cell density and chla content were increased with time. On the other hand, the content of chla and cell number reduced with Cu2+ . The concentration of Cu2+ from 2 to 8 mgl-1 inhibited cell density from 72.09% ( 2mg.l-1 , 96 h) to 92.33% ( 8mgl-1,96 h), respectively. In the Cu2+ treatments the death of algal biomass was observed in 24 h, but there was an increase in cell numbers of S.obliquus in control and the algae were still on exponential phase at 96 h. Manuscript profile

Open Access Article

6 - Identification and assessment diversity of Polychaeta of Mongoft Artificial Reef structures in Bushehr Province, Persian Gulf
A. Vosoughi H. Hossein Zade Sahafi A. Rajabi E. Rad

The present study was conducted for identification and assessment biodiversity of Polychaeta of Mongoft Artificial Reef structures in BushehrProvince. At first, 3 stations were selected. Seasonal samples were collected in spring and summer 2009, with 3 replication by d More

The present study was conducted for identification and assessment biodiversity of Polychaeta of Mongoft Artificial Reef structures in BushehrProvince. At first, 3 stations were selected. Seasonal samples were collected in spring and summer 2009, with 3 replication by diving operations, using Quadrates from each station was done. In total 7 species of Polychaeta were identified. Maximum frequency of Polychaeta, 644.64 n / m2, in the spring and the minimum number of 204 was recorded in summer. Results showed that Nereis sp. with 277.44 n / m2 (32.69 %) in the seasons and sampling stations was the most abundant. ANOVA results identified significant differences between the number of Polychaeta of the two seasons (P<0.05). In review of the biological indices, greatest Shannon diversity index was in station 1 in the spring with the amount of 1.83 and smallest Shannon diversity index in to  the station 1 was in the summer with the amount of 0.50 has been. Indices were compared to determine that spring was diversity more diverse than summer. Considering the values obtained, biological indices it can be concluded that the region is exposed to stress, and it can affect the diversity of benthic fauna.   Manuscript profile

Open Access Article

7 - Evaluation of anti carcinogenic effect of Artemia urmiana by using method of Ames
S. Mehrabian M. Abbasi

Free radicals are produced during oxidative metabolism in body and they can attack to all of component of cells and cause cellular changes and early aging. Antioxidant materials role for balance maintenance in cells has currently attracted more attention. The aim of th More

Free radicals are produced during oxidative metabolism in body and they can attack to all of component of cells and cause cellular changes and early aging. Antioxidant materials role for balance maintenance in cells has currently attracted more attention. The aim of this study is investing of antimutation effect of Artemia, cyst and decapsulated egg extract by Ames test and Salmonella typhimurum TA 100 strain. These extract prevent reverse mutation caused by carcinogenic materials. In comparison with positive controls (sodium azid, KMno4, cresol) and negative control (distilled water) antimutagenicity properties of Artemia was evaluated and confirmed. In addition, the value of Astaxanthin in those extracts was assayed. for quality analysis and separation of Astaxanthin, we used TLC chromatography and column chromatography, respectively. Then, the presense of Astaxanthin in these extracts was confirmed by spectrometer IR test. The results showed that antimutagenicity properties of Artemia urmiana are the same with other salty water Artemia. Antimutagenicity and anticarcinogenicity properties in decapsulated egg, dried artemia and cyst are %85, %70 and %100 respectively. Manuscript profile

Open Access Article

8 - Determination of heavy metals in Rutilus frisii kutum and Cyprinus carpio Fishes of Caspian Sea
A. Elsagh

The proteins in fish, as well as other aquatic animals has nowadays become an important protein source in many people's diets around the world and as a results, there has been a growing interest to ensure the health of this important food source. Heavy metals due to the More

The proteins in fish, as well as other aquatic animals has nowadays become an important protein source in many people's diets around the world and as a results, there has been a growing interest to ensure the health of this important food source. Heavy metals due to their specific physical and chemical characteristics as well as their effects on various ecosystems are considered as a major contaminant of marine environments. Therefore determining the level of heavy metals in water and aquatic species, as a link in the food chain of human beings, is of a great importance. In this study, levels of some heavy metals were evaluated,using  flame atomic absorption spectroscopy (A.A.S) technique, in tissues of two commonly consumed fish in Iran namely Rutilus frisii kutum and Cyprinus carpio collected from the south coastline of the Caspian Sea. The average concentration of  Zn , Cd , Fe and Cu were detected as (μg g-1) dry weight of Rutilus frisii kutum’s tissues : 32.400 1.015, 1.205 0.157, 90.716 0.200 and 9.455 0.215 respectively. These values for Cyprinus carpio were detected as: 30.204 0.282, 1.353 0.179, 85.887 0.267 and 9.144 0.178.  Manuscript profile

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