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عضویت

جستجوی مقالات مرتبط با کلیدواژه "aquaculture" در نشریات گروه "پزشکی"

جستجوی aquaculture در مقالات مجلات علمی
  • Najmeh Hadizadeh Shirazi*, Reza Kazempoor, Faranak Tehrani
    Introduction

    The present study aims to evaluate the possible amelioration of the toxic effect of Pb2+ on the liver and kidney organs of zebrafish (Danio rerio) by the probiotic strain Lactobacillus fermentum as a dietary supplement.

    Materials and Methods

    Zebrafish that had beedn treated with probiotics for 60 days were exposed to 0-1500 μg/L Pb2+ for 72h. The LC50 for the control group was determined, and biometric, histological, and antioxidant biomarkers were assessed. This included lipid peroxidation, SOD (superoxide dismutase) activity, reactive oxygen species (ROS) levels, and inflammatory response, focusing on interleukin-8 (IL-8) and interferon-gamma (IFN-γ) gene expression.

    Results

    Based on morphological analysis, the probiotic-enriched diet had no significant effect on the weight and length of zebrafish as biometric parameters. However, it reduced tissue heavy metal accumulation and mortality by 83% at 1500 μg/L Pb2+ after 72 hours of T2 treatment. Tissue damage, including hepatocyte necrosis, renal and tubular degeneration, decreased significantly in treated groups. Oxidative stress analysis revealed that probiotic treatment alleviated free radical production, SOD activity, and malondialdehyde (MDA) levels in zebrafish, allowing them to tolerate more than 300 μg/L Pb2+. In addition, probiotic-treated zebrafish showed a significant recovery in SOD2, IL-8, and IFN-γ mRNA expression, indicating an improved immune system.

    Conclusion

    In conclusion, a diet enriched with Lactobacillus fermentum reduced the oxidative stress and improved the resistance of zebrafish to the sub-lethal dose of Pb2+. Overall, Lactobacillus fermentum shows potential as a dietary supplement for aquaculture in Pb2+-contaminated areas.

    Keywords: Zebrafish, Probiotic, Oxidative Stress, Immunology, Aquaculture
  • Desmond Eseoghene Ighravwe*, Akpevweoghene Solomon Abijah, Daniel Osezua Aikhuele, Sunday Thomas Ajayi, Johnson Adeleke Adeyiga
    Background

    Several aquaculture industries in underdeveloped nations use fossil fuel-powered generators to produce electricity. This pattern has raised greenhouse gas emissions as well as the price of aquaculture products.

    Methods

    To address this issue, this study contains a bi-objective model that optimizes the parametric settings of waste-to-energy (WTE) plants for aquaculture firms: Levelized cost of energy and power expenses for reverse logistics. The best values for these objectives were created using a genetic algorithm and goal programming.

    Results

    Four planning periods were taken into account during implementation, and actual data were gathered from a Nigerian aquaculture company. The electricity costs from biodiesel ranged from N0.7541 per kW to N0.7628 per kW, respectively. Reverse logistics has energy costs ranging from N6 329 492.10 to N7 121 015.53. The proposed model produced average values for several WTE parametric parameters, including a 1.69 million kg hydrogen gas, a 59.16% hydrogen gas compression efficiency, and an 83.39% electricity conversion efficiency. Furthermore, the system had logistics’ minimum and maximum fractions of 0.18% and 21%, respectively.

    Conclusion

    Our findings demonstrated how WTE parametric parameters impact the aquaculture industry’s electrical power unit.

    Keywords: Algorithm, Aquaculture, Electricity, Hydrogen, Nigeria
  • مهرداد چراغی*، سهیل سبحان اردکانی، بهاره لرستانی، فاطمه جعفری نوبخت، لیما طیبی
    زمینه و هدف

    : رشد فزاینده جمعیت و نیاز روزافزون بشر به مواد غذایی و از طرفی، محدود بودن ذخایر طبیعی آب زیان، لزوم توجه به آبزی پروری پایدار را نمایان می سازد. بنابراین، با مکان یابی مناطق مستعد برای احداث کارگاه های تکثیر و پرورش ماهی و ارزیابی توان بوم شناختی آن عرصه ها می توان از تداخل کاربری های مختلف، به حداقل رساندن اثرات محیط زیستی آبزی پروری و جلوگیری از بروز اختلال در امر توسعه جلوگیری کرد. لذا، این پژوهش با هدف ارزیابی توان بوم شناختی استان همدان برای استقرار کارگاه های تکثیر و پرورش ماهی قزل آلای رنگین کمان (Onchorynchus mykiss) انجام شد. 

