En
  • دکتري (2013)

    علوم و مهندسی شیلات

    دانشگاه تربيت مدرس، ایران

  • کارشناسي ارشد (2007)

    علوم و مهندسی شیلات

    دانشگاه تربيت مدرس، ایران

  • کارشناسي (2004)

    علوم و مهندسی شیلات

    دانشگاه تربيت مدرس، ایران

  • مدیریت کیفیت آب و خاک در آبزی پروری
  • کودهای زیستی و آلی در آبزی پروری
  • فیلتر های زیستی در آبزی پروری
  • مدل سازی و تحلیل روابط اکولوژیک در شبکه غذایی میکروبی و کلاسیک در اکوسیستم های آبی

    محل تولد: چمستان- نور ، رشته تحصیلی: علوم و مهندسی شیلات، گرایش تخصصی: هیدروبیولوژی ، تلفن همراه: 09113209598، پست الکترونیکی: mahmoudi.nemat@gmail.com

    ارتباط

    رزومه

    Developing a GIS-Based Decision Rule for Sustainable Marine Aquaculture Site Selection: An Application of the Ordered Weighted Average Procedure

    Elham Haghshenas, Mehdi Gholamalifard, Nemat Mahmoudi, Tiit Kutser
    Journal PapersSustainability , Volume 13 , Issue 5, 2021 January , {Pages 2672 }

    Abstract

    Fish consumption is on the increase due to the increase in growth of the global population. Therefore, taking advantage of new methods such as marine aquaculture can be a reliable source for the production of fish in the world. It is necessary to allocate suitable sites from environmental, economic, and social points of view in the decision-making process. In this study, in order to specify suitable areas for marine aquaculture by the Ordered Weighted Averaging (OWA) methodology in the Caspian Sea (Iran), efforts were made to incorporate the concept of risk into the GIS-based analysis. By using the OWA-based method, a model was provided which can generate marine aquaculture maps with various pessimistic or optimistic strategies. Eighteen mo

    Ecosystem services trade-offs informing impacts of marine aquaculture development in the southern Caspian Sea

    E Haghshenas, M Gholamalifard, N Mahmoudi
    Journal Papers , , {Pages }

    Abstract

    Glyphosate: Environmental Occurrence, Biodegradation and Alternatives for Weeds Control

    BL S. Hamidović, P. Gkorezis, A. Sunulahpašić, N. Mahmoudi
    Journal Papers , , {Pages }

    Abstract

    Spatiotemporal relationships between life stages of the invasive ctenophore, Mnemiopsis leidyi, and environmental parameters in the southern Caspian Sea

    Nemat Mahmoudi, Manoochehr Babanezhad, Jafar Seyfabadi, Mohammad Reza Ahmadi
    Journal PapersJournal of Great Lakes Research , 2020 August 12, {Pages }

    Abstract

    Spatiotemporal relationships between developmental stages (cydippid, transition and adult) of the comb jelly Mnemiopsis leidyi and environmental parameters were seasonally evaluated using the random forest (RF) model along the Iranian coasts of the Caspian Sea. The mean density of M. leidyi in spring, summer, autumn and winter were 8, 54, 130, and 15?ind?m−3, respectively. The density of various stages, particularly cydippid, showed a decreasing trend with increase in depth. Cydippids had the highest abundance with a lower percentage in the deeper layers and colder seasons. Temperature was found to be the most influential parameter on the distribution of M. leidyi’s life stages, particularly cydippids, with a stronger effect in spring a

    The sulfur cycle and hydrogen sulfide production in aquatic ecosystems with an emphasis on aquaculture

    Rana Dashtbin, Nematollah Mahmoudi, Hosein Besharati
    Journal PapersUtilization and Cultivation of Aquatics , Volume 9 , Issue 2, 2020 August 22, {Pages 105-115 }

