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  • 1
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    Physico-chemical survey of balikhly Chi River from outlat of Yamchi dam (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Thise studies were conducted seasonaly in 9 sampling period 1n 1991 to assess the physico-chemical parameter status of water of Balikhly chie river (the region after yamchi dam) of Ardabil Provence in relation to its potential for aquaculture development. Water samples were collected by rutner sampler and analyzed for temperature, turbidity, conductivity, total hardness, chloride, COD, CO3 , HCO3,Ca, mg ,TSS ,PO4, NH4 ,NO2 ,NO3, SiO2, DO, SO4 . The water quality showed temporal and spatial variation in this study .The result revealed that the water were slightly alkaline with high total hardness and bicarbonate alkalinity which indicate high buffering capacity to pH changes .the ranged of dissolve oxygen concentration were beetwin7.6 to 13.7 mg/l with mean value of 10.98mg/l which were above the permissible oxygen cocentratio over all study site.the mean water temperature was 17.79 and ranged between 1.6 to 19.6 that is suitable for cold water fish culture while seasonal temperature variation showed that winter is desirable for hatcheries and other seasons for culture practices. Electrical conductivity value ranged between 873 to 1502 with mean of 1135 falls within the limits of suitable salinity ranges for rainbow trout culture. The turbidity and TSS ranged between 20-60FTU and 60168mg/l respectivelyThe levl of TSS concentration were little higer than80 ppm lmits..The values obtained for physicochemical parametersin Balikhly chie river were in conformity with recommended values for fresh water fish farming standared.The fish production potential based on water divertion and oxygen concentration over four study site from yamchi dam to downstream without applying any aeration systems were 38.6,27, 59 and 27 metric tons respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Lak yamchi ; Physic-chemical parameter of water ; Survey ; Sampling ; Turbidity ; Temperature ; Conductivity ; Hardness
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 52pp.
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  • 2
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    Assessing water contamination with Anionic Surfactants in Anzall Lagoon (2018)
    Details
    Publication Date: 2021-05-19
    Description: We assessed amount of surfactants and their seasonal trend in eight stations in Anzali Lagoon and compared them with allowable levels in the years 2001 2002. We obtained 96 water samples and determined their surfactant content using liquid - liquid method applying methylene blue active substance (MBAS). The concentration of surfactants in Pirbazar varied from 0.176 to 0.422 while that of the Sea station was somewhere between 0.098 to 0.049 mg/i. Seasonal concentration of surfactants varied from 0.049 to 0.422 mgil averaging on 0.137 mg/1. A significant difference was found for surfactant concentration in different parts of the lagoon (p〈0.05) with the eastern zone being the most polluted area with 0.422 g/l of the pollutants compared to 0.066 mg/1 in the Sea. The highest amount of the surfactants was seen in winter in contrast to the lowest amount in spring. No statistically significant difference was found between concentrations of the surfactants in different seasons.
    Description: Published
    Keywords: Surfactants ; Contaminants
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.61-68
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  • 3
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    Comprehensive study on probability of controlling Caspian Sea invasive Ctenophora (Mnemiopsis leidyi) (Activity 2: Investigation on Mnemiopsis leidyi diet in the Caspian Sea) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Mnemiopsis leidyi is one the species of comb-jelly. It belongs to the Ctenophore phylum and Lobate order. It is a purely marine, free-swimming animal with a transparent jelly-like walnut-shaped body, which was transported from the Black Sea into Caspian possibly at the end of 1990s. This species is food rival of pelagic fish. It has been reported that the ctenophore caused the dramatic decrease of zooplankton and pelagic fish stock in the Black Sea. In this study, sampling on Mnemiopsis leidyi, zooplankton, phytoplankton was conducted from December 2003 to March 2005, from a total of 11 stations located along four transects (Anzali , Khazarabad, Tourkman and Gorgan Bay) by METU net in the Iranian coasts of the Caspian Sea. Clupeonella catch was done by light fishing with fishing vessel in Anzali region. The results showed that the biomass of M.leidyi had some fluctuation in different seasons and its maximum biomass was recorded in summer with a figure of 524.4±156.2 g.m2 Tourkman region and the minimum biomass was observed in winter with a figure of 5.15±1.81 g.m2 in Anzali region. Study of stomach of Mnemiopsis showed, that Acartia (belonged of Copepoda with 66 %), lamlibranchia (13 %) has the highest frequency and the lowest were Balanus nauplii, Rotatoria, Tintinnopsis and Podon polyphemoides. The maximum mean abundance of zooplankton was 29368±24318 n.m3 in winter (Anzali region) and the minimum was recorded 4170±5014 n.m3 in summer (Tourkman region). Copepoda was dominant zooplankton in the Iranian coasts of the Caspian Sea. Chrysophyta with 150000000±440000000 n.m3 and Euglenophyta with 260000±521000 n.m3 had the highest and the lowest frequency respectively in the Caspian Sea. The main foods of Clupeonella were Acartia with 80 %. The survey of stomach of Clupeonella showed that the feeding of these species was not good and the highest fullness index was recorded 220.95±314.67. These results showed, the main food item of Ctenophora and Clupeonella were Copepoda (Acartia). It seems, the impact of Mnemiopsis leidyi feeding has been the important factor in declining zooplankton populations, Clupeonella stocks, and also increasing of phytoplankton abundance.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Ctenophora ; Mnemiopsis leidyi ; Diet ; Species ; Phylum ; Pelagic fishes ; Sampling ; Zooplankton ; Phytoplankton ; Acartia ; Ctenophora ; Population ; Abundance
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 53pp.
