@article{ author = {Ebrahimi, M. and Taherianfard, M. and Rafiee, M.M.}, title = {Lead contamination in fishes of the Kor River}, abstract ={Lead concentration in muscle, liver, kidney, brain and gonad tissues of two cyprinid fishes, Cyprinus carpio and Copoeta spp., from three sections of the upper, middle and lower parts of the Kor River was evaluated in 2006. Totally 225 specimens were caught for this purpose (75 specimens from each zone). Tissue samples were digested in acid and their lead concentrations were assayed by ICP method. Statistical analysis of data showed significantly (p<0.05) higher concentrations of lead in the mid zone than the two other zones. No significant differences (p>0.05) were seen between sexes and species. The same pattern of contamination was also observed in water and sediment samples from three sampling zones. The maximum amount of lead measured in this study (1.85mg/kg), was, however, less than the maximum allowance in fish tissues by European :union:s.}, Keywords = {Lead, Fish, Contamination, Kor River, Fars Province, Iran}, volume = {7}, Number = {1}, pages = {1-14}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3078-en.html}, eprint = {http://jifro.ir/article-1-3078-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Esmaily, A.H. and Kalbassi, M.R.}, title = {Karyological study on bighead goby (Neogobius kessleri) from southern part of the Caspian Sea}, abstract ={Karyological characteristics of bighead goby (Neogobius kessleri) in the Caspian Sea were studied by examining 30 metaphase chromosome spreads from the kidney tissue of 10 specimens. The chromosome number of this species was found 2n=46 and the arm number as NF=46. The prepared karyotype of this species consisted of 23 pairs acro-telocentric (a-t) chromosomes. The chromosomal formula can be stated as 2n=46 (a-t). Karyological parameters showed that relative length was between 2.34-7.04 and length variation range of chromosomes was between 1.67-5.01 and total length was 71.16µm. It was found that the best chromosomal spread quality were obtained from intraperitonial injection of 40µg/g colchicine for 5 hours, hypotonization of samples in%1 sodium tri-citrate solution in 4ºC and preparation of spreads on cooled slide with flame technique.}, Keywords = {Chromosome, Karyology, Bighead goby, Neogobius kessleri, Caspian Sea, Iran}, volume = {7}, Number = {1}, pages = {15-26}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3079-en.html}, eprint = {http://jifro.ir/article-1-3079-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Karimi, D. and Kuperan, K. and Eslami, F.}, title = {Investigating non-compliance behavior with fisheries regulations in the Persian Gulf}, abstract ={Non-compliance with fishing regulations by Iranian fishermen in three provinces of Khuzestan, Bushehr, and Hormozgan along the Persian Gulf was investigated. Using a questionnaire and a stratified random sample method, a total of 566 fishermen were interviewed. The legitimacy variables (outcome and process) that can explain the observed noncompliance with zoning regulations for the shrimp fishery were examined. A Tobit econometric technique was used to estimate the violation decision by Iranian fishermen in the study area. The model was classified into two types: the basic model and the extended model. The key results indicate that one of the factors influencing fishermen to violate the regulation is the differential in the potential income between shrimp fishing zone and other areas. The results also indicate that the moral judgment variable (MCODE) and exogenous variables of probability of detection and conviction play a key role in the violation decision of fishermen. In general, the extended model using an exogenous determinant of probability of detection and conviction in the Tobit estimation technique gave better results than the enriched model using raw probabilities.  }, Keywords = {Fisheries management, Regulation, Legitimacy, Persian Gulf, Iran}, volume = {7}, Number = {1}, pages = {27-46}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3080-en.html}, eprint = {http://jifro.ir/article-1-3080-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Rafiee, Gh.R. and Saad, Ch.R.}, title = {Roles of natural zeolite (clinoptiolite) as a bed medium on growth and body composition of red tilap (Oreochromis sp.) and lettuce (Lactuca sativa var longifolia) seedlings in a pisciponic system}, abstract ={Natural zeolite was used as a bed medium for plantation of lettuce seedlings and its effects on growth and chemical composition of red tilapia and lettuce were investigated in a pisciponic system. The place of study was the Aquatic Resources Technology Laboratory, Faculty of Agriculture, at the University Putra Malaysia, in 2002. The mean individual weight and biomass of fish in the treatment with zeolite were significantly higher (P<0.05) than the control at the end of experimental period. Use of zeoilte as bed media to plant lettuce seedlings significantly (P<0.05) increased the yield of lettuce. The yield of lettuce in zeolite bed medium and control treatments were 1507±83 and 275±48g, respectively at the end of the experiment. The percentage of protein, fiber and ash in the dry weight of fish were not significantly different (P>0.05) between treatments. The percentage of ash in the dry weight of lettuce in the control was significantly (P<0.05) higher than the zeolite bed medium group. It was concluded that the use of zeolite as bed medium to plant lettuce seedlings could improve culture system performance due to its positive effects in lettuce growth.