    Abstract

    The sulfur cycle is a complex biogeochemical process in aquatic ecosystems that involved four stages of mineralization, immobilization, reduction and oxidation. In organic matter-rich aquatic ecosystems especially aquaculture ponds, half of organic matter deposited under anaerobic condition by sulfate reducing bacteria and hydrogen sulfide gas produced as by product during this process. Small concentrations of hydrogen sulfides are highly toxic to aquatic organisms and therefore its production must be avoided. On the other hand, degrade of organic matter increases the amount of nutrients (e.g., nitrogen and phosphorus) in water, thus cause eutrophication of the ecosystems. Therefore, sulfur cycle has both positive and negative effect in aqu

    Isolation and Identification of Efficient Strains of Native Sulfur Oxidizing Bacteria rom Warm-water Fish Farms in the Central Regions Mazandaran

    Rana Dashtbin, NL Mahmoudi, Hossein Besharati
    Journal PapersJournal of Sol Biology , Volume 8 , Issue 1, 2020 June 19, {Pages 41-53 }

    Abstract

    This study was aimed to isolate and identify the most efficient native bacteria from warm-water fish farms of Mazandaran that can potentially oxidize hydrogen sulfide. After sampling the sediments and sediment pore water of fish farms in Fereydunkenar, Babol, Babolsar and Sari counties, enrichment and isolation carried out in three liquid culture media of Starkey, Postgate, and H-3 to increase the number of the desired microorganisms. After isolation based on morphological difference (in the above solid culture media), 27 isolates (14 autotrophic and 13 heterotrophic isolates) were purified. Then preliminary screening was performed based on pH decrease in Starkey liquid culture media, among which only 6 isolates were selected. In the next s

    Identifying the environmental factors influencing the spatial pattern of water quality of Mazandaran coasts during winter

    Nemat Mahmoudi, Mostafa Armandeh
    Journal PapersFisheries Science and Technology , Volume 8 , Issue 3, 2019 September 10, {Pages 165-173 }

    Abstract

    Aims: The present study aimed to evaluate the spatial patterns of water quality and its controlling factors in the Mazandaran coastal ecosystem during winter using the multivariate analysis methods. Materials & Methods: Water quality parameters such as nutrients, temperature, conductivity, salinity, DO, pH, chlorophyll‐a, and turbidity were measured monthly in 16 stations (44 layers) along 4 transects (Amirabad, Babolsar, Nowshahr, and Ramsar). To evaluate the data, several multivariate statistical methods were used including discriminant function analysis, cluster and factor analysis as well as correlation test. Findings: Using cluster analysis, sampling sites are classified into four distinct groups based on the similarity in water qual

    Isolation, identification and performance of phosphatesolubilizing bacteria from warm-water fish pond in Iran.

    N Mahmoudi, M Armandeh, AF Nosratabad, B Lalevic
    Journal PapersX International Agriculture Symposium, Agrosym 2019, Jahorina, Bosnia and Herzegovina, 3-6 October 2019. Proceedings , 2019 January , {Pages 1145-1150 }

    Abstract

    see more details plays an important role in controlling primary productivity in warm-water fishponds. Concentration of water-soluble phosphate is often very low, since a large portion of soluble phosphate in fish ponds fish ponds Subject Category: Miscellaneoussee more details often bonds and forms insoluble complexes with calcium (Ca2+) and magnesium (Mg2+) in calcareous soils and with iron (Fe3+) and aluminum (Al3+) in acidic soils. Application of phosphate solubilizing bacteria phosphate solubilizing bacteria Subject Category: Organism Groups

    Isolation and identification of phosphate solubilizing bacteria from warm-water fish farms as phosphate biofertilizer candidates

    Mostafa Armandeh, Nemat Mahmoudi, Alireza Falah Nosratabad
    Journal PapersAquatics Physiology and Biotechnology , Volume 6 , Issue 4, 2019 February 20, {Pages 121-140 }

