Journal articles: 'Aquaculture'

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Madsen, Henry, and Jay Richard Stauffer. "Aquaculture of Animal Species: Their Eukaryotic Parasites and the Control of Parasitic Infections." Biology 13, no. 1 (January 11, 2024): 41. http://dx.doi.org/10.3390/biology13010041.

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Parasites are very diverse and common in both natural populations and in stocks kept in aquacultural facilities. For most cultured species, there are important bacteria and viruses causing diseases, but eukaryotic parasites are also very important. We review the various combinations of aquacultured species and eukaryotic parasitic groups and discuss other problems associated with aquaculture such as eutrophication, zoonotic species, and invasive species, and we conclude that further development of aquaculture in a sustainable manner must include a holistic approach (One Health) where many factors (e.g., human health, food safety, animal health and welfare, environmental and biodiversity protection and marketability mechanisms, etc.) are considered.

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Alfiansah, Yustian Rovi. "Aggregates in aquatic ecosystems and implications for aquacultures." Marine Research in Indonesia 45, no. 2 (December 31, 2020): 87–96. http://dx.doi.org/10.14203/mri.v45i2.584.

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Agglomerations of suspended particulate matter serve various roles in aquatic ecosystems. They participate in nutrient and energy fluxes and are involved in important food web processes. While comprehensive studies on aggregates are available from natural freshwater and marine ecosystems, little is known about the roles of aggregates in aquacultures, particularly in shrimp pond farming. As particle-rich systems, shrimp ponds and marine aquaculture (mariculture) areas constitute interesting objects for aggregate studies, particularly as a source of natural feed, particle fluxes, microbial communities, including pathogenic bacteria, and possible vector of disease widespread. The aims of this review are i) to compile the current knowledge on the role of aggregates in aquatic ecosystems, particularly in aquaculture areas covering advantages and negative side effects of aggregates in aquacultures, ii) to explore the role of aggregates in disease ecology, and iii) perspective of aquaculture management in the context of aggregate utilization and management. Since Southeast Asia, especially Indonesia, is among the most important regions for aquaculture activities, this review focuses on Indonesian aquacultures. Although aquacultures produce important amounts of aggregates, including its associated microbial communities, they are rarely investigated in Indonesian aquacultures, particularly in shrimp pond farming. In contrast, most of the studies focused on bacterial cultivation and utilization of isolates for aquacultures. Thus, understanding the ecological roles of aggregates in aquacultures may support the improvement of aquaculture management and yields.

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Yu, Juanjuan, Xiufeng He, Peng Yang, Mahdi Motagh, Jia Xu, and Jiacheng Xiong. "Coastal Aquaculture Extraction Using GF-3 Fully Polarimetric SAR Imagery: A Framework Integrating UNet++ with Marker-Controlled Watershed Segmentation." Remote Sensing 15, no. 9 (April 24, 2023): 2246. http://dx.doi.org/10.3390/rs15092246.

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Coastal aquaculture monitoring is vital for sustainable offshore aquaculture management. However, the dense distribution and various sizes of aquacultures make it challenging to accurately extract the boundaries of aquaculture ponds. In this study, we develop a novel combined framework that integrates UNet++ with a marker-controlled watershed segmentation strategy to facilitate aquaculture boundary extraction from fully polarimetric GaoFen-3 SAR imagery. First, four polarimetric decomposition algorithms were applied to extract 13 polarimetric scattering features. Together with the nine other polarisation and texture features, a total of 22 polarimetric features were then extracted, among which four were optimised according to the separability index. Subsequently, to reduce the “adhesion” phenomenon and separate adjacent and even adhering ponds into individual aquaculture units, two UNet++ subnetworks were utilised to construct the marker and foreground functions, the results of which were then used in the marker-controlled watershed algorithm to obtain refined aquaculture results. A multiclass segmentation strategy that divides the intermediate markers into three categories (aquaculture, background and dikes) was applied to the marker function. In addition, a boundary patch refinement postprocessing strategy was applied to the two subnetworks to extract and repair the complex/error-prone boundaries of the aquaculture ponds, followed by a morphological operation that was conducted for label augmentation. An experimental investigation performed to extract individual aquacultures in the Yancheng Coastal Wetlands indicated that the crucial features for aquacultures are Shannon entropy (SE), the intensity component of SE (SE_I) and the corresponding mean texture features (Mean_SE and Mean_SE_I). When the optimal features were introduced, our proposed method performed better than standard UNet++ in aquaculture extraction, achieving improvements of 1.8%, 3.2%, 21.7% and 12.1% in F1, IoU, MR and insF1, respectively. The experimental results indicate that the proposed method can handle the adhesion of both adjacent objects and unclear boundaries effectively and capture clear and refined aquaculture boundaries.

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Arumugam, Manikandan, Sudharshini Jayaraman, Arun Sridhar, Vignesh Venkatasamy, Paul B. Brown, Zulhisyam Abdul Kari, Guillermo Tellez-Isaias, and Thirumurugan Ramasamy. "Recent Advances in Tilapia Production for Sustainable Developments in Indian Aquaculture and Its Economic Benefits." Fishes 8, no. 4 (March 24, 2023): 176. http://dx.doi.org/10.3390/fishes8040176.

