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  • 1
    Publication Date: 2021-05-19
    Description: Iran is one of ten disaster countries in terms of water crisis. Also, deficit of agricultural soil is a limiting agent for development of agronomy. Moreover, production of organic crops is very important for health nutrition. Tilapia is an important commercial fish because of its fast growth, tolerance to environmental conditions and diseases, possibility of intensive culture, low costs of production and marketable flavor. Production of aquatic and agricultural crops in an aquaponic system would ask these expectations. Aquaponic system that includes combination of hydroponics and water recycling systems was examined for modulated culture of tilapia and agricultural crops at the present study. Tilapia fries with 6.2g and 5.9g mean weight and stocking density of 40/m^3 were respectively stocked in two 2.5m^3 tanks at September 2013 for 9 months. Fish culture in the two tanks tended to 17.2kg/m^3 and 19kg/m^3 fish production with 658g and 596 mean final weigth, 98% and 100% survival and 1.4 and 1.6 food conversion rate (FCR), respectively. Plants were implanted using grow beds, floating rafts and nutrient film methods. Monthly production of mint, basil, lettuce, cucumber, tomato, pepper were 1.14, 0.5-0.8, 1.32, 2.7-4, 2.03-3.4 and 1.1 kg/m^2 crops, respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Aquaponics ; Greenhouse ; Tilapia ; Crops ; Fish culture ; Hydroponics ; Fish
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 40pp.
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  • 2
    Publication Date: 2021-05-19
    Description: In many species of finfish, females exhibit higher growth rates than males and achieve larger sizes. In addition, in some species, males mature before reaching marketable size. Therefore, there is great interest from the fish farmers to produce all-female stocks. In this project tried to reversing the sex of rainbow trout larvae by 17 estradiol and direct method, further more finding the optimum dose of this natural estrogen for endocrine sex reversion of Rainbow trout (O. mykiss). Four experimental treatments were designed with doses of 10, 20, 30 and 40 mg/kgf. Trout which treated with 40 mg/kgf yielded 96% female and greatest growth.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rainbow trout ; Sex control ; Gonad ; 17-B Estradiol ; Species ; Finfish ; Females ; Males ; Growth ; Mature ; Larvae ; O.mykiss
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 32pp.
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  • 3
    Publication Date: 2021-05-19
    Description: Gillan , Mazandaran and Gorgan provinces have temperate climate, thus they have more potential for aquatic animal culture. There are thousands hectare of lands for Aquaculure and fisheries in adjacent to Caspian Sea in this provinces. these areas(North alborz) have provided a favorable back ground for aquatic animal breeding and stock enhancement of species in the sea. As a result, this investigation executed during two stages (phases). At first stage, the goal of this project included the feasibility study and demonstrating the existing situation of fish stock enhancement activities in North Alborz area and second phase is to survey on distribution, and production activities of stock enhancing hatcheries as well as their constructions,and production time table. Survey was started frome 2006 to 2008 by using qestionaries in 7 hatcheries from tree provinces.results revieled that there are more than 10 species was subjected to restocking .Total releasing was about 300 millions of fry and finger lings in to the Caspian sea.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Stock Enhancement ; Broodstock ; Production ; Yield ; Artificial propagation ; Bony fishes ; Sturgeon fishes ; Restocking ; Aquatic ; Culture ; Aquaculure ; Fisheries ; Breeding ; Survey ; Hatcheries ; Fry ; Fingerlings
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 191pp.
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  • 4
    Publication Date: 2021-05-19
    Description: Salinity effects on brooders spawning, growth and survival rate of yellow fin sea bream (〈i〉Acanthopagrus latus〈/i〉) fingerlings was studied in Khouzestan Marine Fishes Research Station (Bandar-e Imam) in 2002- 2003. More than 200 brooders were caught in Mahshar creeks using hook, and 6 males and 3 females of brooders were introduced to each 4 tons tank. The experiments were carried out using 3 salinity treatments (30~c1, 35~c1 and 40~c1 ppt) in 3 replications. Survival rate of brooders in 4 tons tanks during late January to 4〈super〉th〈/super〉 April was estimated more than %90 in all salinities and the maximum rate was observed in 30 ppt treatment. Spawned brooders percentage in 40 ppt was more than the two other salinities, and spawning occurred in all three replications of this treatment. In all treatment, spawning started from early march (late lunar month) at 19~'C and continued at 23~'C. Duration and replication of spawnings in 40 ppt were more than other salinities, and last about 20 days. Released eggs (2461046), amount of eggs production per day (66413), average number of eggs per brooder (312914), and average eggs per kg body weight (649460) were found in 40 ppt more than other salinities. Floating eggs ratio was more than %90 in 40 ppt and it was significantly different to the others. Fertilization and hatching rates in 40 ppt treatment (86.7, 67 respectively) were more than 30 and 35 ppt but there was no significant difference. All spawnings cases , released eggs hatched.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Salinity ; Spawning ; Yellow fin ; Bream ; Acanthopagrus latus ; Propagation ; Density ; Survival rate ; Fingerling ; Growth ; Acanthopagrus latus ; Yellow fin sea bream
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 55pp.
