Статті в журналах з теми "Recirculated aquaculture systems"
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1
PETRE, A. A., N. A. VANGHELE, MM STANCIU, A. MATACHE, DUMITRU BOGDAN MIHALACHE, and MARIAN DOBRE. "RESEARCH REGARDING THE EQUIPMENT USED IN WATER TREATMENT PROCESSES OF RECIRCULATING AQUACULTURE SYSTEMS." "Annals of the University of Craiova - Agriculture Montanology Cadastre Series " 51, no. 2 (December 20, 2020): 443–54. http://dx.doi.org/10.52846/aamc.2021.02.53.
Анотація:
Modern aquaculture technologies are made with the help of recirculation systems, which require the use of innovative and highperformance solutions for the treatment of recirculated water. Aquaculture recirculation is essentially a technology for growing and developing fish or other aquatic organisms by reusing water for more intensive fish production. The technology is based on the use of mechanical and biological filters, and this ecological method can be implemented for any species cultivated in aquaculture, such as fish, shrimp, mussels, etc. The scientific paper presents a brief summary of the control and solution of the main problems faced by water recirculation systems.
2
Thelma D. Palaoag, Marvin D. Mayormente, Minerva M. Fiesta,. "Improving Abiotic Stress Mitigation via Predictive Modeling of Water Quality Parameters in Recirculated Aquaculture Systems." Journal of Electrical Systems 20, no. 3s (April 4, 2024): 1382–89. http://dx.doi.org/10.52783/jes.1515.
Анотація:
A sustainable aquaculture solution can be provided by Recirculated Aquaculture Systems or RAS, nevertheless, Abiotic stress factors can negatively impact aquatic organisms' growth and well-being. This study’s purpose is to demonstrate how Random Forests machine learning method helps to develop a predicting model that can aid in forecasting and in the mitigation of abiotic stressors in Recirculating Aquaculture Systems by regulating water quality influences.
The study used the historical data on water quality, such as temperature, dissolved oxygen, pH, ammonia, and TDS levels in constructing a Random Forest-based predictive model. Based from the results reveal, the developed prediction model using random forests machine learning method was 90% accurate in making prediction and improved abiotic stress in RAS.
Understanding the complex relations between water quality indicators and abiotic stress variables in RAS is crucial for identifying major abiotic stress drivers and developing effective models for forecasting water quality parameters, which results in real-time insights and actionable information for making proactive decisions and employing adaptive management techniques.
Furthermore, RAS improves aquaculture productivity while reducing environmental impacts, which results in increased productivity, resource utilization, and system performance. This study makes a vital contribution to the aquaculture sector by proposing a data-driven method to improve the control of water quality parameters in RAS and, eventually, raise the sustainability and effectiveness of Recirculating Aquaculture Systems
3
Кravchenko, І., А. Кucheruk, and А. Mruk. "Weight and linear parameters of juveniles of coregonids (Coregoninae) grown in conditions of recirculated aquaculture systems." Ribogospodarsʹka nauka Ukraïni., no. 4(54) (December 28, 2020): 68–77. http://dx.doi.org/10.15407/fsu2020.04.068.
Анотація:
Purpose. Determining the growth dynamics of whitefish juveniles in conditions of recirculated aquaculture systems to current needs of industrial aquaculture of Ukraine. Methodology. The work was performed in accordance with generally accepted guidelines used for coregonid rearing in industrial aquaculture. The study was conducted in a specialized farm for whitefish breeding - "Lavaretus" LLC. Findings. Weight and linear growth during the period of cultivation in controlled conditions of whitefish young-of-the-year were characterized by dynamics, which were generally close to that typical for coregonids. The study included four coregonid species with different feeding types. Planktivorous (peled), bentivorous (whitefish), polyphagous species that is able to feed on various food organisms (muksun) and peled/broad whitefish hybrid. Feeding regime: during the transition to the mixed feeding was carried out 48 times a day (14 hours with an interval of 15 and 30 minutes) manually; further, according to an increase in fish weight was reduced to 4 times a day using automatic feeders. The average weight and length of young-of-the-year grown in a recirculating aquaculture system was: - peled – 5.6 ± 0.4, muksun – 10.1 ± 0.6.9, Baltic whitefish – 8.6 ± 1.2 g, peled/broad whitefish hybrid – 7.9 ± 0.2 g. The coefficient of variability of weights were: peled – 40.4%, muksun – 32.2%, Baltic whitefish – 21.1%, peled/broad whitefish hybrid – 41.9%. Originality. New data on piscicultural-biological parameters and dynamics of growth of juveniles of various coregonids or cultivation in conditions of a recirculating aquaculture system were obtained. Practical value. The development of whitefish farming technology in RAS conditions, which, in contrast to salmon cultivation, is only at the initial stage of implementation, so obtained data will be the basis for the development of whitefish culture in Ukraine. Key words: recirculating aquaculture system, young-of-the-year, coregonids, length-weight parameters, rearing.
4
Klausen, M. M., and O. Grønborg. "Pilot scale testing of advanced oxidation processes for degradation of geosmin and MIB in recirculated aquaculture." Water Supply 10, no. 2 (April 1, 2010): 217–25. http://dx.doi.org/10.2166/ws.2010.246.
Анотація:
The presence of geosmin and 2-methylisoborneol (MIB) in recirculated aquaculture systems has a significant negative impact on the fish production due to poor flavour quality of produced fish and increased risk of rejection by fish processers. Advanced Oxidation Processes has a high potential for removal of geosmin and MIB in water and in this study UV/H2O2 and UV/O3 has been tested in pilot scale in real aquaculture process water. First order degradations constants were between 0.6 (UV/O3) and 1.2 (UV/H2O2) h−1 for geosmin and 1.3 (UV/O3)–1.5 (UV/H2O2) h−1 for MIB. This corresponded to average half-lives between 34–69 minutes for geosmin and between 28–32 minutes for MIB. These values were one order of magnitude higher than previously reported for degradation of geosmin and MIB in demineralised and tap-water. The slower degradation rates were caused by competitive and inhibitive processes from the water matrix. The influence of the water matrix also caused increased energy consumption with EEO values 16 to 38 times higher than previously reported for geosmin and MIB removal in tap water. Improved feasibility of removing geosmin and MIB in recirculated aquaculture systems by AOPs requires pre-treatment to minimize the impact of the water matrix on the degradation kinetics.
5
Boley, A., and W. R. Müller. "Denitrification with polycaprolactone as solid substrate in a laboratory-scale recirculated aquaculture system." Water Science and Technology 52, no. 10-11 (November 1, 2005): 495–502. http://dx.doi.org/10.2166/wst.2005.0728.
Анотація:
A denitrification system based on the biodegradable polymer Poly-ɛ-Caprolactone (PCL) was tested in a laboratory-scale recirculated aquaculture system with eels in comparison to a reference system without denitrification. The experiments were conducted with fluidized bed reactors in two parallel systems to examine the feasibility and performance of the process and to observe the condition of fishes by measuring weight gain during the test-period. The most evident effect of the system with denitrification was the low nitrate concen-tration compared with the untreated reference system. A further advantage was the stability of the pH in the systems with denitrification whereas pH of the untreated water decreased due to nitrification. All over the test-period the eels showed a similar weight gain in both systems.
6
Boley, A., G. Korshun, S. Boley, V. Jung-Schroers, M. Adamek, D. Steinhagen, and S. Richter. "A new reactor for denitrification and micro-particle removal in recirculated aquaculture systems." Water Science and Technology 75, no. 5 (December 27, 2016): 1204–10. http://dx.doi.org/10.2166/wst.2016.596.
Анотація:
A ‘membrane-denitrification’ reactor (MDR) was developed and tested in a semi-technical recirculation aquaculture system in comparison to a double – without MDR – as reference system. The MDR consisted of a reactor with an ultrafiltration membrane unit for removal of micro-particles (e.g. sludge flocs, bacteria and parasites). Specific carrier material provided surfaces for biofilm growth in a fluidized bed reactor with ethanol as carbon source for denitrification. The continuous motion of these carriers cleaned the membrane surface. With online and laboratory measurements of water parameters and operational data the feasibility of the concept was verified. An advantage is that no chemicals are needed to clean the membranes. Examinations of the fish and water analyses proved an MDR can positively influence cortisol, as a stress marker, and the microflora of the aquatic system.
7
Boley, A., W. R. Müller, and G. Haider. "Biodegradable polymers as solid substrate and biofilm carrier for denitrification in recirculated aquaculture systems." Aquacultural Engineering 22, no. 1-2 (May 2000): 75–85. http://dx.doi.org/10.1016/s0144-8609(00)00033-9.