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Tilapia is a widely cultured species native to Africa; these fish are prolific breeders and constitute an economically important fish species supplying higher-quality protein. To meet the global food demand and achieve the UN’s Sustainable Developmental Goals (SDG), the aquaculture industry has conceived of productive solutions with the potential for adaptability, palatability, and profitability. Tilapia may play a vital role with respect to the possibility for sustainability in the nutrition and aquaculture sectors. India contributes to the promotion of aquacultural practices through a structural framework focused on agricultural, environmental, geographical, and socio-economic factors that provide opportunities for tilapia farming. Globally, the Indian aquaculture sector is currently the second largest in terms of aquacultural production but is moving toward different species that meet SDG and facilitate international marketing opportunities. The farming of aquacultural species with innovative technology constitutes an efficient use of resources. Productive research on feeding, disease management, construction, and layout helps overcome the challenges faced in aquaculture. These focused and sustained factors of the aquaculture industry offer a latent contribution to global food security. This review reports on the state of the art, the challenges regarding tilapia aquaculture in India, and the Indian government’s schemes, missions, subsidies, projects and funding related to tilapia production.

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Zhu, Hongchun, Zhiwei Lu, Chao Zhang, Yanrui Yang, Guocan Zhu, Yining Zhang, and Haiying Liu. "Remote Sensing Classification of Offshore Seaweed Aquaculture Farms on Sample Dataset Amplification and Semantic Segmentation Model." Remote Sensing 15, no. 18 (September 8, 2023): 4423. http://dx.doi.org/10.3390/rs15184423.

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Satellite remote sensing provides an effective technical means for the precise extraction of information on aquacultural areas, which is of great significance in realizing the scientific supervision of the aquaculture industry. Existing optical remote sensing methods for the extraction of aquacultural area information mostly focus on the use of image spatial features and research on classification methods of single aquaculture patterns. Accordingly, the comprehensive utilization of a combination of spectral information and deep learning automatic recognition technology in the feature expression and discriminant extraction of aquaculture areas needs to be further explored. In this study, using Sentinel-2 remote sensing images, a method for the accurate extraction of different algae aquaculture zones combined with spectral information and deep learning technology was proposed for the characteristics of small samples, multidimensions, and complex water components in marine aquacultural areas. First, the feature expression ability of the aquaculture area target was enhanced through the calculation of the normalized difference aquaculture water index (NDAWI). Second, on this basis, the improved deep convolution generative adversarial network (DCGAN) algorithm was used to amplify the samples and create the NDAWI dataset. Finally, three semantic segmentation methods (UNet, DeepLabv3, and SegNet) were used to design models for classifying the algal aquaculture zones based on the sample amplified time series dataset and comprehensively compare the accuracy of the model classifications for achieving accurate extraction of different algal aquaculture information within the seawater aquaculture zones. The results show that the improved DCGAN amplification exhibited a better effect than the generative adversarial networks (GANs) and DCGAN under the indexes of structural similarity (SSIM) and peak signal-to-noise ratio (PSNR). The UNet classification model constructed on the basis of the improved DCGAN-amplified NDAWI dataset achieved better classification results (Lvshunkou: OA = 94.56%, kappa = 0.905; Jinzhou: OA = 94.68%, kappa = 0.913). The algorithmic model in this study provides a new method for the fine classification of marine aquaculture area information under small sample conditions.

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Jayaraj, Kiran K., Prakash Saravanan, and Gourav Dhar Bhowmick. "Performance Evaluation of Aquaponics-Waste-Based Biochar as a Cathode Catalyst in Sediment Microbial Fuel Cells for Integrated Multitrophic Aquaculture Systems." Energies 16, no. 16 (August 10, 2023): 5922. http://dx.doi.org/10.3390/en16165922.

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The sustainable development of aquaculture faces a significant challenge due to the need for the frequent treatment of aquacultural waste. This research presents a pioneering solution by concurrently utilizing aquacultural waste to produce biochar and enhancing a sediment microbial fuel cell (SMFC)’s treatment efficacy for waste generated from the integrated multitrophic aquaculture (IMTA) system. The water quality parameters of the aquacultural pond water were analyzed, and synthetic wastewater was prepared to validate the system’s efficiency. Over a period of more than 50 days, the SMFC was operated and monitored, yielding an average chemical oxygen demand (COD) removal efficiency of 86.31 ± 2.18%. The maximum operating voltage of the SMFC reached 0.422 V on the 21st day of operation when connected to an external resistance of 975 Ω. A novel-activated aquacultural biochar catalyst was synthesized from aquaponics waste and used as a cathode catalyst, substantially improving the SMFC’s performance. Characterization studies demonstrated that the aquacultural biochar catalyst was an active electrocatalyst, accelerating the oxygen reduction reaction rate and leading to increased power output and overall efficiency of the SMFC. The SMFC utilizing the aquacultural-waste-based biochar cathode catalyst showcased the highest maximum power density, with a range of 101.63 mW/m2 (1693.83 mW/m3), and the lowest internal resistance, indicating superior performance. These results validate the reliability of implementing SMFCs in actual aquaculture systems. A novel modular design for SMFC reactor-assisted small-scale integrated poultry–fish culture systems is proposed for further practical application in real-life aquaculture settings. This research contributes to finding sustainable and effective methods for waste treatment for aquaculture, promoting the development of environmentally friendly practices in the industry.

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Mhalhel, Kamel, Maria Levanti, Francesco Abbate, Rosaria Laurà, Maria Cristina Guerrera, Marialuisa Aragona, Caterina Porcino, Marilena Briglia, Antonino Germanà, and Giuseppe Montalbano. "Review on Gilthead Seabream (Sparus aurata) Aquaculture: Life Cycle, Growth, Aquaculture Practices and Challenges." Journal of Marine Science and Engineering 11, no. 10 (October 18, 2023): 2008. http://dx.doi.org/10.3390/jmse11102008.

