ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    The effectiveness of artificial reefs for rehabilitation and production of fisheries in Iran (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    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 ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Evaluation of Artemia Stock in Urmia lake (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Stock assessment of Urmia Lake Artemia between 2000-2001 revealed intense decreasing cysts and biomass compared the previous years. Reducing annual rain falling from 32 to 18 cm in west Azarbayjan province lowered fresh water entrance from 4 billion m3 to 1.8 billion m3 to the lake as in 2001 the water volume reached to 6 billion m3 . Decreasing more than 2 billion m3 water volume of the lake per year with increasing the evaporation rate and existence of 5 billion tons salt inside the lake increased water salinity from 17% (1999) to 23.3% (2001) with max- min range of 250-258 ppt without any differences between the seasons. Mean transparency measured with Sechi disk was 138 cm (maximum 215 in Autumn and minimum 51 cm in Spring). Annual mean of water temperature 15 with fluctuation of 6 in winter to 22.13 in Autumn. this study, Artemia (different life stages) and phytoplankton were sampled by planktonic net from 12 suit stations which were selected from 36 sites used in previous Artemia stock assessment project done by Gent University, 1995. Phytoplankton sample identified and counted using identifying key and microscopic study. Results showed that in winter, the number of cysts per cubic meter 756 (minimum) and 2015 (maximum) in Autumn, with annual mean of 1000.m-3. Minimum 0.7 g.m-3 biomass wet weight (without cysts) were obtain in winter while the maximum (9.22 g.m-3) was in spring. The numbers of different nauplii stages per cubic meter with range of 0.03 in winter to 9.22 in spring( mean of 2.46) and juvenile stage per cubic meter were between 0.05 in winter to 1.16 in spring( mean= 0.66). It's showed higher percentage of larval stages in spring toward to higher juvenile and adults stages in summer to mid-autumn. Only Dunaliella and Nitzschia were identified but Dunaliella was dominated ( 95% of total identified phytoplankton with higher abundance, 31000 cells.L-1 in spring season(especially in May and June). Total biomass concluding cysts in studied year was 2700 tons( 30 tons cysts and 2670 tons other biomass which with 10% harvestable biomass,3 tons cysts and 267 tons other biomass could be harvested without any diverse effects on Artemia stock. Cysts and biomass were found more in central to southern part of the lake . The best season for cysts harvesting were Autumn follow by Spring and for biomass harvest were Summer follow by Autumn.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Artemia urmiana ; Stock assessment ; Phytoplankton ; Dunaliella ; Nitzschia
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 74pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Stock discrimination of Rutilus rutilus by using Otoliths (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Trace elements incorporated into growing surface of the fish otoliths. It reflects the physical and chemical characteristics of the ambient water. Since otoliths grow continuously without re-absorption throughout the life of the fish, fish population growing up in different elemental composition. Trace element concentration in fish otoliths was analyzed by proton induced X-ray emission (PIXE). Otoliths were collected from Rutilus rutilus, during 1999-2000 in the eastern part of Caspian Sea. Ca, K, Sri Cu, Zn and Br in the otothis can be detected by using PIXE our results inform K, Sr, Fe, Zn as marker of this study. Therefore, in the two different conditions, separate 'age classes and without separate age classes, Astara and Turkmen regions were discriminated. Comparison of mean age in the different area show, deference of mean age is significant in the Astara and Turkmen.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Chemical ; Stock discrimination ; Rutilus rutilus ; Otoliths ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 77pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    Stock assessment of the bony fishes in Iranian coastal waters of the Caspian Sea (2005-2007) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Exploitation of bony fishes resources started on 12 October 2005 and finished on 9 April 2006 in 2005-2006. 142 beach seines caught about 14333.4 tons of bony fishes by 47101 hauling. The total catch was estimated 21844.7 tones (Includes illegal fishery). Kutum, mullets and common carp comprised more than 97 percent of total catch. Length classes 39-40, 31-32 and 40-41 cm predominated for kuttum, golden grey mullet and common carp, respectively. Age groups 3 to 5 year comprised 84.2, 74.8 and 83.7 percent for Kuttum, golden grey mullet and common carp, respectively and age group 4 year was dominant with 42.0, 35.9 and 43.0 percent, respectively. K value and L∞ calculated 0.26 (/year) and 58.3 cm for Kuttum and 0.15 (/year) and 61.5 cm for golden grey mullet, respectively. The total biomass and MSY estimated about 24733.7 and 8550.4 tones for kuttum and about 16948.0 and 4999.0 tones for golden grey mullet, respectively. Exploitation rate (E) calculated 0.71 and 0.70 for Kuttum and golden grey mullet, respectively. In 2006-2007, the exploitation of bony fishes resources started on 12 October 2006 and finished on 7 April 2007 in 2006-2007. 134 beach seines caught about 14120.0 tones of bony fishes by 48470 hauling. The total catch was estimated 23801.8 tones (Includes illegal fishery). Kutum, mullets and common carp comprised more than 98.5 percent of total catch. Length classes 39-40 and 38-39 cm predominated for kutum and common carp, respectively and length classes 27-28 and 29-30 cm predominated for golden grey mullet. Age groups 3 to 5 year comprised 80.2 and 71.8 percent for kutum and golden grey mullet, respectively and age groups 4 to 6 year comprised 71.8 percent for common carp. Age group 3, 4 and 5 year was dominant with 35.5, 32.1 and 27.1 percent for kutum, golden grey mullet and common carp respectively. K value and L∞ calculated 0.27 (/year) and 60.7 cm for Kutum, 0.2 (/year) and 58.4 cm for golden grey mullet and 0.19 (/year) and 66.7 cm for common carp, respectively. The total biomass and MSY estimated about 46654.9 and 14801.4 tones for Kutum, about 19549.0 and 5748.4 tones for golden grey mullet and about 10584.3 and 2186.0 tones for common carp, respectively. Exploitation rate (E) calculated 0.69, 0.53 and 0.52 for kuttum, golden grey mullet and common carp, respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Bony fishes ; Kuttum ; Golden grey mullet ; Growth and mortality parameters ; Biomass ; MSY ; Common carp ; Coastal waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 165pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 5
    facet.materialart.