}, Keywords = {Pisciponic system, Chemical composition, Lettuce, Red tilapia, Bed medium zeolite}, volume = {7}, Number = {1}, pages = {47-58}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3081-en.html}, eprint = {http://jifro.ir/article-1-3081-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Salehi, H.}, title = {Cost factor analysis of Caspian salmon (Salmo trutta caspius Kessleri, 1877) fingerling production and release in Iran}, abstract ={Iran contributes to the stock enhancement of several economically valuable fish species, including the Caspian salmon, S. trutta caspius, by producing and releasing millions of fingerlings into the sea. This work was conducted to determine the production costs of the Caspian salmon fingerlings in the years 2002 and 2003. For this purpose, a questionnaire was prepared and filled in by an expert team using data available in the Kelardasht Caspian Salmon Hatchery and other related departments. Among various expenditures, on average, cost of labor (52%) and cost of feed (16%) had the greatest share. Results showed the average cost of production and release of a single fingerling in Iran was IRRls 6,685, (US$ 0.84) over the 2002-2003. The cost sensitivity of hatcheries production of the Caspian salmon shows that labor cost is the most sensitive, and a 50% increase in the cost of this item increases the total coast by more than 25% followed by feed cost.  }, Keywords = {Economic analysis, Caspian salmon, Costs, Stock enhancement, Iran}, volume = {7}, Number = {1}, pages = {59-72}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3082-en.html}, eprint = {http://jifro.ir/article-1-3082-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {SayyadBourani, M. and Abdolmalaki, S. and Khanipour, A.A. and Fazli, H. and Khedmati, K.}, title = {Catch composition and fishing trend of kilka in Iranian part of the Caspian Sea}, abstract ={Population structure of three kilka fishes (Clupeonella spp.), particularly anchovy kilka (C. engrauliformis), in Iranian waters of the Caspian Sea was surveyed in 2003. A total of 3230 biweekly samples were collected from commercially landed kilka at 3 stations in Mazandaran and Guilan provinces. Catch and effort statistics were obtained from the relevant organization. Results showed a great decline in the commercial kilka catch from 95000 tons in 1999 to 15497 tons in 2003. The contribution of anchovy kilka to the total kilka fishery also showed a decline from 71% in 1999 to 52.5% in 2003, while common kilka (C. cultriventris) increased from 13.7% in 1999 to 48.9% in 2003. Fork length range of anchovy kilka showed an increase from 89.2±12mm in 1999 to 100.4±4.9mm in 2003. The age composition of anchovy ranged between 1+ to 7+ years and the dominant group was 5+ years old (age group of 4+ and 5+ comprised 84.6% of population). The K value and L∞ calculated 0.598/year and 110.13 mm respectively. Natural, fishing and total mortality coefficient was estimated 0.69, 0.31 and 1 per year respectively. The results showed a sex ratio of F: M= 68.2: 31.8.  }, Keywords = {Clupeonella engrauliformis, Catch, Growth coefficient, Age, Length, Caspian Sea, Iran}, volume = {7}, Number = {1}, pages = {73-86}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3083-en.html}, eprint = {http://jifro.ir/article-1-3083-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Soltani, M. and Khazraeenia, S. and Sepehri, H.}, title = {Some effects of experimental acidification on phenoloxidase, trypsin and lysozyme activities in freshwater crayfish (Pontastacus leptodactylus)}, abstract ={Levels of phenoloxidase (Po), trypsin and lysozyme activities were determined following 48 hours exposing freshwater crayfish (Pontastacus leptodactylus) weighing 59.8±3.4g to different low pH values of 6.5, 5.5, 4 and 2.5 at 20-23˚C. Significant decrease were found (p<0.01) in levels of Po and trypsin activities in crayfish haemocyte lysate supernatant (HLS) at pHs 5.5 and 4 compared to the control group (pH 8). Also, plasma lysozyme activity showed a significant increase in water with pHs of 6.5, 5.5 and 4 (p<0.01). Furthermore, measurement of calcium and magnesium concentrations in sera samples showed a significant decrease for calcium ion at pHs 5.5 and 4, while magnesium concentration was significantly decreased only at pH 4 compared to control group (p<0.05). Crayfish exposed to pH 2.5 died within 24 hours post-exposure.}, Keywords = {Crayfish, Pontastacus leptodactylus, phenoloxidase, trypsin, lysozyme,serum calcium and magnesium}, volume = {7}, Number = {1}, pages = {87-102}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3084-en.html}, eprint = {http://jifro.ir/article-1-3084-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Yasemi, M. and Keyvan, A. and Falahatkar, B. and Farzingohar, M. and Sharifpour, I. and Owfi, F. and Vossoughi, G.H.