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Over the years, the gilthead seabream (Sparus aurata), a prominent species in Mediterranean aquaculture with an increasing production volume and aquafarming technologies, has become an important research focus. The accumulation of knowledge via several studies during the past decades on their functional and biological characteristics has significantly improved the aquacultural aspects, namely their reproductive success, survival, and growth. Despite the remarkable progress in the aquaculture industry, hatchery conditions are still far from ideal, resulting in frequent challenges at the beginning of intensive culture, entailing significant economic losses. Given its increasing importance and the persistent challenges faced in its aquacultural practices, a thorough review is essential to consolidate knowledge, and elucidate the intricate facets concerning its distribution, life cycle, growth dynamics, genetics, aquaculture methodologies, economic dimensions, and the challenges inherent to its cultivation.

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Mohamed, Naglaa M., Julie J. Enticknap, Jayme E. Lohr, Scott M. McIntosh, and Russell T. Hill. "Changes in Bacterial Communities of the Marine Sponge Mycale laxissima on Transfer into Aquaculture†." Applied and Environmental Microbiology 74, no. 4 (December 21, 2007): 1209–22. http://dx.doi.org/10.1128/aem.02047-07.

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ABSTRACT The changes in bacterial communities associated with the marine sponge Mycale laxissima on transfer to aquaculture were studied using culture-based and molecular techniques. M. laxissima was maintained alive in flowthrough and closed recirculating aquaculture systems for 2 years and 1 year, respectively. The bacterial communities associated with wild and aquacultured sponges, as well as the surrounding water, were assessed using 16S rRNA gene clone library analysis and denaturing gradient gel electrophoresis (DGGE). Bacterial richness and diversity were measured using DOTUR computer software, and clone libraries were compared using S-LIBSHUFF. DGGE analysis revealed that the diversity of the bacterial community of M. laxissima increased when sponges were maintained in aquaculture and that bacterial communities associated with wild and aquacultured M. laxissima were markedly different than those of the corresponding surrounding water. Clone libraries of bacterial 16S rRNA from sponges confirmed that the bacterial communities changed during aquaculture. These communities were significantly different than those of seawater and aquarium water. The diversity of bacterial communities associated with M. laxissima increased significantly in aquaculture. Our work shows that it is important to monitor changes in bacterial communities when examining the feasibility of growing sponges in aquaculture systems because these communities may change. This could have implications for the health of sponges or for the production of bioactive compounds by sponges in cases where these compounds are produced by symbiotic bacteria rather than by the sponges themselves.

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Md Noor, Noorashikin, and Siti Norliyana Harun. "Towards Sustainable Aquaculture: A Brief Look into Management Issues." Applied Sciences 12, no. 15 (July 25, 2022): 7448. http://dx.doi.org/10.3390/app12157448.

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Aquaculture’s role has expanded over the past two decades, with the industry contributing to nearly 50% of the overall fish production. Aquaculture production in Asia and Africa contributes a significant share of total global aquaculture output growth. Aquaculture supports livelihoods and income improvement in a number of states, despite the fact that economic situations have indeed been unfavourable and environmental concerns remain undeniable. To meet the growing demand for fish, aquaculture must expand. However, this expansion will not be sustainable unless management and planning are significantly improved. Local, national, and international management are needed to address the social, economic, and environmental problems. These provide the foundation to proper aquaculture management strategies. In considering the involved ecology, water quality, and genetics, aquaculture can have a detrimental impact on the environmental sustainability. This paper highlights the review on site selection with capacity evaluation, analysis of threats and risks, as well as certification and standards, which are all important considerations in achieving a sustainable aquaculture industry.

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Vo, Thi Thu Em, Seung-Mo Je, Se-Hoon Jung, Jaehyeon Choi, Jun-Ho Huh, and Han-Jong Ko. "Review of Photovoltaic Power and Aquaculture in Desert." Energies 15, no. 9 (April 30, 2022): 3288. http://dx.doi.org/10.3390/en15093288.

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PV (photovoltaic) capacity is steadily increasing every year, and the rate of increase is also increasing. A desert area with a large equipment installation area and abundant solar radiation is a good candidate. PV power plants installed in the desert have advantages in themselves, but when combined with desert aquacultures, additional benefits can be obtained while compensating for the shortcomings of the aquaculture industry. The importance of the aquaculture industry is increasing, with aquaculture products approaching half of the total supply of marine products due to sea environmental pollution and reduced resources. Moreover, in deserts, where marine products are difficult to obtain, aquaculture is a good way to save marine products. However, one of the many problems that complicate the introduction of aquaculture in the desert is that it is difficult to supply and demand electricity because the site is not near a viable electric grid. However, combination with PV can solve this problem. This paper investigates the solar power and aquaculture industry in the desert and explains the limitations and challenges of the solar power and aquaculture industry in the desert. Based on this, we hope to increase interest in the solar power and aquaculture industry in the desert and help with future research.

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Xu, Yue, Zhongwen Hu, Yinghui Zhang, Jingzhe Wang, Yumeng Yin, and Guofeng Wu. "Mapping Aquaculture Areas with Multi-Source Spectral and Texture Features: A Case Study in the Pearl River Basin (Guangdong), China." Remote Sensing 13, no. 21 (October 27, 2021): 4320. http://dx.doi.org/10.3390/rs13214320.

