Pub Date : 2020-09-10DOI: 10.22092/IJFS.2018.117830
Abdurahman Polat, Seval Kandemir, Bahar Tokur, G. Özyurt
Abstract Seasonal variations of proximate compositions and fatty acids of tench (Tinca tinca L., 1758) captured from Seyhan Dam Lake were investigated. The results showed that seasonal fatty acid compositions of tench fillets in July, August and November ranged from 29.59% to 33.71% saturated fatty acids (SFA), 20.50% to 21.69% monounsaturated fatty acids (MUFAs) and 26.50% to 41.85% polyunsaturated fatty acids (PUFAs). Lipid contents of tench fillets in all seasons were statistically different (p <0.05). The major fatty acids of tench sampled in different seasons were palmitic acid (16:0), stearic acid (18:0), palmitoleic acid (16:1ω7), oleic acid (18:1ω9), linoleic acid (LA, 18:2ω6), arachidonic acid (ARA, 20:4ω6), eicosapentaenoic acid (EPA, 20:5ω3) and docosahexaenoic acid (DHA, 22:6ω3). The proportions of DHA were ranged from 5.51% to 17.33%. DHA+EPA compositions of tench fillets were in the highest level as 22.47% in November. The highest ARA content was determined in November as 10.88%. The results showed that tench is a good protein and fatty acid source in human nutrition.
摘要研究了采自Seyhan Dam Lake的tench（Tinca Tinca L.，1758）的主要成分和脂肪酸的季节变化。结果表明，7月、8月和11月的tench鱼片的季节性脂肪酸组成为29.59%至33.71%的饱和脂肪酸（SFA）、20.50%至21.69%的单不饱和脂肪酸和26.50%至41.85%的多不饱和脂肪酸酯。不同季节tench鱼片的脂质含量差异有统计学意义（p<0.05），不同季节tench的主要脂肪酸为棕榈酸（16:0）、硬脂酸（18:0）、棕榈油酸（16:1ω7）、油酸（18:1ω9）、亚油酸（LA，18:2ω6）、花生四烯酸（ARA，20:4ω6），二十碳五烯酸（EPA，20:5ω3）和二十二碳六烯酸（DHA，22:6ω3）。DHA的比例在5.51%至17.33%之间。11月份，tench鱼片的DHA+EPA含量最高，为22.47%。11月测定的ARA含量最高，为10.88%。结果表明，tench是人体营养中良好的蛋白质和脂肪酸来源。
{"title":"Fatty acid composition of tench (Tinca tinca L., 1758): A seasonal differentiation","authors":"Abdurahman Polat, Seval Kandemir, Bahar Tokur, G. Özyurt","doi":"10.22092/IJFS.2018.117830","DOIUrl":"https://doi.org/10.22092/IJFS.2018.117830","url":null,"abstract":"Abstract Seasonal variations of proximate compositions and fatty acids of tench (Tinca tinca L., 1758) captured from Seyhan Dam Lake were investigated. The results showed that seasonal fatty acid compositions of tench fillets in July, August and November ranged from 29.59% to 33.71% saturated fatty acids (SFA), 20.50% to 21.69% monounsaturated fatty acids (MUFAs) and 26.50% to 41.85% polyunsaturated fatty acids (PUFAs). Lipid contents of tench fillets in all seasons were statistically different (p <0.05). The major fatty acids of tench sampled in different seasons were palmitic acid (16:0), stearic acid (18:0), palmitoleic acid (16:1ω7), oleic acid (18:1ω9), linoleic acid (LA, 18:2ω6), arachidonic acid (ARA, 20:4ω6), eicosapentaenoic acid (EPA, 20:5ω3) and docosahexaenoic acid (DHA, 22:6ω3). The proportions of DHA were ranged from 5.51% to 17.33%. DHA+EPA compositions of tench fillets were in the highest level as 22.47% in November. The highest ARA content was determined in November as 10.88%. The results showed that tench is a good protein and fatty acid source in human nutrition.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2234-2241"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49588371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-10DOI: 10.22092/IJFS.2020.122373
I. Ibrahim, S. Abdullah, A. Karim
Aeromonas hydrophila is a gram-negative bacterium which associated with gastrointestinal diseases and septicaemia. This pathogenic bacterium has several virulence factors ranging from pili to the excreted protein which called (Aerolysin) with minor and major effects, respectively. Additionally, Aeromonas hydrophila is a widely distributed bacterium that commonly causes ulcers in cyprinid fish such as carps and secondary diseases in humans as well. In the present study, characteristics and haemolytic activities of the recombinant Aerolysin protein and optimal conditions for cloning are determined using the synthesized cloning/expression Aerolysin gene, assembled into the Escherichia coli BL21 (DE3) through