    Abstract

    The bio-availability of phosphorus for primary producers is reduced mainly due to the formation of complex with cations and organic matter in warm-water fish ponds. Therefore, the most important new approaches for increasing water-soluble phosphate that are consistent with the principles of sustainable agriculture are the use of phosphate solubilizing and mineralizing bacteria (PSB). For this purpose, sampling of the sediment of warm-water fish ponds in central regions of Mazandaran province was carried out. Isolation and identification of bacteria were performed using by National Botanical Research Institute (NBRIP) medium and 16s rRNA gene sequence. The ability of strains to grow in the range of environmental parameters of warm-water fish

    Serum Biochemical Changes and Acute Stress Response s of the Endangered Iridescent Catfish (Pangasianodon hypophthalmus) Supplied with Dietary Nucleotide

    M Yaghobi, S Dorafshan, N Mahmoudi, F Paykan Heyrati
    Journal Papers , 2018 February 2, {Pages }

    Abstract

    The effects of dietary nucleotide (NT) were evaluat ed on some serum biochemical parameters and acute stress responses of the catfish ( Pangasianodon hypophthalmus ). Five experimental diets including 0, 0.25, 0.5, 0.7 5, and 1% NT were supplied to catfish fry for 10 weeks. At the end of the experiment, fis h fed the control and 1% NT diets were subjected to handling and crowding stress. The resu lts showed that the fish supplied with 0.25-0.75% NT had a lower level of lactate dehydrogenase (LDH ) (P<0.05) while other serum enzymes including alkaline phosphatase (ALP), asparate transaminase (ASP), and alanine transaminase (ALT) were not significantly r educed by NT inclusion

    Relationship between life stages (nauplius, copepodite and adult) of Acartia tonsa with physicochemical parameters and dominant Planktonic species in Mazandaran Coasts during?…

    ZAHRA BABAEI, NEMAT MAHMOUDI, JAFAR SEYFABADI
    Journal Papers , Volume 10 , Issue 3001027, 2018 January 1, {Pages 427-434 }

    Abstract

    The relationships between life stages (nauplius, copepodite and adult) of Acartia tonsa with physicochemical parameters, and dominant planktonic species were investigated using Random Forest (RF) model along the Mazandaran Coasts during summer. Monthly sampling was conducted in 2012 along four transects (Amirabad, Babolsar, Noshahr and Ramsar) in different water layers at depths of 5, 10, 20 and 50 m. The results showed that the mean density of A. tonsa was1586 ind/m3. The spatial distribution of life stages showed that the density had decreasing trend from Ramsar, Amirabad, Babolsar to Noshahr, respectively. The density of each life stage of A. tonsa was also decreased with increase in depth and distance from the shore. Data evaluation thr

    Relationship between life stages (nauplius, copepodite and adult) of Acartia tonsa with physicochemical parameters and dominant Planktonic species in Mazandaran Coasts during …

    Z Babaei, N Mahmoudi, J Syfabadi
    Journal Papers , , {Pages }

    Abstract

    Seasonal distribution of dominant phytoplankton in the Southern Caspian Sea (Mazandaran coast) and its relationship with environmental factors

    N Mahmoudi, M Ahmadi, M Babanezhad, J Seyfabadi
    Journal PapersJournal of Marine Science and Technology , Volume 16 , Issue 1, 2017 January , {Pages 87-101 }

    Abstract

    Seasonal distribution of phytoplankton and factors affecting their presence in the Mazandaran coastal ecosystems were investigated in 2012. In this study, Distribution of the phylum and dominant species of phytoplankton and water quality parameters were evaluated along 4 transects (Amirabad, Babolsar, Noshahr and Ramsar) in the different layers of the water column at final depths of 5, 10, 20 and 50m. Variation of the dominant species and environmental parameters was analyzed using Principal Components Analysis (PCA). Average annual phytoplankton density was 318687823 cubic meters, the highest density in winter and lowest in spring was determined. Totally, 5 groups and 129 species of phytoplankton were identified, including Bacillariophyta

    APPLIED INTRODUCTION OF ECOSYSTEM SERVICE MODELING OF MARINE AQUACULTURE: APPROACH FORESTIMATION OF PRODUCTION AND NET PRESENT VALUE (NPV)