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Aquaculture has grown rapidly in the field of food industry in recent years; however, it brought many environmental problems, such as water pollution and reclamations of lakes and coastal wetland areas. Thus, the evaluation and management of aquaculture industry are needed, in which accurate aquaculture mapping is an essential prerequisite. Due to the difference between inland and marine aquaculture areas and the difficulty in processing large amounts of remote sensing images, the accurate mapping of different aquaculture types is still challenging. In this study, a novel approach based on multi-source spectral and texture features was proposed to map simultaneously inland and marine aquaculture areas. Time series optical Sentinel-2 images were first employed to derive spectral indices for obtaining texture features. The backscattering and texture features derived from the synthetic aperture radar (SAR) images of Sentinel-1A were then used to distinguish aquaculture areas from other geographical entities. Finally, a supervised Random Forest classifier was applied for large scale aquaculture area mapping. To address the low efficiency in processing large amounts of remote sensing images, the proposed approach was implemented on the Google Earth Engine (GEE) platform. A case study in the Pearl River Basin (Guangdong Province) of China showed that the proposed approach obtained aquaculture map with an overall accuracy of 89.5%, and the implementation of proposed approach on GEE platform greatly improved the efficiency for large scale aquaculture area mapping. The derived aquaculture map may support decision-making services for the sustainable development of aquaculture areas and ecological protection in the study area, and the proposed approach holds great potential for mapping aquacultures on both national and global scales.

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Løvdal, Trond, and Dagbjørn Skipnes. "Assessment of Food Quality and Safety of Cultivated Macroalgae." Foods 11, no. 1 (December 29, 2021): 83. http://dx.doi.org/10.3390/foods11010083.

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Khan, Tausif Haseeb, and Surekha M. Gupta. "Management Strategies for Mitigating Winter Box Jellyfish Bloom's Impact on Pancham Aquaculture Shrimp Farm, Palghar, India." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 15 (July 10, 2024): 194–202. http://dx.doi.org/10.56557/upjoz/2024/v45i154235.

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This abstract examines the challenge of mitigating winter box jellyfish blooms' impact on Pancham Aquaculture's shrimp farm in Palghar. The intrusion of box jellyfish during winter poses a significant threat to the sustainability and profitability of shrimp farming in the region. This study aims to explore effective management strategies to address this pressing issue. The proliferation of box jellyfish in aquaculture facilities during winter presents multifaceted challenges. Not only do these jellyfish directly threaten shrimp populations by preying on juveniles, but they also pose risks to shrimp aquaculture. This interference has led to decreased shrimp yields and profitability, highlighting the urgent need for comprehensive research and proactive measures. The study seeks to analyze the ecological and environmental triggers behind the escalation of box jellyfish presence in Pancham Aquaculture's shrimp farm. By understanding these factors, effective mitigation strategies can be developed to safeguard both shrimp aquaculture and the surrounding marine environment.

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Harohau, Daykin, Jessica Blythe, Marcus Sheaves, and Amy Diedrich. "Limits of Tilapia Aquaculture for Rural Livelihoods in Solomon Islands." Sustainability 12, no. 11 (June 4, 2020): 4592. http://dx.doi.org/10.3390/su12114592.

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Increasing pressure on coastal fisheries poses serious threats to local livelihoods and the food security of Pacific Islanders. In response, governments and development agencies have explored tilapia pond aquaculture as an alternative fish production source. Yet, evidence to date on the impact of tilapia aquaculture on rural livelihoods has been inconclusive. Drawing on the sustainable livelihood framework, we analysed the contribution of Mozambique tilapia (Oreochromis mossambicus) aquaculture to the livelihood assets and outcomes of 40 rural farmers in Solomon Islands. First, results showed that 53% of tilapia farmers were satisfied with tilapia aquaculture’s contribution to their human and social assets, while only 28% and 13% were satisfied with its contribution to their physical and financial assets, respectively. Tilapia aquaculture’s contribution to farmers’ natural assets was also limited. Second, and most importantly, there was an insignificant contribution of tilapia aquaculture to food and income security. Our results demonstrate that tilapia farmers rarely consumed tilapia, with only two of the 40 households having consumed tilapia in the seven days prior the interview. Moreover, only eight tilapia farmers sold their tilapia, which contributed 0.002–0.5% of their total weekly revenue. We argue the limited contribution of tilapia aquaculture to food and income stems from the low productivity of the available tilapia species and the low local demand for tilapia at rural markets. Given the current context of declining coastal fisheries and food insecurity concerns in rural Pacific Islands, it is unlikely that the current form of Mozambique tilapia aquaculture will be able to achieve its objective of addressing food and income security as a complement to coastal fisheries.

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ogunkalu, Oluwatosin Abidemi. "Climate Smart Aquaculture for Poverty Alleviation." Scholars Journal of Agriculture and Veterinary Sciences 10, no. 12 (December 19, 2023): 172–76. http://dx.doi.org/10.36347/sjavs.2023.v10i12.001.

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Climate change is one of the main obstacles to ensuring food security and it is crucial to know how the effects of climate change will affect the world's agricultural industry. Climate may change as a result of biological, geographical, and human forces (anthropogenic), Astronomical phenomena, alien influences, and volcanic eruptions are examples of nature activities. Aquaculture system ensure continuous yield of seafood product. For aquacultures to achieve success, aquaculture practice must be supported by climate smart innovation to achieve sustainable production, alleviate poverty, achieve climate resilience and food security, the government and other stakeholders should adopt climate smart fish farming and strictly adapt to the measures to mitigate climate change effects. This Review highlight the importance of climate smart aquaculture as solution to ensure food security and eradicate poverty.

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Bardach, John. "Aquaculture." BioScience 37, no. 5 (May 1987): 318–19. http://dx.doi.org/10.2307/1310687.

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Lorenzen, Kai. "Aquaculture." Aquaculture 146, no. 3-4 (November 1996): 299. http://dx.doi.org/10.1016/s0044-8486(96)01392-0.

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Lucas, John. "Aquaculture." Current Biology 25, no. 22 (November 2015): R1064—R1065. http://dx.doi.org/10.1016/j.cub.2015.08.013.

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Maurer, Michaela, Verena Pietzner, Holger Winkler, and Corinna Hößle. "Aquaculture: How German Preservice Teachers’ Perception Interacts with Values, Knowledge, and Conceptions of Environmental Concern When Making Purchasing Decisions." Education Sciences 13, no. 7 (June 29, 2023): 665. http://dx.doi.org/10.3390/educsci13070665.