pGEX-6P1 vector, using SDS-PAGE and western blotting techniques. The results declared that, the Aerolysin gene (1482 bp) was cloned by transforming the recombinant pGEX-6P1 vector into Escherichia coli BL21 (DE3) as a prokaryotic expression host. The SDS-PAGE results indicated that the estimated protein size was 54 KDa. Recombinant Aerolysin protein synthesis at both selected temperatures, 25°C and 37°C, indicated that 1 mM of isopropyl-β-D-thiogalactopyranoside (IPTG) was the optimum concentration for induction. However, the recombinant protein was unable to synthesize in the absence of IPTG inducer. Western blot analysis indicated the efficient sensitivity and specificity of the recombinant Aerolysin protein. In conclusion, the recombinant protein showed potential advantages for immunoassay approaches in order to decrease the economic losses caused by disease in the aquaculture industry.
{"title":"Determination of the optimal conditions of cloning Aerolysin gene from the common carp pathogen Aeromonas hydrophila in Escherichia coli BL21","authors":"I. Ibrahim, S. Abdullah, A. Karim","doi":"10.22092/IJFS.2020.122373","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122373","url":null,"abstract":"Aeromonas hydrophila is a gram-negative bacterium which associated with gastrointestinal diseases and septicaemia. This pathogenic bacterium has several virulence factors ranging from pili to the excreted protein which called (Aerolysin) with minor and major effects, respectively. Additionally, Aeromonas hydrophila is a widely distributed bacterium that commonly causes ulcers in cyprinid fish such as carps and secondary diseases in humans as well. In the present study, characteristics and haemolytic activities of the recombinant Aerolysin protein and optimal conditions for cloning are determined using the synthesized cloning/expression Aerolysin gene, assembled into the Escherichia coli BL21 (DE3) through pGEX-6P1 vector, using SDS-PAGE and western blotting techniques. The results declared that, the Aerolysin gene (1482 bp) was cloned by transforming the recombinant pGEX-6P1 vector into Escherichia coli BL21 (DE3) as a prokaryotic expression host. The SDS-PAGE results indicated that the estimated protein size was 54 KDa. Recombinant Aerolysin protein synthesis at both selected temperatures, 25°C and 37°C, indicated that 1 mM of isopropyl-β-D-thiogalactopyranoside (IPTG) was the optimum concentration for induction. However, the recombinant protein was unable to synthesize in the absence of IPTG inducer. Western blot analysis indicated the efficient sensitivity and specificity of the recombinant Aerolysin protein. In conclusion, the recombinant protein showed potential advantages for immunoassay approaches in order to decrease the economic losses caused by disease in the aquaculture industry.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2258-2273"},"PeriodicalIF":0.9,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44987018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-01DOI: 10.22092/IJFS.2020.122495
M. Sadeghi, B. Fakheri, J. Sohrabipour, A. Emamjomeh, A. Bagheri, D. Samsampour
All Spatoglossum and Stoechospermum species in Persian Gulf and Oman Sea, Iran, have been so far identified via classical taxonomy. In this study classification of two genus of brown algae (Dictyotaceae) including Spatoglossum and Stoechospermum have been investigated. We combined the cytoplasmic DNA sequences data of plastid rbcL and psbA with morphological information. Based on the constructed phylogenetic trees on the sequences data of these two genes the collected specimens from the Iranian coastlines made two distinct clades which were grouped with two species Stoechospermum polypodioides and Spatoglossum crassum with high to full bootstrap values. So we approved the presence of Stoechospermum polypodioides and Spatoglossum crassum as new record for the algal flora of Persian Gulf in Iranian coastlines.
