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  • 1
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    Determination of biomass of fishes in Shadegan Wetland (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Biomass estimation of fishes were done by depletion method in Shadegan Wetland in 2011-12. Fishing effort and landing catch amount per unit effort was done via random oversea in fixed landing area monthly. Fishermen and catch statistics were obtained from census. Total catch was calculated from multiplication of effort and average catch. Fishes biological characteristics survey indicated that Golden barb (Barbus luteus) and Berzem ( Barbus pectoralis ) has maximum (62 kg/ha) and minimum (4 kg/ha) biomass respectively. Maximum and Minimum biomass was in spring (380 kg/ha) and in winter (58 kg/ha) respectively and mean biomass was estimated 249 kg/ha in whole area during one year. Number of fishermen were about 1317 and maximum fishing effort was in April, May and June. Total fish landing was 4300 tons per year in which 1119 tons was calculated in April. Large scaled barb ( Barbus grypus) and Abu mullet (liza abu) had maximum and minimum mean length and weight. The range length of most of fishes was low and their spawning season was in winter and spring. Length- weight relationship indicates their isometric growth. Despite of 45% decrease of number of fisherman to previous time (2008), catch effort and exploitation was increased (20%). Regarding fish living area (70000 ha), total biomass was 17430 tons.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biomass ; Mean length ; Gonad maturation ; Barbus grypus ; liza abu ; Barbus luteus ; Barbus pectoralis
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 42pp.
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  • 2
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    Biology of southern meager (Argyrosomus hololepidotus) in Khouzestan province coastal waters (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In order to study feeding and reproductive biology of Southern meager (A.hololepidotus) in North west of Persian Gulf. 143 (74 males and 69 females) species were collected between October of 2008 to October of 2009 in coast of Khouzestan. Maximum and minimum length of fish were 143 cm and 81 cm respectively Maximum mean length (128.4±7.5) and Minimum mean length (104.86±12.47) were detected in October and May respectively. Maximum weight (27.5Kg) and Minimum weight (5.7Kg) and also mean weight to males (15222±1371) and Min mean weight of females (16942/02±2095) were detected. Absolute fecundity (4111847.66) and relative fecundity (268.33) were analyzed. GSI Analysis showed that these species (A.hololepidotus) spawn during June to September with highest spawning rate in September. Results showed that Southern meager is a batch spawnerspecies relationship between length and weight of male Y=0.042L^2.70(n=74,R2 =0.86) and female species Y=0.061L^2.61(n=69, R2=0.85) and also total species Y=0.059L^2.62 (n=143, R2=0.86) were measured. Due to not finding Immature species during sampling LM50 wasn’t analyzed. Analysis HSI and K index showed highest value in April and May and lowest value in August and September respectively. Prey occurrence index showed that fish is main food item and Crustacean specially Shrimp and Mollusca are secondary food item of this species. Analysis of vacuity index showed that females of Southern meager are more gluttonous than males and this species feed during spawning season .In general we can classify Southern meager as a moderate feeding rate species.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biology ; Argyrosomus hololepidotus ; Feeding ; Reproductive ; Meager ; Species ; GSI ; Sampling
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 58pp.
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  • 3
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    Reproduction and feeding biology of Madagascar Meager (Argyrosomus hololepidotus) from Khuzestan coastal waters (2018)
    Details
    Publication Date: 2021-05-19
    Description: Biological attributes of Madagascar Meager (Argyrosomus hololepidotus) was studied from October 2008 to September 2009 in coastal waters of K.huzestan province. Average maximum length was 128.4±7.50 in October and average minimum length was 104.86±12.47 in May. The maximum weight was 27500g, the minimum weight was 5700g and mean weight for males and females were 15.222±4.40 and 16.942±5.09, respectively. Reproductive studies showed that peak maturity season occurred in July. The length­ weight relationship were calculated as W=0.042L 2 70 for males and W=0.06L2 61for females. The male-female sex ratio was calculated as 1:1.07 and chi-square analysis showed no significant difference (P〉0.05) between the two sexes. The average absolute and relative fecundity were estimated to be 4054045±37265 and 179.19±50.41, respectively Madagascar Meager is carnivore and we found the diet ofthe species consisted offish (75%), crustaceans (20%) and mollusks (5%). Analysis of monthly variation in the condition factor (Kn) indicated a fluctuation throughout the year, with a high level during May. Vacuity index indicated a higher feeding rate in males compared to females. We also found that the species continues feeding in the spawning season.