    مواد و روش ها

    مکان یابی و ارزیابی توان بوم شناختی منطقه  با تاکید بر نیازهای زیستی ماهیان سردآبی و عوامل اقتصادی- اجتماعی در راستای دستیابی به آبزی پروری پایدار و با استفاده از نقشه های 1:50000 چشمه ها، دبی آب، دمای آب، pH آب، شیب، مناطق حفاظت شده و آثار باستانی بر اساس مدل آبزی پروری مخدوم با استفاده از ویرایش 9/3 نرم افزار ArcGIS انجام یافت.

    یافته ها

    نتایج نشان داد که به طور تقریب 1420 هکتار از عرصه های شهرستان نهاوند، 571 هکتار از عرصه های شهرستان رزن، 472 هکتار از عرصه های شهرستان بهار، 311 هکتار از عرصه های شهرستان همدان، 263 هکتار از عرصه های شهرستان ملایر، 145 هکتار از عرصه های شهرستان تویسرکان، 121 هکتار از عرصه های شهرستان اسدآباد و 84 هکتار از عرصه های شهرستان کبودرآهنگ از توان بوم شناختی برای تکثیر و پرورش ماهی قزل آلای رنگین کمان برخوردار بودند.

    نتیجه گیری

    با مکان یابی و ارزیابی توان بوم شناختی عرصه های مستعد برای استقرار کارگاه های تکثیر و پرورش ماهیان سردآبی می توان ضمن رفع نیازهای فزاینده غذایی جامعه، با لحاظ کردن توان سرزمین، ضمن نیل به توسعه پایدار و درخور در به حداقل رساندن آثار سوء محیط زیستی صنعت آبزی پروری گام برداشت.

    کلید واژگان: تنش محیطی, ارزیابی توان بوم شناختی, مکان یابی, سامانه اطلاعات جغرافیایی, آبزی پروری
    Mehrdad Cheraghi*, Soheil Sobhan Ardakani, Bahareh Lorestani, Fatemeh Jafari Nobakht, Lima Tayebi
    Background

    Nowadays, the growing population has increased the demand for food especially for protein triggering the aquaculture industry's expansion. However, unplanned and unregulated farm will caused be at the subsequent yield failure and cost of environmental stress in the aquaculture farm. Accordingly, ecological potential evaluation and site selection of suitable areas for establishment of aquaculture farms can be prevent the interference of different land uses, minimize the environmental impact of aquaculture development and prevent disruptions in development. Therefore, the currentstudy was conducted to ecological potential evaluation of rainbow trout (Onchorynchus mykiss (culture as coldwater fish species in Hamedan province, west of Iran.

    Methods

    In the current study, biological requisites of rainbow trout, socioeconomic factors, springs information, water flow, water temperature, pH, slope, protected areas and antiquities were used for ecological potential evaluation and site selection of suitable sites for rainbow trout culture. In so doing, 'Makhdoum Aquaculture Model' and ArcGIS 10.3 were used.

    Results

    Based on the results obtained, 1420 ha of Nahavand county, 571 ha of Razan county, 472 ha of Bahar county, 311 ha of Hamedan county, 263 ha of Malayer county, 145 ha of Toyserkan county, 121 ha of Asadabad county and 84.0 ha of Kabudarahang county were identified as the suitable areas for establishment of rainbow trout culture farms.

    Conclusion

    Ecological potential evaluation and site selection for aquaculture by considering the land suitability could be taking to sustainable development and reduce of environmental stress of the aquaculture farm.

    Keywords: Environmental stress, Ecological potential evaluation, Site selection, Geographic information system, Aquaculture
  • مهدیه جعفری، ابوالفضل ناجی*، مسلم شریفی نیا، مسلم دلیری
    زمینه و هدف

    میکروپلاستیک ها با ورود به زنجیره غذایی آبزیان سبب آسیب به دستگاه گوارش، اختلال در چرخه تولیدمثل و در نهایت مرگ آنها می شوند. تحقیق حاضر با هدف بررسی آلودگی میکروپلاستیک در دستگاه گوارش میگوهای وانامی پرورشی در برخی از مزارع پرورش میگو در استان های بوشهر، خوزستان و هرمزگان انجام شد.