}, title = {Pleuronectiformes species identification along the Iranian coastline of the Persian Gulf}, abstract ={Pleuronectiforme fishes of the Persian Gulf coastlines along Khuzestan, Bushehr and Hormozgan provinces were morphometrically and meristically studied from April 2003 to September 2005, in order to identify species. In this experiment, 1551 fish samples were caught by trawl or collected from fish markets. The sampling was carried out in 27 regions seasonally. Thirty six traits and parameters including 18 morphometric, 11 meristic, and 7 phenotype characters were determined. Data obtained from morphometric parameters were analyzed and dendrograms were designed using cluster method. Comparision of the biometric data with the checklist identification index of species show that there are 6 main and dominant families including: Bothidae, Psettodidae, Citharidae, Soleidae, Cynoglossidae and Paralichthyidae in the area. In addition, the identification of above- mentioned families indicated that 25 species in Khuzestan area, 19 species in Bushehr area and 16 species in Hormozgan area inhabit the coastal waters of the Persian Gulf. Meanwhile, 13 species from 5 families in Persian Gulf that have not been reported so far are identified and reported in this research. According to these results and comparing with other studies, 30 species from 6 families were identified in coastal waters in the Persian Gulf on Khuzestan, Bushehr and Hormozgan areas which is the most complete study in Persian Gulf.}, Keywords = {Species identification, Pleuronectiformes, Persian Gulf, Iran}, volume = {7}, Number = {1}, pages = {103-120}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3085-en.html}, eprint = {http://jifro.ir/article-1-3085-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Yousefian, M.}, title = {Genetic parameters of growth in rainbow trout, Oncorhynchus mykiss, at early rearing stage}, abstract ={The heritability response for growth of rainbow trout during early developmental stages was detected on the basis of full-sib and half-sib cross between the selected lines. The experiment was done in Shahid Bahonar Salmon Propagation Center, Kelardasht, Iran. Breeders were taken from the stocks maintained in this station. A bifactorial cross was done between two line using four randomly sire and four randomly chosen dams form each line Analysis of variance revealed a significant difference at 300 days of age between half and full-sib (p<0.026). The effective difference in weight between half/full-sibs of juveniles was not statistically significant on 150 days (p>0.817) and 225 days (p>0.081). No significant difference between mean body weight of male and female half-sib group was found (p>0.05); neither were there significant differences between sireline (p<0.324) and dam line (p<0.230) at age of 300 days. The heritability ranged from 0.093 to 0.223 in sire and 0.11 to 0.329 in dam groups. The average heritability in sire regardless of age was 0.16 and in dams 0.21. The heritability in total regardless of age and sex was estimated about 0.185. Genetic parameters (h2) were different between dams (0.15-0.27) and sires (0.13-0.19) for all ages of samplings and for age of 150 day old, was significant (p<0.035).  }, Keywords = {Rainbow trout, Heritability, Full-sib, Half-sib}, volume = {7}, Number = {1}, pages = {121-136}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3086-en.html}, eprint = {http://jifro.ir/article-1-3086-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {DehghanMadiseh, S. and Savari, A. and Parham, H. and Marammazy, J.C. and Papahn, F. and Sabzalizadeh, S.}, title = {Heavy metals contaminant evaluation in sediments of Khour-e-Musa creeks, northwest of Persian Gulf}, abstract ={Surface sediments contamination to heavy metals was evaluated in eight creeks of Mahshahr coastal waters (north-west of the Persian Gulf) from October. 2005 to November 2006. Sediments were collected seasonally by Peterson grab and the concentrations of heavy metals were measured using voltammetry and polarography methods. The range and the mean concentrations obtained in mg/kg were 15.03-35.16 (27.01) for Cu, 65.57-171.41 (102.67) for Ni, 4.63-20.06 (13.22) for Co, 0.093-0.78 (0.22) for Hg, 65.07-379 (113.70) for Zn, 0.27-1.00 (0.56) for Cd and 7.09-29.72 (14.66) for Pb. The background values for different heavy metals were calculated and the contamination factor for each metal and the degree of contamination for each creek we.re determined as well. M. easured concentrations were compared with international standards. According to the contamination factor (Cf), the concentration of some elements such as Hg, Zn, and Ni were at risk level; according to the degree of contamination (Cd), all of the studied creeks could be classifieds moderately polluted except for Ghannam that showed a considerable degree of contamination.