    Unknown
    Research on determining of mesh size standard for beach seine fishery cooperatives to boost sustainable Bony-fish fishery in southern Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Bony fish stocks are being legally utilized by 134 fishing cooperatives in the Iranian side of the Caspian Sea mainly through beach seine. This fishing method has been invariantly used over the past. Fifty years with actually no alteration or technical modifications in the fishing nets despite the substantial changes in the quality & quantity of bony fish resources. Based on the data obtained from the stock assessment project for bony fish, the amount of premature or young fish (substandard size) caught during the past decade has been far greater than those of authorized fish size and even the figures far certain species suggest heavy over fishing to such an extent that in the case of frisii kutum, there has been a reduction by 50% in the overall kutum landings.Thus in order to modify the technical design of the fishing with a view to alleviate the catch of non-standard fish and whereby prevent over fishing by beach seine, it seems imperative therefore to launch a biometric study on bony fish stocks particularly the two intended fish species namely Rutilus frisii kutum and mullet which would involve identification of their standard weight and length using pertinent mathematical equations as well as determining proper mesh size of the code-end and other parts of the nets & consequently the H. R, d/a coefficients. The operations related to project were carried out in the "Inland Aquaculture Research Institute" net mating plant and beach seine site in Anzali during 2005-7 which aimed at designing and constructing standardized beach seines and comparing the fishing performance & yields with those of ordinary beach seine nets under equal conditions with a ratio of 3:1. The results concerning the quality and quantity of fish caught during a whole fishing cycle were recorded in the related data forms. The statistical analysis consisting the comparison of the quality of fishing performance in both the experimental and control beach seine nets was made using T. student and excel, spss 12 software packages. The results indicated that the reduction in the amount of non-standard fish caught in standardized beach seine net (the experimental net) was meaningfully different from that of the ordinary (control) net showing the superior fishing performance of the former. The catch level of non-standard R.frisii kutum decreased from 67.1% in the control beach seine net down to 7.1% in the standardized beach seine net and these figures for mullet were 29.98% and 1.1% respectively. Based on the results obtained and considering the apparent superiority of the experimental net in catching greater number of mature fish and less number of premature or non-standard sized fish, the use of this modified beach seine net can be proposed to Iranian fisheries organization as a viable alternative to the traditional beach seine nets.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Beach seine net ; Rutilus frisii kutum ; Mullet ; Standard sized fish ; Non-standard sized fish ; Bony fish ; Fishing ; Stock assessment ; R.frisii kutum
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 84pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 6
    facet.materialart.