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Responsibly using resources is an essential goal of the 2030 agenda. An overall need for 180 tonnes of fish per year is pushing the limits of sustainable fishing. Teachers can focus on this topic to enhance the environmental awareness of sustainability issues in learners (e.g., sustainable consumption, production, and supporting sustainable judgements). For this purpose, we developed a questionnaire on the topic of aquaculture using LimeSurvey and administered this survey to preservice teachers. The survey contained five open questions relating to aquaculture terms, a semantic differential with 14 adjective pairs that concern the interest in and usefulness of aquacultures; the environmental motives scale to determine the environmental concern of the teachers, and a self-developed set of items on systems—consumption knowledge, and social influence. Individuals in the target group (n = 158) indicated that they thought aquaculture products were rather useless and uninteresting, and they purchased them less. The results showed that the participants mostly correctly defined the aquaculture terms, but an overall understanding of system- and consumption-related knowledge, for example, was missing. Aquaculture seems to be associated more with profit than with nutrition or environmental concerns. We illustrate a possible barrier to the communication of less-familiar issues in society.

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Mordecai, Gideon J., Kristina M. Miller, Arthur L. Bass, Andrew W. Bateman, Amy K. Teffer, Jessica M. Caleta, Emiliano Di Cicco, et al. "Aquaculture mediates global transmission of a viral pathogen to wild salmon." Science Advances 7, no. 22 (May 2021): eabe2592. http://dx.doi.org/10.1126/sciadv.abe2592.

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Global expansion of aquaculture and agriculture facilitates disease emergence and catalyzes transmission to sympatric wildlife populations. The health of wild salmon stocks critically concerns Indigenous peoples, commercial and recreational fishers, and the general public. Despite potential impact of viral pathogens such as Piscine orthoreovirus-1 (PRV-1) on endangered wild salmon populations, their epidemiology in wild fish populations remains obscure, as does the role of aquaculture in global and local spread. Our phylogeographic analyses of PRV-1 suggest that development of Atlantic salmon aquaculture facilitated spread from Europe to the North and South East Pacific. Phylogenetic analysis and reverse transcription polymerase chain reaction surveillance further illuminate the circumstances of emergence of PRV-1 in the North East Pacific and provide strong evidence for Atlantic salmon aquaculture as a source of infection in wild Pacific salmon. PRV-1 is now an important infectious agent in critically endangered wild Pacific salmon populations, fueled by aquacultural transmission.

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Anderson, James L., Frank Asche, and Taryn Garlock. "Economics of Aquaculture Policy and Regulation." Annual Review of Resource Economics 11, no. 1 (October 5, 2019): 101–23. http://dx.doi.org/10.1146/annurev-resource-100518-093750.

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Since the Blue Revolution began in the late 1960s, global aquaculture production has grown rapidly. Aquaculture now accounts for over half of the world's fish for direct human consumption and is expected to approach two-thirds by 2030. With aquaculture's growth, a number of high-profile concerns have arisen, including pollution, feeding practices, disease management and antibiotic use, habitat use, non-native species, food safety, fraud, animal welfare, impacts on traditional wild fisheries, access to water and space, market competition, and genetics. Managing these concerns requires thoughtful and well-designed policies and regulations. This manuscript reviews the contributions natural resource economics has made to evaluating aquaculture policy and regulation. Despite their valuable contributions, however, economists have been largely underrepresented in the debate. The primary influencers of aquaculture policies and regulations have been traditional fisheries managers, environmental groups, and natural scientists. We identify many important areas that should be more thoroughly addressed by economists.

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Garba, A. A. "Economic realities and management systems in aquaculture production." Journal of Aquatic Sciences 36, no. 1 (August 3, 2021): 107–17. http://dx.doi.org/10.4314/jas.v36i1.10.

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This study reviewed and unveiled the economic sizes and managing systems in aquaculture production. The focus had been on developing new technologies and management systems in aquaculture production that can produce fish food on an economically competitive basis while still maintaining environmental health. The technique of recirculating aquaculture system (RAS) had been discussed. Economic issues such as: adequately available quality water, economic sizes, management issues, financial capabilities, various investment options, species selection, cost of production, capitalization cost of unit process, cost of pumping and bio-filtration, gas stripping and pH control, solid wastes removal, economically competitive scale, labor requirements as wellas predicted cost of production. The economic comparison of broilers and catfish production were evaluated. Also, challenges against the effective aquaculture technological application and the prospects to economic realities and management systems in aquaculture production were also highlighted. It could be concluded that economic realities and management of RAS is the soft and live wire in aquacultural development especially in developing countries like Nigeria. It is therefore, recommended that fish farmers need to engage and be trained on the use of this new fish production technology for increase production and economy benefits.

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Kathleen, M. M., L. Samuel, C. Felecia, E. L. Reagan, A. Kasing, M. Lesley, and S. C. Toh. "Antibiotic Resistance of Diverse Bacteria from Aquaculture in Borneo." International Journal of Microbiology 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/2164761.

