Effects of suspended solids in the survival and haematological parameters of pacu juveniles (
            <i>Piaractus mesopotamicus</i>
            ) in a biofloc technology culture system

Pellegrin, Lucas; Nitz, Lílian Fiori; Pinto, Daniel De Sá Britto; Copatti, Carlos Eduardo; Wasielesky, Wilson; Garcia, Luciano de Oliveira

doi:10.1111/are.15575

Cited by 9 publications

(4 citation statements)

References 41 publications

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“…Particularly in confined and intensive aquatic environments like those established in biofloc systems, the oxidative equilibrium of aquatic organisms can be adversely affected. Numerous stressors have been investigated in biofloc systems, including salinity [65], temperature [66], and pH [67], among others [18,68,69].…”

Section: Discussionmentioning

confidence: 99%

Biological Responses of Oyster Crassostrea gasar Exposed to Different Concentrations of Biofloc

Costa,

Carvalho,

Holanda

et al. 2023

Fishes

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Oysters have the potential to be a part of more sustainable farming systems, such as multitrophic systems integrated into biofloc systems, due to their filtration activity, which enables them to act as organic consumers. However, the stress experienced by animals in a system with a high organic load can compromise their productive performance. The objective of this study was to evaluate the biological responses of Crassostrea gasar oysters when exposed to different concentrations of total suspended solids in biofloc systems. The oysters were exposed to four different concentrations of solids for 28 days. Hall effect sensors were installed on the outside of the shells to detect the movement of the oyster valves. Also, biochemical and histological analyses were conducted to assess the biological responses of the oysters to exposure to varying levels of solids. A difference in valve opening detected by the Hall sensors was observed from the second week of culture, indicating a relationship between shell closure and higher concentrations of suspended solids present in the system. In terms of biochemical analysis, a significant increase in lipid damage was observed in treatments with medium and high levels of total suspended solids compared with the control group. Conversely, no changes were observed in the gill structure of the oysters caused by the concentrations of suspended solids in the system when compared with the control. According to the analyses of gill activity and biochemistry, it is suggested that C. gasar should be cultured with total suspended solids at less than 200 mg/L. Oysters cultivated in a biofloc system keep their shells closed when subjected to high concentrations of total suspended solids; concentrations of total suspended solids below 200 mg/L do not induce oxidative stress, changes in behavior or histological alterations in C. gasar oysters cultivated in a biofloc system.

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Section: Discussionmentioning

confidence: 99%

Biological Responses of Oyster Crassostrea gasar Exposed to Different Concentrations of Biofloc

Costa,

Carvalho,

Holanda

et al. 2023

Fishes

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“…The negative impacts on water quality parameters can be reduced by using low TSS concentrations, starting the culture at approximately 100 mg/L, and reducing variations over time. Respiratory rates can increase in situations where O 2 uptake is not efficient, leading to a CO 2 /HCO 3 imbalance in the blood [194][195][196], which may explain the respiratory alkalosis observed in fish in the BFT system [190]. Biofloc farming presents several challenges that require careful consideration before starting.…”

Section: Biofloc: What Goes Wrong?mentioning

confidence: 99%

“…Further research is needed to determine the optimal TSS concentration range for pacu juveniles in BFT systems Pellegrin et al [190] 1,500 3,000 4,000 5,000 6,000 7,000 Piaractus mesopotamicus…”

Section: Biofloc: What Goes Wrong?mentioning

confidence: 99%

“…While pacu juveniles have been shown to exhibit some tolerance to higher TSS concentrations, a prolonged exposure to such conditions may cause stress and lead to reduced growth rates, decreased immune function, and increased susceptibility to diseases. Therefore, it is essential to manage TSS concentrations carefully in BFT systems to ensure optimal fish health and growth Pellegrin et al [190] 250 500 750…”

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confidence: 99%

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Biofloc Technology (BFT) in Aquaculture: What Goes Right, What Goes Wrong? A Scientific-Based Snapshot

Khanjani,

Sharifinia,

Emerenciano

2024

Aquaculture Nutrition

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Aquaculture is a crucial industry that can help meet the increasing demand for aquatic protein products and provide employment opportunities in coastal areas and beyond. If incorrectly manage, traditional aquaculture methods can have negative impacts on the environment and natural resources, including water pollution and overuse of wild fish stocks as aquafeed ingredients. Biofloc technology (BFT) may offer a promising solution to some of these challenges by promoting a cleaner and sustainable production system. BFT converts waste into bioflocs, which serve as a natural food source for fish and shrimp within the culture system, reducing the need for external inputs, such as feed and chemicals. Moreover, BFT has the potential to improve yields and economic performance while promoting efficient resource utilization, such as water and energy. Despite its numerous advantages, BFT presents several challenges, such as high energy demand, high initial/running costs, waste (effluent, suspended solids, and sludge) management, opportunistic pathogens (vibrio) spread, and a lack of understanding of operational/aquatic/microbial dynamics. However, with further training, research, and innovation, these challenges can be overcome, and BFT can become a more widely understood and adopted technique, acting as an effective method for sustainable aquaculture. In summary, BFT offers a cleaner production option that promotes circularity practices while enhancing performance and economic benefits. This technique has the potential to address several challenges faced by the aquaculture industry while ensuring its continued growth and protecting the environment. A more broad BFT adoption can contribute to meeting the increasing demand for aquaculture products while reducing the industry’s negative impact on the environment and natural resources. In this context, this review provides an overview of the advantages and challenges of BFT and highlights key technical, biological, and economic aspects to optimize its application, promote further adoption, and overcome the current challenges.

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Growth performance and hematological parameters of pacu (Piaractus mesopotamicus) juveniles in different concentrations of total suspended solids in the BFT system

et al. 2023

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Effects of suspended solids in the survival and haematological parameters of pacu juveniles ( Piaractus mesopotamicus ) in a biofloc technology culture system

Cited by 9 publications

References 41 publications

Biological Responses of Oyster Crassostrea gasar Exposed to Different Concentrations of Biofloc

Biological Responses of Oyster Crassostrea gasar Exposed to Different Concentrations of Biofloc

Biofloc Technology (BFT) in Aquaculture: What Goes Right, What Goes Wrong? A Scientific-Based Snapshot

Growth performance and hematological parameters of pacu (Piaractus mesopotamicus) juveniles in different concentrations of total suspended solids in the BFT system

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