Aliakbar Hedayati

Aliakbar Hedayati
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Aliakbar verified their affiliation via an institutional email.
Verified
Aliakbar verified their affiliation via an institutional email.
Gorgan University of Agricultural Sciences and Natural Resources | GAU · Department of Fisheries Science

Professor
Professor of Marine Biology at GUASNR

About

233
Publications
47,180
Reads
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2,806
Citations
Introduction
S. A. Hedayati is currently working as Professor in the Faculty of Fisheries and Environmental Scienes, Gorgan University of Agricultural Sciences and Natural resources Gorgān, Golstan, Iran. He worked as an invited visiting scholar at CRIAcq, University of Federico II (Italy), and Stockholm University (Sweden). He has authored more than 160 peer-reviewed journal articles. His research interest is aquatic toxicology and the effects of pollution on aquatic ecosystems and organisms.
Additional affiliations
September 2011 - present
Gorgan University of Agricultural Sciences and Natural Resources
Position
  • Professor
February 2006 - June 2010
Khorramshahr University of Marine Science and Technology
Position
  • PhD Student
January 2011 - March 2020
Gorgan University of Agricultural Sciences and Natural Resources
Position
  • Professor (Associate)
Education
March 2010 - October 2010
University of Naples Federico II
Field of study
  • University Centre for Innovation and Development in Food Industry Aquaculture Centre
September 1999 - June 2003
Isfahan University of Technology
Field of study
  • Fisheries Sciences

Publications

Publications (233)
Article
Full-text available
Gorgan Bay is located along the southeast Caspian Sea and surrounded with significant agricultural and urban areas. Plastic pollution is a significant issue that affects aquatic ecosystems globally. The accumulation and degradation of plastics into microplastics in aquatic ecosystems highlight the importance of studying them to assess pollution ris...
Article
Full-text available
The widespread presence of microplastics (MPs) in freshwater systems as an emerging environmental pollutant has caused a global environmental problem. The present study investigates the distribution and abundance of source pathway and abundance of microplastics in surface sediment samples from rivers discharging into the Gorgan Bay, southeast of th...
Article
Reducing the negative impact of environmental and stressful factors is a crucial step in achieving sustainable aquaculture. Therefore, a study was aimed at evaluating the impacts of Coenzyme Q10 (CoQ10) supplementation on growth, relative gene expression of Growth Hormone (GH) and Insulin-like growth factor-1 (IGF-1), liver and kidney histopatholog...
Article
Full-text available
Reducing the negative impact of environmental and stressful factors is a crucial step in achieving sustainable aquaculture. Therefore, a study was aimed at evaluating the impacts of Coenzyme Q10 (CoQ10) supplementation on growth, relative gene expression of Growth Hormone (GH) and Insulin-like growth factor-1 (IGF-1), liver and kidney histopatholog...
Article
Full-text available
The advancement of nanotechnology and the widespread use of nanoparticles (NPs) in various industries have highlighted the importance of studying the potential harmful effects of nanomaterials on organisms. This study aimed to evaluate the lethal toxicity thresholds of Copper Oxide Nanoparticles (CuO-NPs). The investigation focused on examining the...
Article
Full-text available
Monitoring wetlands and especially their coastlines due to recording their periodic changes gives us a better understanding of the management of these areas. Remote sensing data and satellite images are one of the reliable sources for studying and interpreting changes in wetlands. In this study, Landsat images (TM-OLI) of 2007 and 2018 were examine...
Article
Full-text available
Bioactive peptide-based drugs have gained exceeding attention as promising treatments for infectious and oxidative-stress-related diseases, are exacerbated by the advent and spread of various multidrug-resistant bacteria and industrial lifestyles. Fish skin mucus has been recognized as a potential source of bioactive peptides, providing the first l...
Article
Full-text available
Background and Objective: With the development of nanotechnology and materials science, however, these materials also have been used increasingly with the potential toxic effects of many unknown substances and many nano-particles were built with new properties and new despite. Therefore, in this study the effects of feeding with different sources o...
Article
Full-text available
In this study, the magnetic photocatalyst Scendesmus/Fe 3 O 4 /TiO 2 was synthesized, and its sonophotocatalytic properties in relation to the degradation of the Red195 dye were evaluated. Particles were characterized using a scanning electron microscope (SEM), Fourier's transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and a...