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  • 4
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    Assessing water contamination with Anionic Surfactants in Anzali Lagoon (2018)
    Details
    Publication Date: 2021-05-19
    Description: We assessed amount of surfactants and their seasonal trend in eight stations in Anzali Lagoon and compared them with allowable levels in the years 2001-2002. We obtained 96 water samples and determined their surfactant content using liquid - liquid method applying methylene blue active substance (MBAS). The concentration of surfactants in Pirbazar varied from 0.176 to 0.422 while that of the Sea station was somewhere between 0.098 to 0.049 mg/l. Seasonal concentration of surfactants varied from 0.049 to 0.422 mg/l averaging on 0.137 mg/l. A significant difference was found for surfactant concentration in different parts of the lagoon (p〈0.05) with the eastern zone being the most polluted area with 0.422 g/l of the pollutants compared to 0.066 mg/l in the Sea. The highest amount of the surfactants was seen in winter in contrast to the lowest amount in spring. No statistically significant difference was found between concentrations of the surfactants in different seasons.
    Description: Published
    Keywords: Surfactants ; Contaminants ; Liquid
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.61-68
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  • 5
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    Preparation instructions micro-algae cultivate and concentrate it for use in silver carp feed and training necessary (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: According to the importance of micro-algae in aquatic feed such as fish in this study have been investigated Preparation of useful algae powder or concentrate for breeding silver carp , their impact on the growth of silver carp , rate per unit area and estimate n economic Development. Different algal species were isolated from hydrothermal fish farms, then were purified and mass culture . The next step microalgae were dried and powdered by spray dryer and were examined the fish feeding on them. During this study, 6 species of chlorophyt( Scenedesmus obliquus, Scenedesmus acuminatus, Chlorella vulgaris, Pediastrum boryanum, Pandorina morum, Ankistrodesmus falcatus) ,3 species of cyanophyta ( Anabaena flosaquae, Oscillatoria agardhi and Spirulina platensis) and 1 species of Bacillariophta ( Cyclotella meneghiniana were isolated from.Green algae and Blue -green algae were cultured in Zaindr medium, diatoms were cultured in Zaindr medium but with water of Anzali logoon and also in F2 medium with artificial sea water and spirulina was cultured in Zarouk medium. Microalgae were cultures then concentrated.Then the impact was examined on fish silver carp 2 to 3 grams. The results showed that Cyclotella has a greater role in the growth of silver carp and Anabaena floes aquae and Spirulina platensis tend to growth less than cyclotella. Scenedesmus obliquus and Scenedesmus acuminatus were respectively next algae that showed the greatest impact on fish growth. Scenedesmus obliquus feed rate was greater than any other algae for Daphnia.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Silver carp ; Algal concentrate ; Micro-algae ; Scenedesmus obliquus ; Scenedesmus acuminatus ; Chlorella vulgaris ; Pediastrum boryanum ; Pandorina morum ; Ankistrodesmus falcatus ; Spirulina platensis ; Oscillatoria agardhi ; Cyclotella meneghiniana ; Preparation ; Feed
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 73pp.
