ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Fisheries  (376)
  • Fish  (200)
  • Iranian Fisheries Science Research Institute  (358)
  • Singapore  (184)
  • 1
    Publication Date: 2021-05-19
    Description: Caspian trout (Salmo trutta caspius) is one of valuable fishes of the Caspian sea for people living in the Northern coastal area of Iran. Since fish stock and natural resources protection is one the Iranian fisheries research objectives, the most activity on Caspian trout rehabilitation was focused on releasing thousands of smolts in the rivers discharge to Caspian Sea. Catch statistics of this species has declined over last decades thus this study on quality of provided brood stocks and producing fries with suitable quality can help rehabilitation and rearing of this valuable species. Several rivers were considered for providing brooders to keep genetic resources variety of sea stocks. In spawning season 25 (9 male, 16 female) and 30 (5 male, 25 female) brooders were collected from fishermen in Mazandaran rivers and Gyilan coasts provinces respectively. After propagation and larvae rearing, 11500 (10-15 g.) and 50000 (less than 10 g.) juveniles were released in Gyilan and Mazandaran rivers respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Caspian trout ; Salmo trutta caspius ; Brood stocks ; Rehabilitation ; Fisheries ; Species ; Rearing ; Genetic ; Propagation ; Juvenile
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 32pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2021-05-19
    Description: Epinephelus coioides (family serranidae) is protogynous. This species is one of the most important fishes in food chain of marine proteins of persian Gulf. Therefore knowing about the reproductive biology and physiology of this species is an important role on aquaculture procedures. Monthly samples of Epinephelus coioides were obtained in khozestan Bahrekan province from 2001 to 2002 for annual variation of base line of reproductive hormone. The hormones such as: 17-B estradiol, Testosteron, Progesterone, Gonadotropin I ,II GTHI, II) and cortisol have assayed and also different stages of gonads from the histological point of view were studied by light and electron microscope. Aditional to morphometric and fecundity measurements, the important factors such as : Gonadosomatic index (GSI) Hepatosomotic index (HSI) and Condition factor (KF) were also studied. Environmental factors such as temperature, salinity, photoperiod and pH were analyzed for the determination of effective factors responsible for the changes of reproductive cycles. The flactmation of estroid hormones and gonadotropines show a significant variation in different stages of maturation, e.g 17-B estradiol's concentration in the third stages, GTH II in fourth stages of sexual maturation or final oocyte maturation, plasma Testosteron in post ovulation and Progesterone during maturation indicates the highest levels of above mentioned hormones. The total calcium concentration was high in all year. calcium concentration was correlated with GTH II synthesis and increases with GTH II in June. 17-B estradiol concentration was also correlated with GSI. The high concentration of cortisol throughout the year was an index of stress and development of ovary maturational processes. This species was protogynous synchronous hermaphrodites , and belongs to annual spawning species, being monandric. The sexual transition was found to occure in individuals of 51.2- 105 cm in length. GSI and HSI level confirms the time of spawning period is in April- June. Electrone microscopic studies of gonad tissues showed some changes in mitochondria and endoplasmic reticulum in the post ovulation, maturation and post spawning periods. During the monthly sampling the biochemistry of tissues variations indicated decrease in protein and lipid content, but an increase in water content of spawning fishes which was correlated to the maturation of Epinephelus coioides . sex ratio indicative of higher frequences of females to males during monthly sampling periods. The females were smaller than males in sizes, therefore the females lived in 8-15m depth, but males were living in upper limits of depth. The results indicated that the temperature was the most effective parameter in reproductive cycle of Epinephelus coioides and the mean 24°c was a convenient temperature for spawning. Photoperiod was the second effective. factor on the reproductive cycle for this species. It seemed that the increase in the photoperiod between January to May caused a development of the oocyte. Regarding to the results of this research, it seems that the period of spawning in Epinephelus coioides is in May- June and the aquaculture procedure of Epinephelus coioides could be performed in the above mentioned periods.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Gonadal tissue ; Hormone ; Fisheries biology ; Reproduction
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 166pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2021-05-19
    Description: Kilka fish oil contains the same types of compounds present in other edible fat and oil,their impurities are removed or reduced for use in many food application, therefore kilka oil is produced by wet - rendering process which involve cooking the fish, liquid fraction passed through decantor to seperate the solid fraction and water, treatments such as degumming,alkali refinning, bleaching and deoderising have been carried on crude oil , The refined oil are hydrogenated resulting in a hard fat with a number of desirable characteristics. The final analysis of different kilka oil such as colour, melting point, refractive index , wet,impurities, Iodine value, Anisidine number, soap, Totox number, acid value, Iron, Copper,Nickel, total microbial count, Coliforms, E.coli, Salmonella, Aspergillus and the organoleptic parameters showed that kilka oil can be made suitable for use in many food application if the solid fraction is seperated immediately after pressing Therefore the obtained kilka oil using traditional method is not suitable for human consumption. The results obtained from this project comparing to the previous literatures showed hardened kilka oil in the melting point of 32.5-34 c, refractive index of 1.4657, Iodine value of118 has the best quality and propertics. As a conclusion by a combination of old processes and new concepts kilka oil is not only another competitive food oil but also a family of products with unique composition for today consumer.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Kilka ; Fish ; Fish oil ; Iron ; Copper ; Nickel ; Aspergillus ; Salmonella ; E.coli ; Evaluation ; Human Consumption
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 75pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2021-05-19
    Description: The population dynamics of Otolithes ruber (Sciaenidae family) has been studied and researched in the Bushehr waters (Bahr e Cansar to Nayband bay). ....