}, Keywords = {Heavy metals, Bottom sediment, Contamination factor, Khour-e-Musa creeks, Khouzestan}, volume = {7}, Number = {2}, pages = {137-156}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3087-en.html}, eprint = {http://jifro.ir/article-1-3087-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Mohseni, M. and Seyfabadi, J. and Pourali, H. and Pourkazemi, M. and Bahmani, M.}, title = {Effects of supplemental dietary L-carnitine on growth and body composition of beluga (Huso huso) Juveniles}, abstract ={The effect of feed supplemented with L-camitine at four levels of 0, 300, 600 and 900mg kg-1 on growth performance and body composition of beluga, H. huso, juveniles was evaluate din two separate trials. In the first trial, 180 juveniles (525±9gw) were fed with the test diet for a period of 71 days, and the trial extended to another 126 days in the second phase by randomly selecting 120 juveniles (870.7±32g) and rearing them with similar diets. All trials, in triplicates, were conducted in circular fiberglass tanks (200cm diameter, 40cm height).The fish were fed 4 times daily to apparent satiation. In the first phase, L-carnitine did not significantly affect mean final weight, feed conversion ratio (FCR) or specific growth rate (SGR) of the fish, however, the fish receiving 900mg kg-1 L-carnation showed better growth increment, SGR and feed efficiency (FE) than those in control group (p³0.05); neither did it significantly affect protein, lipid, moisture or ash as well as leptosomatic index (HSI) (p³0.05). The protein efficiency ratio (PER) was significantly affected by L-carnitine supplemented diet, particularly at 900mg kg-1(p£0.05). In the second phase, fish fed L-carnitine-supplemented diets produced significantly higher W2, SGR and PER than the control group (p£0.05), but HSI decreased significantly (P£0.05).At the end of the trial, the whole body composition of fish did not differ significantly among experimental treatments, but slightly reduced lipid content were observed at 600 and 900mg kg-1 L-carnitine (p£0.05).The results of this study indicated that supplementation of diets with 300-600mg carnitine kg-1 improved growth rate, feed utilization and stimulated protein-sparing effect in this species.}, Keywords = {L-carnitine, Growth rate, Body composition, Beluga, Huso huso}, volume = {7}, Number = {2}, pages = {157-170}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3088-en.html}, eprint = {http://jifro.ir/article-1-3088-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {NafisiBahabadi, M. and Soltani, M.}, title = {Effect dietary energy levels and feeding rates on growth and body composition of fingerling rainbow trout (Oncorhynchus mykiss)}, abstract ={Growth, feed conversion ratio and fillet composition of rainbow trout (initial weight of 9.99±0.109)were investigated in a 6x2 factorial design experiment employing two levels of digestible energy (DE) (2900 and 3500kcal.kg-1) and six feeding rates (1.0%, 2.0%, 3.0%, 4.0%,5.0% of the body weight,(BW) day-1 and to satiation) for 60 days. Specific growth rate (SGR) was highest at 5.0% ration in both levels of digestible energy and decreased in the satiation ration. Regardless of feeding rate, rainbow trout grew more by 35% in DE 3500 kcal kg-1, There was a significant (p<0.05) interactive effect of feeding rates and DE on weight gain and feed conversion ratio (FCR). The highest FCR was found in fish fed to satiation (19- 21%), while the lowest FCRs, were found in 4%, 3% rations in DE levels of 2900 and 3500 kcal kg-1, respectively. There was a significant increase in protein and fat levels and decrease in moisture content of fish fillet (p<0.05) as feeding rate and DE increased (p<0.05). Condition factor increased when feeding rate and DE increased (14-15%). Feeding rate and DE level proved to be the main differentiating factors in growth, FCR and fillet composition parameters. Values of SGR and FCR plotted against feeding rates allowed the optimum and maximum feeding levels to be determined, which were found to be at 4% and 3%kcal day-1 in DE levels of 2900 and 3500kcal kg-1, respectively, for the rainbow trout of 109average weight. }, Keywords = {Rainbow trout, Nutrition, Feeding rate, Feed energy}, volume = {7}, Number = {2}, pages = {171-186}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3089-en.html}, eprint = {http://jifro.ir/article-1-3089-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Niamaimandi, N. and Arshad, A.B. and Daud, S.K. and Saed, R.C. and Kiabi, B.}, title = {Growth parameters and maximum age of prawn, Penaeus semisulcatus (De Haan) in Bushehr waters, Persian Gulf}, abstract ={Carapace length frequency data of green tiger prawn, Penaeus semisulcatus, were monthly collected from 50 stations along the coastal waters of Bushehr, Persian Gulf, during January 2003 to March2004. FiSAT program was used to analysea total of 535 shrimp’s including292 females and 243 males, for the relationships of total length, weight and carapace length. The L¥ and K for males were estimated at 38mm CL and 1.6 year-1 and for the females were 50.40mmCL and 2.20 year-1, respectively. Maximum age (Tmax) was 20 months for the males and 15 months for the females. The growth of the shrimp was found to be rapid during summer and autumn and negligible during winter and spring.