    روش بررسی

    نمونه برداری از دو مزرعه پرورش میگو در هر بندر شامل بندر ریگ در استان بوشهر، بندر چویبده در استان خوزستان و تیاب جنوبی واقع در استان هرمزگان انجام شد. تعداد 90 نمونه میگو در طول ماه های خرداد تا مهر 1399 از هر مزرعه پرورشی در مجموع 540 نمونه میگو به صورت تصادفی جمع آوری گردید. روش شناسایی میکروپلاستیک ها به وسیله دستگاه اسپکتروفتومتر FT-IR انجام شد.

    یافته ها

    بیشترین فراوانی میکروپلاستیک ها مربوط به میگوهای پرورشی در مزارع استان خوزستان با میزان 41/11 درصد بود و در استان های هرمزگان و بوشهر به ترتیب با 28/88 و 17/70 درصد میزان کمتری از آلودگی میکروپلاستیک مشاهده شد. میانگین میکروپلاستیک ها براساس تجزیه و تحلیل واریانس یک طرفه (ANOVA One-way) در دستگاه گوارش میگوی در ایستگاه های مورد مطالعه اختلاف معنی داری داشت (0/05p<). بیشترین نوع و رنگ میکروپلاستیک در دستگاه گوارش میگوهای مزارع پرورشی همه استان ها متعلق به فیبر و رنگ سیاه بود. پلی پروپیلن و پلی استایرن در میکروپلاستیک های یافت شده در دستگاه گوارش میگوها شناسایی شدند.

    نتیجه گیری

    در دستگاه گوارش برخی از میگوهای مزارع پرورشی مورد بررسی در این پژوهش شامل هر سه استان بوشهر، خوزستان و هرمزگان میکروپلاستیک مشاهده شد، بیشترین فراوانی میکروپلاستیک ها در دستگاه گوارش میگوها مربوط به مزارع پرورش استان خوزستان بود و دستگاه گوارش میگوها در استان های هرمزگان و بوشهر به ترتیب از میزان کمتری میکروپلاستیک برخوردار بودند.

    کلید واژگان: آلودگی میکروپلاستیک ها, آبزی پروری, میگوی وانامی, سلامت غذایی
    Mahdieh Jafari, Abolfazl Naji*, Moslem Sharifinia, Moslem Daliri
    Background and Objective

    Microplastics enter the food chain of aquatic animals; they cause damage to the digestive system, disruption of the reproductive cycle, and finally their death. The present study was conducted to investigate the microplastic pollution in the digestive system of Vanami shrimps cultivated in some shrimp farms in Bushehr, Khuzestan, and Hormozgan provinces.

    Materials and Methods

    Sampling was done from two shrimp farms in each port including Bandar Rig in Bushehr province, Bandar Choebdeh in Khuzestan province, and South Tiab located in Hormozgan province. 90 shrimp samples were randomly collected from each breeding farm from June to October 2019. The identification method of microplastics was done by FT-IR spectrophotometer.

    Results

    The highest frequency of microplastics related to farmed shrimps was 41.11% in the fields of Khuzestan province, and a lower amount of microplastic pollution was observed in Hormozgan and Bushehr provinces with 28.88% and 17.70%, respectively. According to one-way ANOVA, the mean of microplastics in the digestive tract of shrimp had a significant difference in the studied stations (p<0.05). The most type and colors of microplastics in the digestive system of shrimps in the farms of all provinces belonged to fiber and black color. Polypropylene and polystyrene were detected in microplastics found in the digestive system of shrimps.

    Conclusion

    Microplastics were observed in some of digestive tracts of the shrimps of the breeding farms examined in this research in all three provinces of Bushehr, Khuzestan, and Hormozgan. The highest frequency of microplastics in the digestive tract of shrimps is related to the breeding farms of Khuzestan province, and Hormozgan and Bushehr respectively have a lower amount.

    Keywords: Microplastic pollution, Aquaculture, Litopenaeus vannamei, Food health
  • Asmaa Chbel, Abdelhakim Elmakssoudi, Manuel Rey-Méndez, Juan Luis Barja, Abdelaziz Soukri, Bouchra El khalfi*
    Introduction

    The extensive use of chemicals and antimicrobial agents in aquaculture has decreased the immune mechanisms of cultivated species and promoted the emergence of drug-resistant microorganisms leading to diseases among cultivated fish, affecting consumers’ health. Thus, the investigation of natural antibacterial and anti-stress agents is crucial. In the current study, we focused on the evaluation of the potential use of essential oils (EOs) as an antioxidant and antimicrobial agents in aquaculture.

