@article{ author = {Agh, N. and Noori, F. and Makhdom, N. M.}, title = {First feeding strategy for hatchery produced Beluga sturgeon, Huso huso larvae}, abstract ={ Co-feeding of fish larvae with live food and formulated diet has been at the focus of fish nutritionists since last decade. In this study we tried to refine the feeding practices of great beluga sturgeon (Huso huso) larvae using different combinations of newly hatched Artemia urmiana nauplii and trout starter diet. Three replicate groups (250 fish/replicate) of first-feeding Huso huso larvae were fed on the basis of four main feeding regimens: (1) live food (live nauplii of brine shrimp Artemia urmiana) (2) indirect transition (5 days live food followed by gradual transition to formulated diet) (3) direct transition (using different combinations of live and formulated diet from start feeding) (4) formulated feed (FD). It was found that combining live food and manufactured diets (co-feeding) from first feeding stage (direct transition) significantly improves the weight gain in H. huso larvae followed by indirect transition, live food and FD. But survival was significantly higher in larvae fed on pure live food and direct transition regimens compared to indirect transition and FD. It was concluded that co-feeding of H. huso could be started immediately from commencement of exogenous feeding. }, Keywords = {Huso huso, Artemia nauplii, Formulated diet, Co-feeding, Growth, Survival}, volume = {11}, Number = {4}, pages = {713-723}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-732-en.html}, eprint = {http://jifro.ir/article-1-732-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Ayas, Deniz}, title = {Seasonal Variations of Fat and Fatty Acid Composition in Muscle Tissues of Mediterranean Octopuses}, abstract ={ The effects of seasons on lipid and fatty acid profiles of muscle types (mantle and arm) of Mediterranean octopuses (common octopus-Octopus vulgaris and musky octopus-Eledone moschata) were investigated. The results showed that lipid levels ranged from 0.75% to 1.60% in both muscle types of octopuses which were considered as lean. Lipid levels in mantle tissues of both octopus species were higher than lipid levels in their arms. Although these two octopus species contain small amounts of lipid, they are good sources of n-3 PUFAs content (especially EPA and DHA) for all season regardless of muscle types. The highest levels of EPA were obtained from mantle and arms tissues (18.23%) of common octopus in spring. The highest levels of EPA were obtained from mantle (12.90%) and arms (12.67%) of musky octopus in autumn and winter. The levels of EPA in both of muscle tissues of common octopus were found to be higher than levels of EPA in both of muscle tissues of musky octopus. The highest DHA levels were obtained from mantle tissue (28.17%) of common octopus in summer. There were significant differences (p<0.05) in the levels of SFA, MUFA and PUFA in terms of species, season, and muscle types.    }, Keywords = {Common octopus, Musky octopus, Season, Fatty acids, Lipid }, volume = {11}, Number = {4}, pages = {724-731}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-733-en.html}, eprint = {http://jifro.ir/article-1-733-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Bagheri, S. and Niermann, U. and Sabkara, J. and Mirzajani, A. and Babaei, H.}, title = {State of Mnemiopsis leidyi (Ctenophora: Lobata) and mesozooplankton in Iranian waters of the Caspian Sea during 2008 in comparison with previous surveys}, abstract ={ Mnemiopsis leidyi which was accidentally introduced into the Caspian Sea in 1999 and since then has colonized extensively. The horizontal distribution of M. leidyi and dominant mesozooplankton species was investigated in the south western Caspian Sea during February, May, July and November 2008. The average number and biomass of M. leidyi were in the same range (ca 200 individuals.m-3 (2000 ind.m-2) and 16 g wet weight.m-3 (180 g.m-2) in comparison with previous surveys. As in previous years the population consisted mainly of individuals <1 cm. The decline in mesozooplankton species observed since 1996 continued in 2008. Only two species of the previously recorded 24 Cladocera species were found in 2008. Of five Copepoda species recorded in 1996, only one, Acartia tonsa, was found in 2008 and even here adult individuals have reduced 3-fold since 1996. Bivalve larvae have declined by one order of magnitude since 1996. Among the dominant species, only the numbers of Cirripedia larvae and in part the numbers of Pleopis polyphemoides (Cladocera) were in the same range as in 1996. }, Keywords = {Mnemiopsis leidyi, Acartia tonsa, Mesozooplankton, Long-term fluctuation, Caspian Sea}, volume = {11}, Number = {4}, pages = {732-754}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-734-en.html}, eprint = {http://jifro.ir/article-1-734-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Bozkurt, Y. and Öğretmen, F.