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  • 1
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    The effect of marine fish cage culture on macrobenthos community in Ghazale creek (North west of Persian Gulf) (2018)
    Iranian Fisheries Science Research Institute | Khorramshar, Iran
    Details
    Publication Date: 2021-05-19
    Description: Following of aquaculture activities increasing and important, the evaluation of the effect of this activities on marine ecosystem seem to be necessary. ...
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Aquaculture ; Cage culture ; Macrobenthos
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 105pp.
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  • 2
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    Study of consumed water quality and output effluents of active shrimp culture farm at Choebdeh zone in Abadan (2018)
    Iranian Fisheries Science Research Institute | Ahvaz, Iran
    Details
    Publication Date: 2021-05-19
    Description: By growing the population fishing and use water resources were developed and cause impacts on natural resources. ...
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Population ; Resource ; Fishing ; Water quality
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 147pp.
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  • 3
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    Lecithin effects on blood biochemical parameters and resistance to thermal stress in juvenile of Mesopotamichthys sharpeyi (Cyprinidae family) (2018)
    Details
    Publication Date: 2021-05-19
    Description: In this study, the effects of dietary chicken egg lecithin on some blood biochemical factors of Mesopotamichthys sharpeyi juveniles and resistance to thermal shock was investigated. Juveniles with initial average weight of 3.10±0.17 were stocked in 12 fiberglass tanks. Four isolipidic and isonitrogenic diets containing 0% (control), 2%, 4% and 6% chicken egg lecithin were used to feed the fish 3 times per day to satiation during 90 days. Total protein, cholesterol, high density lipoprotein (HDL) and albumin levels were significantly higher (p〈0.05) in juveniles fed 6% lecithin compared to the control diet. The triglyceride level was also significantly decreased (p 〈0.05) in juveniles fed 4% and 6% lecithin compared to that of control group. No significant differences (p〉0.05) in globulin and the ratio of albumin to globulin were found in dietary treatments. The thermal stress showed that survival rate of juveniles fed different levels of dietary chicken egg lecithin was higher than control group (p〈0.05). The results indicated that administration 4 to 6% of chicken egg lecithin in diets of juvenile M. sharpeyi have positive effects on promoting health status and resistance to thermal shock.
    Description: Published
    Keywords: Aquaculture ; Cyprinidae ; Lecithin ; Mesopotamichthys sharpeyi ; Blood parameters ; Thermal stress ; Survival ; Resistance ; Juvenile ; Biochemical
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1455-1464
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  • 4
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    The innate immunity changes of the female anadromous hilsa shad, Tenualosa ilisha , during spawning and post spawning season (2018)
    Details
    Publication Date: 2021-05-19
    Description: Tenualosa ilisha (Hamilton) is a valuable migratory fish belonging to the family Clupeidae and it is distributed in a wide area from the Persian Gulf to coasts of Pakistan and China’s southern sea. The aim of the present study was to investigate the changes occurring in innate immunity parameters during upstream migration and comparing them to those during post spawning. Sixty mature female hilsa shad were obtained using gill net from Karoon River in Khorramshahr during the spawning period (July, August and September 2014) and Hendijan coasts along the Persian Gulf coasts during post spawning period (October, November and December 2014). Immediately, blood samples were collected from the peduncle vein and then parameters including WBC (White Blood Cell) count, Differential WBC Count, plasma lysozyme content and C3 and C4 complement activity were determined. Based on the results, the levels of WBC, lysozyme and C3 during the spawning period were lower than those recorded during post spawning period. However, C4 levels were higher during spawning (p〈0.01). This fact revealed that some innate immunity parameters experience depression during upstream migration and spawning, while these parameters increase during the post spawning period, indicating the suppressive effects of spawning on fish immunity.