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Population dynamics ; Spawning ; Gonad
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 126pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2021-05-19
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Hydrology ; Hydrobiology ; Fish
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 108pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    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.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    facet.materialart.
    Unknown
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Publication Date: 2021-05-19
    Description: Carp aquaculture is one of Maine potential for commercial and rural development , employing enhancement and earning income .This enterprise which is conducted by using fresh water and unfertile lands have been attended in the country since last seven decades. In accordance to wide area of cultivation in the country, maximum production is about 150000 tonnes in 2010. Establishment of aquaculture center by technical deputy of president, made a suitable opportunity for preparation of carp development road map. In this report, present condition and problems in front of carp development have been analyzed , and regarding to targets of long term country development, projects for research and executive sectors have been prepared.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Aquaculture ; Warm Water ; Fish ; Carp ; Development ; Road map ; Culture
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 115pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2021-05-19
    Description: In a preliminary study, the antifungal properties of essential oil of Satureja hortensis at different tenderness were tested on potato – dextrose agar (PDA). The fungus Aspergillus flavus PTCC 5006 was isolated from pistachio nut obtained from Rafsanjan area, Iran. Among the essential oil compounds, 500 ppm concentration was completely inhibited Aspergillus flavus growth. After determination of the most effective concentration, it was added to fish feeds compound which inhibited fungal growth and production of aflatoxin. Its concentration was determined as 500 ppm and over of essential oil of Satureja hortensis. The essential oil of Satureja hortensis was analyzed by means of GC-MS and their effective factors were evaluated for fish feeds and their results are shown in tables.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Antifungal properties ; Satureja hortensis ; Aspergillus flavus ; Fish feeds ; Feed ; Fish
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 59pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2021-05-19
    Description: An artificial Reef is a fabricated, underwater structure, typically built for promoting marine life in areas of generally featureless bottom. Creating artificial reefs began from 2000 in southern provinces in Iran. This study has surveyed about the Bushehr and Khozestan states. The objective is to determine the effectiveness of artificial reefs in attracting and enhancing the production different aquatics through increasing of fish assemblage and fishery. The performance of artificial reefs deployed off the coast of the Persian Gulf in 10 to 15m, was evaluated. The reefs comprised of seven artificial and one control (natural) statistical tests plan in three replicates. Three types of artificial reefs were used in this study. That two were designed reefs and one was not designed or used material. The experimental plan consisted (i) Reef ball (R), designed hemispherical shaped; (ii) Laneh Mahi (L), designed pyramid shaped; (iii) Used material (U); (iv) mixed (RL); (v) mixed (RU); (vi) mixed (LU); (vii) mixed (RLU); and (viii) control site (CS). Trap nets and under-water visual census surveys were adopted for seasonal sampling of fish aggregation. Results of statistical analysis using ANOVA and T-test of the mean Catch per Unit Effort (CPUE) showed significant difference (p〈0.05) in term of computing number of fish for aggregation of fishes. The study has concluded that reef deployments have influenced favorably the fish communities and fish harvests. Therefore, the artificial reefs, especially the mixed RLU, are appropriate tools for future fishing enhancement in the Persian Gulf of Iran.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Artificial reefs ; Fisheries ; Marine ; Survey ; Hemispherical ; ANOVA ; CPUE ; Underwater structure
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 188pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2021-05-19
    Description: This study was conducted for estimation of growth of parameters, mortality rates and fishing distribution of Parastromateus niger using length frequecy information collected in Sistan & Baluchestan province......
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Growth ; Mortality ; Distribution
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 76pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...