جستجوی مقالات مرتبط با کلیدواژه « cyprinus carpio » در نشریات گروه « مهندسی دریا »

Blood parameters often are used as indicator for stress and health condition evaluation in fishes. The aim of this study was to compare the blood and biochemical indices between stellate sturgeon (Acipenser stellatus) and Common Carp (Cyprinus carpio). In total, 20 brood stock fish (including 10 of each species) were selected and blood samples were taken. Results showed that mean levels of red blood cells (RBC), white blood cells (WBC), haematocrit (Hct), hemoglobin (Hb), cholesterol and osmolarity in Common Carp were more than Stellate sturgeon and showed no significant difference (P>0.05). Differential count of leucocytes showed that mean level of lymphocytes percent in A. stellatus was more than C.carpio, whileneutrophile, Eosynophile and monocyte in C.carpio were morethan A. stellatus with no significant difference (P>0.05). Mean level of Glucose in C.carpio was significantly more than A. stellatus (P<0.05). Mean levels of triglyceride, albumin and total protein in A.stellatus was significantly more than C.carpio (P<0.05). Cytomorphological parameters of RBC such as cell area, nucleus area and MCV in A.stellatus was significantly more than C. carpio. The results indicated that the levels of some blood parameters were different between stellate sturgeons (Acipenser stellatus) in comparison with Common Carp (Cyprinus carpio) which can be related to their difference in development levels.

This study aims to investigate the effect of vitamin C with in the diet plan of Cyprinus carpio (Koi fish) will result in positive outcomes on the survival, growth performance and hematological parameters of these particular breeds. The purpose of this paper was to increase the production performance of ornamental fish species in the aquaculture with the aim to keep the time and costs to a minimum. In order to achieve these results, the author framed an experiment on 144 Koi fishes in four different groups (one control group and three treatment groups). Later on, all the four groups were fed with vitamin C rich diet (with the doze of, 200, 400, 600 mg per kg of dried ration) for two month. The biometric juveniles (total length and standard weight) of the subjects were measured every 14 days. Moreover, the calculation of growth rate, hematological rates and feeding the subjects were performed at the end of a two month time period. Results showed that addition of vitamin C in diets caused an increase in weight, in control group, whose diets were without vitamin C became in average 1.58 g, treatment 1 in average 1.73 g, treatment 2 in average 2.13 g and treatment 3 in average 4.4 g and increasing weight among groups had significant differences. Survival rates in control group was in average 84%, in treatment 1, 95%, in treatment 2, 95% and in treatment 3 was 97%, but there were no significant differences among groups. In studied fish we faced with increasing percentage of body weight of 39.71% in treatment 3 which has no significant differences with other groups. The most growth rate was assessed in treatment 3 (0.58) and it had significant difference with the control group only. Protein Efficiency Ratio in treatment 3 was in average 2g and it had no significant difference with other groups. There were no significant differences among these groups in number of white blood cells and the most number of white blood cells was assessed in control group.The number of lymphocytes were increased by the increase in the amount of vitamin C and the highest amount was reached in treatment 3, which was 70, but there was no significant difference in number of lymphocytes among groups. Finally based on results in present research, vitamin C with concentration of 600mg in kg in dry diets is recommended for increasing growth performance and hematological parameters in Koi fish.

Blood parameters are often used as indicator for stress and health condition evaluation in fishes. The aim of this study was to compare blood and biochemical indices between stellate sturgeon (Acipenser stellatus) and Common Carp (Cyprinus carpio). In total, 20 brood stock fish (including 10 of each species) were selected and their blood samples were taken. Results showed that the mean counts of red blood cells (RBC), white blood cells (WBC), percentage of haematocrit (Hct), level of hemoglobin (Hb), cholesterol and osmolarity in Common Carp was more than Stellate sturgeon, although no significant difference was observed(P≥0.05). Differential count of leucocytes showed that the mean lymphocyte percentage in A.stellatus was more than C.carpio, while there was no significant difference seen in percentage of neutrophiles, Eosynophiles and monocytes in C.carpio compared with A.stellatus (P≥0.05). Mean level of Glucose in C.carpio was significantly more than A.stellatus (P≤0.05). On the other hand, mean level of triglyceride, albumin and total protein in A.stellatus was significantly more than C.carpio (P≤0.05). Cytomorphological parameters of RBC such as cell area, nucleus area and MCV in A.stellatus was significantly more than C.carpio. Therefore, the levels of some blood parameters were different in stellate sturgeons (Acipenser stellatus) in comparison with Common Carp (Cyprinus carpio), that can be related to their development differences.