Article
Full-text available
In this study, an attempt was made for the first time to synthesize novel biophotocatalyst Cygnea/Fe3O4/TiO2 -based oyster shell (Andonata Cygnea). Different analyzes, including Fourier transform infrared spectroscopy (FESEM), High-resolution transmission electron microscopy (HRTEM), Energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XR...
Article
Full-text available
Due to the lack of natural supply of clean water, the increasing population growth, the ever-increasing expansion of the discharge of industrial units and the pollution of surface and underground water sources, the use of salt water desalination systems and the sea water has increased, which despite the many benefits, and the environmental effects...
Article
The widespread use of produced metal oxide nanoparticles (NPs) has increased major concerns about their impact on human as well as aquatic animal health. The present study shows that exposure to different concentrations of zinc oxide (ZnO) NPs led to high accumulations of Zn ions in the metabolic organs of fish (liver and gills), resulting in sever...
Preprint
Full-text available
Bioactive peptide-based drugs have gained exceeding attention as promising treatments for infectious and oxidative-stress-related diseases, are exacerbated by the advent and spread of various multidrug-resistant bacteria and industrial lifestyles. Fish skin mucus has been recognized as a potential source of bioactive peptides, providing the first l...
Article
Full-text available
Copper is widely used in agriculture and aquaculture due to its high disinfection properties and relatively low cost. However, the increase in copper concentration due to evaporation can lead to water reservoir pollution, which can harm the health of consumers. The present study aimed to determine the role of sulfated polysaccharides (SPs) extracte...
Article
Full-text available
The rapid and continuous development of shrimp farming has probably led to a series of harmful developments for the environment and human health. The destruction of mangrove forests, the blooming of harmful algae in coastal waters and shrimp breeding ponds, the introduction of non-native species, the depletion of aquatic resources and the reduction...
Article
Full-text available
Monitoring of coastal ecosystems is of particular importance for sustainable development and environmental management. Remote sensing, using satellite imagery, can play an important role in these studies. In this study, changes of qualitative parameters in Gomishan wetland and Gorgan Bay located in the southeast of the Caspian Sea were investigated...
Article
Full-text available
Just recently, heavy metals have been dramatically detected in aquatic animals, especially in fishes; hence, documented method to assess their health risks for humans who eat these contaminated fishes could be helpful. For the sake of this aim, the health risk assessment of four heavy metals including arsenic, cadmium, lead, and copper in three mai...
Article
Full-text available
Shrimp farming increases the nutrients, especially nitrogen in the water resources reducing water quality. This study was conducted to evaluate the nitrogen dynamics in white shrimp (Litopenaeus vannamei) farms and the role of artificial lagoon (24 ha) in reducing nitrogen levels in Gomishan coastal wetland, the eastern Caspian Sea. The results ind...
Article
Full-text available
A 60-day feeding trial was performed to assess the dietary effect of Lactobacillus casei as a probiotic supplement on some serum biochemical parameters and liver histopathology in common carp fry after exposure to iron oxide nanoparticles (IoNPs). Six treatments were prepared as follow: Control (no IoNPs exposure and no dietary probiotic), P6: 106...
Article
Full-text available
Synthetic hydrogels have been replaced by natural hydrogels due to their properties such as being long-lasting, more capacity for water absorption, high strength, and resistance. Recently, hydrogels have been defined as two- or multi-component systems consisting of three-dimensional networks of polymer chains that fill the space between macromolecu...
Article
The effect of 0, 70, 80, and 100% levels of extruded feed on biochemical and hematological indices of rainbow trout (Oncorhynchus mykiss) was studied at 480 fries with an average weight of 90±5 g in the form of a completely randomized design. 16 fish were randomly collected from each treatment at the middle and end of the 90-s experiment. According...
Article
Full-text available
Morphology and feature selection are key approaches to address several issues in fisheries science and stock management, such as the hypothesis of admixture of Caspian common carp (Cyprinus carpio) and farmed carp stocks in Iran. The present study was performed to investigate the population classification of common carp in the southern Caspian basi...