8
Blonç, Manuel, Jennifer Lima, Joan Carles Balasch, Lluis Tort, Carlos Gravato, and Mariana Teles. "Elucidating the Effects of the Lipids Regulators Fibrates and Statins on the Health Status of Finfish Species: A Review." Animals 13, no. 5 (February 22, 2023): 792. http://dx.doi.org/10.3390/ani13050792.
Анотація:
The most documented fibrates are gemfibrozil, clofibrate and bezafibrate, while for statins, the majority of the published literature focuses on atorvastatin and simvastatin. The present work reviews previously published research concerning the effects of these hypocholesterolaemic pharmaceuticals on fish, with a particular focus on commercially important species, commonly produced by the European aquaculture industry, specifically in recirculated aquaculture systems (RAS). Overall, results suggest that both acute and chronic exposures to lipid-lowering compounds may have adverse effects on fish, disrupting their capacity to excrete exogenous substances, as well as both lipid metabolism and homeostasis, causing severe ontogenetic and endocrinological abnormalities, leading to hampered reproductive success (e.g., gametogenesis, fecundity), and skeletal or muscular malformations, having serious repercussions on fish health and welfare. Nonetheless, the available literature focusing on the effects of statins or fibrates on commonly farmed fish is still limited, and further research is required to understand the implications of this matter on aquaculture production, global food security and, ultimately, human health.
9
Donoso-Bravo, Andres, Francoise Bindels, Patrick A. Gerin, and Alain Vande Wouwer. "Anaerobic biodegradability of fish remains: experimental investigation and parameter estimation." Water Science and Technology 71, no. 6 (February 4, 2015): 922–28. http://dx.doi.org/10.2166/wst.2015.047.
Анотація:
The generation of organic waste associated with aquaculture fish processing has increased significantly in recent decades. The objective of this study is to evaluate the anaerobic biodegradability of several fish processing fractions, as well as water treatment sludge, for tilapia and sturgeon species cultured in recirculated aquaculture systems. After substrate characterization, the ultimate biodegradability and the hydrolytic rate were estimated by fitting a first-order kinetic model with the biogas production profiles. In general, the first-order model was able to reproduce the biogas profiles properly with a high correlation coefficient. In the case of tilapia, the skin/fin, viscera, head and flesh presented a high level of biodegradability, above 310 mLCH4 gCOD−1, whereas the head and bones showed a low hydrolytic rate. For sturgeon, the results for all fractions were quite similar in terms of both parameters, although viscera presented the lowest values. Both the substrate characterization and the kinetic analysis of the anaerobic degradation may be used as design criteria for implementing anaerobic digestion in a recirculating aquaculture system.
10
Danish, Mir Sayed Shah, Tomonobu Senjyu, Najib Rahman Sabory, Mahdi Khosravy, Maria Luisa Grilli, Alexey Mikhaylov, and Hemayatullah Majidi. "A Forefront Framework for Sustainable Aquaponics Modeling and Design." Sustainability 13, no. 16 (August 19, 2021): 9313. http://dx.doi.org/10.3390/su13169313.
Анотація:
Aquaponics systems and technologies are growing primary industries in many countries, with high environmental and socio-economic advantages. Aquaponics is a closed-loop system that produces aquatic animals and plants in a new way using recirculated water and nutrients. With a growing world population expected to reach 9.7 billion by 2050, food production sustainability is a primary issue in today’s world agenda, and aquaponics and aquaculture systems can be potential contributors to the challenge. Observing the climate changes and global warming’s impact on the ecosystem, decreasing aqua animal stocks, and responding to increasing demand are turning points in the sustainability era. In the past 15 years, fish production has doubled, thus denoting that aquaponics transforms into commercial scales with a revolutionized production, high efficiency, and fewer resources’ utilization, thus requiring proper operation and management standards and practices. Therefore, this study aims to shape a new framework for sustainable aquaponics modeling and utilization as the all-in-one solution platform covering technical, managerial, socio-economic, institutional, and environmental measures within the suitability requirements. The proposed model in this study offers a systematic approach to the design and implementation of sustainability-efficient aquaponics and aquaculture systems. Through an exhaustive coverage of the topic, this research effort can be counted as a practical reference for researchers, scholars, experts, practitioners, and students in the context of aquaponics and aquaculture studies.
11
Villarroel, Morris, Genaro C. Miranda-de la Lama, Rafael Escobar-Álvarez, and Rubén Moratiel. "Fish Welfare in Urban Aquaponics: Effects of Fertilizer for Lettuce (Lactuca sativa L.) on Some Physiological Stress Indicators in Nile Tilapia (Oreochromis niloticus L.)." Water 14, no. 6 (March 17, 2022): 935. http://dx.doi.org/10.3390/w14060935.
Анотація:
The combination of hydroponics and aquaculture, or aquaponics, normally requires adding fertilizer to recirculated water to ensure optimal plant growth, but the effect of that fertilizer on fish welfare has not been studied in detail, especially for small urban and coupled aquaponic systems. In this study, a commercial fertilizer was placed in two small aquaponic systems (less than 250 liters each) to test its effect on the stress levels of Nile tilapia (Oreochromis niloticus) compared to controls without any fertilizer. Fish production parameters were not significantly different between treatments, nor were physiological indicators of fish stress (plasma cortisol, glucose, and triglycerides). On the other hand, lettuce growth (leaf and root weight and length) was up to three times higher in the treatment that received fertilizer.
12
Hanif, Iik Muslihul, Irzal Effendi, Tatag Budiardi, and Iis Diatin. "The recirculated aquaculture system (RAS) development with nanobubble application to improve growth performance of grouper fish fry culture." Jurnal Akuakultur Indonesia 20, no. 2 (December 1, 2021): 181–90. http://dx.doi.org/10.19027/jai.20.2.181-190.
Анотація:
One of the aquaculture commodities with high economic value is grouper fish (Epinephelus sp.). RAS is known as one of superior and suitable aquaculture systems in juvenile fish culture. RAS installed with NBs is expected to increase the stocking density and production of hybrid brown-marbled grouper. This study aimed to analyze the system performance of grouper fish juvenile culture in high stocking density with water exchange system, RAS, and combination of RAS and NBs. This study used a factorial design with two factors, namely different stocking densities and cultivation systems. The densities were 500, 600 and 700 fish/m3, while the treatment systems were RAS without NBs, RAS installed with NBs, and control treatment with 200% water change. Each treatment was replicated three times. The total aquaria used for this study were 27 as each size was 1.5 m × 0.5 m × 0.5 m. The study results showed that the RAS installed with NBs and a stocking density of 600 fish/m2 showed the best results on fish production performance.
Keywords: density, growth, grouper, nanobubble, RAS
ABSTRAK
Pendederan ikan kerapu meripakan salah satu segmen dalam usaha budidaya ikan kerapu (Epinephelus sp.). Salah satu sistem akuakultur yang cocok yang dapat digunakan dalam pendederan ikan kerapu ini adalah sistem recirculated aquaculture system (RAS). RAS dengan instalasi nanobubble (NBs) ini diharapkan bisa meningkatkan padat tebar dan kinerja produksi benih ikan kerapu. Penelitian ini bertujuan untuk menganalisis kinerja sistem pendederan ikan kerapu dengan padat tebar tinggi berbasis sistem pergantian air, RAS, dan perpaduan antara RAS dan NBs. Rancangan percobaan yang digunakan dalam penelitian ini adalah faktorial dengan dua faktor, yaitu padat tebar dan sistem budidaya berbeda. Padat tebar yang digunakan adalah 500, 600, dan 700 ekor/m3, sedangkan sistem budidaya terdiri dari RAS tanpa NBs, RAS dengan NBs dan kontrol (sistem pergantian air 200%), setiap perlakuan terdiri dari atas tiga ulangan. Hasil penelitian menunjukkan bahwa pendederan menggunakan RAS dengan NBs dengan padat tebar 600 ekor/m2 menunjukkan kinerja produksi ikan kerapu yang terbaik.
Kata kunci: ikan kerapu, kepadatan, nanobubble, pertumbuhan, RAS
13
Teixeira, Denis Leocádio, Augusto Souza, Guilherme de Souza Moura, and Maurício Cezar Resende Leite Júnior. "Reuse of aquaculture wastewater treated in constructed wetlands." Revista Engenharia na Agricultura - Reveng 29 (November 22, 2021): 347–54. http://dx.doi.org/10.13083/reveng.v29i1.12465.