This investigation was carried out in 2013 to measure the concentration of agricultural organochlorine pesticide DDT in muscle tissues of three fish species including Cyprinus carpio, Rutilus frisii kutum & Liza auratas in eight stations in southern coast of the Caspian Sea (Bandar Torkaman, Khazarabad Sari, Fereydunkenar, Chalous, Kiashahr, Bandar Anzali, Hashtpar and Astara), Iran. In each station, five fish samples per species were caught and the concentration of the pesticide were measured by gas chromatography – electron capture detector (GCECD) in each of them. The average amount of DDT in C. carpio, R. frisii kutum & L. auratas were 0.11 ±0.24, 0.17 ±0.25 and 0.163 ±0.25 ng/g fresh weight, respectively. The most contaminated stations in terms of DDT contamination was Kiashahr (averagely, 0.64 ±0.02 ng/g based on fresh weight). In all stations, amount of DDT was lower than the maximum residue limit (0.28 mg/g fresh weight). Moreover, the level of the pesticide, DDT, in muscle tissue of the fish from all stations was not higher than acceptable daily intake (ADI). The levels of DDT in studied fishes are significantly lower than in 2008.

The aim of this research was to study the effect of the storage temperature on common carp (C. carpio) fillet’s nutritional value in a 6 months period at -18°C. Fresh carps were bought from a local aquaculture farm in Babolsar (Gilan Province, Iran) and immediately transported to laboratory and then fillets were prepared, frozen and stored at -18°C for the mentioned period; Analyses of the protein, fat, ash, moisture, TVN and amino acid contents were performed at days 0, 30, 60, 90, 120, 150 and 180; Results for the fresh to 180 days stored fillets showed 16.20/14.10% protein, 4.10/2.02% fat, 1.01/1.08 ash, 78.69/77.30 % moisture and 11.2/14.26 mg/100g TVN contents. Also it was revealed that 17 amino acids (9 essential or EAA and 8 nonessential or NE) were present in the fillets with maximum content for glutamic acid and minimum for cysteine. Total amount of EAA and NE of the fresh fillets were determined to be 77.35 and 70.40 mg/100 g, respectively, (Fresh Fillets EAA/NE ratio= 1.09) which decreased to 61.13 for EAA (P0.05) and 61.85 for NE (P0.05) at the end of the period (180 days stored Fillets EAA/NE ratio= 0.988). In conclusion, it should be declared that changes of essential amino acid contents and total volatile nitrogen, protein and fat contents were significant.

In this research، The possibility of intelligent management of water qualitiy conditions in Common carp culture was investigated during one month. To perform the study، one intelligent instrument that is constructed by the authors was used in this research. The instrument was equipped with Program Logic Control(PLC) and sensitive sensors for control of three important water parameters including، temperature ،Oxygen and pH. Three above parameters which are crutial for Common carp culture were adjusted on optimum levels ،temperature at (25Co)،Oxygen at (8 mg / li) and pH at(7.3). In each contianer (aquariums) fingerlings 5 to 10gr were released. This instrument could be controll remotely by camera and communication equipments like mobile، telephone and internet. Three other aquariums also were prepared as control group which on them، the above parameters،where countrolled manually. They were checked three times a day during the study.The three mentioned parameters (tempruture ، O2 and pH)in the quiped containers were exmind countiusely and atumatically duiring whole period of expriments. On equipped aquariums during 31 days، 13 speciemen،out of 15 alive til end of the study. They seems to be healthy and shows a good growth،which can be considered as a result of favorate invironmental conditions (temprature،O2، pH) After 31 days period of study، the average weight of treatment fishes were reached form 5-10gr to 250±8gr. But in 3 control group ،parameters meet a great flactution،vz: tempruture(18-29ºC)، Oxygen (5-12)، and pH (5-9)، leading all control group،s speciemens being died til end of days of expriment. Result show،s that this instrument(PLC)،can successfully being used for water management of carp cuture ponds.