    Unknown
    Research on determining of mesh size standard for beach seine fishery cooperatives to boost sustainable bony-fish fishery in southern Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25169 | 18721 | 2018-08-26 17:43:57 | 25169 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Bony fish stocks are being legally utilized by 134 fishing cooperatives in the Iranian side of the Caspian Sea mainly through beach seine. This fishing method has been invariantly used over the past. Fifty years with actually no alteration or technical modifications in the fishing nets despite the substantial changes in the quality & quantity of bony fish resources. Based on the data obtained from the stock assessment project for bony fish, the amount of premature or young fish (substandard size) caught during the past decade has been far greater than those of authorized fish size and even the figures for certain species suggest heavy over fishing to such an extent that in the case of frisii kutum, there has been a reduction by 50% in the overall kutum landings. Thus in order to modify the technical design of the fishing with a view to alleviate the catch of non-standard fish and whereby prevent over fishing by beach seine, it seems imperative therefore to launch a biometric study on bony fish stocks particularly the two intended fish species namely Rutilus frisii kutum and mullet which would involve identification of their standard weight and length using pertinent mathematical equations as well as determining proper mesh size of the code-end and other parts of the nets & consequently the H. R, d/a coefficients. The operations related to project were carried out in the "Inland Aquaculture Research Institute" net mating plant and beach seine site in Anzali during 2005-7 which aimed at designing and constructing standardized beach seines and comparing the fishing performance & yields with those of ordinary beach seine nets under equal conditions with a ratio of 3:1. The results concerning the quality and quantity of fish caught during a whole fishing cycle were recorded in the related data forms. The statistical analysis consisting the comparison of the quality of fishing performance in both the experimental and control beach seine nets was made using T. student and excel, spss 12 software packages. The results indicated that the reduction in the amount of non-standard fish caught in standardized beach seine net (the experimental net) was meaningfully different from that of the ordinary (control) net showing the superior fishing performance of the former. The catch level of non-standard R.frisii kutum decreased from 67.1% in the control beach seine net down to 7.1% in the standardized beach seine net and these figures for mullet were 29.98% and 1.1% respectively. Based on the results obtained and considering the apparent superiority of the experimental net in catching greater number of mature fish and less number of premature or non-standard sized fish, the use of this modified beach seine net can be proposed to Iranian fisheries organization as a viable alternative to the traditional beach seine nets.
    Keywords: Fisheries ; Iran ; Caspian Sea ; Anzali ; Beach seine net ; Rutilus frisii kutum ; Mullet ; Standard sized fish ; Non-standard sized fish ; Bony fish ; Fishing ; Stock assessment ; R.frisii kutum
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 84
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 7
    facet.materialart.
    Unknown
    Stock assessment of the bony fishes in Iranian coastal waters of the Caspian Sea (2005-2007) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25192 | 18721 | 2018-09-05 16:01:12 | 25192 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Exploitation of bony fishes resources started on 12 October 2005 and finished on 9 April 2006 in 2005-2006. 142 beach seines caught about 14333.4 tons of bony fishes by 47101 hauling. The total catch was estimated 21844.7 tones (Includes illegal fishery). Kutum, mullets and common carp comprised more than 97 percent of total catch. Length classes 39-40, 31-32 and 40-41 cm predominated for kutum, golden grey mullet and common carp, respectively. Age groups 3 to 5 year comprised 84.2, 74.8 and 83.7 percent for Kutum, golden grey mullet and common carp, respectively and age group 4 year was dominant with 42.0, 35.9 and 43.0 percent, respectively. K value and L_∞ calculated 0.26 (/year) and 58.3 cm for Kutum and 0.15 (/year) and 61.5 cm for golden grey mullet, respectively. The total biomass and MSY estimated about 24733.7 and 8550.4 tones for kutum and about 16948.0 and 4999.0 tones for golden grey mullet, respectively. Exploitation rate (E) calculated 0.71 and 0.70 for Kutum and golden grey mullet, respectively. In 2006-2007, the exploitation of bony fishes resources started on 12 October 2006 and finished on 7 April 2007 in 2006-2007. 134 beach seines caught about 14120.0 tons of bony fishes by 48470 hauling. The total catch was estimated 23801.8 tones (Includes illegal fishery). Kutum, mullets and common carp comprised more than 98.5 percent of total catch. Length classes 39-40 and 38-39 cm predominated for kutum and common carp, respectively and length classes 27-28 and 29-30 cm predominated for golden grey mullet. Age groups 3 to 5 year comprised 80.2 and 71.8 percent for kutum and golden grey mullet, respectively and age groups 4 to 6 year comprised 71.8 percent for common carp. Age group 3, 4 and 5 year was dominant with 35.5, 32.1 and 27.1 percent for kutum, golden grey mullet and common carp respectively. K value and L∞ calculated 0.27 (/year) and 60.7 cm for Kutum, 0.2 (/year) and 58.4 cm for golden grey mullet and 0.19 (/year) and 66.7 cm for common carp, respectively. The total biomass and MSY estimated about 46654.9 and 14801.4 tones for Kutum, about 19549.0 and 5748.4 tones for golden grey mullet and about 10584.3 and 2186.0 tones for common carp, respectively. Exploitation rate (E) calculated 0.69, 0.53 and 0.52 for kutum, golden grey mullet and common carp, respectively.
    Keywords: Fisheries ; Iran ; Caspian Sea ; Bony fishes ; Kuttum ; Golden grey mullet ; Growth and mortality parameters ; Biomass ; MSY ; Common carp ; Coastal waters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 165
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 8
    facet.materialart.