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  • 6
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    The study and feasibility of Cheshmeh-Ali River and down stream area of Shahid Shah-Charaghy Dam in Damghan for aquaculture development (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This research was conducted to finding of Cheshmeh-Ali and Shahcheraghi-Dam downstream areas potential for developing of aquaculture industry. The present study was conducted based on available information and data from monthly and seasonally sampling including geographical area, margin lands and fluctuations of river water, seasonal climatic changes view point of rainfall, temperature, wet, evaporation, wind velocity, sunshine hours, frost and also chemical and physical parameters of water including temperature, alkalinity, total hardness, chloride, calcium, magnesium, sodium, potassium, organic phosphorous and nitrogen, suspended solids, turbidity, water flow and flood conditions, and in addition phytoplankton and zooplankton communities, macrobenthic invertebrates, fishes, aquatic plants, amphibians, reptiles, birds. Results showed that the upstream and downstream regions of Shahcheraghi dam are not suitable for warm water aquaculture in earthen ponds. But view point of cold-water aquaculture, particularly trout, there are some good situations. Also it can be suggested different culture systems including of race way, octagonal concrete ponds, semi-circulation and circulation methods. But, due to water restrictions in the area, semi-circulation and circulation system is preferred. In ideal conditions can be produced about 1,600 tones of trout, if all the capacity of this area be used for aquaculture. Otherwise, in limited circumstances view point of exploitation possibility of the water, only about 700 tons can be produced. In addition, there were appropriate facilities in spring area of Cheshmehali for tourism industry, that it can be considered as priorities for economic development in the region. Due to the low sensitivity of the ecologically conditions, native or exotic aquatic species rearing in indoor methods can be recommended.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Chemical ; Physical ; Site selection ; Aquaculture capacity ; Sampling ; Temperature ; Turbidity ; Culture
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 71pp.
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  • 7
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    Comprehensive study on probability of controlling Caspian Sea invasive ctenophora (Mnemiopsis leidyi) (Activity 2: Investigation on Mnemiopsis leidyi diet in the Caspian Sea) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25091 | 18721 | 2018-08-22 07:12:26 | 25091 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Mnemiopsis leidyi is one the species of comb-jelly. It belongs to the Ctenophore phylum and Lobate order. It is a purely marine, free-swimming animal with a transparent jelly-like walnut-shaped body, which was transported from the Black Sea into Caspian possibly at the end of 1990s. This species is food rival of pelagic fish. It has been reported that the ctenophore caused the dramatic decrease of zooplankton and pelagic fish stock in the Black Sea. In this study, sampling on Mnemiopsis leidyi, zooplankton, phytoplankton was conducted from December 2003 to March 2005, from a total of 11 stations located along four transects (Anzali, Khazarabad, Tourkman and Gorgan Bay) by METU net in the Iranian coasts of the Caspian Sea. Clupeonella catch was done by light fishing with fishing vessel in Anzali region. The results showed that the biomass of M.leidyi had some fluctuation in different seasons and its maximum biomass was recorded in summer with a figure of 524.4±156.2 g.m^2 Tourkman region and the minimum biomass was observed in winter with a figure of 5.15±1.81 g.m^2 in Anzali region. Study of stomach of Mnemiopsis showed, that Acartia (belonged of Copepoda with 66 %), lamlibranchia (13 %) has the highest frequency and the lowest were Balanus nauplii, Rotatoria, Tintinnopsis and Podon polyphemoides. The maximum mean abundance of zooplankton was 29368±24318 n.m3 in winter (Anzali region) and the minimum was recorded 4170±5014 n.m3 in summer (Tourkman region). Copepoda was dominant zooplankton in the Iranian coasts of the Caspian Sea. Chrysophyta with 150000000±440000000 n.m3 and Euglenophyta with 260000±521000 n.m3 had the highest and the lowest frequency respectively in the Caspian Sea. The main foods of Clupeonella were Acartia with 80 %. The survey of stomach of Clupeonella showed that the feeding of these species was not good and the highest fullness index was recorded 220.95±314.67. These results showed, the main food item of Ctenophora and Clupeonella were Copepoda (Acartia). It seems, the impact of Mnemiopsis leidyi feeding has been the important factor in declining zooplankton populations, Clupeonella stocks, and also increasing of phytoplankton abundance.
    Keywords: Biology ; Iran ; Caspian Sea ; Gorgan Bay ; Bandar Tourkman ; Khazarabad ; Anzali ; Ctenophora ; Mnemiopsis leidyi ; Diet ; Species ; Phylum ; Pelagic fishes ; Sampling ; Zooplankton ; Phytoplankton ; Acartia ; Ctenophora ; Population ; Abundance
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 53
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  • 8
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    Assessing water contamination with anionic surfactants in Anzall Lagoon (2021)
    In:  http://aquaticcommons.org/id/eprint/24295 | 18721 | 2018-08-04 09:04:59 | 24295 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: We assessed amount of surfactants and their seasonal trend in eight stations in Anzali Lagoon and compared them with allowable levels in the years 2001 2002. We obtained 96 water samples and determined their surfactant content using liquid - liquid method applying methylene blue active substance (MBAS). The concentration of surfactants in Pirbazar varied from 0.176 to 0.422 while that of the Sea station was somewhere between 0.098 to 0.049 mg/i. Seasonal concentration of surfactants varied from 0.049 to 0.422 mgil averaging on 0.137 mg/1. A significant difference was found for surfactant concentration in different parts of the lagoon (p〈0.05) with the eastern zone being the most polluted area with 0.422 g/l of the pollutants compared to 0.066 mg/1 in the Sea. The highest amount of the surfactants was seen in winter in contrast to the lowest amount in spring. No statistically significant difference was found between concentrations of the surfactants in different seasons.