}, title = {Sperm quality, egg size, fecundity and their relationships with fertilization rate of grass carp (Ctenopharyngodon idella)}, abstract ={ Gametes were collected by abdominal massage from 15 anesthesized male and female grass carp. In collected sperm samples the following mean spermatological properties were determined: sperm volume 15.64 ± 5.39 mL, sperm motility 81.20 ± 7.61%, motility duration 62.06 ± 19.40s, density 17.88±5.48 x109 mL-1, total density 428.90±302.05 x109, and pH 7.25±0.81. Also egg size (mm) and fecundity (egg/fish) were determined as 1.04±0.028 and 417867 ± 36.274 respectively in female grass carp. The fertilization capacity of sperm was tested with the same egg pool. The insemination dosage was 2x105 spz/egg for each fertilization experiment. Fertilization rate was determined as mean 79.3±2.95% and positively correlated with sperm motility (r=0.932, p<0.01), egg size (r=0.513, p>0.05) and fecundity (r=0.539, p>0.05).  }, Keywords = {Grass carp, Sperm, Motility, Fertilization }, volume = {11}, Number = {4}, pages = {755-764}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-735-en.html}, eprint = {http://jifro.ir/article-1-735-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Dashtiannasab, A. and Kakoolaki, S. and SharifRohani, M. and Yeganeh, V.}, title = {In vitro effects of Sargassum latifolium (Agardeh, 1948) against selected bacterial pathogens of shrimp}, abstract ={ During the last decade, shrimp aquaculture has developed rapidly in many developing countries. Antibiotic resistance is a major problem in shrimp aquaculture. Seaweeds are considered as potent source of bioactive compounds that are able to produce biological activities. The aim of this study was to evaluate the antibacterial activity of ethanolic and chloroformic crude extracts of the brown algae, Sargassum latifolium derived from Persian Gulf waters. The extractions against shrimp selective pathogen bacteria including Vibrio alginolyticus, V. parahaemolyticus and V. harveyi were used by disk diffusion agar method. Results revealed that all mentioned bacteria were sensitive to both ethanolic and chloroformic crude extracts of S.latifolium. The minimum inhibitory concentration of chloroformic extract of S. latifolium against the bacteria was performed by tube dilution technique. MICs were 5, 10 and 10 mg ml-1 for V. alginolyticus, V. parahaemolyticus and V. harveyi, respectively while minimum bactericidal concentrations (MBC) were 5, 15 and 20 mg ml-1. This study recommended that S.latifolium isolated from Persian Gulf waters has antibacterial activity potential against shrimp pathogen bacteria. }, Keywords = {Antibacterial activity, Sargassum latifolium, Seaweed extract, Vibrio, Persian Gulf }, volume = {11}, Number = {4}, pages = {765-775}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-737-en.html}, eprint = {http://jifro.ir/article-1-737-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {GençerTarakçi, B. and Bayrakdar, A. and Yaman, M.}, title = {Immunohistochemical study of the endocrine cells in the stomach and pyloric caeca of the mountain trout, Salmo trutta macrostigma}, abstract ={ The endocrine cells of Salmo trutta macrostigma stomach and pyloric caeca have been investigated using immunohistochemical techniques. 8 antisera were tested and 6 of them were detected in the endocrine cells serotonin, somatostatin, substance P, galanin, CCK and neuropeptide Y. These immunoreactive cells are described for the first time in the stomach and pyloric caeaca of Salmo trutta macrostigma. Neurotensin and VIP immunoreactivity were not detected in these regions. The regional distribution and relative frequency of the endocrine cells in the stomach and pyloric caeca of Salmo trutta macrostigma were resembled (with respect to serotonin, somatostatin, CCK and substance P immunoreactivity) and showed also some particularities (presence of galanin and NPY positive cells) to those of the other salmonid species. }, Keywords = {Endocrine cell, Stomach, Pyloric caeca, Salmo trutta macrostigma, Immunohistochemistry}, volume = {11}, Number = {4}, pages = {776-785}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-736-en.html}, eprint = {http://jifro.ir/article-1-736-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Guclu, Salim Serk}, title = {Population structure of Killifish, Aphanius anatoliae (Cyprinodontidae) endemic to Anatolia in Lake Eğirdir-Isparta (Turkey)}, abstract ={ The population structure of Aphanius anatoliae in Lake