To determine level of PCBs in skin and muscle of Cyprinus carpio and Esox lucius fishes  in the west part of Anzali Wetland in Abkenar in autumn (Dec.2010) 4 sampling stations were selected .Samples of water, sediment, suspended particles in water, C. carpio and E. lucius fishes were collected from Abkenar, Anzali Wetland. Nine fish samples were caught from each species. Collected samples of water, sediment, suspended particles and fish were transferred to laboratory. After preparation, extract and clean up of the samples, analyses of PCBs were carried out using Gas Chromatography (GC-ECD) with Ni63 ionization detector. PCB average concentration was 24.36 ng/g(dried weight) in  Esox  lucius skin, 14.36 ng/g in E.  lucius mussel  tissue, 21.82 ng/g C. carpio skin and 20.86 ng/g in C. carpio mussel tissue. Coefficient Variation (CV) of average concentration PCBs in E. lucius skin tissue was higher than other tissues. Based on statistical analysis, there were a significant difference between E.  lucius mussels &  skin tissue & C. carpio mussels &  skin tissue  )p(. There were also significant difference between PCBs concentration in water with PCBs concentration in sediment (pC. carpio tissue and filtered suspended particles in water was seen (p<0.05, r=0.851, r2=76%, n=9) and a very strong positive correlation was found between PCBs concentration in water and filtered suspended particles in water (pE.  lucius skin tissue was 5835.69 µg/g, in E.  lucius mussels  tissue was 3440.58 µg/g, in C. carpio skin tissue was 5232.28 µg/g and in C. carpio mussels tissue was 4997.63 µg/g. The real average (with accuracy of 95%) of PCBs in fish tissues (Max. 0.03653 ppm and Min. 0.01025 ppm) in autumn was less than FDI Standards and Australia Food / NZ MRL standards and more than USEPA standard.

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.

This study was carried out  in the southern Caspian Sea water ( Mazandaran province) Mahmooud Abad town on Cyprinus carpio between Ganuary 2006 to Ganuary 2007. 
The samplings were monthly and speciemens were collected from beach seinecatch in the Mahmooud Abad area. Clocetively . 134 specimen of Cyprinus carpio were obtain. The biometric parameters including:, FL, body weight, aging (using scale), sexuality, gonad weight and maturing stages specimens were determine .Mean of fork length for male and female 39.85±5.45 and 40.59±4.08 respectively and body weight for male and female 961.45±306., 1020.01±320.14 gr recpectively.
Age composition of all speciemens ( male and female ) belong to different age groups: 3 (%9 ), 4 (%22.4 ), 5 (%39.6 ), 6
( %23.9) , 7 (%5.2). We could recognized sexuality in all (134) speciemens . Male provide 48.5 and females 51.5 percent of the catch. The avrage of absolute fecundity was estimated 85245 eggs and the range of relative fecundity was estimated 81747 eggs. in stage of maturation all speciemens  were exmined ( 5 stage method ) but only tree stage ( 3 , 4 , 5 ) were observed.
The GSI determines that the spawning season commences in the April until the end of summer and autumn and winter the higher levels of GSI and developed classes of ovary maturation were
observed in April and May and was reduced which indicate the spawning in this months. The mean Kf for male and for female 1.19±0.12 , 1.29±0.15 respectively.