Comparison of bacterial communities in channel catfish Ictalurus punctatus culture ponds of an industrial ecological purification recirculating aquaculture system

Abstract

Pond aquaculture is the primary practice of the freshwater aquaculture industry worldwide with respect to both output and area (Tang, Han, Mao, Zhang, & Shan, 2016), providing many employment opportunities and safe aquatic products (Edwards, 2015). However, pond aquaculture also has adverse effects on the environment (Li et al., 2011), being a cause of water eutrophication in China and worldwide (Lemonnier, Hochard, Nakagawa, Courties, & Rodier, 2017). In contrast, pond industrial eco-aquaculture systems recycle and reuse the aquaculture water, reducing the negative effects on the ecological environment (Qu, Zhang, Jia, Liu, & Yang, 2017).The industrial recirculating aquaculture system was developed to improve the efficiency and sustainability of intensive aquaculture

Community Structure of Protease-Producing Bacteria Cultivated From Aquaculture Systems: Potential Impact of a Tropical Environment

“…Therefore, exploring a harmless and recyclable technology for reducing excessive organic matter in aquaculture system is necessary to ensure the sustainable development of aquaculture and for environmental protection. Microorganisms such as potential probiotic biocontrol candidates play important roles in diseases resistance and improvement of water quality ( Blancheton et al, 2013 ; Hucheng et al, 2020 ). Abundant enzymes produced by microorganisms, such as protease, lipase, and amylase, can effectively decompose the excessive bait and other organic matter, which play a key role in material transformation and energy metabolism in aquaculture system.…”

Multi-Strain Tropical Bacillus spp. as a Potential Probiotic Biocontrol Agent for Large-Scale Enhancement of Mariculture Water Quality

“…Furthermore, with the enhancement of awareness of quality and safety of aquatic products, the growing concern for antibiotic-resistant microorganisms has led to strategies of alternative disease prevention methods, such as the application of non-pathogenic bacteria as potential alternative biocontrol agents ( Vaseeharan and Ramasamy, 2003 ; Dash et al, 2017 ; Wei et al, 2021 ). Microorganisms such as potential probiotic biocontrol candidates based on the principle of competitive exclusion and immune stimulants play critical roles in preventing diseases, improving water quality, increasing the quantity and quality of aquaculture animals, and serving as potential food sources for aquatic animals ( Moriarty, 1997 ; Blancheton et al, 2013 ; Dash et al, 2017 ; Hucheng et al, 2020 ; Wei et al, 2021 ). Although many probiotic biocontrol candidates offer a promising alternative to chemical and antibiotics in aquaculture, a process of screening and optimizing probiotic biocontrol candidates for particular aquatic animals plays an important role to make them species specific ( Verschuere et al, 2000 ; Sun et al, 2010 ; Sadat Hoseini Madani et al, 2018 ; Wei et al, 2021 ).…”