    E HAGHSHENAS, M GHOLAMALIFARD, N MAHMOUDI
    Journal Papers , Volume 26 , Issue 1, 2017 January 1, {Pages 141-153 }

    Abstract

    Marine and coastal ecosystems have many benefits and different services for humans that marine aquaculture is one of the most important of these services. Southern coast of Caspian Sea particularly Mazandaran coast have great potential for development of marine aquaculture. Now, there are 9 fish farms with different production capacities in Mazandaran coast. In this study, the growth of specie of fish Rainbow trout (Oncorhynchus mykiss) was modeled using the marine aquaculture model based on daily temperature, rate of metabolism and mortality rate. Finally calculated the harvest weight and net present value (Net Present Value: NPV) for this this specie in each farm was calculated by considering two scenarios: 1) Development and 2) BAU (Busi

    Species composition, density and biomass of Rotatoria, Protozoa and Meroplanktons in the south of the Caspian Sea (Babolsar)

    FATEMEH KARDEL, Leila Kharrazi, ABOULGHASEM ROOHI, NEMATOLLAH MAHMOUDI
    Journal Papers , Volume 7 , Issue 100457, 2017 January 1, {Pages 116-125 }

    Abstract

    In this study, species composition, density and biomass of zooplanktons including Rotatoria, Protozoa and Meroplanktons were sampled using Juday net with mesh size of 100 ? at depths of 5, 10 and 20 meters in southern Caspian Sea (Babolsar) in two seasons of cold (Feb. 2015) and warm (June 2015). This study identified Asplanchna sp. and Synchaeta sp. from Rotatoria, and Balanus sp., Pelecypoda larvae, Balanus cypris and Nereis sp. larvae from Meroplankton. Globogeria sp. was the only protozoa observed in this study. Two way ANOVA analysis showed that sampling site and season had significant effect on density and biomass of zooplankton (P< 0. 05). Duncan's multiple range test showed that the density and biomass of zooplankton groups were sig

    Applied introduction of ecosystem service modeling of marine aquaculture: Approach for estimation of production and net present value (NPV)

    E Haghshenas, M Gholamalifard, N Mahmoudi
    Journal Papers , , {Pages }

    Abstract

    Serum biochemical and non-specific immune responses of rainbow trout (Oncorhynchus mykiss) to dietary nucleotide and chronic stress

    Morteza Yousefi, Mehdi Paktinat, Nemat Mahmoudi, Amalia P?rez-Jim?nez, Seyyed Morteza Hoseini
    Journal PapersFish physiology and biochemistry , Volume 42 , Issue 5, 2016 October 1, {Pages 1417-1425 }

    Abstract

    The aim of the present study was to investigate whether supplementary nucleotide “Optimun” mitigates the adverse effects of chronic overcrowding in Oncorhynchus mykiss. Two experimental diets [control and nucleotide-supplemented (0.2?%)] and two rearing densities (10 and 30?kg?m−3) were combined to have four experimental treatments. The fish were reared for 45?days under different densities using different diets. At the end of the trial, FCR of the fish in higher density was significantly higher than those of the lower density. Nucleotide had no significant effects on growth performance and survival rate. Supplemented nucleotide significantly increased blood hematocrit, whereas it decreased serum total protein, total im

    EFFECTS OF DIETARY NUCLEOTIDE SUPPLEMENTATION ON GROWTH PERFORMANCE, SOME HEMATOLOGICAL PARAMETERS AND BODY COMPOSITION OF NILE TILAPIA (OREOCHROMIS NILOTICUS)

    ALIABAD HABIB SARSANGI, SALAR DORAFSHAN, HEYRATI FATEMEH PEYKAN, MAHMOUD HAFEZIYEH, MOHAMMAD MOHAMAMDI, NEMAT MAHMOUDI
    Journal Papers , Volume 4 , Issue 100018, 2016 January 1, {Pages 31-44 }