    Description: Published
    Keywords: Argyrosomus hololepidotus ; Biological attributes ; Reproduction ; Feeding ; Biology
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.67-76
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  • 4
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    Study and research on the fishing gears in northern waters of Persian Gulf (Khuzestan Province Coastal Waters) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Study and research on the fishing gears in northern waters of Persian Gulf (Khuzestan Province Coastal Waters) was carried out from March 2009 to February 2010. Sampling was done for trawl in summer and autumn, for purse seine in autumn and for gillnet and trap in all seasons. The average of total catch was in trawl 167.9 1.06 kg. The rate of bycatch in ± 207.89 and trap 1.66 ±270.17, gillnet 275.86 ± 48.4, purse seine 1795.6 ± trawl net was 87 percent, purse seine net 30.49 percent, gill net 70 percent and trap 6.19 percent. In this study, the number of bycatch species in trawl net are 38 species, gill net 36 species, trap 10 species and purse seine net 4 species. The resul of two way ANOVA test in trawl net between bycatch and time, and between bycatch and place showed non-significant difrences (p〉0.05, f= 0/3) (p〉 0.05, f= 0.9). The result of two way ANOVA test in gillnet between bycatch and time, showed significant( p〈0.05, f= 14.7), and between bycatch and place showed non-significant( p〉 0.05, f=1.8). The result of two way ANOVA test in trap between bycatch and time and between bycatch and place was non-significant (p〉 0.05, f= 0.5). According to the result, rate of bycatch of trawl net is higher than other gear, So control and manage of bycatch in trawl is most important.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Bycatch ; Fishing gear ; Net ; Trawl ; Gillnet ; Purse seine ; Trap ; CPUE ; Coastal waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 74pp.
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  • 5
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    Study and research on the fishing gears in northern waters of Persian Gulf (Khuzestan Province Coastal Waters) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25485 | 18721 | 2018-10-05 07:01:40 | 25485 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Study and research on the fishing gears in northern waters of Persian Gulf (Khuzestan Province Coastal Waters) was carried out from March 2009 to February 2010. Sampling was done for trawl in summer and autumn, for purse seine in autumn and for gillnet and trap in all seasons. The average of total catch was in trawl 167.9 1.06 kg. The rate of bycatch in ± 207.89 and trap 1.66 ±270.17, gillnet 275.86 ± 48.4, purse seine 1795.6 ± trawl net was 87 percent, purse seine net 30.49 percent, gill net 70 percent and trap 6.19 percent. In this study, the number of bycatch species in trawl net are 38 species, gill net 36 species, trap 10 species and purse seine net 4 species. The result of two way ANOVA test in trawl net between bycatch and time, and between bycatch and place showed non-significant differences (p〉0.05, f=0.3) (p〉0.05, f=0.9). The result of two way ANOVA test in gillnet between bycatch and time, showed significant (p〈0.05, f=14.7), and between bycatch and place showed non-significant (p〉0.05, f=1.8). The result of two way ANOVA test in trap between bycatch and time and between bycatch and place was non-significant (p〉0.05, f=0.5). According to the result, rate of bycatch of trawl net is higher than other gear, so control and manage of bycatch in trawl is most important.