{"title":"Confirming the presence of two brown algae Stoechospermum polypodioides and Spatoglossum crassum as new record of Dictyotaceae in the Persian Gulf based on molecular and morphological analysis","authors":"M. Sadeghi, B. Fakheri, J. Sohrabipour, A. Emamjomeh, A. Bagheri, D. Samsampour","doi":"10.22092/IJFS.2020.122495","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122495","url":null,"abstract":"All Spatoglossum and Stoechospermum species in Persian Gulf and Oman Sea, Iran, have been so far identified via classical taxonomy. In this study classification of two genus of brown algae (Dictyotaceae) including Spatoglossum and Stoechospermum have been investigated. We combined the cytoplasmic DNA sequences data of plastid rbcL and psbA with morphological information. Based on the constructed phylogenetic trees on the sequences data of these two genes the collected specimens from the Iranian coastlines made two distinct clades which were grouped with two species Stoechospermum polypodioides and Spatoglossum crassum with high to full bootstrap values. So we approved the presence of Stoechospermum polypodioides and Spatoglossum crassum as new record for the algal flora of Persian Gulf in Iranian coastlines.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2560-2572"},"PeriodicalIF":0.9,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44152999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-22DOI: 10.22092/IJFS.2020.122060
L. Yazdanpanah-Goharrizi, Farokh Rokhbakhsh-Zamin, M. J. Zorriehzahra, N. Kazemi-Pour, B. Kheirkhah
The isolation of Aeromonas hydrophila from Oncorhynchus mykiss reared in the farms was the aim of the present study. Ninety samples were collected aseptically from the infected fish with signs of hemorrhagic septicemia in gill and skin, exophthalmia, dropsy and 36 water samples were sub-cultured on Tryptic Soya Agar (TSA), as well as kidney. The genotyping by PCR method was used to amplify the gene of 16 SrDNA using primers 27F and 1492R as primer pairs to achieve an approximate length of 1500 bp. The identified motile Aeromonas species were sequenced with electrogram chromas format in chrome version 1/41 software and a phylogenetic tree was drowned by MEGA5.1 software. The results showed that 19% of 24 isolated from gram-negative bacteria were detected as Aeromonas, which the sequencing results revealed that all the isolated bacteria had 99% similarities with the standard A. hydrophila. The results of environmental factors showed when the levels of dissolved oxygen have decreased and the levels of nitrite and ammonia have increased throughout the year, Aeromonasias is increased. Also, when the water has gone alkaline due to increased ammonia, the disease has increased. It may be concluded that fish farmers should take proper management practices to avoid such disease in cultured fishes especially rainbow trout and to get rid of the infection by such serious bacterial pathogen like Aeromonas hydrophila by improving their culture strategy and culture ecosystem.