}, Keywords = {Growth parameters, Green tiger prawn, Penaeus semisulcatus, Bushehr waters, Persian Gulf}, volume = {7}, Number = {2}, pages = {187-204}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3093-en.html}, eprint = {http://jifro.ir/article-1-3093-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Noverian, H.A. and Shabanipour, N. and Khoushkholgh, M.R. and Hosseini, M.R.}, title = {Effect of dietary digestible energy level on growth indices of kutum (Rutilus frisii kutum Kamenskii, 1901)}, abstract ={A 60-days feeding trail was conducted to evaluate the effects of dietary digestible energy levels (DE) on kutum, Rutilus frisii kutum. Four is nitrogenous (35% protein) diets with digestible energy levels of 2500, 2600, 2700 and 2800kcal kg-1 was tested. Two hundred and forty advanced fry (2±0.4g) were randomly distributed in 12 fiberglass tanks of 400L capacity. Nutritional responses in terms of WG, FCR and PER as well as survival rate (SR) significantly improved (p<0.05) with increase in DE level from 2500 to 2800 kcal kg-1 diet, but no difference between 2600 and 2700kcal kg-1 diet was found. Body crude protein and fat significant were increased (p<0.05) when the dietary energy was raised up from 2500 to 2600kcal DE kg-1 diet, but a further increase on energy did not improve the fish crude protein and fat content.}, Keywords = {Rutilus frisii kutum, Nutritional evaluation, Digestible energy, Growth performance}, volume = {7}, Number = {2}, pages = {205-214}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3094-en.html}, eprint = {http://jifro.ir/article-1-3094-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {}, title = {Inhibitory effect of citric acid on rancidity of frozen catfish (Silurus glanis)fillets}, abstract ={The effect of aqueous solution of citric acid (CA) on the lipid stability of the European catfish (Silurus glanis) fillets during frozen storage (up to 6 months) was investigated. Rancidity development was measured by several biochemical indices (free fatty acids, peroxides and TBA) and complemented by the measurement of expressible moisture and sensory evaluation (flesh odor, consistency and flesh appearance). The CA treatment led to some lower free fatty acids (6.43% oleic acid in total lipid at month 6), peroxides (7.98meq oxygen/kg lipids, at month 6) and secondary compounds formation (2.16mg malondialdehyde/kg fish sample). Lower peroxide, thiobarbituric acid-reactive substance (TBA), free fatty acids (during 0,3 and 6 months frozen storage), and expressible moisture (month 6) values were obtained from CA-treated fish fillets than the untreated (blank control) ones (p<0.05).}, Keywords = {Catfish, Lipid oxidation, Citric acid, Shelf life}, volume = {7}, Number = {2}, pages = {215-228}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3095-en.html}, eprint = {http://jifro.ir/article-1-3095-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Safari, R. and Pourkazemi, M. and RezvaniGilkolaei, S. and Shabani, A. and BagherianYazdi, A.}, title = {Genetic relationships of Iranian coastline ship sturgeon (Acipenser nudiventris) samples and Ural population based on microsatellite DNA}, abstract ={}, Keywords = {}, volume = {7}, Number = {2}, pages = {229-240}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3096-en.html}, eprint = {http://jifro.ir/article-1-3096-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {Sajjadi, M. and Carter, C.G.}, title = {Effect of feeding rate on nutrient digestibility in Atlantic salmon, Salmo salar L.}, abstract ={A digestibility trial was conducted to examine the effect of feeding rate on dry matter, gross energy, crude protein and phosphorus digestibility in Atlantic salmon (Salmo salar). Duplicate groups of fish were fed 0.25, 0.5, 0.75, 1.0, 1.25 and 1.9% BW/day. The faeces were collected by Guelph-type collectors for five successive days. Dry matter, protein and phosphorus digestibility’s were all significantly (p<0.05) affected by feeding rate. Dry matter digestibility was significantly lower in fish fed 0.25% BW day in comparison with fish fed 0.5, 0.75 and 1% BW day. Protein digestibility was significantly lower in fish fed 0.25% BW/day in comparison with 1.25% BW day. Phosphorus digestibility was significantly lower in fish fed 0.25% BW/day in comparison with all other treatments except for 1%BW day. There were no significant differences for energy digestibility between fish fed with different amount of feed. The main effect was reduced digestibility at the lowest level of intake with no obvious relationship between feeding rate and digestibility above this amount. This was explained by a relatively higher loss of endogenous faecal nitrogen and phosphorus at sub-maintenance feeding. }, Keywords = {Atlantic salmon, Phosphorus digestibility, Feeding rate, Apparent digestibility}, volume = {7}, Number = {2}, pages = {241-256}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3097-en.html}, eprint = {http://jifro.ir/article-1-3097-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {TaghaviMotlagh, S.A. and Seyfabadi, S.J. and GhodratiShojaei, M. and Abtahi, B. and TaheriMirghaed, A.