Article
Full-text available
Oxygen concentration is known as one of the limiting factors in aquaculture production. The present study aimed to evaluate the effects of vitamin E and zinc (Zn) on the metabolic rate and some growth indices in common carp Cyprinus carpio exposed to chronic low oxygen levels. So, 495 fingerling fish with an average weight of 15.38 ± 1.23 g were ra...
Article
Full-text available
A survey was conducted to evaluate heavy metal accumulation in edible fishes caught from Gorgan Bay, as a part of the Caspian Sea ecosystem. Fish samples including mullet, roach, and common carp were just randomly prepared from fishing locations in three different areas of Gorgan Bay including estuary, channel, and Miankale wetland twice the fishin...
Article
Full-text available
This study was carried out to evaluate dietary effect of beet molasses on immunity indices of common carp treated with titanium oxide nanoparticles TiO2-NPs. 250 fish were distributed in four treatments containing 0, 0.5%, 1% and 2% molasses and fed for 42 days, then fish were exposed to TiO2-NPs during a 14-day. At the end of experiment, hematolog...
Article
Full-text available
Understanding the population structure and level of genetic diversity of wild populations is fundamental for appropriate stock management and species conservation. The common carp (Cyprinus carpio) is one of the most important bony fish throughout the Southern coastline of the Caspian Sea, but captures of this species have seen a dramatic reduction...
Article
Full-text available
Concerns about the negative effects of microplastics (MPs) on human health have led to increasing attention to the occurrence of MPs in the aquatic environment. Recent studies have focus on the spatio-temporal distribution of MPs in rivers for residential and agricultural areas. Qarasu River Basin, watershed to Gorgan Bay, is the site of many perma...
Article
Full-text available
Nowadays, pollution of aquatic ecosystems with heavy metals is one of the most important environmental challenges due to toxicity, stability, and bioaccumulation in the environment. Heavy metals accumulate in aquatics and plant tissues and can eventually threaten human health by transmission into the food chain. For this reason, in the present stud...
Article
Full-text available
The present study investigated the effect of feeding common carp with Lactobacillus probiotic supplement on growth, blood indices, and immunity of serum and mucus exposed to cadmium. A total of 250 common carp with an average weight of 15 ± 0.62 were divided into three groups: fish without probiotics, and fish with two levels of probiotic. At the e...
Preprint
Full-text available
Natural hydrogels have replaced synthetic hydrogels due to their properties such as long life, high water absorption capacity, high strength and resistance. Recently, hydrogels have been defined as two- or multi-component systems consisting of three-dimensional networks of polymer chains that fill the space between macromolecules, and the efficienc...
Preprint
Full-text available
Concerns about the negative effects of MPs on human health have led to increasing attention to the occurrence of MPs in the aquatic environment. Recent studies have focus from the marine environment to inland waters, particularly the spatio-temporal distribution of MPs in rivers for residential and agricultural area. Qarasu river basin, watershed t...
Article
Full-text available
Prebiotic and probiotic supplements can directly activate fish primary defense mechanisms by acting on responsible receptors. This study aimed to investigate the effect of using Pediococcus acidilactici and Agaricus bisporus separately and in combination with silver carp’s mucosal immune system indices and finally the possibility of reducing the to...
Article
Full-text available
Background and Aim: The sediment monitoring in the aquatic environments is very important in terms of long-term exposure to various pollutants. This study was conducted to monitor the pollution of some heavy metals (Cd, Cu, Fe, Pb, and Zn) in the surface sediments of the Anzali wetland. Materials and methods: For this purpose, the sediment samples...
Article
Full-text available
Background and Objective: Due to the increasing use of nano-materials, especially nano silver because of the anti-bacterial inevitable is used in various industries, it will entry into the ecosystems, so in this study, the toxic response of nano silver on goldfish was studied. Material and Methodology: To determine the toxicity of nano-silver, O.E....
Article
Full-text available
In this study, the environmental monitoring of Anzali international wetland (based on water surface temperature (WST), chlorophyll-a (Chl-a) and transparency (secchi disk depth (SDD)) parameters) using Landsat images in the period 1985–2018 has been studied. Based on the results of zoning maps, in 2018 and 2013, WST fluctuations are higher, with th...
Article
Determining trophic condition of a wetland is an important step in scientific assessment of the aquatic ecosystem. High levels of nitrogen and phosphorus, is mainly the result of human activities in agriculture, industry, etc. Increasing levels of nutrients result in eutrophication of water ecosystems. Regarding the importance of Anzali internation...