Анотація:
Water reuse in fish farming is a practice that has been spreading significantly, therefore requiring more efficient and vigorous treatment systems. The objective of this study was to evaluate the potential reuse of aquaculture wastewater after being treated in horizontal subsurface flow constructed wetlands (HSSF-CW). Three HSSF-CWs with dimensions of 1.0 m in width, 3.0 m in length, and 0.30 m in depth were evaluated. One HSSF-CW had stargrass (Cynodon nlemfuensis) cultivated; the other had cattail (Typha latifolia), and the third was used as a control, where there was no cultivation. The wastewater was provided from three Nile tilapia breeding tanks, which recirculated the entire system after going through the HSSF-CW. The following variables were determined every five days at the HSSF-CW influent and effluent: temperature, pH, turbidity, electrical conductivity, redox potential, dissolved oxygen, ammonium, and nitrate. The treatment in the HSSF-CW allowed the reuse of aquaculture wastewater as it provides water quality levels according to the recommendation for Nile tilapia breeding. Furthermore, the water quality parameters monitored in HSSF-CW effluent remained within limits established by CONAMA Resolution No. 357/2005 for aquaculture and fishing activity.
14
Gendel, Youri, and Ori Lahav. "A novel approach for ammonia removal from fresh-water recirculated aquaculture systems, comprising ion exchange and electrochemical regeneration." Aquacultural Engineering 52 (January 2013): 27–38. http://dx.doi.org/10.1016/j.aquaeng.2012.07.005.
15
Gherman, Vasile Daniel, Vily Marius Cimpoiasu, Ioana Corina Moga, and Radu Popa. "Conservation of Aquatic Ecosystems by Constraining Nitrogen Pollution through Aquaculture Effluents." International Journal of Conservation Science 14, no. 3 (September 15, 2023): 1107–26. http://dx.doi.org/10.36868/ijcs.2023.03.21.
Анотація:
Recirculated aquaculture systems (RAS) have increased in preponderance in producing fish and shrimp protein. Yet, the economic sustainability of constraining RAS from negatively impacting aquatic ecosystems remains challenging. The future of RAS agriculture will eventually be settled by the relationship between water treatment costs and the impacts on downstream ecosystems. We present a user-friendly simulator of the costs of the treatment of water from RAS farms. This open-source freeware accounts for consumables and energy needed to protect the fish stock from ammonia and nitrite distress, as well as the cost of effluent treatments for specific nitrogen emission targets. This simulation platform uses information inflows about a RAS farm's layout, filters’ performance, toxicity limits, and operational costs. It monitors the budget of water, ammonium, ammonia, nitrite, and nitrate, as well as the cumulative costs of management decisions for controlling nitrogen inorganics. In combination with local environmental regulations, such an assessment is essential for making business projections that correspond with acceptable impacts on downstream ecosystems. This simulator helps determine whether a specific RAS farm is both financially sound and environmentally sustainable. Such analyses are key to constraining pollution in the surrounding ecosystems and contributing to the conservation of biodiversity.
16
Marín-Moraga, José A., Jonathan Chacón-Guzmán, Mauricio Méndez-Venegas, Ronny A. Hernández-Mora, and Jorge Cortés. "Ex situ culture of coral species Porites lobata (Scleractinia: Poritidae) and Pocillopora damicornis (Scleractinia: Pocilloporidae), Costa Rica: first assessment and implications." Revista de Biología Tropical 71, S1 (May 2, 2023): e54926. http://dx.doi.org/10.15517/rev.biol.trop..v71is1.54926.
Анотація:
Introduction: Coral reefs worldwide-decline has prompted coral restoration as a viable strategy to rewild vulnerable, foundational coral species. Stony corals are now propagated by the thousands in both in-water and ex situ (land-based) coral nurseries, the latter being unexplored in Costa Rica, despite their potential benefits as a reef management tool.
Objective: To analyze the viability of ex situ culturing of the Pacific reef-building corals Porites lobata and Pocillopora damicornis at Parque Marino del Pacífico (PMP), Puntarenas, Costa Rica, aquaculture facilities. Methods: From May to October 2018 a total of 180 coral fragments were kept in an aquaculture recirculated system. Survival, growth, and fragment yield in relation to culture medium (physicochemical parameters) were recorded.
Results: Survival and growth rate varied between species and culture tanks. On average, surviving P. lobata fragments (68.89 %) placed in Tank 1 (T1) grew 216 %, while fragments placed in Tank 2 (T2) had a survival rate of 71.11 % and an increase of 277 % in live tissue area. P. damicornis fragments survival, basal and crown area percentage increase were: 71.11 %, 980 % and 366 % in T1, and 100 %, 976 % and 287 % in T2. Although fragments survival and growth were net positive, the yield in terms of culture was low, due to culture conditions in the tanks not meeting coral culture optimal requirements.
Conclusions: Survival and growth of both species varied depending on the tank in which they were placed. Survival was similar to that found in other ex situ studies and growth was similar to those reported in the wild, however culture performance in terms of yield was low. Aquaculture systems at PMP constitute a good base for the cultivation of corals, however for the culture effort to achieve maximum yield, current systems must be optimized according to the requirements of the target coral species.
17
Sidonie Koco, Nobah Celine, Koffi Kouakou Barthelemy, and Kouakou Affoue Constantine. "Bibliographic Review of Aquaponic Systems and their Relevance to Côte d’Ivoire, a Sub-Saharan African Country." European Scientific Journal, ESJ 20, no. 12 (April 29, 2024): 63. http://dx.doi.org/10.19044/esj.2024.v20n12p63.
Анотація:
Through a review of aquaponic techniques, the present work highlights the interest aroused by this practice in the world as well as different modes of exploitation. Aquaponics is defined as a coupling between a recirculated aquaculture compartment and an aboveground crop compartment. Since two decades, it has been the subject of a significant economic activity in Canada, the USA, Australia and induces numerous research activities. This system is subdivided into three (3) major techniques which are the culture techniques on bed of inert substrates, on nutritive film and that of rafts. Aquaponics is the subject of profitable industrial economic activity on both large and small scale in the USA and Canada. Given the benefits of low water consumption, then on-use of fertilizers and pesticides, aquaponics is unquestionably according to researchers and users, the system capable of revolutionizing livestock farming and agriculture around the world. Côte d'Ivoire is suffering not only from the consequences of climate change but also from rapid urbanization, with the consequent change in water resources. Aquaponics deserves to be mastered then popularized in this country, to help produce fish and plants of better quality while avoiding the waste of water caused by traditional livestock systems.
18
Amoussou, Nellya, Thomas Lecocq, Camille Fourrier, Renaud Nivelle, Clémentine Fleck, Pascal Fontaine, Alain Pasquet, and Marielle Thomas. "A multi-trait evaluation framework to assess the consequences of polyculture in fish production: An application for pikeperch in recirculated aquaculture systems." Aquaculture Reports 27 (December 2022): 101349. http://dx.doi.org/10.1016/j.aqrep.2022.101349.
19
Amoussou, Nellya, Marielle Thomas, Alain Pasquet, and Thomas Lecocq. "Finding the Best Match: A Ranking Procedure of Fish Species Combinations for Polyculture Development." Life 12, no. 9 (August 26, 2022): 1315. http://dx.doi.org/10.3390/life12091315.
Анотація:
Polyculture is a potentially interesting rearing practice for future aquaculture developments. Nevertheless, it may result in beneficial as well as detrimental consequences for fish production. One way to maximize the benefits of polyculture is to combine species with high levels of compatibility and complementarity. This requires the development of a ranking procedure, based on a multi-trait assessment, that highlights the most suitable species combinations for polyculture. Moreover, in order to ensure the relevance of such a procedure, it is important to integrate the socio-economic expectations by assigning relative weights to each trait according to the stakeholder priorities. Here, we proposed a ranking procedure of candidate fish polycultures (i.e., species combinations that could be potentially interesting for aquaculture) based on a multi-trait assessment approach and the stakeholder priorities. This procedure aims at successively (i) weighting evaluation results obtained for each candidate polyculture according to stakeholder priorities; (ii) assessing differentiation between candidate species combinations based on these weighted results; and (iii) ranking differentiated candidate polycultures. We applied our procedure on three test cases of fish polycultures in recirculated aquaculture systems. These test cases each focused on a target species (two on Sander lucioperca and one on Carassius auratus), which were reared in two or three different alternative candidate fish polycultures. For each test case, our procedure aimed at ranking alternative combinations according to their benefits for production and/or welfare of the target species. These benefits were evaluated based on survival rate as well as morphology, behavioral, and physiological traits. Three scenarios of stakeholder priorities were considered for weighting evaluation results: placing a premium on production, welfare, or both for the target species. A comparison of our procedure results between these scenarios showed that the ranking changed for candidate polycultures in two test cases. This highlights the need to carefully consider stakeholder priorities when choosing fish polycultures.