    Methods

    The EOs, obtained by hydrodistillation from clove (Syzygium aromaticum), cinnamon (Cinnamomum verum), rosemary (Rosmarinus officinalis), artemisia (Artemisia herba-alba), cedarwood (Cedrus atlantica) and oregano (Origanum compactum) were analyzed by gas chromatography/mass spectrometry (GC/MS). Their antibacterial activities were carried out against five bacteria, pathogenic to fish in aquaculture, using the well diffusion and microatmosphere methods. The pathogens used were Vibrio anguillarum, Photobacterium damselae subsp damselae, Aeromonas salmonicida, Edwardsiella tarda, and Lactococcus garvieae. Then, the minimum inhibitory and bactericidal concentrations of each EO were determined. Furthermore, the antioxidant activity was performed in vitro.

    Results

    The investigated EOs were effective against the pathogenic strains. They showed variable constituents such as phenols, sesquiterpenes, and monoterpenes. Regarding the antioxidant activity, cinnamon, clove, and oregano EOs showed their abilities to donate hydrogen to 2,2-diphenyl-1-picrylhydrazy (DPPH) radical and scavenge free radicals produced by 2,2-azino-bis-3-ethylbenzothiazoline6-sulfonic acid (ABTS), respectively.

    Conclusion

    These results gave insight into the potential use of phytobiotics in aquaculture as a safe strategy to substitute antibiotics to protect fish from oxidative stress and inhibit the emergence of drug-resistant bacteria for safer consumption of cultivated fish.

    Keywords: Medicinal plants, Aquaculture, Drug resistance, Free radical scavengers, Antibacterial activity, Health
  • A.M. Tiamiyu*, I.A. Adesina

    Primary Health Care (PHC) is expected to serve as a basis for the country's health sector, of which it is the primary responsibility and priority, as well as the community's overall collective and economic prosperity. Promotion of food supply and proper nutrition are among eight elements of PHC. Protein deficiency is one of the most important health concerns in some parts of the world. A huge numbers of malnourished or hungry people have been reported particularly in the less developed countries. Advantages of aquaculture in nutrition are varied. However, there are some zoonotic microbial illnesses occurred due to consumption of infected seafood. Some of these challenges will be cor- rected by good aquaculture practices. With the right reforms in the aquaculture industry, progress can be made toward solving some of the challenges facing PHC delivery. In this mini-review, the benefits and risks of aquaculture foods in PHC are briefly discussed.

    Keywords: Aquaculture, Fish Products, Primary Health Care, Food Security, Foodborne Diseases, Food Safety
  • Veni Bharti, Neeru Vasudeva*, Joginder Singh Dhuhan
    Purpose
    The study is aimed at finding new antibiotic therapy for aquaculture due to potential of bacteria to develop resistance to the existing therapies. Use of large quantities of synthetic antibiotics in aquaculture thus has the potential to be detrimental to fish health, to the environment and wildlife and to human health.
    Methods
    Antimicrobial potential of volatile oil and fractions of chloroform extract of Oreganum vulgare was evaluated alone and in the presence of standard antimicrobials against common fish pathogens by disc-diffusion, agar well assay and two fold microdilution method by nanodrop spectrophotometric method.
    Results
    The best results were represented by volatile oil followed by phenolic fraction by disc-diffusion, agar well and microdilution assays (Minimum inhibitory concentration). By the interaction studies, it was observed that the volatile oil and phenolic fraction were able to inhibit the pathogens at very low concentration compared to standard drugs. The fractional inhibitory concentration index (FICI) was calculated and volatile oil and phenolic fractions were found to be synergistic against Pseudomonas fluorescens and Candida albicans.
    Conclusion
    The experimental data suggests the use of volatile oil and phenolic fraction in combination with standard antimicrobials to maintain healthy aquaculture with lesser adverse effects as compared to synthetic antibiotic therapy.
    Keywords: Antibiotics, Antimicrobial resistance, Aquaculture, Fish pathogens, Minimum Inhibitory Concentration, Oreganum vulgure
نکته
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