{"title":"Isolation, biochemical and molecular detection of Aeromonas hydrophila from cultured Oncorhynchus mykiss","authors":"L. Yazdanpanah-Goharrizi, Farokh Rokhbakhsh-Zamin, M. J. Zorriehzahra, N. Kazemi-Pour, B. Kheirkhah","doi":"10.22092/IJFS.2020.122060","DOIUrl":"https://doi.org/10.22092/IJFS.2020.122060","url":null,"abstract":"The isolation of Aeromonas hydrophila from Oncorhynchus mykiss reared in the farms was the aim of the present study. Ninety samples were collected aseptically from the infected fish with signs of hemorrhagic septicemia in gill and skin, exophthalmia, dropsy and 36 water samples were sub-cultured on Tryptic Soya Agar (TSA), as well as kidney. The genotyping by PCR method was used to amplify the gene of 16 SrDNA using primers 27F and 1492R as primer pairs to achieve an approximate length of 1500 bp. The identified motile Aeromonas species were sequenced with electrogram chromas format in chrome version 1/41 software and a phylogenetic tree was drowned by MEGA5.1 software. The results showed that 19% of 24 isolated from gram-negative bacteria were detected as Aeromonas, which the sequencing results revealed that all the isolated bacteria had 99% similarities with the standard A. hydrophila. The results of environmental factors showed when the levels of dissolved oxygen have decreased and the levels of nitrite and ammonia have increased throughout the year, Aeromonasias is increased. Also, when the water has gone alkaline due to increased ammonia, the disease has increased. It may be concluded that fish farmers should take proper management practices to avoid such disease in cultured fishes especially rainbow trout and to get rid of the infection by such serious bacterial pathogen like Aeromonas hydrophila by improving their culture strategy and culture ecosystem.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2422-2436"},"PeriodicalIF":0.9,"publicationDate":"2020-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44312469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-10DOI: 10.22092/IJFS.2018.119856
U. Enyidi, E. Etim
The use of plant proteins in substituting fishmeal (FM) is mitigated by several anti nutritional factors (ANF) like phytic acid, non starch polysaccharides and protease inhibitors. Fermentation of the plant ingredients can reduce the ANF and improve feed utilization and growth rate of fish. We produced five isonitrogenous and isocaloric diets using solid state fermented bambaranut meal (BNM). Fermented BNM substituted FM in diets of African catfish Clarias gariepinus. The FM: BNM inclusion percentages of the diets were, F1, 50:5; F2, 35:20; F3, 20:35; F4, 5:50 and F5, 0:56. There was a control feed labelled as F6. Feed F6 was a variant of F1 but with non fermented BNM. Fingerling African catfish C. gariepinus with average weight 5.14±0.05 g were fed with the diets for 56 days. Specific growth rate (SGR) was best for the catfish fed with F1, 7.82±0.25 % day-1, followed by those fed with F6, 7.35±0.24 % day-1. There were, however, no differences in SGR of F2, 7.26±0.18 % day-1 and F6. The food conversion ratio was lowest and best for the catfish fed with F1, 1.24±0.19 and F2 1.34±0.06. The growth and nutritional performance of fish fed with F2 were as good as F1 and cost-effective. Feeds made from fermented BNM had better FCR than those from raw BNM. Fermentation increased the protein and amino acid content of the BNM and the catfish gained more weight than from raw BNM. The effects of ANF seem to be highly reduced in solid-state fermented BNM thereby enhancing catfish growth.
{"title":"Use of solid state fermented bambara nut meal as substitute of fishmeal in the diets of African catfishClarias gariepinus","authors":"U. Enyidi, E. Etim","doi":"10.22092/IJFS.2018.119856","DOIUrl":"https://doi.org/10.22092/IJFS.2018.119856","url":null,"abstract":"The use of plant proteins in substituting fishmeal (FM) is mitigated by several anti nutritional factors (ANF) like phytic acid, non starch polysaccharides and protease inhibitors. Fermentation of the plant ingredients can reduce the ANF and improve feed utilization and growth rate of fish. We produced five isonitrogenous and isocaloric diets using solid state fermented bambaranut meal (BNM). Fermented BNM substituted FM in diets of African catfish Clarias gariepinus. The FM: BNM inclusion percentages of the diets were, F1, 50:5; F2, 35:20; F3, 20:35; F4, 5:50 and F5, 0:56. There was a control feed labelled as F6. Feed F6 was a variant of F1 but with non fermented BNM. Fingerling African catfish C. gariepinus with average weight 5.14±0.05 g were fed with the diets for 56 days. Specific growth rate (SGR) was best for the catfish fed with F1, 7.82±0.25 % day-1, followed by those fed with F6, 7.35±0.24 % day-1. There were, however, no differences in SGR of F2, 7.26±0.18 % day-1 and F6. The food conversion ratio was lowest and best for the catfish fed with F1, 1.24±0.19 and F2 1.34±0.06. The growth and nutritional performance of fish fed with F2 were as good as F1 and cost-effective. Feeds made from fermented BNM had better FCR than those from raw BNM. Fermentation increased the protein and amino acid content of the BNM and the catfish gained more weight than from raw BNM. The effects of ANF seem to be highly reduced in solid-state fermented BNM thereby enhancing catfish growth.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"1889-1910"},"PeriodicalIF":0.9,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46308687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-10DOI: 10.22092/IJFS.2018.119688