Eğirdir-Isparta-Turkey was studied, using 522 fish monthly in 2008. This study were observed in the number of individuals of each sex, age, weight and size compositions. In addition, the total length-weight relationship was calculated as well as the Von Bertalanffy growth equation. A study of the food uptake throughout the year has been carried by examination of the content of the digestive track. Males made up 51.92%, and females 48.08% of the population. The length-weight relationship and Von Bertalanffy growth equation were estimated as W= 0.0232 e 0.098L, r=0.8262, Lt = 54.51 (1 – e –0.279 ( t+1.345)), respectively. Bacillariophyta, Gammarus pulex and aquatic insecta are the major food items for Aphanius anatoliae. }, Keywords = {Anatolia, Killifish, Endemic, Growth, Feeding }, volume = {11}, Number = {4}, pages = {786-795}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-738-en.html}, eprint = {http://jifro.ir/article-1-738-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Janbaz, A. A. and Fazli, H. and Pourgholam, R. and Kaymaram, F. and AfraeiBandpei, M. A. and Abdolmaleki, S. and Khedmati, K.}, title = {Fishery and biological aspects of anchovy Kilka ( Clupeonella engrauliformis) in the southern Caspian Sea}, abstract ={  This paper aimed to investigate the fishery and biological characteristics of anchovy Kilka in Iranian waters of the Caspian Sea from 2005-2007, including length and age structure ,Von Bertalanffy growth parameters, length and age at first capture, condition factor, sex ratio, natural and fishing mortality. The examination of catch data approved that Kilka population in the Caspian Sea have been declined a few years ago following entrance jellyfish Ctenophora Mnemiopsis leidyi. The greatest destruction of anchovy kilka catch was occurred while the catch of anchovy from 4250 tonnes in 2005 reached to 924 tonnes in 2007. The results showed that K value and L∞ calculated 0.375/year, 131.7mm, respectively. The instantaneous coefficient of natural mortality was estimated 0.49/year.The instantaneous coefficient of fishing mortality and total mortality was 0.51 /year and 1/year, respectively. The Exploitation rate was calculated as 0.51. The length and age ranges restricted comparison to last decade and sharply decreased recruitment. In the past few years, the main reasons of disintegrates among anchovy Kilka stocks in the Caspian Sea were synchronized overfishing competitive anchovy Kilka with M. leidyi.  }, Keywords = {Caspian Sea, Clupeonella engrauliformis, Age, Growth, Sex ratio, Overfishing}, volume = {11}, Number = {4}, pages = {796-806}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-739-en.html}, eprint = {http://jifro.ir/article-1-739-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Banu, K.}, title = {Phytoplankton growth and microzooplankton grazing in the Homa Lagoon (İzmir Bay, Turkey)}, abstract ={ Phytoplankton growth and microzooplankton grazing were investigated at one station in the Homa Lagoon from February to January in 2006-2007. Our results showed significant seasonal variations in phytoplankton dynamics. Microzooplankton was mainly composed of dinoflagellates and tintinnid ciliates and nauplii. Microzooplankton grazing increased with increasing of temperature. Grazing rate was maximum levels in spring and summer. Microphytoplankton, which dominated the total algal biomass and production, were characterized by the proliferation of several chain-forming diatoms. Small heterotrophic flagellates and aloricate ciliates were the main controllers of phytoplankton. Phytoplankton represented a significant for micrograzers, which grazing represented 20–120% of diatom and cynabacteria algal production during 2006-2007. Microzooplankton has, however, a relatively high impact on microphytoplankton, as > 45% of microalgal production was consumed throughout the year. These results suggest that the low grazing was one of the factors contributing to the development of the spring bloom. All of seasonal bases, the phytoplankton production were grazed by microzooplankton in summer, autumn and winter–spring seasons have been changing between 20%-120%. The seasonal variation in the microzooplankton grazing pressure seems to result from the dominant size class of the phytoplankton community of this lagoon diatom and cynabacteria. }, Keywords = {Grazing, Lagoons, Microzooplankton, Nutrient, Phytoplankton}, volume = {11}, Number = {4}, pages = {807-824}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-740-en.html}, eprint = {http://jifro.ir/article-1-740-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Monsefrad, F. and ImanpourNamin, J. and Heidary, S.