Nursery of young Litopenaeus vannamei post-larvae reared in biofloc- and microalgae-based systems

Schveitzer, Rodrigo; Lorenzo, Marco Antônio de; Vieira, Felipe do Nascimento; Pereira, Scheila Anelise; Mouriño, José Luiz Pedreira; Seiffert, Walter Quadros; Andreatta, Edemar Roberto

doi:10.1016/j.aquaeng.2017.07.001

Cited by 25 publications

(28 citation statements)

References 27 publications

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“…Samocha et al (2007) recommend maintaining TSS for L. vannamei nursery <500 mg L -1 . However, Schveitzer et al (2017) observed that TSS maintained between 500 and 700 mg L -1 for PL (PL 6 -PL 18 ) of L. vannamei did not affect rearing. In this study, TSS around 650 mg L -1 did not affect survival in treatments.…”

Section: Discussionmentioning

confidence: 88%

Pre-Nursery of Shrimp Post-Larvae Reared in Biofloc System Under Different Stocking Densities

et al. 2019

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This study evaluated different stocking densities during pre-nursery of Pacific white shrimp post-larvae (PL) reared in a biofloc system. The tanks (60 L) were stocked with PL stage 5 (PL 5) under five densities (80, 100, 120, 140 and 160 PLs L-1), in triplicate, resulting in 15 experimental units. PLs were fed nine times a day using commercial feed. Molasses was added in all treatments four times a day at an average carbon: nitrogen ratio of 14.7: 1. The experiment was carried out until the PLs reached PL 20 stage, and during this time, water quality variables, survival, weight gain and survival to salinity stress were all evaluated. For treatments above 100 PLs L-1 , total suspended solids were higher than recommended (700 mg L-1). Also, the treatment with 160 PL L-1 had higher total ammonia nitrogen peaks (>10 mg L-1), resulting in lower survival in this treatment. No differences were observed between treatments in the other performance parameters evaluated (final weight and survival to salinity stress). It was concluded that pre-nursery of Pacific white shrimp can be performed using densities up to 140 post-larvae L-1 in a biofloc system without compromising shrimp growth performance.

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Section: Discussionmentioning

confidence: 88%

Pre-Nursery of Shrimp Post-Larvae Reared in Biofloc System Under Different Stocking Densities

et al. 2019

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“…The concentration of nitrate in water increases probably because of nitrification, which involves the conversion of ammonia into nitrite and subsequently to nitrate. Therefore, in-pond measurements of both nitrate and ammonia are crucial to assess the extent of nitrification (Ebeling et al 2006;Schveitzer et al 2017). In the present study, a gradual decline in the level of ammonia (from 7.37 to 2.05 mg/L) and increase in level of nitrate (from 0.9 to 4.22 mg/L) from the inlet to the outlet point were observed, which suggest the role of microbial activity in optimising water for fish survival.…”

Section: Discussionmentioning

confidence: 99%

Water quality assessment of East Kolkata Wetland with a special focus on bioremediation by nitrifying bacteria

Saha

Sarkar

Bandyopadhyay

2021

Water Science and Technology

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East Kolkata Wetlands (EKW) is designated as International Ramsar site and are the hotspot for large-scale wastewater aquaculture practices. However, the continued surveillance of physicochemical properties of water and application of an eco-friendly approach are essential to ensure safe aquaculture practices. In the present study, we assessed the seasonal variation in physicochemical parameters of water across EKW and investigated the role of nitrifying bacteria as probiotics. We statistically analyzed various physicochemical properties of water samples from EKW. Results of the statistical analysis indicated a significant variation in all the physicochemical parameters across the selected water bodies of EKW (p < 0.01). We isolated and enumerated Nitrosomonas sp. and Nitrobacter sp. and assessed their ability to degrade trichloroethylene (TCE). The role of Nitrosomonas and Nitrobacter sp. were further investigated and established through a small-scale experiment. Two microbial isolates, NSW3 and NBW2, displayed superior TCE degradation ability at pH 5, and the application of these strains as probiotics were found to improve the quality of water and survival rate of fishes in the treated experimental tanks. Our findings suggest that the application of the above mixed bacterial cultures in aquaculture could be an effective and environment-friendly approach for safe and productive aquaculture operations.

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“…Although special cares are required to reducing affectations by the epidermis mucus naturally accumulated (Vinatea et al 2018), fish can grow better in BFT than in RAS. However, it is essential to pay attention to excessive growth of the bioflocs, since an excess of suspended matter can obstruct the gills of the cultivated organisms (Emerenciano et al, 2013; Schveitzer et al 2017; Harun et al 2019). The operating range for settleable solids using BFT is 10–15 mL L −1 and 25–50 mL L −1 for shrimp and tilapia, respectively (Hargreaves 2013).…”

Section: Strategies To Eliminate Nitrogenous Compounds In Pondsmentioning

confidence: 99%

The nitrification process for nitrogen removal in biofloc system aquaculture

Robles‐Porchas

Gollas‐Galván

Martínez‐Porchas

et al. 2020

Reviews in Aquaculture

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Aquaculture is an economic activity that faces the unavoidable problem of water quality detriment, which is mainly generated by the improper management of production ponds, including inadequate water circulation and aeration, accumulation of undigested food residues, excretion of metabolic by‐products by the cultivated organisms and other. In addition, the increase in suspended organic matter together with the presence and generation of nitrogen compounds can severely affect the physiology of the animal, leading to significant losses in production. Ammonia (NH3), nitrite (NO2) and nitrate (NO3) are toxic in different scales and environmental conditions; therefore, reducing their concentrations in the culture units has paramount relevance. In this regard, bioflocs are an efficient alternative to transform nitrogen compounds into a non‐toxic form, taking advantage of the capabilities of the microbial communities conforming them. Also, nitrogen can be harnessed and incorporated as organic nitrogen, making the biofloc a source of useful natural food for the cultivated organism. The substantial reduction in the rate of water exchange favoured by the biofloc technology (BFT) is a beneficial advantage for both the production systems and the environment, diminishing the risk of introducing pathogens into the pond in parallel with the improvement in the water quality of effluents. Ammonia oxidation is an advantage adding value to the BFT systems and is discussed in this review.

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Nursery of young Litopenaeus vannamei post-larvae reared in biofloc- and microalgae-based systems

Cited by 25 publications

References 27 publications

Pre-Nursery of Shrimp Post-Larvae Reared in Biofloc System Under Different Stocking Densities

Pre-Nursery of Shrimp Post-Larvae Reared in Biofloc System Under Different Stocking Densities

Water quality assessment of East Kolkata Wetland with a special focus on bioremediation by nitrifying bacteria

The nitrification process for nitrogen removal in biofloc system aquaculture

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