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The administration of antimicrobials in aquaculture provides a selective pressure creating a reservoir of multiple resistant bacteria in the cultured fish and shrimps as well as the aquaculture environment. The objective of this study was to determine the extent of antibiotic resistance in aquaculture products and aquaculture’s surrounding environment in Sarawak, Malaysian Borneo. Ninety-four identified bacterial isolates constituted of 17 genera were isolated from sediment, water, and cultured organisms (fish and shrimp) in selected aquaculture farms. These isolates were tested for their antibiotic resistance against 22 antibiotics from several groups using the disk diffusion method. The results show that the highest resistance was observed towards streptomycin (85%,n=20), while the lowest resistance was towards gentamicin (1.1%,n=90). The multiple antibiotic resistant (MAR) index of the isolates tested ranged between 0 and 0.63. It was suggested that isolates with MAR index > 0.2 were recovered from sources with high risk of antibiotic resistant contamination. This study revealed low level of antibiotic resistance in the aquaculture bacterial isolates except for streptomycin and ampicillin (>50% resistance,n=94) which have been used in the aquaculture industry for several decades. Antibiotic resistant patterns should be continuously monitored to predict the emergence and widespread of MAR. Effective action is needed to keep the new resistance from further developing and spreading.

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Chen, Sujin, Dmitry S. Efremenko, Zhiyuan Zhang, and Lingkui Meng. "In-Terrestrial Aquaculture Fields Mapping from High Resolution Remote Sensing Images." Issue 05-2023, no. 05-2023 (October 2023): 135–42. http://dx.doi.org/10.33383/2023-009.

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Convolution neural networks are widely used for image processing in remote sensing. Aquacultures have an important role in food security and hence should be monitored. In this paper, a novel lightweight neural network for in-terrestrial aquaculture field retrieval from high-resolution remote sensing images is proposed. The structure of this pond segmentation network is based on the UNet architecture, providing higher training speed. Experiments are performed on Gaofen satellite datasets in Shanghai, China. The proposed network detects the inland aquaculture ponds in a shorter time than stateof-the-art neural network-based models and reaches an overall accuracy of about 90 %.

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Nogueira, Teresa, and Ana Botelho. "Metagenomics and Other Omics Approaches to Bacterial Communities and Antimicrobial Resistance Assessment in Aquacultures." Antibiotics 10, no. 7 (June 28, 2021): 787. http://dx.doi.org/10.3390/antibiotics10070787.

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The shortage of wild fishery resources and the rising demand for human nutrition has driven a great expansion in aquaculture during the last decades in terms of production and economic value. As such, sustainable aquaculture production is one of the main priorities of the European Union’s 2030 agenda. However, the intensification of seafood farming has resulted in higher risks of disease outbreaks and in the increased use of antimicrobials to control them. The selective pressure exerted by these drugs provides the ideal conditions for the emergence of antimicrobial resistance hotspots in aquaculture facilities. Omics technology is an umbrella term for modern technologies such as genomics, metagenomics, transcriptomics, proteomics, culturomics, and metabolomics. These techniques have received increasing recognition because of their potential to unravel novel mechanisms in biological science. Metagenomics allows the study of genomes in microbial communities contained within a certain environment. The potential uses of metagenomics in aquaculture environments include the study of microbial diversity, microbial functions, and antibiotic resistance genes. A snapshot of these high throughput technologies applied to microbial diversity and antimicrobial resistance studies in aquacultures will be presented in this review.

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Nathanailides, Cosmas, Markos Kolygas, Konstantina Choremi, Theodoros Mavraganis, Evangelia Gouva, Kosmas Vidalis, and Fotini Athanassopoulou. "Probiotics Have the Potential to Significantly Mitigate the Environmental Impact of Freshwater Fish Farms." Fishes 6, no. 4 (December 8, 2021): 76. http://dx.doi.org/10.3390/fishes6040076.

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Probiotics for freshwater fish farming can be administered as single or multiple mixtures. The expected benefits of probiotics include disease prophylaxis, improved growth, and feed conversion parameters, such as the feed conversion rate (FCR) and specific growth rate (SGR). In the current work, we review the impact of probiotics on freshwater finfish aquaculture. Data were gathered from articles published during the last decade that examined the effects of probiotics on fish growth, FCR, and water quality in freshwater fishponds/tanks. While the expected benefits of probiotics are significant, the reviewed data indicate a range in the level of effects, with an average reduction in ammonia of 50.7%, SGR increase of 17.1%, and FCR decrease of 10.7%. Despite the variability in the reported benefits, probiotics appear to offer a practical solution for sustainable freshwater aquaculture. Disease prophylaxis with probiotics can reduce the need for antibiotics and maintain gut health and feed conversion. Considering that fish feed and waste are two significant parameters of the aquaculture ecological footprint, it can be argued that probiotics can contribute to reducing the environmental impact of aquaculture. In this direction, it would be beneficial if more researchers incorporated water quality parameters in future aquaculture research and protocols to minimize aquaculture’s environmental impact.

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Mugwanya, Muziri, Mahmoud A. O. Dawood, Fahad Kimera, and Hani Sewilam. "Biofloc Systems for Sustainable Production of Economically Important Aquatic Species: A Review." Sustainability 13, no. 13 (June 29, 2021): 7255. http://dx.doi.org/10.3390/su13137255.

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The increasing global population has led to an increase in food demand; consequently, aquaculture is one of the food production sectors that has offered opportunities to alleviate hunger, malnutrition, and poverty. However, the development of a sustainable aquaculture industry has been hindered by the limited availability of natural resources as well as its negative impact on the surrounding environment. Hence, there is an urgent need to search for better aquacultural production systems that, despite their high productivity and profitability, utilize fewer resources such as water, energy, land, and capital in conjunction with a negligible impact on the environment. Biofloc technology (BFT) is one of the most exciting and promising sustainable aquaculture systems; it takes into account the intensive culture of aquatic species, zero water exchange, and improved water quality as a result of beneficial microbial biomass activity, which, at the same time, can be utilized as a nutritious aquaculture feed, thus lowering the costs of production. Furthermore, BFT permits the installation of integrated multi-trophic aquaculture (IMTA) systems in which the wastes of one organism are utilized as feed by another organism, without a detrimental effect on co-cultured species. This review, therefore, highlights the basics of BFT, factors associated with BFT for the successful production of aquatic species, the significance of this food production system for the sustainable production of economically important aquatic species, its economic aspects, drawbacks, limitations, and recommended management aspects for sustainable aquaculture.