K. Nematzadeh, N. Ahmadifard, N. Samadi, N. Agh, Serwe Ghaderpoor
The survival and larval growth of marine fish in mass production are affected by the nutritional value of live feeds such as rotifers, thus many studies have been conducted to develop effective methods for the enrichment of live feeds with mineral, essential fatty acids and vitamins. In this study, the effect of zinc-threonine enriched yeast on growth factors and mineral composition of rotifer was investigated. For this purpose, rotifers in four groups including: 1) yeast without enrichment (the control), 2) yeast contain 18.22 mg.g-1 of zinc 3) yeast contain 23.76 mg.g-1 of zinc and 4) yeast contain 46.15 mg.g-1 of zinc were cultured for 10 days. Total rotifer and egg number, on a daily basis were assayed. Mean of specific growth rate and egg ratio of the rotifer B. plicatilis were calculated. Changes in the amount of four element (Zn, Cu, Fe and Mn) of rotifer fed with different treatments were also studied. Based on results, zinc-threonine enriched yeast with 46.15 mg.g-1 of zinc-threonine significantly (P<0.05) improved growth and body composition of rotifers. Maximum number of rotifers and eggs were respectively 219.3±2.0 and 30.3±11.0 number.ml-1. The maximum egg ratio and SGR is related to the treatment of 23.76 mg.g-1 and 46.15 mg/g of zinc, respectively. Highest amount of zinc in treatment 4 was 19.54.73±0.99 mg.g-1 (wet weight of rotifer). Also the amount of Cu in treatment 4 was significantly higher than other groups. Conversely, by increasing zinc content, iron and manganese levels were significantly decreased (P<0.05). In conclusion, zinc-threonine enriched yeast could improve the growth, reproduction and body composition of marine rotifers, Brachionus plicatilis.
{"title":"Zinc-threonine enriched yeast improved the growth and mineral composition of marine rotifer, Brachionus plicatilis","authors":"K. Nematzadeh, N. Ahmadifard, N. Samadi, N. Agh, Serwe Ghaderpoor","doi":"10.22092/IJFS.2018.119688","DOIUrl":"https://doi.org/10.22092/IJFS.2018.119688","url":null,"abstract":"The survival and larval growth of marine fish in mass production are affected by the nutritional value of live feeds such as rotifers, thus many studies have been conducted to develop effective methods for the enrichment of live feeds with mineral, essential fatty acids and vitamins. In this study, the effect of zinc-threonine enriched yeast on growth factors and mineral composition of rotifer was investigated. For this purpose, rotifers in four groups including: 1) yeast without enrichment (the control), 2) yeast contain 18.22 mg.g-1 of zinc 3) yeast contain 23.76 mg.g-1 of zinc and 4) yeast contain 46.15 mg.g-1 of zinc were cultured for 10 days. Total rotifer and egg number, on a daily basis were assayed. Mean of specific growth rate and egg ratio of the rotifer B. plicatilis were calculated. Changes in the amount of four element (Zn, Cu, Fe and Mn) of rotifer fed with different treatments were also studied. Based on results, zinc-threonine enriched yeast with 46.15 mg.g-1 of zinc-threonine significantly (P<0.05) improved growth and body composition of rotifers. Maximum number of rotifers and eggs were respectively 219.3±2.0 and 30.3±11.0 number.ml-1. The maximum egg ratio and SGR is related to the treatment of 23.76 mg.g-1 and 46.15 mg/g of zinc, respectively. Highest amount of zinc in treatment 4 was 19.54.73±0.99 mg.g-1 (wet weight of rotifer). Also the amount of Cu in treatment 4 was significantly higher than other groups. Conversely, by increasing zinc content, iron and manganese levels were significantly decreased (P<0.05). In conclusion, zinc-threonine enriched yeast could improve the growth, reproduction and body composition of marine rotifers, Brachionus plicatilis.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"1840-1849"},"PeriodicalIF":0.9,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47570167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-10DOI: 10.22092/IJFS.2019.119009
P. Taban, A. Abdoli, N. Khorasani, J. Aazami
