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Fishes
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Biofloc Technology in Aquaculture
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Biofloc Technology in Aquaculture

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Sustainable Aquaculture".

Deadline for manuscript submissions: 10 January 2025 | Viewed by 3626

Special Issue Editor

Dr. Luís Henrique da Silva Poersch

E-Mail Website
Guest Editor
Marine Aquaculture Station, Federal University of Rio Grande—FURG, Rua do Hotel, nº 02, Rio Grande 96210-030, RS, Brazil
Interests: shrimp production in BFT systems; integrated multi-trophic aquaculture; aquaculture and its environmental impacts

Special Issue Information

Dear Colleagues,

Aquaculture production is essential to meet the increasing protein demands of the world's population in the coming decades. Technological advances are essential to increase productivity in order to guarantee food security, reduce poverty and minimize possible environmental impacts. In this sense, production in bioflocs systems allows for increased productivity, reduced water use, greater biosecurity and a lower production of effluents that are released into the environment. There are still a series of topics that must be studied to improve the production of fish and shrimp, among other organisms, with bioflocs. In this way, we invite researchers to contribute their original research, reviews, case studies and/or recent progress/scenarios on the production of aquatic organisms with bioflocs.

Dr. Luís Henrique da Silva Poersch
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fishes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • aquaculture in BFT systems
  • improvement of immunity
  • biofloc and fertilization
  • TSS control in BFT systems
  • nutrient management in BFT systems
  • energy production from bioflocs
  • role of microorganisms in the BFT system
  • IMTA and bioflocs
  • denitrification processes

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Published Papers (3 papers)

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Research

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18 pages, 693 KiB  
Article
Effects of Stocking Density of the River Shrimp Cryphiops caementarius on Physiological and Performance Responses in a Biofloc System
by Carlos Andres Mendez, María Cristina Morales and Katherina Brokordt
Fishes 2024, 9(10), 377; https://doi.org/10.3390/fishes9100377 - 25 Sep 2024
Viewed by 527
Abstract
This study aimed to evaluate and compare the effects of biofloc technology (BFT) and clear water (CW) on water quality physiological and productive performance of juvenile freshwater Northern River shrimp, Cryphiops caementarius under three stocking densities (100, 200, and 400 shrimp m−2 [...] Read more.
This study aimed to evaluate and compare the effects of biofloc technology (BFT) and clear water (CW) on water quality physiological and productive performance of juvenile freshwater Northern River shrimp, Cryphiops caementarius under three stocking densities (100, 200, and 400 shrimp m−2). Shrimp with an initial body weight of 0.44 ± 0.07 g were stocked in 18 rectangular fiberglass tanks with a water volume 150 L for 290 days. During the experiment, water quality parameters stayed within acceptable ranges for shrimp growth. The highest survival rate was recorded in BFT treatments; however, the growth performance of shrimp in the treatments with the lowest stocking density was higher than that with the highest stocking density, regardless of whether BFT or CW was used. Transcriptional levels of heat shock protein (Hsp70) and superoxide dismutase (SOD) showed significant differences (p < 0.05) between treatments, particularly in BFT. These results indicate that an initial stocking density of 200 shrimp m−2 appears to be appropriate for shrimp juveniles cultured in a BFT system. Thus, this technology emerges as an effective tool for river shrimp farmers looking to increase their stocking densities and improve the efficiency of their production systems in arid zones. Full article
(This article belongs to the Special Issue Biofloc Technology in Aquaculture)
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14 pages, 7253 KiB  
Article
The Effect of Artificial Substrate and Carbon Source Addition on Bacterial Diversity and Community Composition in Water in a Pond Polyculture System
by Kun Guo, Mumin Shi, Xiaoli Huang, Liang Luo, Shihui Wang, Rui Zhang, Wei Xu, Guoliang Ruan and Zhigang Zhao
Fishes 2024, 9(3), 80; https://doi.org/10.3390/fishes9030080 - 20 Feb 2024
Viewed by 1808
Abstract
The use of artificial substrates and biofloc technology can favor fish culture and improve water quality. The aim of this study was to evaluate whether artificial substrates and carbon source additions modify the microbial activity of water bodies. The diversity and structure of [...] Read more.
The use of artificial substrates and biofloc technology can favor fish culture and improve water quality. The aim of this study was to evaluate whether artificial substrates and carbon source additions modify the microbial activity of water bodies. The diversity and structure of microflora in the water after adding artificial substrates and carbon sources to the ponds were analyzed using high-throughput sequencing based on the V3-V4 region of 16S rRNA genes. The results showed that there was no difference in the richness and diversity of intestinal microflora between the control and experimental groups. Principal coordinate analysis (PCoA) and nonmetric multidimensional scaling (NMDS) showed that artificial substrate and carbon source addition changed the structure of the microflora. The results of a linear discriminant analysis (LDA) effect size (LefSe) indicated 11 biomarkers in the EGˍst group. Spearman correlation heatmap analysis showed that environmental factors affected the bacterial communities, and the results of a redundancy analysis indicated that chemical oxygen demand was a critical factor in controlling the bacterial communities in the water. These results provide an understanding of the effect of artificial substrate and carbon source addition on bacterial diversity and community composition in water. Full article
(This article belongs to the Special Issue Biofloc Technology in Aquaculture)
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Review

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16 pages, 310 KiB  
Review
The Effectiveness of Biofloc Technology and Its Application Prospects in Sea Cucumber (Apostichopus japonicus) Aquaculture: A Review
by Haoran Xiao, Shufeng Li, Zitong Wang, Ye Tian, Qiwei Zuo, Fenglin Tian, Yongjie Wang, Chong Zhao and Jun Ding
Fishes 2024, 9(11), 457; https://doi.org/10.3390/fishes9110457 - 10 Nov 2024
Viewed by 629
Abstract
This review aims to advance the development of biofloc technology (BFT), providing more sustainable and efficient practices for the farming of the Japanese sea cucumber (Apostichopus japonicus). BFT is a sustainable aquaculture method that promotes nutrient recycling and effective carbon source [...] Read more.
This review aims to advance the development of biofloc technology (BFT), providing more sustainable and efficient practices for the farming of the Japanese sea cucumber (Apostichopus japonicus). BFT is a sustainable aquaculture method that promotes nutrient recycling and effective carbon source management, offering significant advantages such as improving water quality, enhancing growth performance, and boosting the physiological activity and disease resistance of cultured animals. In A. japonicus farming, the optimal carbon source is glucose, and the ideal carbon-to-nitrogen (C/N) ratio ranges between 15 and 20. Microbial additives, such as the Bacillus species, have been shown to enhance biofloc formation and growth, as well as the immune responses in A. japonicus. However, the technology also faces limitations, including finding suitable biofloc culture protocols that match the physiological habits of A. japonicus and potential challenges with biofloc stability under varying environmental conditions. Based on existing research, this review discusses these limitations in the farming of A. japonicus. Additionally, it compares biofloc farming models for other economically important aquatic species. By addressing these key aspects, this review offers insights to enhance BFT performance, ultimately contributing to more efficient and sustainable A. japonicus aquaculture practices. Full article
(This article belongs to the Special Issue Biofloc Technology in Aquaculture)
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