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Zhang, Qiong, and Youngwoon Kim. "Modeling of energy intensity in aquaculture: Future energy use of global aquaculture." SDRP Journal of Aquaculture, Fisheries & Fish Science 2, no. 1 (2018): 1–8. http://dx.doi.org/10.25177/jaffs.2.1.3.

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Hilbish, Jerry. "Teaching Aquaculture Introduction to Aquaculture Matthew Landau." BioScience 42, no. 10 (November 1992): 790–91. http://dx.doi.org/10.2307/1312000.

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Fayram, Andrew. "Aquaculture 101 or… Random Thoughts on Aquaculture." Fisheries 39, no. 11 (November 2, 2014): 567. http://dx.doi.org/10.1080/03632415.2014.966819.

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Frankic, Anamarija, and Carl Hershner. "Sustainable aquaculture: developing the promise of aquaculture." Aquaculture International 11, no. 6 (2003): 517–30. http://dx.doi.org/10.1023/b:aqui.0000013264.38692.91.

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Abeysinghe, D. H., A. Shanableh, and B. Rigden. "Biofilters for water reuse in aquaculture." Water Science and Technology 34, no. 11 (December 1, 1996): 253–60. http://dx.doi.org/10.2166/wst.1996.0287.

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Aquaculture is a rapidly expanding industry in Australia and around the world. The majority of aquaculture operations employ flow through systems whereby residual feed and metabolic products are discharged to a nearby water body. In many countries, the discharge of nutrients rich aquaculture waters has contributed to the degradation of water quality in receiving water bodies. Aquaculture's dependency on water resources ultimately makes water recycling an attractive waste management option. Submerged flow biofilters, utilising a filter media with specific surface area of approximately 141m2/m3, were used to remove nitrogen and phosphorus from a synthetic fish farm water. Three biofilter systems were tested for nitrification, nitrification followed by denitrification, and combined nutrients removal. Successful carbon removal and nitrification were achieved in the nitrification system. The nitrification/denitrification biofilters achieved complete denitrification and nitrogen removal. The cyclic aerated/unaerated combined nutrients removal system achieved approximately 40 percent phosphorus removal, complete nitrification and 40 percent denitrification. The study demonstrated the viability of using biofilters for nutrients removal from fish farm waters. Biofilters are readily designed and constructed in modular form which makes such systems particularly useful for water quality management in aquaculture.

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A, Semwal. "Phytotherapy Toxicity in Aquaculture." Advances in Pharmacology and Clinical Trials 8, no. 3 (July 6, 2023): 1–4. http://dx.doi.org/10.23880/apct-16000219.

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The fish disease significantly affects the aquaculture industry and causes economic harm. Antibiotics, chemotherapeutics and other synthetic pharmaceuticals are continuously used by farmers to mitigate infectious diseases. Phytotherapy without side effects is an eco-friendly, socio-economic and modern approach to mitigate disease. Toxicological and pharmacological studies are prerequisites for phytotherapy-related research and help to decide a safe dose for the main experiment and commercial aqua products. In toxicity studies, LD50 and LC50 are reliable and widely used acute toxicity parameters.

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Duong, Viet Bao, Dung Nhan Tran, and Phong Thanh Le. "CURRENT SITUATIONS AND INFLUENTIAL FACTORS OF BIOTECHNOLOGICAL DEVELOPMENT IN AQUACULTURE IN DONG THAP PROVINCE." Scientific Journal of Tra Vinh University 1, no. 27 (June 19, 2019): 104–15. http://dx.doi.org/10.35382/18594816.1.27.2017.135.

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Research on "Current state Analysis and Influential Factors of Biotechnological Development in Aquaculture in Dong Thap Province" aims to evaluate the current situation and potential of biotechnological development in aquaculture production in order to make a scientific basis for the building of research programs and biotechnological applications in the aquaculture sector of Dong Thap province from 2016 to 2020 with a vision to 2030 by surveying 75 samples. Methodologies of descriptive statistical analysis, factor analysis, correlation analysis and regression analysis were used with SPSS software. Besides, SWOT analysis and consultancy of experts were made at three workshops. The results show that the areas of biotechnology that needed to promote applied research in the aquaculture sector were disease prevention, aquacultural technology and environmental treatment. In order to develop biotechnology, a breakthrough strategy needed to be implemented in Dong Thap province as follows: (i) Increased investment in a number of key laboratories; (ii) Development of "4 Houses" linkages in research,transfer and application of biotechnology; (iii) Human resources development in biotechnology. Proposed action plans: (i) Center construction, Institute of biotechnology in Cao Lanh city; (ii) Human resources training for biotechnology; (iii) Application of biotechnology in aquaculture to be implemented from 2016 to 2020 with a vision to 2030 to improve the efficiency of biotechnological application for rural and socio-economic development in Dong Thap province in the future.

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Zhang, Yuxing. "Thinking Inside the Box." Cultural Politics 19, no. 2 (July 1, 2023): 159–76. http://dx.doi.org/10.1215/17432197-10434321.