This is the first study with the greatest number of multimetric indices calculated in Iran to assess water quality at Jajrood and Karaj protected rivers. Given the point that these rivers supply a large portion of Tehran's drinking water, the present study aims at determining ecological quality of these rivers based on a suitable biotic index among these indices. Physicochemical and macro-invertebrate samples were collected with three replications during three consecutive years from 19 stations with a Surber sampler. In the Jajrood River, macroinvertebrates with 6667 abundance belong to 22 families and in the Karaj River, macro-invertebrates with 13,246 abundance belong to 24 families have been identified. The most appropriate time for sampling is in summer because of the existence maximum abundance and diversity of macroinvertebrates. The results of CCA have been shown physicochemical parameters TSS, EC, pH, and BOD have the most effect on the distribution of macroinvertebrates. Among the 16 biotic indices, the FBI index in Karaj River and the BMWP/ASPT index in the Jajrood River are the most reliable indices for assessing the water quality. The results showed that point pollution sources (orchards, restaurants and villages) and nonpoint sources (tourism activities and recreational area) have the most negative impact on the ecosystem of these two rivers. Results of water quality assessment have been shown the changes in ecological quality of water due to human activities; therefore, it is necessary to increase control and management of pollutant sources to improve the water quality of these two rivers.
{"title":"Assessment the effects of physiochemical parameters on water ecological quality using indices based on macro-invertebrates communities in the Karaj and Jajrood Rivers","authors":"P. Taban, A. Abdoli, N. Khorasani, J. Aazami","doi":"10.22092/IJFS.2019.119009","DOIUrl":"https://doi.org/10.22092/IJFS.2019.119009","url":null,"abstract":"This is the first study with the greatest number of multimetric indices calculated in Iran to assess water quality at Jajrood and Karaj protected rivers. Given the point that these rivers supply a large portion of Tehran's drinking water, the present study aims at determining ecological quality of these rivers based on a suitable biotic index among these indices. Physicochemical and macro-invertebrate samples were collected with three replications during three consecutive years from 19 stations with a Surber sampler. In the Jajrood River, macroinvertebrates with 6667 abundance belong to 22 families and in the Karaj River, macro-invertebrates with 13,246 abundance belong to 24 families have been identified. The most appropriate time for sampling is in summer because of the existence maximum abundance and diversity of macroinvertebrates. The results of CCA have been shown physicochemical parameters TSS, EC, pH, and BOD have the most effect on the distribution of macroinvertebrates. Among the 16 biotic indices, the FBI index in Karaj River and the BMWP/ASPT index in the Jajrood River are the most reliable indices for assessing the water quality. The results showed that point pollution sources (orchards, restaurants and villages) and nonpoint sources (tourism activities and recreational area) have the most negative impact on the ecosystem of these two rivers. Results of water quality assessment have been shown the changes in ecological quality of water due to human activities; therefore, it is necessary to increase control and management of pollutant sources to improve the water quality of these two rivers.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"1871-1888"},"PeriodicalIF":0.9,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41851996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-10DOI: 10.22092/IJFS.2018.117911
M. Z. Nasab, S. Jamili, A. Valipour, S. Fatemi, E. R. Fard
The growth of the gastrointestinal tract of the larvae and juvenile of Alburnus chalcoides was studied after histological analysis using light microscopy, haematoxylin-eosin staining and the mouth development was scanned via electron microscopy. This study focuses on the morphology and histology of the mouth growth and digestive tract of A. chalcoides larvae to test the best weaning time for providing practical diet for fry based on the grade of their morphological aspects. It was observed that on the fifth day after hatching, the larvae mouth was opened. On the eighth day, the yolk sac was absorbed by two-thirds. On the same day, food is fed manually. Yolk sac was completely absorbed in 10th day. The histological base of the esophagus was formed by day 3. At day 3, the formation of enterocytes started. Also, the larvae hepatopancreas was formed on 5th day. According to the results, it was observed that after 8 days onwards, larvae of these fish can have a proper diet. At this day, the size of the mouth was 84 µm. when the lips were formed within 20 days and for the mouth angles 45oand 90o, the food size for mouth, was 168 and 307 μm, respectively.