}, title = {Population dynamics of the Spanish mackerel (Scomberomorus commerson) in coastal waters of Oman Sea}, abstract ={Length composition data of narrow-barred Spanish mackerel, Scomberomorus commerson (Lacepede 1800), landed between April 2002 to March 2004, were monthly used to estimate the growth, mortality and exploitation parameters of the stock. Maximum fork length and weight were 170 cm and 38 kg, respectively. Nonlinear least square fitting provided a complete set of von Bertalanffy growth estimates: L¥=178 cm (FL); K=0.28 and to= -0.36 years. The estimated value of total mortality based on length converted catch curve using these growth parameters is Z=0.95 year-I. Natural mortality based on growth parameters and mean environmental temperature (T=26.5°C) is M=0.36 year-1. Furthermore, the annual instantaneous fishing mortality rate of 0.59 year-I was by far in excess of the precautionary target (Fopt=0.18 year-1) and limit (Flimit=0.24 year-1) biological reference points, indicating that the resource is heavily over-exploited and the management of this species should be implanted rapidly if they are to remain sustainable.}, Keywords = {Scomberomorus commerson, Population dynamics, Oman Sea, Iran}, volume = {7}, Number = {2}, pages = {257-270}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3098-en.html}, eprint = {http://jifro.ir/article-1-3098-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2008} } @article{ author = {AbedianKennari, A.M. and Oveisipour, M.R. and Nazari, R.M.}, title = {Effects of n3-HUFA enriched Daphnia magna on growth, survival, stress resistance, and fatty acid composition of larvae of Persian sturgeon (Acipenser persicus)}, abstract ={Effects of Daphnia magna enriched with cod liver oil (CLO) as a source of highly unsaturated fatty acid (HUFA) on growth, survival, stress resistance, and fatty acid composition of the Persian sturgeon larvae were evaluated. Daphnia enriched for three different time periods (3, 6, and 9 hours) and non-enriched Daphnia were fed to the Persian sturgeon larvae (average weight 61.6±0.4mg) during 14 days. The highest n3-HUFA content was found in Daphnia enriched for 9 hours (0.69mg g-1 DW) and the highest n3-HUFA content of the larvae was also found in those larvae fed with Daphnia enriched for 9 hours (2.39mg/g-1DW). A significant growth difference between larvae fed with enriched and non-enriched Daphnia was observed (p<0.05), while survival rate did not significantly differ among the treatments (p>0.05). Furthermore, the highest pH stress resistance was found in those larvae fed with Daphnia enriched for 9 and 6 hours (p<0.05). A salinity stress test did not show significant differences among the treatments.}, Keywords = {Live food, Daphnia, Persian sturgeon, Enrichment, n3-HUFA, Growth performance, Fatty acids composition}, volume = {7}, Number = {1}, pages = {1-14}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3125-en.html}, eprint = {http://jifro.ir/article-1-3125-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {Afsharnasab, M. and Dashtyannasab, A. and Yeganeh, V. and Soltani, M.}, title = {Incidence of white spot disease (WSD) in Penaeus indicus farms in Bushehr Province, Iran}, abstract ={The incidence of white spot disease in farmed Penaeus indicus in Busheher region was evaluated by analyzing 200 shrimp individuals between June and September, 2005. The samples were examined for clinical sign including observation of white spots on the cuticle and tissue. Samples were processed using polymerase chain reaction (Nested-PCR) test. The results showed that 24% of the samples examined were clinically positive having white spots on their cuticles. Also, 92% of the samples examined were positive in PCR examination. Furthermore, 70% of apparently healthy shrimp were positively identified using the by PCR test.}, Keywords = {Incidence, White spot disease, Penaeus indicus, Nested PCR, Clinical sign, Iran}, volume = {7}, Number = {1}, pages = {15-26}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3109-en.html}, eprint = {http://jifro.ir/article-1-3109-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {Farahmand, H. and AbdulRazak, S.H. and Hwang, G.L. and Maclean, N. and Rahman, M.A and Maclean, N.}, title = {Induction of tetraploidy in transgenic tilapia (Oreochromis niloticus) using physical shocks}, abstract ={The induction of tetraploidy by means of cold, heat and multiple heat shock treatments was investigated on male fish from a growth-enhanced transgenic tilapia C118 line, crossed with wild type females. After the development a new multiple heat shock protocol (two heat treatments at 41oC in 60 and 80 min. after fertilization for 5 min. per each), chromosome and X-gal in situ staining assays demonstrated the successful production of yolk sac tetraploid transgenic tilapia in two out of 15 embryos examined in this trial via direct correlation between higher level of b-galactosidase expression and karyotyping in the samples verifying complete tetraploidy in this line. In the grown fish, there was evidence to suggest mosaicism or perhaps tetraploidy in at least two grown fish using the measurement of erythrocytes and karyotyping of the G1 offspring (p<0.05). There was, however, no evidence to indicate successful production of triploid G1 individuals following crossing of induced fish with wild type.