World Aquaculture: Environmental Impacts and Troubleshooting Alternatives

Martínez‐Porchas, Marcel; Córdova, Luis Rafael Martínez

doi:10.1100/2012/389623

Cited by 150 publications

(82 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, the use of inert feed in fish and shrimp farming is not only the major operative cost of the activity, but also the main cause of environmental impacts (Piedrahita ). For instance, each ton of shrimp harvested from semi‐intensive systems generates 56–117 kg of N, which are discharged into the effluents (Martínez‐Porchas & Martínez‐Córdova ). These variations are mainly related to the protein content and feed conversion ratio (FCR), which is dependent on diverse factors inherent to the quality of feedstuffs, as well as the feeding practices (Tacon & Forster ).…”

Section: Introductionmentioning

confidence: 99%

Microbial‐based systems for aquaculture of fish and shrimp: an updated review

Martínez‐Córdova¹,

Emerenciano

Miranda‐Baeza

et al. 2014

Reviews in Aquaculture

174

110

View full text Add to dashboard Cite

The continuous development of world aquaculture demands new strategies and alternatives aimed to achieve sustainability. The use or microorganisms in aquaculture has greatly evolved during the last two decades. From being considered as a potential threat, during the last years, they have been used as probiotics and inclusively as food source for fish and crustacean. The microbial‐based systems represent one of the most viable strategies to achieve a sustainable aquaculture. In short, these systems are based on the promotion of microbial proliferation, either autotrophic or heterotrophic microorganisms; these microbes are expected to use, recycle and transform the excess of nutrients from faeces, dead organisms, unconsumed food and diverse metabolites into biomass, which would be further consumed by the cultured organisms. Successful results on using microbial‐based systems have been documented around the world; however, there are key aspects to consider and yet to experiment before a system could be implemented. Some of those aspects are analysed in this manuscript, while new advances in the use of microbial‐based systems and recommendations are also presented.

show abstract

Section: Introductionmentioning

confidence: 99%

Microbial‐based systems for aquaculture of fish and shrimp: an updated review

Martínez‐Córdova¹,

Emerenciano

Miranda‐Baeza

et al. 2014

Reviews in Aquaculture

174

110

View full text Add to dashboard Cite

show abstract

“…For instance, aquaculture has been accused of being an unsustainable activity, because of the effluents discharged to the environment which contain excess of organic matter, nitrogenous compounds, toxic metabolites, and elevated rates of chemical and biochemical oxygen demands [2]. Other serious accusations include the competition for land and water, the introduction of exotic species around the globe, the overexploitation of ocean fish stocks to obtain fishmeal and fish oil, the dispersion of pathogens, the development of antibiotic resistance genes, etc.…”

Section: Aquaculture: State Of the Art And Challengesmentioning

confidence: 99%

Biofloc Technology (BFT): A Tool for Water Quality Management in Aquaculture

Emerenciano¹,

Córdova²,

et al. 2017

View full text Add to dashboard Cite

Biofloc technology (BFT) is considered the new "blue revolution" in aquaculture. Such technique is based on in situ microorganism production which plays three major roles: (i) maintenance of water quality, by the uptake of nitrogen compounds generating in situ microbial protein; (ii) nutrition, increasing culture feasibility by reducing feed conversion ratio (FCR) and a decrease of feed costs; and (iii) competition with pathogens. The aggregates (bioflocs) are a rich protein-lipid natural source of food available in situ 24 hours per day due to a complex interaction between organic matter, physical substrate, and large range of microorganisms. This natural productivity plays an important role recycling nutrients and maintaining the water quality. The present chapter will discuss some insights of the role of microorganisms in BFT, main water quality parameters, the importance of the correct carbon-to-nitrogen ratio in the culture media, its calculations, and different types, as well as metagenomics of microorganisms and future perspectives.

show abstract

“…All authors read and approved the final manuscript. 1 Departamento de Tecnología de Alimentos de Origen Animal, Centro de Investigación en Alimentación y Desarrollo, A.C., Km 0.6 Carretera a La Victoria, Hermosillo, Sonora, Mexico.…”

unclassified

“…Pathogens have undermined shrimp aquaculture [1,2], and for the past two decades, antibiotic use has been the most important and effective strategy to control and prevent bacterial infections [3,4]. However, the use of antibiotics may have negative consequences for human and environmental health, inducing resistance to antibiotics and promoting transference of antibiotic resistance genes [5,6].…”

Section: Introductionmentioning

confidence: 99%

Bacterial biota of shrimp intestine is significantly modified by the use of a probiotic mixture: a high throughput sequencing approach

et al. 2017

View full text Add to dashboard Cite

The use of probiotics is a common practice of current shrimp aquaculture. Despite the immunophysiological responses that have been measured in shrimp exposed to probiotics, no information is currently available on the effect of this practice on the intestinal microbiota. The objective of this work was to evaluate the effect of a probiotic mixture on the intestinal microbiota of shrimp cultured under farm conditions. A culture-independent method based on high-throughput-sequencing (16S rRNA) was used to examine intestinal bacterial communities. A traditional system (without probiotics) was used as the reference. Targeted metagenomics analysis revealed that the probiotic mixture was based on bacteria in the phyla Proteobacteria and Firmicutes. A total of 23 species of bacteria were detected in the probiotic mixture; of these, 11 were detected in the intestine of shrimp reared in both systems, and 12 were novel for the system. Eight of the novel species were detected in shrimp cultured with the probiotic mixture; however, none of these novel species were related to marine or inclusively aquacultural environments, and only one (Bacillus subtilis) was recognized as probiotic for shrimp. The use of the probiotic mixture modified the bacterial profile of the shrimp intestine; however, most of the bacteria incorporated into the intestine were nonindigenous to the marine environment with no previous evidence of probiotic effects on any marine organism. The use of this probiotic mixture may represent a risk of causing environmental imbalances, particularly because farms using these types of probiotic mixtures discharge their effluents directly into the ocean without prior treatment.

show abstract

World Aquaculture: Environmental Impacts and Troubleshooting Alternatives

Cited by 150 publications

References 60 publications

Microbial‐based systems for aquaculture of fish and shrimp: an updated review

Microbial‐based systems for aquaculture of fish and shrimp: an updated review

Biofloc Technology (BFT): A Tool for Water Quality Management in Aquaculture

Bacterial biota of shrimp intestine is significantly modified by the use of a probiotic mixture: a high throughput sequencing approach

Contact Info

Product

Resources

About