20
Bischoff, Adrian A., Melanie Kubitz, Claudia M. Wranik, Laura Ballesteros-Redondo, Patrick Fink, and Harry W. Palm. "The Effect of Brachionus calyciflorus (Rotifera) on Larviculture and Fatty Acid Composition of Pikeperch (Sander lucioperca (L.)) Cultured under Pseudo-Green Water Conditions." Sustainability 14, no. 11 (May 27, 2022): 6607. http://dx.doi.org/10.3390/su14116607.
Анотація:
A new cultivation system with the chlorophyte Monoraphidium contortum combined with a self-sustaining culture of the freshwater rotifer Brachionus calyciflorus was applied for Sander lucioperca (L.) larviculture. Survival, morphometrics, as well as fatty acid composition of pikeperch larvae were analyzed after a ten-day feeding period. By using the pseudo-green water technique with improved aeration and water movement at the surface, survival rates reached up to 94%, with a total larval length of 8.1 ± 0.3 mm and a specific length growth rate of up to 4.1% day−1 for S. lucioperca. The biochemical composition of B. calyciflorus and especially its contents in C18 PUFAs and suitable n-3/n-6 ratios met the nutritional requirements of pikeperch larvae. The high abundance of highly unsaturated fatty acids (HUFAs) in the diet appeared to be less important in the first feeding due to a possible retention of essential fatty acids, which originate from the yolk sac reserves, at adequate levels. Exponential growth of microalgae and zooplankton under the applied conditions was most effective when stocking M. contortum five days and B. calyciflorus three days before adding the fish larvae. Appropriate timing and sufficient live feed density allowed a successful integration of B. calyciflorus into pikeperch larviculture. We hypothesize that feeding pikeperch larvae with a self-sustaining Brachionus-culture under pseudo-green water conditions with minor disruptions during larviculture will improve survival and growth. This system is a first step towards pikeperch larviculture inside recirculated aquaculture systems (RAS) under continuous feed supply with live feed within the same aquaculture unit.
21
Edwards, Grace, Wouter Visch, Catriona L. Hurd, Greg Smith, and Quinn Fitzgibbon. "Nitrogen excretion by the lobsters Panulirus ornatus and Thenus australiensis and uptake by the brown algae Sargassum siliquosum: Implications for integrated recirculated aquaculture systems." Aquaculture 581 (February 2024): 740486. http://dx.doi.org/10.1016/j.aquaculture.2023.740486.
22
Koziy, A. "Improvement of the technology of production of table grainy sterlet (Acipenser ruthenus (Linnaeus, 1758)) caviar." Ribogospodarsʹka nauka Ukraïni., no. 1(55) (March 31, 2021): 39–55. http://dx.doi.org/10.15407/fsu2021.01.039.
Анотація:
Purpose. Tosubstantiate scientifically and improve the technology of producing table caviar from ovulated sterlet eggs, which ensures the preservation of natural biologically active compounds and the stability of quality parameters. To investigate table caviar for microbiological, toxicological and toxico-biological safety. To determine the prospect of using the data in the practice of caviar sturgeon breeding. Methodology. Primary materials were obtained in the conditions of «Oasis Bisan» JSC. The results obtained were processed by organoleptic, biochemical, microbiological, toxicological, toxic-biological methods, as well as by the method of variation statistics using MS Excel with an emphasis on standard errors. Findings. Application of the heat treatment mode (78°C) of ovulated sterlet eggs while reducing the total time of the technological process to 1.0 minute contributes to the preservation of the integrity of food product components. Sterlet eggs from recirculated aquaculture system differed from a similar product from fish from natural waters by a lower mineral content (by 1.2%), an increased content of dry matter (by 8.1%), protein (by 7.5%) and lipids (by 3.7%). This fact indicates a decrease in the water content of the product and the acquisition of optimal gastronomic qualities. Sterlet caviar proteins were found to contain a full set of essential amino acids, the chemical score of which exceeded 100%; no limiting amino acids were found. Comparative analysis of sterlet caviar from recirculated aquaculture systems and from natural habitats showed the absence of significant differences in the amino acid composition, which demonstrated the biological value of the product. The use of the mode of short-term high-temperature heat treatment allows ensuring sufficient safety of the food product. The absence of E. coli and yeast in caviar was found. Pb, Cd, As and Hg contents in sterlet caviar were significantly lower than the maximum permissible levels. The total value of hexachloran and isomers was 0,0027mg/kg; DDT and metabolites – 0,016 mg/kg, polychlorinated biphenyls – 0,017 mg/kg and corresponded to permissible limits. The absence of altered forms, growth inhibition or death of tetrachimens confirms the toxicological safety of the finished product. The shelf life of the finished product without preservative is 6 months at a storage temperature of minus 2°C – minus 4°C, which parametrically meets the requirements of TU U 10.2-37758242-002: 2018. Originality. The technology of processing ovulated sterlet caviar has been scientifically substantiated and experimentally tested. New data on the comparison of the results of classical pasteurization and short-term high-temperature heat treatment of caviar are presented. For the first time, the amino acid composition of sterlet caviar was studied under conditions of recirculated aquaculture systems, and the analysis of grainy caviar for hexachloran and isomers, DDT and metabolites, and polychlorinated biphenyls was carried out. Information on the chemical composition of caviar in the process of technological processing was clarified and supplemented. Practical value. The advantage of the improved technology of processing raw caviar over the classical method of pasteurization was determined. The expediency of using an alternative technology in order to save energy and preserve traditional organoleptic properties, nutritional value and safety of the finished product were experimentally confirmed. On the basis of the results of the studies carried out, the technical documentation of TU «Technological instruction for the production of granular sturgeon caviar» and «Working instruction for the selection of caviar» were developed and agreed in accordance with the established procedure with the bodies and institutions of the State Sanitary and Epidemiological Surveillance and the State Standard. The developed technology was tested in the development of pilot batches of food sterlet caviar, which made it possible at the «Oasis Bisan» enterprise to introduce a food safety management system and conduct a certification audit by the International certification body TUV SUD for compliance with the International standard ISO 22000: 2005. Commission, the «Oasis Bisan» enterprise received an EU registration number: a-UA-14-20-121-VIII-PP, in connection with which it has the right to export products (sturgeon caviar) to the countries of the European Union. Key words: technology, heat treatment, pasteurization, food caviar, biological value, safety, finished product.
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Schwartz, Pamela A., Tyler S. Anderson, and Michael B. Timmons. "Predictive Equations for Butterhead Lettuce (Lactuca Sativa, cv. Flandria) Root Surface Area Grown in Aquaponic Conditions." Horticulturae 5, no. 2 (May 16, 2019): 39. http://dx.doi.org/10.3390/horticulturae5020039.
Анотація:
Aquaponic systems are becoming more prevalent and have led to accurate mass and energy balance models that allow nutrient utilization to be maximized and plant and fish systems to be coupled or complimentary. Such models still do not address the potential of using the plant side as both the primary nitrification system and as a sink for the nitrate being produced from the fish system. However, using the plants as the nitrification system for the fish waste requires a better understanding and quantification of the nitrification capacity of the plant system. A series of experiments were conducted using butterhead lettuce (Lactuca sativa, cv. Flandria) in deep water culture rafts. Plants were grown under two growing conditions and were evaluated based upon harvestable weight. Treatment 1 (H5) consisted of a standard hydroponic nutrient solution maintained at pH 5.8, while treatment 2 (A7) consisted of an aquaponic waste solution maintained at pH 7.0. The aquaponic conditions were created from a fish rearing system using koi (Cyprinus carpio) that was continuously recirculated between the designated plant tubs and the fish tank with an in-line bead filter to capture and mineralize fish solids. The total root surface area was not significantly different between treatments, but the ratio of root surface area to root fresh weight was different, suggesting that aquaponic roots are finer than hydroponic roots. Predictive equations were developed to correlate root surface area to shoot or root fresh weight, which can be used to design the nitrification component for a recirculating aquaculture system (RAS), as part of an integrated aquaponic system.
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Thomas, Marielle, Jean-Gabriel Reynaud, Yannick Ledoré, Alain Pasquet, and Thomas Lecocq. "Enrichment in a Fish Polyculture: Does it Affect Fish Behaviour and Development of Only One Species or Both?" Applied Sciences 12, no. 7 (April 6, 2022): 3674. http://dx.doi.org/10.3390/app12073674.