    Keywords: Pollution ; Surfactants ; Contaminants ; Anzali Lagoon ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 61-68
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  • 9
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    Preparation instructions micro-algae cultivate and concentrate it for use in silver carp feed and training necessary (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25467 | 18721 | 2018-09-26 09:41:56 | 25467 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: According to the importance of micro-algae in aquatic feed such as fish in this study have been investigated Preparation of useful algae powder or concentrate for breeding silver carp , their impact on the growth of silver carp , rate per unit area and estimate n economic Development. Different algal species were isolated from hydrothermal fish farms, then were purified and mass culture . The next step microalgae were dried and powdered by spray dryer and were examined the fish feeding on them. During this study, 6 species of chlorophyt( Scenedesmus obliquus, Scenedesmus acuminatus, Chlorella vulgaris, Pediastrum boryanum, Pandorina morum, Ankistrodesmus falcatus) ,3 species of cyanophyta ( Anabaena flosaquae, Oscillatoria agardhi and Spirulina platensis) and 1 species of Bacillariophta ( Cyclotella meneghiniana were isolated from.Green algae and Blue -green algae were cultured in Zaindr medium, diatoms were cultured in Zaindr medium but with water of Anzali logoon and also in F2 medium with artificial sea water and spirulina was cultured in Zarouk medium. Microalgae were cultures then concentrated.Then the impact was examined on fish silver carp 2 to 3 grams. The results showed that Cyclotella has a greater role in the growth of silver carp and Anabaena floes aquae and Spirulina platensis tend to growth less than cyclotella. Scenedesmus obliquus and Scenedesmus acuminatus were respectively next algae that showed the greatest impact on fish growth. Scenedesmus obliquus feed rate was greater than any other algae for Daphnia.
    Keywords: Aquaculture ; Iran ; Silver carp ; Algal concentrate ; Micro-algae ; Scenedesmus obliquus ; Scenedesmus acuminatus ; Chlorella vulgaris ; Pediastrum boryanum ; Pandorina morum ; Ankistrodesmus falcatus ; Spirulina platensis ; Oscillatoria agardhi ; Cyclotella meneghiniana ; Preparation ; Feed
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 73
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  • 10
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    The study and feasibility of Cheshmeh-Ali River and down stream area of Shahid Shah-Charaghy Dam in Damghan for aquaculture development (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25507 | 18721 | 2018-10-05 07:40:08 | 25507 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This research was conducted to finding of Cheshmeh-Ali and Shahcheraghi-Dam downstream areas potential for developing of aquaculture industry. The present study was conducted based on available information and data from monthly and seasonally sampling including geographical area, margin lands and fluctuations of river water, seasonal climatic changes view point of rainfall, temperature, wet, evaporation, wind velocity, sunshine hours, frost and also chemical and physical parameters of water including temperature, alkalinity, total hardness, chloride, calcium, magnesium, sodium, potassium, organic phosphorous and nitrogen, suspended solids, turbidity, water flow and flood conditions, and in addition phytoplankton and zooplankton communities, macrobenthic invertebrates, fishes, aquatic plants, amphibians, reptiles, birds. Results showed that the upstream and downstream regions of Shahcheraghi dam are not suitable for warm water aquaculture in earthen ponds. But view point of cold-water aquaculture, particularly trout, there are some good situations. Also it can be suggested different culture systems including of race way, octagonal concrete ponds, semi-circulation and circulation methods. But, due to water restrictions in the area, semi-circulation and circulation system is preferred. In ideal conditions can be produced about 1,600 tones of trout, if all the capacity of this area be used for aquaculture. Otherwise, in limited circumstances view point of exploitation possibility of the water, only about 700 tons can be produced. In addition, there were appropriate facilities in spring area of Cheshmehali for tourism industry, that it can be considered as priorities for economic development in the region. Due to the low sensitivity of the ecologically conditions, native or exotic aquatic species rearing in indoor methods can be recommended.
    Keywords: Aquaculture ; Iran ; Semnan Province ; Damghan ; Shahcheraghi Dam ; Cheshmeh-Ali River ; Site selection ; Aquaculture capacity ; Sampling ; Temperature ; Turbidity ; Culture
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 71
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