    Keywords: Fisheries ; Iran ; Persian Gulf ; Khuzestan Province ; Bycatch ; Fishing gear ; Net ; Trawl ; Gillnet ; Purse seine ; Trap ; CPUE ; Coastal waters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 74
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  • 6
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    Reproduction and feeding biology of madagascar meager (Argyrosomus hololepidotus) from Khuzestan coastal waters (2021)
    In:  http://aquaticcommons.org/id/eprint/23855 | 18721 | 2018-08-01 04:39:34 | 23855 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: Biological attributes of Madagascar Meager (Argyrosomus hololepidotus) was studied from October 2008 to September 2009 in coastal waters of Khuzestan province. Average maximum length was 128.4±7.50 in October and average minimum length was 104.86±12.47 in May. The maximum weight was 27500g, the minimum weight was 5700g and mean weight for males and females were 15.222±4.40 and 16.942±5.09, respectively. Reproductive studies showed that peak maturity season occurred in July. The length­ weight relationship were calculated as W=0.042L 2 70 for males and W=0.06L2 61for females. The male-female sex ratio was calculated as 1:1.07 and chi-square analysis showed no significant difference (P〉0.05) between the two sexes. The average absolute and relative fecundity were estimated to be 4054045±37265 and 179.19±50.41, respectively Madagascar Meager is carnivore and we found the diet of the species consisted of fish (75%), crustaceans (20%) and mollusks (5%). Analysis of monthly variation in the condition factor (CF) indicated a fluctuation throughout the year, with a high level during May. Vacuity index indicated a higher feeding rate in males compared to females. We also found that the species continues feeding in the spawning season.
    Keywords: Biology ; Argyrosomus hololepidotus ; Biological attributes ; Khuzestan Province ; Persian Gulf ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 67-76
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  • 7
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    Designing and establishment of ISO/IEC 17025 in laboratories of national inland water aquaculture center and south Iran aquaculture research center (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25369 | 18721 | 2018-09-14 07:50:12 | 25369 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The project was carried out between June of 2011 and November of 2012,8 laboratories of research center in Anzali (Plankton, Algae, Hydrochemistry, Physiology, Ichthyology, Bentose, Parazitology, Virology) and 7 laboratories of research center in Ahvaz (Clinical pathology, Plankton, Hydrochemistry, Physiology, Ichthyology, Bentose, Parazitology, Virology) were selected for accreditation. The main stages for establishment of the system consisted of: 1-Conducting a gap analysis to compare the present state of the laboratories with ISO/IEC 17025 2-Training General requirements for the competence of testing and calibration laboratories Validation of methods Estimation of uncertainty Internal audits 3- Performing of technical and management requirements 4-Submit of quality manual to ASCB center in England in order to accredit In August of 2012 The main results were including: 1-Increase the accuracy of measurement in laboratories 2-Improvement of the Repeatability and Reproducibility of the test methods 3-Traceability and standardization of test methods 4- Calibration of measurement instruments 6- Updating of test methods 7-Standardization of physical condition of the laboratories 8- Getting the certification from ASCB center in
    Keywords: Information Management ; Iran ; Standardization ; ISO/IEC 17025 ; Laboratory ; Accreditation ; Calibration ; National Inland water Aquaculture Institute ; South Iran Aquaculture research Institute
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 84
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  • 8
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    Unknown
    Determination of biomass of fishes in Shadegan Wetland (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25590 | 18721 | 2018-10-07 10:45:23 | 25590 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Biomass estimation of fishes were done by depletion method in Shadegan Wetland in 2011-12. Fishing effort and landing catch amount per unit effort was done via random oversea in fixed landing area monthly. Fishermen and catch statistics were obtained from census. Total catch was calculated from multiplication of effort and average catch. Fishes biological characteristics survey indicated that Golden barb (Barbus luteus) and Berzem (Barbus pectoralis) has maximum (62 kg/ha) and minimum (4 kg/ha) biomass respectively. Maximum and Minimum biomass was in spring (380 kg/ha) and in winter (58 kg/ha) respectively and mean biomass was estimated 249 kg/ha in whole area during one year. Number of fishermen were about 1317 and maximum fishing effort was in April, May and June. Total fish landing was 4300 tons per year in which 1119 tons was calculated in April. Large scaled barb (Barbus grypus) and Abu mullet (liza abu) had maximum and minimum mean length and weight. The range length of most of fishes was low and their spawning season was in winter and spring. Length- weight relationship indicates their isometric growth. Despite of 45% decrease of number of fisherman to previous time (2008), catch effort and exploitation was increased (20%). Regarding fish living area (70000 ha), total biomass was 17430 tons.