Анотація:
Physical enrichment of structures has been used for the last decades in aquaculture to improve fish production and welfare. Until now, this enrichment has been practiced in fish monoculture but not in fish polyculture. In this study, we developed a polyculture of two freshwater species (pikeperch and sterlet) in recirculated systems (tank of 2.4 m3) with or without physical structures for enrichment. Two types of structures were used: a cover plank on a part of the tank decreasing the light intensity and vertical pipes modifying the water flow. The experiment was conducted in triplicate for a three-month period with juvenile fishes (143 ± 41 g and 27.3 ± 2.2 cm for pikeperch and 133 ± 21 g and 32.8 ± 1.6 cm for sterlet). Behavioural (space occupation and abnormal behaviours) and morphological (total length, final weight, Fulton condition factor, coefficient of variation of the final weight, percentage of biomass gain and specific growth rate) traits were measured. The pikeperch changed their space occupation and showed a preference for low light areas. Sterlet also changed their space occupation: they did not use the cover and occurred mainly in the part of the tank without enrichment. There was no difference for the frequency of abnormal behaviours for pikeperch and sterlet between the two sets (with or without enrichment). There was no statistical difference between the two sets for all the morphological and growth parameters no matter the species and the rearing modality.
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VATSOS (Ι. Ν. ΒΑΤΣΟΣ), N. I., and M. GEORGIADIS (Μ. ΓΕΩΡΓΙΑΔΗΣ). "Transmission through the water of the bacterial diseases of the euryaline fish cultured in the Mediterranean. Elements of epidemiology and risk factors which concern their spread and transmission of the respective pathogens." Journal of the Hellenic Veterinary Medical Society 59, no. 3 (November 22, 2017): 213. http://dx.doi.org/10.12681/jhvms.14959.
Анотація:
Intensive fish culture practiced in the Mediterranean requires fish to live under stressful conditions and high fish densities, something that facilitates transmission and spread of bacterial pathogens within cultured fish populations. One of the most important means of transmission of bacterial diseases of the euryaline fish that are cultured in the Mediterranean is the seawater. The main pathogenic bacteria that infect the euryaline fish species that are cultured in the Mediterranean are: Listonella anguillarum, Photobacterìum damselae subsp piscicida Tenacibaculum marìtimum, Piscirikettsia salmonis, Pseudomonas anguilliseptica as well as various species of the genus Vibrìo, various species of the genera Streptococcus and Lactococcus, and species of the genus Mycobacterium. In the natural environment the bacteria, which are usually shed by infected fish, after surviving for some time in the water column and the bottom of the sea can, under appropriate conditions, infect other, cultured or wild susceptible fish. This review presents the published information that concerns the ability of the various bacterial pathogens of the euryaline fish to spread via water. Most of the published information concerning the bacterial diseases of the Mediterranean cultured euryaline fish deal with the characteristics, resistance and means of transmission of the respective bacteria, as determined in experimental studies. This information is very important for the design and application of prevention and control programs for the respective diseases, however, these programs must also consider epidemiological information concerning risk factors that may affect the onset and severity of the diseases. The investigation of risk factors, in analytical epidemiological studies, focuses on characteristics that relate to the pathogen, the host and the environment, which can concern and be measured at the farm level or at any other level of organization of the population. Especially useful in these cases is the determination of management practices which can be related to increased or decreased morbidity or mortality (total or due to specific diseases). In the current study, reference is made to analytical epidemiological studies in which risk factors that may affect the transmission of several fish pathogens, as well as the occurrence and severity of the respective diseases, have been investigated. Although these studies refer to environments outside the Mediterranean, however, they are particularly interesting because they concern infectious agents that are transmitted by water in conditions and culture environments similar to those of the Mediterranean seawater aquaculture. The approach of prevention of bacterial diseases through management of the populations and their environment is particularly important in the intensive culture of euryaline fish, since the methods that are used, today, for the reduction of the concentration of bacterial pathogens in the water have limited application and effectiveness in such systems. At the farm level, and especially in land-based facilities, three methods are used to decrease the concentration of pathogenic bacteria in the incoming sea water: ozonation, UV radiation and manipulation of the microbial flora of the water using non pathogenic microorganisms, which act antagonistically to the pathogenic bacteria. The first two methods are especially effective in flow-through systems, where water is not recirculated but not so much in closed systems where because the water is re-used fish are infected by the few bacteria that survive the treatment. The alteration of the microbial flora of the incoming water, through antagonism, can be applied in hatcheries during the initial stages of fish culture, but not at the grow out stage in the cages.
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Pueyo, Catherine Dr. "Biochar from Corn Waste as Biofilter in a Recirculating Aquaculture Systems." International Journal for Research in Applied Science and Engineering Technology 10, no. 2 (February 28, 2022): 166–70. http://dx.doi.org/10.22214/ijraset.2022.40180.
Анотація:
Abstract: The use of biofilter with the application of biochar technology for the improvement of water in a recirculating aquaculture system (RAS) provides a lot of advantages in aquaculture production. The research aimed to devise a biofilter system for the enhancement of TAN and un-ionized ammonia levels in a RAS using biochar from corn cobs for Nile tilapia Oreochromis niloticus production. It has five main parts: fish tank, biochar filtration tank, sediment filter, sludge filter and pump. The fish tank used is a 1 m 3 plastic cubical tank. The biochar filtration tank with a height of 85 cm and a diameter of 30 cm. The sludge filter has a height of 52 cm with a diameter of 13 cm. An electric water pump was used to recirculate the water. The system was fabricated and were able to effectively enhance the level of total ammonia nitrogen (TAN) at a rate of 0.56 ppm per hour for every 1kg biochar and 0.72 ppm per hour for the reduction of un-ionized ammonia. The devised biofilter proved to reduce the level of TAN by 9.45 ppm and un-ionized ammonia levels by 2.18 ppm in 6 hours and 30 minutes using corn cob biochar. Keywords: Biochar, Biofilter, Recirculating Aquaculture Systems (RAS), Total Ammonia Nitrogen (TAN), Un-ionized ammonia
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Puluhulawa, Riska, Tatag Budiardi, Iis Diatin, and Irzal Effendi. "Production performance and business analysis of clown loach Chromobotia macracanthus (Bleeker 1852) in recirculating systems with different stocking densities and water discharge." Jurnal Iktiologi Indonesia 21, no. 2 (June 1, 2021): 89–104. http://dx.doi.org/10.32491/jii.v21i2.573.
Анотація:
Efforts to improve the production performance of clown loach in recirculate aquaculture system can be done by increasing stocking density and water discharge. This study aimed to analyze the effect of increasing stocking density and water discharge on production performance, stress response and water quality in order to obtain the best stocking density and water discharge to obtain maximum profit in a short time. A factorial completely randomized design with two factors, i.e. the stocking density of 1, 2, and 3 fish L-1 and the water discharge of 0,05; 0,10; 0,15 L s-1 was performed. The volume of water used in each aquarium was 48 L and using a ½ inch faucet stop to regulate the water discharge from the inlet pipe. Clown fish fed Tubifex sp. with a feeding frequency of two times a day according to the treatment for 60 days. The result indicates that there was no interaction between the two factors on production performance, payback period, and R/C ratio. Stocking density has a significant effect on specific growth rate, absolute growth rate of individual weight, feeding consumption rate and R/C ratio of clown loach. Stocking density and water discharge had an interaction on the visual color of pectoral and caudal fins of clown loach. Different stocking densities with the combination of water discharge in this study resulted that the water quality were within tolerable range for clown loach so that they did not experience stress, as well as high production and business performance. It is recommended to intensify clown loach with a stocking density of 3 fish L-1 and 0,15 L s-1‑ of water discharge.
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Soto Alcalá, Jorge, Píndaro Álvarez Ruiz, Juan M. Audelo Naranjo, Héctor M. Esparza Leal, Irasema E. Luis Villaseñor, José A. Estrada-Godínez, Antonio Luna-González, Carina Gámez-Jiménez, and Genaro Diarte Plata. "Comparing RAS with and without biofloc: Transcriptional response of immune-related genes in Litopenaeus vannamei post-larvae." Revista Colombiana de Ciencias Pecuarias 33, no. 1 (January 31, 2020): 32–43. http://dx.doi.org/10.17533/udea.rccp.v33n1a03.