    Abstract

    An experiment was conducted to evaluate the effect of dietary nucleotide on growth performance and body composition of Nile tilapia (Oreochromis niloticus). Four experimental diets were formulated by using different levels of exogenous nucleotide consist of 0 (control), 0.05, 0.1, and 0.15 percent. Each diet was randomly allocated to triplicate groups of fish with initial average weight of approximately 52 g. Fish were fed on experimental diets during the 45 days of culturing period at the rate of 2-3% biomass two times per day. Results showed that some growth indices such as final weight, weight gain, daily growth rate and specific growth rate significantly increased by increasing nucleotide level, while feed conversion rate decrease by in

    Immune responses and intestinal morphology of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878), fed dietary nucleotides

    M Yaghobi, S Dorafshan, M Akhlaghi, F Paykan Heyrati, N Mahmoudi
    Journal PapersJournal of Applied Ichthyology , Volume 31 , Issue 1, 2015 January , {Pages 83-87 }

    Abstract

    The present study was conducted to evaluate the effects of dietary nucleotides (NT) on growth performance, immune responses, and intestinal morphology of striped catfish, Pangasianodon hypophthalmus. Different levels of NT (0, 0.25. 0.5, 0.75, and 1% weight per weight, WW−1) were used in the basal diet and then randomly allocated to triplicate groups of fish with an average initial weight of 1.52???0.11?g for 10?weeks. Nucleotide supplementation did not improve growth parameters significantly (P?>?0.05). Feeding fish with a NT‐containing diet significantly improved ACH50 activity and IgM levels in comparison to the control group (P?

    Intestinal microbiota of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878) fed on dietary nucleotide

    Maryam YAGHOBI, Fatemeh PAYKAN HEYRATI, Mostafa AKHLAGHI, Salar DORAFSHAN, Nemat MAHMOUDI
    Journal PapersIranian Journal of Ichthyology , Volume 1 , Issue 4, 2015 May 18, {Pages 274-280 }

    Abstract

    The aim of this study was to assess the effects of nucleotide on intestinal microbiota of striped catfish, Pangasianodon hypophthalmus. Different levels of the NT (0, 0.25. 0.5, 0.75 and 1% weight per weight, WW-1) were added to basal diet and then randomly allocated to triplicate groups of fish with average initial weight (1.52?0.11 g) for 10 weeks. At the end of the experiment, at least 10 individual fish from each treatment were used to study quantitative and qualitative analyses of bacterial flora of intestine. The bacterial flora was identified to species level where possible. Total viable bacterial counts in the intestine of the catfish ranged from 4.33?0.49? 10 4, 5.98?0.82? 10 4, 6.44?1.09? 10 4, 5.54?0.64? 10 4 and 2.65?0.46? 10 4

    دروس نیمسال جاری

    • دكتري
      مباحث نوين در تكثير و پرورش آبزيان ( واحد)
      دانشکده منابع طبیعی و علوم دریایی، گروه تكثير و پرورش آبزيان
    • كارشناسي ارشد
      كاربرد رايانه در علوم شيلاتي ( واحد)
    • كارشناسي ارشد
      مديريت كيفيت آب در آبزي پروري ( واحد)

    دروس نیمسال قبل

    • دكتري
      مديريت كيفيت آب در آبزي پروري ( واحد)
      دانشکده منابع طبیعی و علوم دریایی، گروه تكثير و پرورش آبزيان
    • دكتري
      مديريت كيفيت آب در آبزي پروري ( واحد)
    • كارشناسي ارشد
      روش تحقيق و پردازش داده ها ( واحد)
    • كارشناسي ارشد
      ميكروبيولوژي محيط هاي آبي ( واحد)
    • 1396
      ارجمند, واحد
      جداسازي، شناسايي و عملكرد باكتري‏هاي داراي توانايي آزادكنندگي فسفر از تركيبات آلي رسوبات استخرهاي پرورش ماهيان گرمابي در استان مازندران
    • 1396
      توكلي, محدثه
    • 1397
      جلالي ورنامخواستي, مينا
      داده ای یافت نشد
      داده ای یافت نشد

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