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  • 5
    Publication Date: 2021-05-19
    Description: Aquaculture is the most important part of Fisheries Organization duties in Iran. During several planning and developing programs, aquaculture productions had a considerable growth. Due to good potential, these productions were higher than the planed one. The North Alborz regions were investigated by four groups of experts. The regions which investigated were including 3 important provinces (e.g. Guillan, Mazandaran and Golestan). The area where investigated was 940 km along with coastal zone of Caspian Sea or 58678 km2 in total. Around 27% of aquaculture production came from this region. However, subdivision of fisheries can play important role in the economics in the region. The fisheries sub-sector has an important role in the economy of the region, and despite the great potential for agriculture and tourist industries in the North Alborz, there is a significant role in the prosperity of the fisheries activities. In the present study shows that Mazandaran and Guillan provinces has more potential in reservoirs and aquaculture production when compared with other provinces. Productions in Mazandaran either in reservoirs were less than Guillan province. Due to lee in reservoirs, Mazandaran had less investment when compared with Guillan province. The figures show that carrying capacity of aquaculture production for 3 provinces (Mazandaran, Guilan and Golestan) was higher than other provinces in the entire country. Due to, large land base, less investment, more interesting of farmers, no needs of complicated technology, farmer would be able to develop reservoirs as consequences to enhance productions. However, developing reservoirs and supporting of it's; can increase the contribution of warm water species in inland water.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Survey ; Existence Currency ; Warm Water ; Fish ; Aquaculture
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 138pp.
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  • 6
    Publication Date: 2021-05-19
    Description: The comparative study of the streptococcinum, Hepar sulfur, Rosmarinus officinalis and erythromycin effects on cultured rainbow trout (Oncorhynchus mykiss) with experimental streptococcosis Homeopathy is one of alternative medicines that is very useful for soul and body diseases with accurate prescription . The goal of this study was “ survey of the effects of homeopathic remedies. There is not any more research about homeopathy on aquatics in the world especially in Iran, thus Some research about the effects of homeopathy on aquatics is needed. In this study , the effects of streptococcinum,Hepar sulfure, Rosmarinus officinalis(homeopathic remedies) and erythromycin in cultured rainbow trout ,with experimental streptococcosis, also the mortality, were compared. There was 6 treatment and 2 reviews in 300 liter tanks that each of treatment contained 40 juvenile rainbow trout with 25±5 gr arrange weight . Treatment 1: contained of erythromycin. Treatment 2: Streptococcinum C30. Treatment 3: Rosmarinus officinalis Q. Treatment 4: Hepar sulfur C30 . Treatment 5:(control treatment )without any injection and any therapy . Treatment 6 : ( positive control treatment ) with injection but without any therapy. Daily estimation of the water temperature , oxygen, PH and salinity and some other chemical factors. Tretment 1 had significance with the other treatments. Survival percent in treatments and their analysis showed that treatment 4(Hep-s) had significance (p〈0.05) with treatment 3(Ros-off) and its survival percent is more than the other homeopathic remedies. Erythromycin is chemical drug and has many side effects but Hep-s has not any side effect and is an natural remedy for Streptococcosis in homeopathy. Thus we offer the Hep-s to cure the streptococcosis but some research with disk diffusion test about the different doses of Hep-s is needed. Daily survey of clinical symptoms such as hemorrhages in the external organs, Under eyes, under skin, under fins and gills, hemorrhages and exophthalmos , were the most symptoms . Important pathological symptoms were: necrosis , hyperplasia and melanosis in branches, liver and kidneys, hemorrhages in heart, kidneys and in visceral tissues. According to the survival results, there was significant difference between the treatment 1 and the other treatments(p〈0.05). Also there was significant difference between treatment 3, treatment 4 and treatment 2(p〈0.05), this difference is due to the high dose(Q) of R.officinalis, while the two other homeopathic remedies were in a moderated dose (C30), 30× 100 diluted dose. Survival percent of treatment 4(Hep-s) was more than the other homeopathic remedies and was related to erythromycin. Erythromycin is chemical medicine and has many side effects, while Hepar sulfur has not any side effects if the prescription would be accurate. Hep-s is suggested with disk diffusion tests for relief the symptoms of streptococcosis.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Homeopathy ; Oncorhynchus mykiss ; Hep-s ; Ros-off ; Streptococcinum ; Erythromycin ; Streptococcusis ; Rainbow trout
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 38pp.
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  • 7
    Publication Date: 2021-05-19
    Description: This study was conducted to codify the guideline and indexes of broodstock management in salmonid fish and cryopreservation, selective breeding and sex reversal in hatchery to attain responsible aquaculture development. Cryopreservation includes of sperm and egg in term of economic is important in aquaculture. In this report mentioned the type and name of material. All female and sex reversal fish are produced by steroid hormone which mentioned in this report. Selective breeding include individual selection and family selection which could be used for genetic improvement of fish.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Economic ; Broodstock ; Reproduction ; Cryopreservation ; Genetic ; Breeding ; Aquaculture ; Salmonid fish ; Sex reversal ; Hatchery ; Sperm ; Egg ; Female ; Steroid hormones
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 46pp.