Article
Full-text available
Background: In wastewater treatment, removal of phosphate and ammonia is of great importance. Chitosan is a copolymer, which can be applied in low-cost adsorption. Thus, in this study, chitosan and activated carbon nanocomposite adsorbents were prepared to remove organic pollutants from the fish farm effluents. Methods: This study was performed at...
Conference Paper
Full-text available
Golestan is located in southeast of the Caspian Sea basin. The province has over 21,000 square kilometers, 1.2% of the total area of the country and 11.7% of the area of the Caspian Sea basin formed and includes: Atrak-Sofla watershed, GorganRood, Qara Su, East of Gorgan Gulf, Neka-rood Olya. Since these province had two completely different ecosys...
Article
Concerns about the negative effects of microplastics on human health have led to increasing attention to the occurrence of microplastics in the aquatic environments. Recent studies have focus from the marine environment to inland waters, particularly the spatio-temporal distribution of microplastics in rivers. Qarasu basin, leading to Gorgan Bay, i...
Article
Full-text available
Due to the importance of Nile tilapia in the aquaculture sector, the present study aimed to evaluate the adverse impacts of the polystyrene microparticles (PS-MPs) on inflammation, immune, and antioxidative responses. For this reason, fish were exposed to waterborne PS-MPs at two sizes (9 μm and 0.35 μm) beside the control group for 28 days. Regard...
Article
Full-text available
The present study conducted on evaluating the effects of feeding with molasses along with exposure to copper nanoparticles (CuO-NP) on blood, serum and mucus immunity indices of Cyprinus carpio. The results showed that the blood indices, serum and mucus immunity enhanced significantly compare to the control group (P < 0.05). CuO-NP is a compound wi...
Article
Todays, with the industrialization of human societies, pollution of aquatic ecosystems with plastics derivativeare a serious concern, affecting the life of their organisms. The present study was conducted to investigate the size effects of micro-plastic, polystyrene on some physiological lesions of the goldfsh, Carassius auratus. Fish were exposed...
Article
Full-text available
The original version of this article unfortunately contained a typo in university name in second affiliation. The correct affiliation is Department of Aquatic Production and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resource, Gorgan, Iran
Article
Urgent is growing to have reliable information from the country's water resources. In recent years, data mining models such as artificial neural network (ANN), gene expression programming, Bayesian network, machine algorithms, such as a support vector machine (SVM), and Random Forest have found widespread use in the field of simulation and predicti...
Article
Full-text available
In this study, The effect some growth factors of Common carp (Cyprinus carpio) of feeding with different sources of zinc and iron (Nano-particles) was investigated. For this purpose, 420 specimens (with an initial average weight of 7.4 ± 45 g) were prepared. Fishes were sterilized and adapted to the laboratory conditions for 10 days. Then, fish wer...
Article
Concerns about the negative efects of microplastics (MPs) on human health have led to increasing attention to the occurrence of MPs in the aquatic environment. Recent studies have focus on the spatio-temporal distribution of MPs in rivers for residential and agricultural areas. Qarasu River Basin, watershed to Gorgan Bay, is the site of many perman...
Article
Full-text available
The use of silver nanoparticles for biomedical activities, air and water purification, food production, cosmetics, clothing and household products is very common. Due to their high stability, these compounds have a high potential for entering aquatic ecosystems and accumulating in sediments, water, and animal and plant tissues. The end result of th...
Article
The quantitative and qualitative study of wetland ecosystems is the main base for their sustainable use. In arid and semi-arid regions such as Iran, importance of wetlands is more obvious. Providing new information of changes in wetlands during several decades help us finding the reasons of alteration and making programs and policies. One of the mo...
Article
Inland waters, such as wetlands, are considered to be sensitive ecosystems, and sustainable productivity can only be achieved by adopting an appropriate environmental approach. Estimating water quality parameters using models will reduce costs and provide faster access to water resources management. In this study, a 32-year support vector machine (...
Article
Full-text available
The application of nanoparticles in various industries has grown significantly in recent years. The aims of this study were evaluation effects of silver nanoparticles (AgNPs) on survival rate and tissues (Gills) of Guppy (Poecilia reticulate) as a model of the freshwater organism. For this purpose, 90 mature fish were exposed to a different level o...