{"title":"Ontogenetic development of the digestive system in Alburnus chalcoides larvae and juveniles","authors":"M. Z. Nasab, S. Jamili, A. Valipour, S. Fatemi, E. R. Fard","doi":"10.22092/IJFS.2018.117911","DOIUrl":"https://doi.org/10.22092/IJFS.2018.117911","url":null,"abstract":"The growth of the gastrointestinal tract of the larvae and juvenile of Alburnus chalcoides was studied after histological analysis using light microscopy, haematoxylin-eosin staining and the mouth development was scanned via electron microscopy. This study focuses on the morphology and histology of the mouth growth and digestive tract of A. chalcoides larvae to test the best weaning time for providing practical diet for fry based on the grade of their morphological aspects. It was observed that on the fifth day after hatching, the larvae mouth was opened. On the eighth day, the yolk sac was absorbed by two-thirds. On the same day, food is fed manually. Yolk sac was completely absorbed in 10th day. The histological base of the esophagus was formed by day 3. At day 3, the formation of enterocytes started. Also, the larvae hepatopancreas was formed on 5th day. According to the results, it was observed that after 8 days onwards, larvae of these fish can have a proper diet. At this day, the size of the mouth was 84 µm. when the lips were formed within 20 days and for the mouth angles 45oand 90o, the food size for mouth, was 168 and 307 μm, respectively.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"2159-2172"},"PeriodicalIF":0.9,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42930914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-10DOI: 10.22092/IJFS.2019.119278
Mortaza Zarei, M. Fatemi, M. Mortazavi, Sharareh Pour ebrahim, J. Ghoddousi
The economic growth of aquaculture and the dependence of a large growing population on coastal resources have led to coastal degradation and reduced resources. In this paper while realizing the potential capacities of the island systems, the aquaculture activities of the island are specially discussed in the framework of Integrated Coastal Zone Management (ICZM). Therefore, in this study, firstly, the internal strategic factors (strengths and weaknesses) and external factors (opportunities and threats) of the environment were identified. Thereafter, Analytic Network Process (ANP) and Super Decision Software in SWOT matrix were used to evaluate and prioritize these factors, as well as to develop several proposed strategies. Using a designed network model, the proposed strategies were weighted and the main strategies of the evaluation matrix were ranked. In this study, the Qeshm Island as the largest island in the Persian Gulf was identified as the study area. The results showed that the most efficient strategies to optimal development of aquaculture use of coastal areas of Qeshm Island are using objectives, policies, and plans of aquaculture and aquatic hunting to build and strengthen sustainable aquaculture in the region, build and strengthen comprehensive aquaculture plans for conservation of natural marine resources in the framework of ICZM, create and develop infrastructure facilities and aquaculture infrastructure in order to create optimum use of the lands, allocate adequate funding to achieve conservation programs and user development of aquaculture and environmental protection involved in (ST) strategies.