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  • 8
    Publication Date: 2021-05-19
    Description: An experiment was conducted to evaluate the possibility of adaptation, growth and survival of Red and Nile tilapia (Oreochromis niloticus) in underground brackish water. Fry with 0.3 and 0.7 g initial weight imported from Indonesia and after passing larviculture (20 g) were examined separately in fiber glass tank and earthen pond by two replicate. Fish were fed three times a day by using manual food (cp = 33.79) and carp food (cp = 25.05) at a restricted feeding program according to standard table during the 72 days rearing stage at light period. The results showed that some growth factors such as final weight, final length, daily growth rate, specific growth rate and weight gain in Nile tilapia were slightly higher than red tilapia but other factors such as survival and feed conversion rate in red tilapia were slightly higher than Nile tilapia. There were no significantly differences at 99% level among these factors. Length-weight relationship equation was w = 0.020 × TL3.012 in Nile tilapia and w = 0.015 × TL3.086 in red tilapia (r2 = 0.98), b value was 3.012 and 3.086 respectively in Nile and red tilapia representing isometric growth. So according to the results, good growth and high survival rate, it seems that both Nile and red tilapia could be good candidates for reproducing and rearing in brackish water condition.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Oreochromis niloticus ; Adaptation ; Growth ; Brackish water ; Survival ; Tilapia ; Oreochromis.sp ; Larviculture ; Rearing
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 44pp.
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  • 9
    Publication Date: 2021-05-19
    Description: Salinity effects on brooders spawning, growth and survival rate of yellow fin sea bream (Acanthopagrus latus) fingerlings was studied in Khouzestan Marine Fishes Research Station (Bandar -e – Imam) in 2002-2003. More than 200 brooders were caught in Mahshar creeks using hook, and 6 males and 3 females of brooders were introduced to each 4 tons tank. The experiments were carried out using 3 salinity treatments (30 ± 1, 35 ± 1 and 40 ± 1 ppt) in 3 replications. Survival rate of brooders in 4 tons tanks during late January to 4 th April was estimated more than %90 in all salinities and the maximum rate was observed in 30 ppt treatment. Spawned brooders percentage in 40 ppt was more than the two other salinities, and spawning occurred in all three replications of this treatment. In all treatment, spawning started from early march (late lunar month) at 19°c and continued at 23°c. Duration and replication of spawnings in 40 ppt were more than other salinities, and last about 20 days. Released eggs (2461046), amount of eggs production per day (66413), average number of eggs per brooder (312914), and average eggs per kg body weight (649460) were found in 40 ppt more than other salinities. Floating eggs ratio was more than %90 in 40 ppt and it was significantly different to the others. Fertilization and Hatching rates in 40 ppt treatment (86.7 , 67 respectively) were more than 30 and 35 ppt but there was no significant difference. All spawnings cases , released eggs hatched.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Salinity ; Propagation ; Yellow fin sea bream ; Spawning ; Density ; Survival rate ; Fingerling ; Acanthopagrus latus
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 65pp.
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  • 10
    Publication Date: 2021-05-19
    Description: 30000 juvenile Indian majour carps (Labeo Rohita,Cirhinus merigala, Catla catla) imported (2007 and 2008) and transferred to the earthen ponds in Astaneh Fisheries Research Station (Gilan ) and Sheiban Resaerch center (Khozestan) , In order to assess the viability of rearing fry up to 1 gram fingerlings under the climatic condition of north and south part of Iran . Growth parameters from the larval stage to 1 g were studied also .The fry with 300 mg weight, were released in to 3ponds.specimens were separated to tree experimental categories. fishes were fed with artificial food and also with the natural products of the ponds which were enriched with organic fertilizers, after being equally stocked in the ponds .During the experiment, oxygen level ,PH, turbidity, and temperature were measured . Monthly fry samples were taken, for weight and length biometrical analysis and also determination of the weight gain percentage, average daily growth rate, specific growth rate. Results have indicated adaptations and considerable growth in this species, with an increase from the initial weight of 300 mg to an average of 13.5±1.6 mg in 50 days period until the end of November for fingerlings.Catla was gain 1 g. during 15 day while Roho and Merigal were gain 1 g. during 14 and 10 days respectively. Results revealed that the Indian majour carps compatibility with the condition in Gilan province was succesfull and the combination of species and optimization of their compatibility specialy in other provinces like Sistan and Baluchestan were remind for futhre studies.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Indian carp ; Growth ; Labeo Rohita ; Cirhinus merigala ; Catla catla ; Juvenile ; Earthen ponds ; Fisheries ; Fry ; Fingerlings ; Artificial food ; Oxygen level ; Turbidity ; Fertilizers
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 48pp.
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