    Description: Published
    Keywords: Aquaculture ; Tenualosa ilisha ; Lysozyme activity ; Complement ; Anadromous ; Migration ; Female ; Immunity ; Spawning ; Plasma ; Lysozyme
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp. 1526-1539
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  • 5
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    Cryopreservation of carp spermatozoa by different extenders (2018)
    Details
    Publication Date: 2021-05-19
    Description: Production and storage of the best gametes are practices undertaken by fishery managers and researchers to improve fish reproduction technology and obtain the best spawners. The male spawners of carp (Cyprinus carpio) were chosen from two warm-water fish hatcheries near Rasht, Guilan Province. For the study, duration of motility of sperms, sperm density and fertilization rate were considered. The best samples were chosen for cryopreservation with four different extenders and were checked by fertilization tests after seven days preservation in liquid nitrogen. Results showed that by 1:1 dilution rate, the Alsever’s solution had the best results. The fertilization rate, production of eyed eggs and larvae by this extender in a multistage cooling experiment were 45%, 47.81 and 22.63% respectively.
    Description: Published
    Keywords: Carp ; Cryopreservation ; Sperm ; Fishery ; Spawners ; Cyprinus carpio ; Hatcheries ; Samples ; Fertilization
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.17-30
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  • 6
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    Physico-chemical properties of water in shrimp hatcheries of Choebdeh (Abadan), South Iran (2018)
    Details
    Publication Date: 2021-05-19
    Description: For assessing management efficiency in shrimp hatcheries of Choebdeh (Abadan), we surveyed the physico-chemical properties of water in two culture periods during the years 2001-2002. Different physical and chemical factors were measured in hatcheries under Thai and Philippine management methods. We measured factors such as salinity (17.9-35.3 ppt), BOD5 (6.12-8.72 ppm), DO (10.02-13.7 ppm), COD (4-98.9 ppm), NH3 (0-811A ppb), NO2 (10421 ppb), pH (8.04 -8.68), Turbidity (1-33 NTU), Ca (400.4-620.6 ppm), Mg (1104-1968 ppm), total hardness (6000-9400 ppm) and water temperature {25.4-32.4°C) while no amount of SH2 was found in the water samples. The results of this survey were compared with standard levels and safe ranges for aquaculture activities. Most factors were in standard range with only NH3 and NO2 showing a slight excess in some cases. An ANOVA test showed significant differences in levels of oxygen and COD of the tanks at different sampling times.
    Description: Published
    Keywords: Shrimp Hatchery ; Physico-Chemical Properties ; Ammonia ; Nitrite
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.69-78
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  • 7
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    In vitro effects of salinity and algae genera on the Rotifer (Brachionus plicatilis Muller 1786) (2018)
    Details
    Publication Date: 2021-05-19
    Description: The marine rotifer Brachionus plicatilis is extensively used as a major live food in fish larvae culture all over the world. In the present study an attempt was made to find out the optimum salinity and feeding conditions for growth of the rotifer B. plicatilis. The rotifer was cultured using Batch culture method at four salinities ranges (20, 25, 30 and 35ppt) and was fed with 3 species of microalgae including, Nannochloropsis oculata, Isochrysis galbana and Chlorella sp. The difference between salinity was not significant (P〉0.05) but there was a significant difference between the food types (P〈0.05). In all of the experiments, the combined effect of salinity and algal type on rotifer growth were significant (P〈0.05). The best result was observed in the experiment conducted at 35ppt salinity using N. oculata as the main food (378 ind/ml).
    Description: Published
    Keywords: Salinity ; Crustacean culture ; Batch culture ; Brachionus plicatilis ; Diets ; Growth ; Algae ; Marine
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1-7
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  • 8
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    Determination of maturation and spawning season of Otolithes ruber (Croaker Fish) in Khuzestan coastal water, Iran (2018)
    Details
    Publication Date: 2021-05-19
    Description: In this study, the stage of gonadal development, type and season of spawning of Otolithes ruber in the North West of Persian Gulf were identified. O.ruber maturation and spawning were studied by macroscopic, microscopic, and histologic observation of gonads which obtained from October 1996 to September 1997 in Khouzestan coasts. In the histologic sections of gonad tissue, stages I to VII of gonadal development were distinguished. Post Spawning follicules were observed only in stages VI and VII (in April and May). Atretic ovums were also clearly observed in these stages. Frequency of Ovum diameter distribution in stages II to V is a unimodal which proves that annual maturation of ovums and spawning of this species are simultaneous. The highest level of GSI was observed in March and also higher stages 01' gonadal maturation were observed in March and April. Fast drop in GSI in May and within occurrence of both spawning and spent individuals in only two months of the year shows the relatively short spawning season is spring (April-May). Sexual maturation of females occured after the males and its first length in females was 216 mm.