}, Keywords = {Transgenic tilapia, Oreochromis niloticus, -galactosidase, Tetraploidy, LacZ reporter gene, Sterility}, volume = {7}, Number = {1}, pages = {27-46}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3110-en.html}, eprint = {http://jifro.ir/article-1-3110-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {Fazli, H. and Zhang, C.I. and Hay, D.E. and Lee, C.W. and Janbaz, A.A. and Bourani, M.S.}, title = {Poulations dynamics and stock assessment of common kilka (Clupeonella cultriventris caspia ) in Iranian waters of the Caspian Sea}, abstract ={This paper examines the changes in the population biology and biomass of common kilka (Clupeonella cultriventris caspia) in the Iranian waters of the Caspian Sea from 1995-2004. For most years during this 10-year period, we estimated the age structure of the catch, length-weight relationship, von Bertalanffy growth parameters, condition factor, sex ratios, maturity stages determined from ovarian analysis, natural and fishing mortality, age at first capture and biomass. Growth parameters were estimated as L¥=132mm, K=0.259/yr, t0=-1.285/yr. The instantaneous coefficient of natural mortality was estimated at 0.506/yr and the instantaneous coefficient of fishing mortality varied during the 10-year period between 0.125/yr to 1.487/yr. Biomass of the common kilka increased from about 16,000mt in 1995 to more than 41,000mt in year of 2002. This increase in common kilka was simultaneous with a sharp decline in anchovy kilka, changes in zooplankton abundance and composition, and especially increase in zooplankton species used by common kilka. We concluded that at the present time, the stock of common kilka is being over-fished.}, Keywords = {Clupeonella cultriventris caspia, Growth, Maturity stages, Stock assessment, Caspian Sea}, volume = {7}, Number = {1}, pages = {47-70}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3111-en.html}, eprint = {http://jifro.ir/article-1-3111-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {Khodabandeh, S. and Golzari, A.}, title = {Branchial chamber structure and osmoregulatory function in the prawn, Palaemon elegans (Crustacea: Decapoda) from the Caspian Sea}, abstract ={The structure, ultrastructure and osmoregulatory function of the branchial chamber were investigated in Palaemon elegans (Rathke, 1837) by light microscope, electron microscope and immunohistochemistry methods, respectively. Each chamber possesses a branchiostegite, 3 epipodites and 8 phyllobranchiate gills. The lamellae are attached along the two outer surfaces of the triangular gill axis. Ultrastructurally, numerous ionocytes are present along the innerside of the branchiostegites and in the epipodites. A consistently high immunofluorescence of Na+, K+-ATPase was observed along the basolateral sides of these ionocytes. The gill lamellae are formed by a single axial epithelium made of H-shaped cells with thin lateral expansions and a basal lamina limiting hemolymph lacunae. A positive but weak fluorescence of the Na+, K+-ATPase was found in lacunae sides of the lamellae cells. These findings show that in P. elegans, the epipodites and the branchiostegites organs appear as the main site of osmoregulation and the gill lamellae are mainly devoted to respiration.}, Keywords = {Palaemon elegans, Gill, osmoregulation, Immunolocalization, Na+, K+-ATPase}, volume = {7}, Number = {1}, pages = {71-88}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3112-en.html}, eprint = {http://jifro.ir/article-1-3112-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {Masoumian, M. and Barzegar, M. and Mehdipoor, M. and Asadollah, S. and Jalali, B.}, title = {Myxobolus spp. (Myxosporea: Myxobolidea) from fishes of the Zayandeh-Rud River (Esfahan, Iran); new hosts and locality record}, abstract ={In a parasitic survey of the native and introduced fishes in the Zayandehrud River, 5 Myxobolus spp. were found in the gills, fins and skin of examined fish specimens. They include M. varicorhini from fin and M. samgoricus from skin of Capoeta damascina, M. musajevi from gills of Capoeta capoeta gracilis, Myxobolus cristatus from Capoeta aculeata, and M. saidovi from Alburnus sp. Data on the location in the hosts comparing with previous records are provided. The epidemiological importance of Myxobolus spp. in Zayandeh-rud River is also presented. In the present paper the occurrence of five Myxobolus spp. all from endemic fishes from Zayandeh-rud River (A new locality) are recorded from two new hosts; Capoeta damascina, Capoeta aculeata. M. varicorhini and M. saidovi are recorded for the first time from Iranian freshwater fishes.}, Keywords = {Myxobolus spp., Zayandeh-rud River, Esfahan Province, Iran}, volume = {7}, Number = {1}, pages = {89-100}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3113-en.html}, eprint = {http://jifro.ir/article-1-3113-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {MehdizadehFanid, L. and Seidgar, M. and AzariTakami, G.