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Abstract Container aquaculture—a method that uses shipping boxes equipped with information technologies—is presented in China as an emblem of smart farming, and as a technological solution to the environmental degradation in natural water resources resulting from intensified aquacultural production. Container aquaculture aims at creating an orderly, self-contained ecosystem wherein the fish are managed in tandem with the water milieu via data governance. Its infrastructure operatively automates aquacultural practices into optimizable modules and programs biological and mechanical processes into interlocked components bearing distinctive functionalities within the artificial ecosystem. This article argues that the case of container aquaculture shows that algorithmically regulated and automated ecosystematic management does not always fulfill its promise; one still needs to navigate a dense web of interspecies associations filled with gaps and crossings between modes of being and values. Datafication is just one way to know and organize. An algorithmically controlled ecosystem cannot always accommodate the open-endedness of more-than-human ecologies. Drawing on works by Tsing, Stengers, and Satsuka, this article reappropriates what should be counted as the “smart” in farming by resituating it as a world-making practice in ecological collectives rather than in an abstract ecosystem, eschewing the fantasy of a singular criterion of evaluation and control.

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Nathanailides, Cosmas, Markos Kolygas, Maria Tsoumani, Evangelia Gouva, Theodoros Mavraganis, and Hera Karayanni. "Addressing Phosphorus Waste in Open Flow Freshwater Fish Farms: Challenges and Solutions." Fishes 8, no. 9 (August 31, 2023): 442. http://dx.doi.org/10.3390/fishes8090442.

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Legislation and interest exists to protect and restore freshwater and marine ecosystems from the environmental impact of aquaculture. However, aquaculture-induced eutrophication remains a major environmental concern. Water soluble phosphorus, uneaten feed, feces, and metabolic waste from farmed fish increase phosphorus concentrations in adjacent waters. In open freshwater fish farms, in particular, the effects can be more immediate, as excess phosphorus is introduced directly into ecosystems. Several intestinal enzymes, transporters, and regulating factors have been implicated in farmed fish dietary phosphorus retention. For example, alkaline phosphatase and other transporters aid in the absorption of phosphorus in the anterior intestine, while pH, calcium, and vitamin D influence these enzymes and transporters. This process may also be influenced by intestinal morphology and the gut microbiome. To reduce phosphorus pollution from open flow fish farms, a thorough understanding of the processes that affect nutrient retention and absorption, as well as the impact of dietary factors, anti-nutritional substances, and intestinal morphology, is required. Aquaculture can be made more sustainable by reducing phosphorus release. This can be achieved by optimizing feed composition, adding functional feed ingredients, managing gut health, and treating effluent aquaculture waters with bioremediation and absorbing materials. Anti-nutritional factors can be mitigated through processing and through the use of functional feed additives. Addressing these issues will reduce aquaculture’s environmental impact, ensuring aquatic ecosystem health and global food security. In addition, treating effluent aquaculture waters with bioremediation and absorbing materials can remove phosphorus from the water, preventing it from entering the environment. This can further reduce the environmental impact of aquaculture and help to ensure the sustainability of this sector.

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Parker, Nick C. "Sustainable Aquaculture." Progressive Fish-Culturist 60, no. 3 (June 1998): 242–45. http://dx.doi.org/10.1577/1548-8640(1998)060<0242:uoafpt>2.0.co;2.

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Lee, Kuo-Kau. "Sustainable Aquaculture." Journal of Marine Biology and Aquaculture 1, no. 2 (2015): 1–2. http://dx.doi.org/10.15436/2381-0750.15.e001.

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O'Donncha, Fearghal, and Jon Grant. "Precision Aquaculture." IEEE Internet of Things Magazine 2, no. 4 (December 2019): 26–30. http://dx.doi.org/10.1109/iotm.0001.1900033.

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Li, Daoliang, and Chenhong Li. "Intelligent aquaculture." Journal of the World Aquaculture Society 51, no. 4 (August 2020): 808–14. http://dx.doi.org/10.1111/jwas.12736.

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Goldburg, Rebecca, Anjan Datta, Andrea Finger-Stich, and Biksham Gujja. "Shrimp Aquaculture." Environment: Science and Policy for Sustainable Development 39, no. 1 (January 1997): 37–42. http://dx.doi.org/10.1080/00139157.1997.10544052.

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Verdegem, Marc. "Aquaculture engineering." Aquaculture Research 38, no. 16 (December 6, 2007): 1790–91. http://dx.doi.org/10.1111/j.1365-2109.2007.01844.x.

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RIEMER, DONALD N. "Duckweed Aquaculture." Soil Science 157, no. 3 (March 1994): 200–201. http://dx.doi.org/10.1097/00010694-199403000-00012.

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Nash, Colin E. "Ecological Aquaculture." Aquaculture 214, no. 1-4 (November 2002): 422–24. http://dx.doi.org/10.1016/s0044-8486(02)00400-3.

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Costa-Pierce, Barry A. "Rural Aquaculture." Aquaculture 220, no. 1-4 (April 2003): 919–20. http://dx.doi.org/10.1016/s0044-8486(02)00537-9.

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Fleming, Ann E., and Patrick W. Hone. "Abalone aquaculture." Aquaculture 140, no. 1-2 (March 1996): 1–4. http://dx.doi.org/10.1016/0044-8486(95)01183-8.

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Schreck, Carl B. "Salmon aquaculture." Aquaculture 134, no. 1-2 (July 1995): 185–86. http://dx.doi.org/10.1016/0044-8486(95)90079-9.

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Webber, Harold H. "Aquaculture Technologies." Proceedings of the annual workshop - World Mariculture Society 3, no. 1-4 (February 25, 2009): 129–34. http://dx.doi.org/10.1111/j.1749-7345.1972.tb00054.x.

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Lin, Junda. "Sustainable Aquaculture." Journal of Environment Quality 33, no. 2 (2004): 796. http://dx.doi.org/10.2134/jeq2004.0796.

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Hecht, Thomas. "Urban Aquaculture." African Journal of Aquatic Science 31, no. 1 (January 2006): 163–64. http://dx.doi.org/10.2989/16085910609503887.

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Journal articles on the topic 'Aquaculture'

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