Анотація:
Background: Shrimp farming is evolving from semi-intensive to hyper-intensive systems with biofloc technology and water recirculation systems. Objective: To evaluate the transcriptional response promoted by biofloc on shrimp (Litopenaeus vannamei) under a recirculating aquaculture system (RAS). Methods: Quantitative real-time RT-PCR was used to monitor seven key genes related to the immune system in shrimp post-larvae, reared in a RAS with and without biofloc (BF and noBF). In addition, we present for the first time nucleotide sequences of ADP-ribosylation factor 4 (LvArf4) from Litopenaeus vannamei. Results: Transcripts for penaeidin3 (Pen3), penaeidin4 (Pen4), crustin, and Toll receptor (LvToll) genes were upregulated between 3 and 24 h in both systems, and tumor necrosis factor receptor-associated factor 6 (TRAF6) in no-BF as an early response. Regarding differential expression between treatments, 13 occurrences were encountered. Nine that were higher in BF than in no-BF and four higher in no-BF than in BF. In some sample times, expression of Pen3, crustin, LvToll, TRAF6, IMD, and LvArf4 was higher in BF than in no-BF and in others, expression of Pen3, Pen4, and TRAF6 was higher in no-BF than in BF. Conclusions: BF modulates the transcription of genes related to the immune response in shrimp as an early response. However, the RAS with no-BF promotes a similar response.Keywords: antimicrobial peptide; aquaculture; biofloc; gene expression; Penaeidin; RAS; shrimp; shrimp immune system. Resumen Antecedentes: Los cultivos de camarón están evolucionando de sistemas semi-intensivos a hiper-intensivos con biofloc y con recirculación. Objetivo: Evaluar la respuesta transcripcional promovida por el biofloc en un sistema acuícola con recirculación (SAR). Métodos: Monitoreamos mediante RT-PCR cuantitativo siete genes relacionados con el sistema inmune en postlarvas de camarón cultivadas en un SAR con y sin biofloc (BF y no-BF). Además, presentamos por primera vez la secuencia de nucleótidos del factor de ribosilación 4 de ADP (LvArf4) de Litopenaeus vannamei. Resultados: Los genes penaeidina3 (Pen3), penaeidina4 (Pen4), Crustina y Toll (LvToll) se sobre-expresaron entre las 3 y 24 h en ambos sistemas, y el factor 6 asociado al factor de necrosis tumoral (TRAF6) en BF como una respuesta temprana. Con respecto a la expresión diferencial entre los tratamientos, se presentaron 13 ocurrencias. Nueve donde el BF fue mayor que sin-BF y cuatro donde el no-BF fue mayor que el BF. La expresión fue más alta en BF que en no-BF en Pen3, Crustin, LvToll, TRAF6, IMD y LvArf4. En contraste, la expresión fue mayor en no-BF en Pen3, Pen4 y TRAF6. Conclusiones: el BF modula la transcripción de los genes relacionados con la respuesta inmune en camarón como una respuesta temprana. Sin embargo, el SAR sin-BF promueve una respuesta similar.Palabras clave: aquicultura; biofloc; camarón; expresión genética; Penaeidina; péptido antimicrobiano; SAR; sistema inmune de camarón. Resumo Antecedentes: A criação de camarões está evoluindo de sistemas semi-intensivos para hiper-intensivos como tecnologia de bioflocos e sistemas de recirculação. Objetivo: Avaliar a resposta transcricional promovida pelo biofloco em um sistema de aquicultura recirculante (SAR). Métodos: Utilizamos RT-PCR quantitativo em tempo real para monitorar sete genes-chave relacionados ao sistema imune em pós-larvas de camarão, criados em SAR com e sem bioflocos (BF e no-BF). Além disso, apresentamos pela primeira vez sequências nucleotídicas do fator de ribosilação do ADP 4 (LvArf4) de Litopenaeus vannamei. Resultados: Os resultados mostraram que o Penaeidina3 (PEN3), Penaeidina4 (Pen4), Crustina e Toll genes (LvToll) foram sobre-expressos entre 3 e 24 h em ambos os sistemas, e o Factor de Necrose do Receptor 6 associado e protuberância (TRAF6) no BF como uma resposta precoce. Com relação à expressão diferencial entre tratamentos, 13 ocorrências foram apresentadas. Nove onde o BF foi maior do que os não-BF e quatro onde o não-BF foi maior do que o BF. A expressão foi maior do que em BF não-BF em Pen3, Crustin, LvToll, TRAF6, IMD e LvArf4. Em contraste, a expressão foi mais elevada no não-BF em Pen3, Pen4 e TRAF6. Conclusões: O BF modula a transcrição de resposta imune relacionada no camarão como um genes de resposta precoce. No entanto, o SAR não BF promove uma resposta semelhante.Palavras-chave: aquicultura; biofloco; camarão; expressão genética; Penaeidina; peptídeo antimicrobiano; SAR; sistema imunológico do camarão.
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Albuja, Vanessa, Juan Andrade, Carlos Lucano, and Michelle Rodriguez. "Comparativa de las ventajas de los sistemas hidropónicos como alternativas agrícolas en zonas urbanas." Minerva 2, no. 4 (March 16, 2021): 45–54. http://dx.doi.org/10.47460/minerva.v2i4.26.
Анотація:
Este trabajo surge a partir de la investigación general de las técnicas hidropónicas teniendo en cuenta sus ventajas y desventajas para de esta forma poder encontrar aquel factor determinante a través de una comparación de técnicas hidropónicas que permitan clasificarlas y escoger la mejor opción que genere menos impacto ambiental negativo y demuestre ser más productivo en los entornos urbanos. Adicionalmente, un factor determinante en las ciudades es su espacio limitado por lo que la mejor opción también deberá incluir un óptimo manejo del espacio que permita a casi cualquier individuo poder aplicarlos desde su entorno sin recurrir a excesivas modificaciones. Como principal resultado se escogió a la Hidroponía recirculante como método predominante por los excelentes resultados que se obtienen con relación a los demás, adicionalmente, este puede ser fácilmente aplicado en los ambientes urbanos por su versatilidad y buen manejo de recursos.
Palabras Clave: Hidroponia, ambiente, urbano, comparativa, técnicas, cultivo.
Referencias
[1]J. López, «La producción hidropónica de cultivos,» IDESIA (Chile), vol. 36, nº 2, pp. 139-141, 2018.
[2]J. Lee, A. Rahman, J. Behrens, C. Brennan, B. Ham, H. Seok Kim, C. Won, S. Yun, H. Azam y M. Kwon, «Nutrient removal from hydroponic wastewater by a microbial consortium,» New Biotechnology, vol. 41, pp. 15-24, 2018.
[3]H. Ku, C. Tiong, A. Suresh y B. Ong, «“Active” hydroponic greenhouse system to kick-start and augment reforestation program through carbon sequestration e an experimental and theoretical feasibility study,» Journal of Cleaner Production, vol. 129, pp. 637-646, 2016.
[4]J. Beltrano y D. Gimenez, Cultivo en hidroponía, Buenos Aires: Universidad de la Plata, 2015.
[5]L. Ramírez, M. Pérez, P. Jiménez, H. Giraldo y E. Gómez, «Evaluación preliminar de sistemas acuapónicos e hidropónicos en cama flotante para el cultivo de orégano (Origanum vulgare: LAMIACEAE),» Revista Facultad de Ciencias Básicas, vol. 7, nº 2, pp. 242-259, 2011.
[6]S. Hosseinzadeh, D. Testai, M. BKheet y J. De Graeve, «Degradation of root exudates in closed hydroponic systems using UV/H2O2: Kinetic investigation, reaction pathways and cost analysis,» Science of the Total Environment, vol. 1, pp. 1-9, 2019.
[7]N. Camarena, A. Rojas y M. Santos, «Fluoride bioaccumulation by hydroponic cultures of camellia,» Chemosphere, vol. 136, pp. 56-62, 2015.
[8]W. Wang, Y. Ma, L. Fu, Y. Cui y M. Yaqoob, «Physical an mechanical properties of hydroponic lettuce for automatic harvesting,» Informatión processing in agriculture, vol. 1, pp. 2214-3173, 2020.
[9]M. Zárate, Manual de Hidroponia, Coyoacán: Universidad Autónoma de Mexico, 2014.
[10]S. Magwaza, L. Magwaza, A. Odindo y C. Buckley, «Partially treated domestic wastewater as a nutrient source for tomatoes(Lycopersicum solanum) grown in a hydroponic system: effect on nutrientabsorption and yield,» Heliyon, vol. 6, nº 12, pp. 2405-8440, 2020.
[11]C. ARANO, «Hidroponía: Algunas paginas de historia,» Tecnología de Producción , nº 58 , pp. 24-32, 2007.
[12]G. Guzmán, Hidroponia en Casa: Una actividad familiar, Costa Rica: Ministerio de Agricultura y ganaderia, 2004.
[13]J. Gilsanz, HIDROPONIA, Montevideo : Unidad de Comunicación y Transferencia de Tecnología , 2007.
[14]C. Miller, «El debate de hidroponia orgánica: Perspectivas norteamericanas sobre si la producción hidropónica merece ser certificada como orgánica.,» Productores de Hortalizas, nº 6, pp. 36-38, 2017.
[15]A. Herrera, «Manejo de la solución nutritiva en la producción de tomate en hidroponía,» Terra Latinoamericana, vol. 17, nº 3, pp. 221-229, 1999.