Article
Full-text available
The wide use of nano-sized metallic materials could result in the release of these particles into the environment. In addition, due to the dissolution of these nano-materials, some of the adverse effects could result from the dissolved metals. On the other hand, dietary supplements play a key role in improving the immunity of consumers; hence, the...
Article
Microplastic is releaseing to the aquatic environment worldwide, so they considered as a global issue and appeare to be widespread in all level of aquatic ecosystems and reveal serious threats to biota. Since they are often ingested by living organisms, the major concern is their transferring from lower trophic level to higher trophic level through...
Article
Full-text available
Use of Landsat is of importance in monitoring and assessment of long-term changes of water quality in freshwater ecosystems, especially in small water bodies. In this study, over a 32-year period (1985–2017), the changes in water surface temperature (WST), secchi disk transparency (SDT), and chlorophyll-a (Chl-a) concentration were estimated at the...
Article
A celluelose aerogel containing safe and environmentally-friendlly crosslinkers (carboxy methyl cellulose/citric acid) was used to purify aquaculture wastewater through removing nitrate, nitrite, and phosphate compounds. The results showed that the produced aerogel has a specific surface area of 300 m/g, the density of 0.004 g/cm³ and porosity of 9...
Article
Background: In recent years, the issue of the entry of non-native species into aquatic ecosystems has been noticed in many parts of the world. This can be considered as one of the most important indicators in the assessment of environmental vulnerabilities. Unfortunately, in recent decades Anzali international wetland has faced an expansion of Azol...
Article
As of natural constraints, and the specific climate of Iran, as well as the increasing importance of international water resources in the socio‐economic development of societies, studies on surface water resources, especially wetlands, merit special attention. Accordingly, the TM, ETM+ and OLI satellite images of 1985, 2000 and 2018 were used in th...
Article
Full-text available
Aquaculture operations produce high volumes of wastewater containing suspended solids and nutrients such as phosphorus and nitrogen. Treatment of water effluent from fish production ponds is essential for sustain environment. So, the present study was conducted to evaluate simultaneous use of microalgae and iron oxide nanoparticles (NPs) to purify...
Article
Full-text available
An annual survey of benthos fauna in a river can provide accurate information on contamination levels for other researchers. According to the entering of municipal and agricultural wastewater into the Gorganroud River, the purpose of this study was a determination of the composition, abundance, and diversity of the benthic communities in this river...
Article
Full-text available
This study was conducted to remove contaminations from fish farms effluents using iron oxide nanoparticles in a laboratory system. For this purpose, a 5-liter semi-industrial reactor has designed with a mixer blade, a porous plate, and a compressor. The results showed that the levels of nitrate, nitrite, phosphate, ammonium, TDS, TSS, and BOD were...
Article
Full-text available
Phytoplankton and algae are as the first level of the food chain and food producers for other organisms in the aquatic environment. These organisms acquire their nutrients in the process of photosynthesis (N and P) from the aquatic environment. In this study, the amount of purified fish wastewaters was studied by microalgae (Chlorella vulgaris) in...
Article
In studies of surface and underground water resources management, contamination and their spread are very important issues in areas affected by the source of contamination. One of the environmental impacts of land-used change is its direct impact on surface water quality; therefore, it is investigated that how would landscape characteristics and la...
Article
In studies of surface and underground water resources management, contamination and their spread are very important issues in areas affected by the source of contamination. One of the environmental impacts of land-used change is its direct impact on surface water quality; therefore, it is investigated that how would landscape characteristics and la...
Article
Aims Monitoring and zoning of water resources are one of the important principles in environmental planning and management. Therefore, considering the issues raised and the importance of Anzali wetland monitoring, the assessment of effective factors in zoning (GIS) along with TSI p, TSI n, and NSFWQI indices and the study of land use effects justif...
Conference Paper
Full-text available
When pesticides are present in high concentrations in the environment causing irreparable, metabolic, physiologic and structural damage on the organisms. Diazinon and Deltamethrin are of the most widely used agricultural pesticides in the northern Iran that can enter aquatic ecosystems. River fishes like common carp have most reactions with polluta...