    Keywords: Ecology ; Iran ; Khuzestan Province ; Shadegan Wetland ; Biomass ; Mean length ; Gonad maturation ; Barbus grypus ; liza abu ; Barbus luteus ; Barbus pectoralis
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 42
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  • 9
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    Unknown
    Biology of southern meager (Argyrosomus hololepidotus) in Khouzestan province coastal waters (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25813 | 18721 | 2018-10-13 10:17:34 | 25813 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In order to study feeding and reproductive biology of Southern meager (A.hololepidotus) in North West of Persian Gulf. 143 (74 males and 69 females) species were collected between October of 2008 to October of 2009 in coast of Khouzestan. Maximum and minimum length of fish were 143 cm and 81 cm respectively Maximum mean length (128.4±7.5) and Minimum mean length (104.86±12.47) were detected in October and May respectively. Maximum weight (27.5Kg) and Minimum weight (5.7Kg) and also mean weight to males (15222±1371) and Min mean weight of females (16942/02±2095) were detected. Absolute fecundity (4111847.66) and relative fecundity (268.33) were analyzed. GSI Analysis showed that these species (A.hololepidotus) spawn during June to September with highest spawning rate in September. Results showed that Southern meager is a batch spawner species relationship between length and weight of male Y=0.042L^2.70 (n=74,R2 =0.86) and female species Y=0.061L^2.61(n=69, R2=0.85) and also total species Y=0.059L^2.62 (n=143, R2=0.86) were measured. Due to not finding Immature species during sampling LM50 wasn’t analyzed. Analysis HSI and K index showed highest value in April and May and lowest value in August and September respectively. Prey occurrence index showed that fish is main food item and Crustacean specially Shrimp and Mollusca are secondary food item of this species. Analysis of vacuity index showed that females of Southern meager are more gluttonous than males and this species feed during spawning season. In general we can classify Southern meager as a moderate feeding rate species.
    Keywords: Biology ; Iran ; Persian Gulf ; Khouzestan Province ; Argyrosomus hololepidotus ; Feeding ; Reproductive ; Meager ; Species ; GSI ; Sampling
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 58
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  • 10
    facet.materialart.
    Unknown
    Designing and Establishment of ISO/IEC 17025 in Laboratories of National Inland water Aquaculture Center and south Iran Aquaculture research Center (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The project was carried out between June of 2011 and November of 2012,8 laboratories of research center in Anzali (Plankton , Algae, Hydrochemistry , Physiology, Ichthyology, Bentose, Parazitology, Virology) and 7 laboratories of research center in Ahvaz (Clinical pathology, Plankton , Hydrochemistry , Physiology, Ichthyology, Bentose, Parazitology, Virology) were selected for accreditation. The main stages for establishment of the system consisted of: 1-Conducting a gap analysis to compare the present state of the laboratories with ISO/IEC 17025 2-Training General requirements for the competence of testing and calibration laboratories Validation of methods Estimation of uncertainty Internal audits 3- Performing of technical and management requirements 4-Submit of quality manual to ASCB center in England in order to accredit In August of 2012 The main results were including: 1-Increase the accuracy of measurement in laboratories 2-Improvement of the Repeatability and Reproducibility of the test methods 3-Traceability and standardization of test methods 4- Calibration of measurement instruments 6- Updating of test methods 7-Standardization of physical condition of the laboratories 8- Getting the certification from ASCB center in
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Standardization ; ISO/IEC 17025 ; Laboratory ; Accreditation ; Calibration ; National Inland water Aquaculture Institute ; South Iran Aquaculture research Institute
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 84pp.
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