[16]C. Espinal y D. Matulić, «Recirculating Aquaculture Technologies,» Biomedical and Life Sciences, pp. 35-76, 2020.
[17]H. Resh, «Técnicas de cultivo con flujo laminar de nutrientes,» de Cultivos Hidroponicos, España, Mundi-Prensa, 2001, pp. 35-37.
[18]P. Blanca y L. Teresa, «Sistemas recirculantes y su interés en el cutlivo de ornamentales,» Tecnología de producción, nº 35, pp. 34-36, 2006.
[19]C. Magán, «Recirculación de las soluciones nutritivas, Manejo y Control Microbiologico,» InfoAgro , nº 2, pp. 1-2, 2016.
[20]S. Goddek, A. Joyce, B. Kotzen y M. Dos-Santos, «Aquaponics and Global Food Challenges,» Aquaponics Food Production Systems. Springer, vol. 1, nº 1, pp. 3-17, 2019.
[21]S. G. Verdoliva, D. Gwyn Jones, A. Detheridge y P. Robson, «Controlled comparisons between soil and hydroponic systems reveal increased water use efficiency and higher lycopene and β-carotene contents in hydroponically grown tomatoes,» Scientia Horticulturae, pp. 3002-4238, 2020.
[22]A. Chaudhry y V. Mishra, «A Comparative Analysis of Vertical Agriculture Systems in Residential Apartments, » de 2019 Advances in Science and Engineering Technology International Conferences (ASET), Dubai, United Arab Emirates, United Arab Emirates, 2019.
[23]T. Mazhar, G. Jianmin, L. Imran, S. Kashif, Q. Waqar, S. Sher y C. Jiedong, «Modern plant cultivation technologies in agriculture under controlled nvironment: a review on aeroponics,» Journal of Plant Interactions, vol. 13, nº 1, pp. 338-352, 2012.
[24]K. Janiak, A. Jurga, J. Kuźma, W. Breś y M. Muszyński, «Surfactants effect on aeroponics and important mass balances of regenerative life support system – Lettuce case study,» Science of the Total Environment, vol. 718, nº137324, pp. 1-12, 2020.
[25]F. Rahman, I. Jahan, R. Biplob, N. Farhin y J. Uddin, «Automated Aeroponics System for Indoor Farming using Arduino,» de 2018 Joint 7th International Conference on Informatics, Electronics & Vision (ICIEV) and 2018 2nd International Conference on Imaging, Vision & Pattern Recognition (icIVPR), Kitakyushu, Japan, 2018.
[26]M. Caldeyro Stajano, «La Hidroponía Simplificada como Tecnología apropiada, para implementar la Seguridad Alimentaria en la Agricultura Urbana.,» Cuadernos del CEAgro, nº 8, pp. 71-76, 2006.
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Khalil, Sammar, Preeti Panda, Farideh Ghadamgahi, AnnaKarin Rosberg, and Ramesh R. Vetukuri. "Comparison of two commercial recirculated aquacultural systems and their microbial potential in plant disease suppression." BMC Microbiology 21, no. 1 (July 5, 2021). http://dx.doi.org/10.1186/s12866-021-02273-4.
Анотація:
Abstract Background Aquaponics are food production systems advocated for food security and health. Their sustainability from a nutritional and plant health perspective is, however, a significant challenge. Recirculated aquaculture systems (RAS) form a major part of aquaponic systems, but knowledge about their microbial potential to benefit plant growth and plant health is limited. The current study tested if the diversity and function of microbial communities in two commercial RAS were specific to the fish species used (Tilapia or Clarias) and sampling site (fish tanks and wastewaters), and whether they confer benefits to plants and have in vitro antagonistic potential towards plant pathogens. Results Microbial diversity and composition was found to be dependent on fish species and sample site. The Tilapia RAS hosted higher bacterial diversity than the Clarias RAS; but the later hosted higher fungal diversity. Both Tilapia and Clarias RAS hosted bacterial and fungal communities that promoted plant growth, inhibited plant pathogens and encouraged biodegradation. The production of extracellular enzymes, related to nutrient availability and pathogen control, by bacterial strains isolated from the Tilapia and Clarias systems, makes them a promising tool in aquaponics and in their system design. Conclusions This study explored the microbial diversity and potential of the commercial RAS with either Tilapia or Clarias as a tool to benefit the aquaponic system with respect to plant growth promotion and control of plant diseases.
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HASTUTI, YUNI PUJI, IMAN RUSMANA, KUKUH NIRMALA, RIDWAN AFFANDI, and SISKA TRIDESIANTI. "Short Communication: Identification and characterization of nitrifying bacteria in mud crab (Scylla serrata) recirculation aquaculture system by 16S rRNA sequencing." Biodiversitas Journal of Biological Diversity 20, no. 5 (April 24, 2019). http://dx.doi.org/10.13057/biodiv/d200524.
Анотація:
Abstract. Hastuti YP, Rusmana I, Nirmala K, Affandi R, Tridesianti S. 2019. Identification and characterization of nitrifying bacteria in mud crab (Scylla serrata) recirculation aquaculture system by 16S rRNA sequencing. Biodiversitas 20: 1339-1343. Recirculation is one of the systems used for increasing aquaculture production, for example, is mud crab Scylla serrata culture. Aquaculture activities will produce organic nitrogen waste and can be affected to inorganic condition (nitrification bacteria). Nitrifying bacteria are capable of changing aerobically from NH4+ to NO2-(nitrite) and from NO2-to NO3-(nitrate). This current work aimed to identify and characterize nitrifying bacteria in mud crab (S. serrata) culture with a recirculated system. Nitrifying bacteria were isolated using serial dilution (10-1 until 10-5) of open filter FB water sample previously cultured in a specific medium. Bacterial identification was performed using a procedure of PrestoTM Mini gDNA Kit (Geneid) for DNA extraction and Polymerase Chain Reaction (PCR) primer 63F and 1387R for 16S rRNA gene amplification. Molecular identification using 16S rRNA sequences, the nitrifying bacteria isolated from mud crab recirculation aquaculture system were 99% identified as a group Pantoea calida, Pseudomonas stutzerii dan Halomonas sp. Morphological characterization of the colony morphology showed that a mucoid appearance and appeared cream in color and large size. Furthermore, their cells were recognized as basil and Gram-negative.
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Chacón-Guzmán, Jonathan, Milagro Carvajal-Oses, Angel Herrera-Ulloa, and Pedro Toledo- Agüero. "Growth and fillet yield in recirculation systems of Lobotes pacificus (Perciformes: Lobotidae), a species with aquaculture potential." Revista Ciencias Marinas y Costeras, September 12, 2019, 129–43. http://dx.doi.org/10.15359/revmar.11-2.7.
Анотація:
The genus Lobotes extends across tropical and subtropical areas of oceans such as the Atlantic and the Pacific; it is extracted in artisanal fisheries, and its aquaculture production technology is still under investigation. The objective of this paper was to evaluate the growth and fillet yield of L. pacificus in recirculated systems. In 2014, for a 100-day period, 132 juveniles were placed in six 10m3 tanks (22 fish/tank), D1 (ranging 5-13 g, x̄ = 8.8 ± 1.9 g, n = 66), and D2 (ranging 14-80 g, x̄ = 44.7 ± 16.4 g, n = 66). Fish were fed to satiety, D1 with artificial feed and D2 with sardines. The weight-length relationship was calculated for each group. Fish had a final weight of 47.7 ± 20.3 g and 612.2 ± 238.7 g in groups D1and D2, respectively, while survival was 98.3% and 72.7% in groups D1 and D2. The whole fish and fillet yields (whole eviscerated fish yield of 89.0 ± 0.5% and fillet yields without skin of 36.1 ± 0.6%) from group D2 were considered acceptable and competitive. The 100 days of culture indicated that L. pacificus reached commercial sizes in less time than other similar fish species; however, the use of sardines as the only source of food was not recommended. This study showed that L. pacificus has high yield potential for aquaculture.
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Jerónimo, Daniel, Ana Isabel Lillebø, Javier Cremades, Paulo Cartaxana, and Ricardo Calado. "Recovering wasted nutrients from shrimp farming through the combined culture of polychaetes and halophytes." Scientific Reports 11, no. 1 (March 23, 2021). http://dx.doi.org/10.1038/s41598-021-85922-y.