    Unknown
    The effectiveness of artificial reefs for rehabilitation and production of fisheries in Iran (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25250 | 18721 | 2018-09-06 06:29:01 | 25250 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    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.
    Keywords: Aquaculture ; Iran ; Persian Gulf ; Khozestan Province ; Bushehr Province ; Artificial reefs ; Fisheries ; Marine ; Survey ; Hemispherical ; ANOVA ; CPUE ; Underwater structure
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 188
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 9
    facet.materialart.
    Unknown
    Analyzing the effects of aquaculture and rebuild aquatics stocks on fisheries development in the Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25412 | 18721 | 2018-09-23 15:56:29 | 25412 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Using SWOT analysis with traditional matrix and quantitative matrix methods, the strategies to benefit from strengths and opportunities to vanishing weaknesses and decrease of threats for strategic management of aquaculture in Iranian Northern provinces was surveyed. Utilizing researches held in fisheries research centers and existence of aquaculture experts in vicinity, activation of veterinary organization in production and post production, and entering new brood stocks with desirable growth are the main strategies for developing rainbow trout and Chinese carps culture in Iranian Northern provinces. In sturgeon fishes culture, independence of farms from fingerlings produced by governmental complex and diversification the cultured fishes using new species and hybrids can develop this part of aquaculture. Avoiding illegal fishing in sea and rivers, preserving the population of Caspian Sea fishes, entering new fish species which their resources are decreased extremely to breeding and fingerling production cycle, and using pike perch and bream while they migrate to Anzali Lagoon from Caspian Sea, instead of freshwater brood stocks will cause the output of sea enhancement and sea ranching activities to increase, and fisheries return coefficient of these fishes will rise. Using quantitative matrix and scoring method, it was defined that aquaculture in Iranian Northern provinces are extremely approved and acceptable and the score of strengths is more than weaknesses and opportunities more than threats. By using strategic management, these activities can be more developed.
    Keywords: Management ; Iran ; Caspian Sea ; Anzali Lagoon ; SWOT ; Strategic management ; Aquaculture ; Sea enhancement ; Sea ranching ; Traditional matrix ; Quantitative matrix ; Fisheries ; Survey ; Culture ; Species ; Illegal fishing
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 504
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 10
    facet.materialart.
    Unknown
    Evaluation of artemia stock in Urmia lake (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25719 | 18721 | 2018-10-10 09:44:30 | 25719 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Stock assessment of Urmia Lake Artemia between 2000-2001 revealed intense decreasing cysts and biomass compared the previous years. Reducing annual rain falling from 32 to 18 cm in west Azarbayjan province lowered fresh water entrance from 4 billion m3 to 1.8 billion m3 to the lake as in 2001 the water volume reached to 6 billion m3 . Decreasing more than 2 billion m3 water volume of the lake per year with increasing the evaporation rate and existence of 5 billion tons salt inside the lake increased water salinity from 17% (1999) to 23.3% (2001) with max- min range of 250-258 ppt without any differences between the seasons. Mean transparency measured with Sechi disk was 138 cm (maximum 215 in Autumn and minimum 51 cm in Spring). Annual mean of water temperature 15 with fluctuation of 6 in winter to 22.13 in Autumn. this study, Artemia (different life stages) and phytoplankton were sampled by planktonic net from 12 suit stations which were selected from 36 sites used in previous Artemia stock assessment project done by Gent University, 1995. Phytoplankton sample identified and counted using identifying key and microscopic study. Results showed that in winter, the number of cysts per cubic meter 756 (minimum) and 2015 (maximum) in Autumn, with annual mean of 1000.m-3. Minimum 0.7 g.m-3 biomass wet weight (without cysts) were obtain in winter while the maximum (9.22 g.m-3) was in spring. The numbers of different nauplii stages per cubic meter with range of 0.03 in winter to 9.22 in spring( mean of 2.46) and juvenile stage per cubic meter were between 0.05 in winter to 1.16 in spring( mean= 0.66). It's showed higher percentage of larval stages in spring toward to higher juvenile and adults stages in summer to mid-autumn. Only Dunaliella and Nitzschia were identified but Dunaliella was dominated ( 95% of total identified phytoplankton with higher abundance, 31000 cells.L-1 in spring season(especially in May and June). Total biomass concluding cysts in studied year was 2700 tons( 30 tons cysts and 2670 tons other biomass which with 10% harvestable biomass, 3 tons cysts and 267 tons other biomass could be harvested without any diverse effects on Artemia stock. Cysts and biomass were found more in central to southern part of the lake. The best season for cysts harvesting were Autumn follow by Spring and for biomass harvest were Summer follow by Autumn.
    Keywords: Aquaculture ; Management ; Iran ; Urmia Lake ; Artemia urmiana ; Stock assessment ; Phytoplankton ; Dunaliella ; Nitzschia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 74
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...