    Description: Published
    Keywords: Histologic ; Macroscopic ; Microscopic ; Maturation ; Spawning ; Otolithes ruber ; Croaker Fish ; Gonadal ; O.ruber ; Gonads tissue ; Follicules ; Atretic ovums ; Species ; GSI ; Female ; Male ; Length ; Sexual
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1-22
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  • 9
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    Feeding of Tiger tooth Croaker (Otolithes ruber) in Khuzestan coastal waters (2018)
    Details
    Publication Date: 2021-05-19
    Description: In order to study on feeding of O. ruber, sampling was carried out monthly from Nov. 96 to Aug. 97, stomach contents of 691 samples were examined of which, 67% were empty and 33% had feed residues. Index of being vacant was higher in males in comparison with females, this index reaches at maximum from Feb. to May for males and in Aug. and Jan. for females. Fish was found in 58% of the stomach, shrimp in 39% and fish and shrimp in 3% of them. During a year feeding intensity did not show a regular pattern and it was weak. Relative importance index for fish and shrimp was 63% and 37% respectively. The main food of immature fish was shrimp, which as they grow shrimp replaced by fish as the main food, so O. ruber is a carnivorous and hunter species.
    Description: Published
    Keywords: Tiger tooth Croaker ; Otolithes ruber ; Residues ; Index ; Males ; Females ; Stomach ; Shrimp ; Fish ; Immature ; Carnivorous ; Species ; Feeding
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.31-46
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  • 10
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    Effects of amino acid supplementation of lysine and methionine on body biochemical composition and amino acid profile of Sobaity sea bream (Sparidentex hasta) juveniles (2018)
    Details
    Publication Date: 2021-05-19
    Description: In this study that lasted to 8 weeks, was conducted to determine the effects of dietary supplementation of lysine and methionine on body biochemical composition and amino acid profile of Sobaity sea bream, Sparidentex hasta. Therefore, 180 juvenile fish with an initial weight of 31.38 ±1.4 g were distributed randomly among eighteen tanks. Fish were fed to satiation three time per day (08:00, 13:00 and 18:00 hours) with formulated diets containing six different levels of dietary methionine and lysine; Diet 1: a control diet without dietary amino acid supplementation; Diet 2: 100% methionine supplementation; Diet 3: 75% methionine and 25% lysine supplementation; Diet 4: 50% methionine and 50% lysine supplementation; Diet 5: 25% methionine and 75% lysine supplementation and Diet 6: 100% lysine supplementation.The results of this study showed Carcass protein content was significantly affected by the amino acid supplements and the highest level of carcass protein observed in fish were fed by diet 3(P〈0.05). Also Increasing levels of lysine in diet caused increases the amount of fat in the carcass although the content of carcass fat, moister and ash were not significantly different among thetreatments (P 〉 0.05). In addition, essential amino acids (ΣEAA) and non-essential amino acids (ΣNEAA) and ratio ΣEAA / ΣNEAA, were affected by lysine and methionine amino acid supplementation as ΣEAA and ratio (ΣEAA) / (ΣNEAA) significantly increased with increasing levels of amino acid supplementation and the highest amount of this parameters observed in groups were fed by diet with high levels of methionine.The results showed that adding 75% dietary methionine supplementation and 25% lysine supplemtation to the diet containg 45/95% protein, have positive effects on biochemical composition and amino acid profile in rearing of Sobaity seabream juveniles.
    Description: Published
    Keywords: Methionine ; Sparidentex hasta ; Sobaity sea bream ; Amino acids ; Supplementation ; Lysine ; Body ; Biochemical ; Composition ; Juveniles
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.129-142
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