}, title = {Concentration of heavy and toxic metals Cu, Zn, Cd, Pb and Hg in liver and muscles of Rutilus frisii kutum during spawning season with respect to growth parameters}, abstract ={ 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 and Hg determined concentrations of Cd, Pb, Zn and Cu by vapor method. Cadmium was recorded only in liver samples. Range of other metals in muscle tissue were ND -0.591, 0.001-0.013, 11- 26 and 0.729 -7.261 µg.g-1dw for Pb, Hg, Zn and Cu respectively. Highest levels of Pb, Zn, and Cu were recorded in muscles Hg and Cd in liver samples. Growth parameters showed a significant relationship with Zn and Cd concentrations in liver samples and only Zn concentrations in muscle samples. There was a positive significant correlation between concentration of Cd in liver and physiological indices (p<0.05). Although higher concentration of Pb was recorded in this study in comparison to previous studies, based on Provisional Tolerable Weekly and daily Intake of fish for human health, kutum is considered safe for human consumption. Considering the results of this study it seems reproductive status of the fish influences heavy metals concentration in liver and muscles of kutum and therefore concentrations of some metals such as Zn and Cu in liver samples may not be a reliable bioindicator for environmental pollution.  }, Keywords = {Rutilus frisii kutum, Caspian Sea, Reproduction, Growth, Condition factor, HSI}, volume = {11}, Number = {4}, pages = {825-839}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-741-en.html}, eprint = {http://jifro.ir/article-1-741-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Salamat, N. and Havasi, M. and EarfaniMajd, N. and Savari, A.}, title = {Seasonal change of thyroid histomorphological structure and hormone production in yellowfin seabream (Acanthopagrus latus) in the Persian Gulf}, abstract ={ Seasonal changes of the thyroid gland structure and hormones secretion was examined in yellowfin seabream (Acanthopagrus latus) in the northwest of Persian Gulf (Musa creek). Thyroid gland composed of follicles scattered around the ventral aorta, near the gills. Follicular cells varied according to secretion of the gland during warm and cold seasons. Thyroid hormones (Triidothyronine [T3] and Thyroxine [T4]) were detected in the fish serum in levels ranged from 4.09-1.30 ng/mL for T3 and from 1.10-0.21 ng/mL for (T4) in the warm and cold seasons, respectively. The results showed that the height of thyroid epithelium and plasma concentration of thyroid hormones (thyroid activity) in A. latus increased significantly during spring and summer. The peak of these factors occurred in midsummer (August). Then, the thyroid activity decreased significantly during autumn and early winter from October to December according to decrease of temperature. T3 and T4 increased significantly from January to April. }, Keywords = {Yellowfin seabream, Acanthopagrus latus, Thyroid gland, Triidothyronine, Thyroxine, Histology, Plasma}, volume = {11}, Number = {4}, pages = {840-848}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-742-en.html}, eprint = {http://jifro.ir/article-1-742-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Shakibazadeh, S. and CheRoos, S. and Hafezieh, M. and Christianus, A. and SalehKamarudin, M. and SijamKamaruzaman,}, title = {A putative probiotic isolated from hatchery reared juvenile Penaeus monodon}, abstract ={ Probiotic is considered as a remedy to solve disease problem in shrimp aquaculture. Shrimp body and environment bacterial flora are recommended as reliable source for extracting of beneficial bacteria. Therefore, 5000 pieces of post larvae of Penaeus monodon were distributed equally in 4 tanks in probiotic and antibiotic free condition up to juvenile. Then microbiological samples from digestive system, muscles, body surface, rearing water and tank sediment were inoculated onto the selective media plates. Incident of total bacteria, Vibrio, Pseudomonas and Entrobacteriaceae were evaluated in different body parts and rearing environment of shrimp. The highest bacteria count for total bacteria, Vibrio, Pseudomonas was occurred in sediment followed by digestive system. No Entrobacteriaceae was observed from all samples. Isolated bacteria were identified and placed in 7 genera consisted of Vibrio, Shewanella, Burkholderia, Clavibacter, Staphylococcus, Brevibacterium, Corynebacterium, while one genus remained unidentified. Genus Shewanella exhibited highest frequent bacteria in digestive system of P. monodon which may be indicated its ability to colonization in digestive system. Shewanella algae was selected from whole isolated bacteria as candidate probiotic via well plate diffusion technique and cross streak antagonistic test against Vibrio harveyi, V. parahaemolyticus and V. alginolyticus. It was able to digest lipid and protein in tributyrin agar and skim milk agar.  }, Keywords = {Probiotic, Shewanella algae, Penaeus monodon, Shrimp}, volume = {11}, Number = {4}, pages = {849-866}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-743-en.html}, eprint = {http://jifro.ir/article-1-743-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {ShirvaniMahdavi, E. and KhajehRahimi, A. E. and VakiliAmini, H.}, title = {Pb and Cd accumulation in Avicennia marina from Qeshm Island,}, abstract ={ The accumulation of heavy metals Pb and Cd in the mangrove, Avicennia marina, was studied on the southern coast of Iran, particularly on and near Qeshm Island in the Persian Gulf. The samples were collected from 7 stations which they were analyzed by flame Atomic absorption spectrophotometer after chemical digestion. Maximum Pb and Cd in leaves are (34.50, 3.52 ppm) and minimum of them are in stems (2.00, 0.05 ppm) and the accumulation of metals in leaves is more than stems.  The different between monitored stations and accumulation of metals in tissues (P≥0.01) was not significant and there was no significant relationship between the leaves and stems of metals concentration (P≥0.05) but it was significant relationship between concentration of Pb and Cd in leaf tissue and stem tissue alone. (P<0.05). After entering these metals to food chain, are accumulated in human body and this matter may cause some disease by receiving metals more than provisional tolerable weekly intake (PTWI) of lead and cadmium, in adults which in 0.025 and 0.007 mg/kg body weight with standards ENHIS. }, Keywords = {Heavy metal, Avicennia marina, Persian Gulf}, volume = {11}, Number = {4}, pages = {867-875}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-744-en.html}, eprint = {http://jifro.ir/article-1-744-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Soltani, N. and Khodaei, K. and Alnajar, N. and Shahsavari, A and AshjaArdalan, A.}, title = {Cyanobacterial community patterns as water quality Bioindicators}, abstract ={ The main goal of this study was to examine the use of cyanobacteria for evaluating the quality of running water. Accordingly epilithic cyanobacterial communities were collected in Dez River and Ojeyreb drain in south of Iran. Samples were collected in two seasons: autumn and spring. Effective physical and chemical factors on the structure of cyanobacterial communities and the dispersion of the species in relation with them were determined using PCA and CCA analyses. The Shannon-wiener biodiversity index was used to define the species diversity. The concentration of Nitrate as main nutrient had significant increase in Drain stations. A decline in species richness was observed associated with these increases in nutrient load in both seasons in different cyanobacterial community structure.  The results indicated that order Oscillatoriales had higher proportion of cyanobacteria species at Drain. The species Oscillatoria chlorina, Chroococcus minor, Phormidium tenue and Lyngbya kuetzingii S had the most positive correlation with nutrient factor. Species Lyngbya infixa and Lyngbya mesotrichia had the most negative correlation with nitrate. Our results confirm the using of cyanobacteria species as indicators for monitoring eutrophication in rivers and define them as water eutrophication bioindicators.  }, Keywords = {Cyanobacteria, Drainage, Eutrophication, River, Water quality, PCA}, volume = {11}, Number = {4}, pages = {876-891}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-745-en.html}, eprint = {http://jifro.ir/article-1-745-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {TaghaviMotlagh, A. and Hakimelahi, M. and GhodratiShojaei, M. and Vahabnezhad, A. and TaheriMirghaed, A.}, title = {Feeding habits and stomach contents of Silver Sillago,}, abstract ={ The study investigated the stomach content of Sillago sihama in Hormuzgan Province waters located in the northern Persian Gulf from October 2009 to March 2010. The stomach analysis was carried out using frequency of occurrence and numeric methods. Diatoms, blue- green algae and dinoflagellates constituted main food of plant origin. Diatoms were found to be the most preferable food of plant origin where it occurred in more than 60.8% of food item by number and 59.5% by occurrence. Crustacean including crabs and their larvae, shrimps, copepods, eggs and larval forms comprised the maximum part of the food of animal origin. It was concluded that Sillago sihama in the Coastal waters of Hormuzgan Province is planktonivorous and feeding on a wide range of food of planktonic and benthic organisms.  }, Keywords = {Sillago sihama, Feeding, Stomach contents, FP, Persian Gulf}, volume = {11}, Number = {4}, pages = {892-901}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-746-en.html}, eprint = {http://jifro.ir/article-1-746-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {ZakipourRahimabadi, E. and Akbari, M. and Arshadi, A. and Effatpanah, E}, title = {Effect of different levels of dietary Betaine on growth performance, food efficiency and survival rate of pike perch (Sander lucioperca) fingerlings}, abstract ={ A 6-week feeding experiments were carried out to determine the effects of different levels of dietary betaine on growth performance, food efficiency and survival rate of pike perch which has a critical period during transition feeding. Fingerlings of pike perch were fed with live food (treatment A), without betaine added to biomar (treatment B), 1% betaine added to biomar (treatment C) and 2% betaine added to biomar (treatment D) in 1000 l concreted tanks. 200 fingerlings (1.50 g, mean weight) were stocked in each tank and fed up to 7 meals per day. Higher increment in body weight (4.99 ± 0.73 g), specific growth rate (3.90 ± 0.06) and food efficiency (104.42 ± 4.27) were obtained with treatment D (2% betaine added to biomar). This treatment also showed significant (P<0.05) decrease in food conversion ratio (0.93 ± 0.04) in comparison with other treatments. Highest survival rate was observed in treatment B (biomar without betaine) with a 34.5 % rate and greatest cannibalism (1.03 ± 0.01) was found in treatment D, respectively. It was concluded that betaine could increase the palatability and acceptability of food and could be suitable to weaning the pike perch fingerlings to artificial diet.  }, Keywords = {Sander lucioperca, Betaine, Food attractants, Growth, Food efficiency }, volume = {11}, Number = {4}, pages = {902-910}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-747-en.html}, eprint = {http://jifro.ir/article-1-747-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Zarei, M. and Aminzadeh, S. and Ghoroghi, A. and Motalebi, A. A. and Alikhajeh, J. and Daliri, M.}, title = {Chitinase Isolated from Water and Soil Bacteria in Shrimp farming Ponds}, abstract ={ Chitinases have received attention because of their wide applications in the medicine, biotechnology, agriculture, waste management and industrial applications such as food quality enhancer and biopesticide. Excessive use of insecticides has led to several problems related to pollution and environmental degradation. In this study, isolation and identification of native bacterial strains with chitin hydrolysis activity, took place from water and soil of shrimp culture ponds in Bushehr and Abadan. To investigate the capacity of our chitinase for using in insecticide, biochemical properties of selected chitinase obtained in this research were compared to that of produced by Bacillus cereus p-1, isolated from an insecticide tablet. In this research, three mesophilic strains containing: Serratia marcescens B4A, Citrobacter freundii B1A and Bacillus cereus B3R were isolated. Results showed a 1600 bp band corresponding to chitinase gene. The similarity between temperature and pH profile and stability of chitinase was extracted from native bacteria and ones was obtained from Bacillus cereus p-1 implied that chitinase extracted from Serratia marcescens B4A has potential application in industry.  }, Keywords = {Chitinase, Chitin, Shrimp pond, Bacteria }, volume = {11}, Number = {4}, pages = {911-925}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-748-en.html}, eprint = {http://jifro.ir/article-1-748-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Ahari, H. and Razavilar, V. and Motalebi, A. A. and Akbari-adergani, B. and Kakoolaki, s. and Anvar, A. A. and Shahbazadeh, D. and Mooraki, N.}, title = {Short Communication: DNA Extraction Using Liquid Nitrogen in Staphylococcus aureus}, abstract ={ }, Keywords = {Staphylococcus aureus, DNA extraction, Liquid nitrogen}, volume = {11}, Number = {4}, pages = {926-929}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-749-en.html}, eprint = {http://jifro.ir/article-1-749-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} } @article{ author = {Keleştemur, G. T.}, title = {Short Communication: Effects of Hypoxic Stress on Electrolyte Levels of Blood in Juvenile Rainbow Trout (Oncorhynchus mykiss)}, abstract ={ }, Keywords = {Rainbow trout, Flow rate, Hypoxic stress, Blood electrolyte}, volume = {11}, Number = {4}, pages = {930-937}, publisher = {Iranian Fisheries Research Organization}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, url = {http://jifro.ir/article-1-750-en.html}, eprint = {http://jifro.ir/article-1-750-en.pdf}, journal = {Iranian Journal of Fisheries Sciences}, issn = {1562-2916}, eissn = {}, year = {2012} }