Анотація:
AbstractThe bioremediation and biomass production of organic extractive organisms (polychaetes Arenicola marina, Hediste diversicolor and halophyte Salicornia ramosissima) was assessed in an integrated multi-trophic aquaculture (IMTA) framework. Culture trials were performed outdoors using the nutient rich effluent from a shrimp farm employing recirculated aquaculture systems. Similar bioremediation efficiencies were obtained in cultures using a single polyculture tank (1 T) or two trophic levels separated tanks (2 T; ≈ 0.3 and 0.6 m2 operational area, respectively), with a reduction of 74–87% for particulate organic matter (POM), 56–64% for dissolved inorganic nitrogen (DIN) and 60–65% for dissolved inorganic phosphorus (DIP). Hediste diversicolor adapted well to culture conditions, reaching densities up to 5.000 ind. m−2 (≈ 78–98 g m−2). Arenicola marina failed to cope with water temperature that exceeded the species thermal limits, displaying a survival < 10% (20 °C often pointed as the maximum thermal threshold for this species). Productivity of S. ramosissima with 1 T was about twice that obtained with 2 T (≈ 150–170 and ≈ 60–90 g FW m−2 edible aboveground biomass, respectively). The yellowish coloration of cultured plants was likely due to the chemical oxidation and rapid sand filtration pre-treatment applied to the brackish groundwater used in the aquaculture facility, that removed iron (and probably other essential elements). Overall, 1 T design combining H. diversicolor and S. ramosissima displayed the best bioremediation performance and biomass production, while also allowing reducing in half the operational area required to implement this IMTA framework.
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Koco, Nobah Céline Sidonie, Koffi Kouakou Barthélemy, and Kouakou Affoué Constantine. "Bibliographic Review of Aquatric Systems and their Relevance to the Ivory Coast, a Sub-Saharan African Country." European Scientific Journal ESJ 25 (January 31, 2024). http://dx.doi.org/10.19044/esipreprint.1.2024.p117.
Анотація:
Through a review of aquaponic techniques, the present work highlights the interest aroused by this practice in the world as well as different modes of exploitation. Aquaponics is defined as a coupling between a recirculated aquaculture compartment and an aboveground crop compartment. Since two decades, it has been the subject of a significant economic activity in Canada, the USA, Australia and induces numerous research activities. This system is subdivided into three (3) major techniques which are the culture techniques on bed of inert substrates, on nutritive film and that of rafts. Aquaponics is the subject of profitable industrial economic activity on both large and small scale in the USA and Canada. Given the benefits of low water consumption, the non-use of fertilizers and pesticides, aquaponics is unquestionably according to researchers and users, the system capable of revolutionizing livestock farming and agriculture around the world. Côte d'Ivoire is suffering not only from the consequences of climate change but also from rapid urbanization, with the consequent change in water resources. Aquaponics deserves to be mastered then popularized in this country, to help produce fish and plants of better quality while avoiding the waste of water caused by traditional livestock systems.
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von Ahnen, Mathis, Colin A. Stedmon, and Adam C. Hambly. "Removal of dissolved organic matter from the woodchip bioreactor start-up by foam fractionation." Water Science and Technology, March 14, 2023. http://dx.doi.org/10.2166/wst.2023.074.
Анотація:
Abstract Denitrifying woodchip bioreactors are passive, low-tech systems primarily designed to remove nitrate from shallow ground waters as well as point source discharges, including greenhouse or aquaculture effluents. Despite their capacity to achieve constant nitrate removal over several years, natural aquatic environments may be affected by the leaching of dissolved organic matter (DOM) from fresh woodchips during start-up. Simple on-site measures might reduce the woodchip leachate during start-up and thus add to the overall environmental sustainability of woodchip bioreactor installations. The aim of the study was to investigate whether foam fractionators could provide an effective solution. Water was flowed through fresh laboratory-scale woodchip bioreactors and recirculated through foam fractionators for 11 days. The bioreactors removed nitrate but increased phosphate and ammonia, which were not effectively removed via foam fractionation. However, foam fractionation did remove 37.8 ± 4.7% of the dissolved chemical oxygen demand (CODdiss) leached during the first 11 days of operation. Fluorescence spectroscopy revealed that the DOM composition differed between the foam and water, where the foam fraction contained higher amounts of DOM associated with the highest bioavailability and hence the greatest potential environmental impact. Optimised foam fractionators could therefore help to reduce the environmental impact of DOM leachate from woodchip bioreactors during start-up.
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Glaviano, Francesca, Serena Federico, Bruno Pinto, Maissa Gharbi, Tania Russo, Anna Di Cosmo, Gianluca Polese, Maria Costantini, and Valerio Zupo. "Morphologic and genic effects of waste pollution on the reproductive physiology of Paracentrotus lividus lmk: a mesocosm experiment." Frontiers in Physiology 14 (May 23, 2023). http://dx.doi.org/10.3389/fphys.2023.1161852.
Анотація:
A considerable amount of coastal contamination is caused by wastes deriving from household and the degradation and the metabolism of plants and animals, even if our attention is commonly focused on industrial pollutants and contaminants. Waste pollutants are mainly represented by highly diluted soluble compounds and particles deriving from dead organisms. This complex combination, consisting of suspended particles and dissolved nutrients, has a significant impact on coastal planktonic and benthic organisms, also playing an active role in the global cycles of carbon. In addition, production practices are nowadays shifting towards recirculated aquaculture systems (RAS) and the genic responses of target organisms to the pollution deriving from animal metabolism are still scarcely addressed by scientific investigations. The reservoir of organic matter dissolved in the seawater is by far the least understood if compared to that on land, cause only a few compounds have been identified and their impacts on animals and plants are poorly understood. The tendency of these compounds to concentrate at interfaces facilitates the absorption of dissolved organic compound (DOC) onto suspended particles. Some DOC components are chemically combined with dissolved metals and form complexes, affecting the chemical properties of the seawater and the life of the coastal biota. In this research, we compared the reproductive performances of the common sea urchin Paracentrotus lividus cultured in open-cycle tanks to those cultured in a recirculating aquaculture system (RAS), where pollution progressively increased during the experiment due to animal escretions. Sea urchins were cultured for 7 months under these two conditions and their gametes were collected. Embryos resulting by in vitro fertilization were analyzed by Real Time qPCR to identify possible effects of pollution-induced stress. The fertility of sea urchins was evaluated, as well as the gonadosomatic indices and the histological features of gonads. Our results indicate that pollution due to excess of nutrients, event at sub-lethal concentrations, may hardly impact the reproductive potential of this key species and that chronic effects of stress are revealed by the analyses of survival rates and gene expression.
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Sorokina, Marina Nikolaevna, Petr Petrovich Geraskin, Vadim Grigoriev, Anisia Victorovna Dubovskaya, Olga Aleksandrovna Levina, Gennadiy Fedorovich Metallov, and Elena Nikolaevna Ponomareva. "INFLUENCE OF SURFAGON INJECTIONS ON BIOCHEMICAL COMPOSITION OF BLOOD AND STRUCTURAL TRANSFORMATIONS OF OVARIES IN HYBRID FEMALES OF RUSSIAN STURGEON × LENA STURGEON (ACIPENSER GUELDENSTAEDTII BRANDT, 1833 × ACIPENSER BAERII BRANDT, 1869) IN RECIRCULATED AQUACULTURE SYSTEMS." Vestnik of Astrakhan State Technical University. Series: Fishing industry, December 25, 2018, 117–31. http://dx.doi.org/10.24143/2073-5529-2018-4-117-131.
Анотація:
The article focuses on the special trend in technology of fish reproduction - use of a recirculated aquaculture system that allows creating optimum hydrological and hydrochemical parameters for a certain fish species regardless of the environmental conditions. Nevertheless, in the course of developing the new modifying factors of the environment (simulated conditions) the common orientation of a metabolism or separate biochemical reactions, in particular, generative exchange can be broken. It has been stated that dynamics of biochemical indexes of blood and urine characterizes intensity and orientation of generative exchange and allows to estimate possibility of structural transformations of fish ovaries. The analysis of the influence of a synthetic analog of hormone luliberin - surfagon on hybrid females of Russian × Lena sturgeon ( Acipenser guldenstadtii Brandt, 1833 × Аcipenser baerii Brandt , 1869) characterized by low fatness has revealed the stimulation of metabolic processes. During the research a low level of protein (16.0-28.0 g/l) under the influence of surfagon has increased by 35.0-38.0%. At the same time, throughout all experiment a high level of beta lipoproteins was observed in fishes of both pilot and control groups. Under the preparation impact the level of beta lipoproteins increased by 58.0% and 61.0% after injecting 0.2 mkg/kg and 2.0 mkg/kg of surfagon, respectively. The similar tendency was observed in the course of study of the hormones predecessor - cholesterol. Under the influence of surfagon in various doses there has been registered its increase from 1.3 g/l to 2.2-2.3 g/l. Thus, the surfagon injected groups of fish demonstrated a particular type of the biochemical status and reacted to hormonal stimulation under the low level of financial and energy resources. At the same time, histologic research hasn’t revealed cardinal changes in gonad morphology.