{"title":"Strategic planning for optimal development of aquaculture in coastal areas of Qeshm Island","authors":"Mortaza Zarei, M. Fatemi, M. Mortazavi, Sharareh Pour ebrahim, J. Ghoddousi","doi":"10.22092/IJFS.2019.119278","DOIUrl":"https://doi.org/10.22092/IJFS.2019.119278","url":null,"abstract":"The economic growth of aquaculture and the dependence of a large growing population on coastal resources have led to coastal degradation and reduced resources. In this paper while realizing the potential capacities of the island systems, the aquaculture activities of the island are specially discussed in the framework of Integrated Coastal Zone Management (ICZM). Therefore, in this study, firstly, the internal strategic factors (strengths and weaknesses) and external factors (opportunities and threats) of the environment were identified. Thereafter, Analytic Network Process (ANP) and Super Decision Software in SWOT matrix were used to evaluate and prioritize these factors, as well as to develop several proposed strategies. Using a designed network model, the proposed strategies were weighted and the main strategies of the evaluation matrix were ranked. In this study, the Qeshm Island as the largest island in the Persian Gulf was identified as the study area. The results showed that the most efficient strategies to optimal development of aquaculture use of coastal areas of Qeshm Island are using objectives, policies, and plans of aquaculture and aquatic hunting to build and strengthen sustainable aquaculture in the region, build and strengthen comprehensive aquaculture plans for conservation of natural marine resources in the framework of ICZM, create and develop infrastructure facilities and aquaculture infrastructure in order to create optimum use of the lands, allocate adequate funding to achieve conservation programs and user development of aquaculture and environmental protection involved in (ST) strategies.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"1728-1748"},"PeriodicalIF":0.9,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46953502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-10DOI: 10.22092/IJFS.2018.118925
A. Raghavendra, R. Jaswal, K. Hemaprasanth, C. Soumya
The efficacy of neem (Azadiracta indica) against Lernaea cyprinacea was studied. Two types of neem seeds powder, viz; (1) dried and powdered neem seeds and (2) solvent extracted neem seeds powder prepared by treating dried seeds powder with petroleum ether were used in the present study. These experiments were carried out in the month of August 2014. Different types of extracts were prepared by separately solubilising both types of neem` seeds powder in i) 1% NaCl solution and (ii) water at two temperatures (28 oC and 90oC). These extracts were tested at varying concentrations (10, 25, 50 and 100 µg mL-1) against Lernaea. Results indicated that neem seeds powder treated with solvent and further solubilized with hot water (90 oC) at a concentration of 100 µg mL-1 was effective in preventing the hatching of L.cyprinacea eggs and their further development. Nauplii and copepodid-I stages were also exposed to above mentioned neem seed extracts at a concentration of 100µg mL-1. Nauplii became inactive within 2 hrs and copepodids died after 43 minutes exposure to solvent treated neem`s powder extracted with hot water. Fishes (Labeo fimbriatus) survived for an average period of 5 and 30 min in all types of neem seeds extracts except the one extracted with water at 28oC (both solvent treated and untreated neem`s seeds powder).
{"title":"Efficacy of neem seed extracts on developmental stages of Lernaea cyprinacea","authors":"A. Raghavendra, R. Jaswal, K. Hemaprasanth, C. Soumya","doi":"10.22092/IJFS.2018.118925","DOIUrl":"https://doi.org/10.22092/IJFS.2018.118925","url":null,"abstract":"The efficacy of neem (Azadiracta indica) against Lernaea cyprinacea was studied. Two types of neem seeds powder, viz; (1) dried and powdered neem seeds and (2) solvent extracted neem seeds powder prepared by treating dried seeds powder with petroleum ether were used in the present study. These experiments were carried out in the month of August 2014. Different types of extracts were prepared by separately solubilising both types of neem` seeds powder in i) 1% NaCl solution and (ii) water at two temperatures (28 oC and 90oC). These extracts were tested at varying concentrations (10, 25, 50 and 100 µg mL-1) against Lernaea. Results indicated that neem seeds powder treated with solvent and further solubilized with hot water (90 oC) at a concentration of 100 µg mL-1 was effective in preventing the hatching of L.cyprinacea eggs and their further development. Nauplii and copepodid-I stages were also exposed to above mentioned neem seed extracts at a concentration of 100µg mL-1. Nauplii became inactive within 2 hrs and copepodids died after 43 minutes exposure to solvent treated neem`s powder extracted with hot water. Fishes (Labeo fimbriatus) survived for an average period of 5 and 30 min in all types of neem seeds extracts except the one extracted with water at 28oC (both solvent treated and untreated neem`s seeds powder).","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":"19 1","pages":"1864-1870"},"PeriodicalIF":0.9,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41600456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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