}, title = {A Comparative SEM morphological study on the egg shell in some Anostracans (Crustacea: Branchiopoda) from East Azerbaijan Province of Iran}, abstract ={Abstract:  The surface morphology of resting eggs of Anostracan species from East Azerbaijan Province of Iran and that of Artemia urmiana was compared using Scanning Electron Microscopy (SEM). Anostracan fauna of East Azerbaijan temporary pools were determined as follows: Chirocephalus skorikowi (Chirocephalidae), Branchinecta orientalis (Branchinectidae), Streptocephalus torvicornis (Streptocephalidae), Branchinella spinosa (Thamnocephalidae) and Artemia urmiana (Artemiidae). However other species may also exist in these pools. Therefore, evaluating the morphology of these cysts by SEM appeared to accentuate that study of cyst ornamentation is a valuable taxonomical factor and more importantly that it can be used to identify the species even when the adults are not present at the time of sampling or in the absence of water.}, Keywords = {Egg morphology, SEM, Anostraca (Fairy Shrimps), East Azerbaijan, Iran}, volume = {7}, Number = {1}, pages = {101-110}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3114-en.html}, eprint = {http://jifro.ir/article-1-3114-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {SaraviMoghanloo, M. and Niksirat, H. and MojaziAmiri, B. and Mirtorabi, S.M.}, title = {The effects of extender type, freezing and thawing rates on fertility of the cryopreserved semen of the Caspian brown trout (Salmo trutta caspius )}, abstract ={Cryopreservation of semen from the Caspian brown trout (Salmo trutta caspius) and effects of extender type, freezing and thawing rates on fertilization ability were studied. After assessment of semen quality, one part of semen was diluted with three parts of different extender and decanted into 0.5ml straws. Freezing was carried out at two freezing levels, 1.5cm and 2cm above surface of liquid nitrogen. The semen was thawed at 5°C for 90s, 15°C for 45s or 25°C for 30s in water baths and used for fertilization. Using the extender: 0.3 M glucose+10% methanol+10% egg yolk, and 0.6 M sucrose 10% DMSO + 10% egg yolk, yielded the highest post-thaw fertilization rates, with 67.05%±8.76 and 59.78%±5.08 eyeing rates, respectively. No significant differences were found in the fertilization rates with two freezing levels (P>0.05), however eyeing and hatching rates were higher for 2cm above the surface of the liquid nitrogen than for 1.5cm. Thawing of cryopreserved semen was best using the 25°C water bath for 30s and significant differences were seen in the eyeing rates between 25°C and 5°C or 15°C (P<0.05). Significant interactions (P<0.05) were found between effects of extender type and thawing rates and extender type and freezing rates.}, Keywords = {Cryopreservation, Extender, Freezing, Thawing, Fertility, Salmo trutta caspius}, volume = {7}, Number = {1}, pages = {111-128}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3115-en.html}, eprint = {http://jifro.ir/article-1-3115-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} } @article{ author = {Soltani, M. and Alishahi, M. and Mirzargar, S. and Nikbakht, Gh.}, title = {Vaccination of rainbow trout against Streptococcus iniae infection: comparison of different routes of administration and different vaccines}, abstract ={Antibody production and clinical efficacy (relative percent survival RPS) were measured in 40±5g rainbow trout after immunization with two types of Streptococcus iniae vaccines consisting of formalin killed cells (FKC) and FKC enriched with the bacterial extracellular products (ECP) administered by intraperitoneal (i.p), immersion and oral routes at 16±1°C for 18 weeks. No significant difference was found in antibody levels among the fish i.p immunized with FKC enriched with ECP plus Freunds' adjuvant (FA), FKC plus FA and FKC vaccines (P>0.05), whilst the antibody production was significantly higher in these three groups than fish immunized by immersion and oral routes of FKC and FKC enriched ECP (P<0.05). Also, fish immunized by immersion route with FKC showed significantly higher antibody titer than fish orally vaccinated with FKC with or without ECP until 12 weeks post-immunization (P<0.05). No significant difference was found in antibody titer between orally vaccinated fish and control groups (P>0.05). The RPSs ranging 82.6-100, 73.9-95 and 73.9-91.7% were obtained in the fish intraperitoneally immunized with FKC enriched ECP plus FA, FKC plus FA and FKC vaccines, respectively, compared to 0% survival for the control fish. Also, RPS in fish vaccinated by the immersion route was in the range 45.8-30.4% after 18 weeks post-vaccination. Efficacy of oral vaccination of fish with FKC plus ECP was in range of 8.7-29% and that of fish orally vaccinated with FKC resulted in 8.7-20.8% protection.}, Keywords = {Vaccine, Streptococcus iniae, Streptococcosis, Rainbow trout}, volume = {7}, Number = {1}, pages = {129-140}, publisher = {Iranian Fisheries Research Organization}, url = {http://jifro.ir/article-1-3116-en.html}, eprint = {http://jifro.ir/article-1-3116-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2007} }