Environmental Best Management Practices for Aquaculture

Tucker, Craig S.; Hargreaves, John A.

doi:10.1002/9780813818672

Cited by 62 publications

(3 citation statements)

References 108 publications

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“…In recirculating aquaculture systems, due to high operational costs, oxygen supplementation must be judiciously estimated in order to cover both the physiological needs of the cultured species [42] and the chemical and biological consumption of oxygen due to the transformation processes of metabolites [43]. Understanding the metabolism of sturgeons is therefore relevant for improving RAS profitability.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Metabolic Rates of Young of the Year Beluga (Huso huso), Sterlet (Acipenser ruthenus) and Bester Hybrid Reared in a Recirculating Aquaculture System

Crețu

Guriencu

Dediu

et al. 2021

Fishes

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In the present study, oxygen consumption of two sturgeon species, beluga (Huso huso), sterlet (Acipenser ruthenus), and their hybrid reared in a recirculating aquaculture system were compared over body intervals from 54–107 g to determine the interspecific variation of metabolic rate. Metabolic rates were measured using the intermittent-flow respirometry technique. Standard oxygen consumption rates (SMR, mg O2 h−1) of sterlet were 30% higher compared with beluga and 22% higher compared with bester hybrid. The routine metabolic rate (RMR, mg O2 h−1) averaged 1.58 ± 0.13 times the SMR for A. ruthenus, 1.59 ± 0.3 for H. huso, and 1.42 ± 0.15 for the hybrid bester. However, the study revealed no significant differences (p > 0.05) between mean values of SMR and RMR for beluga and bester hybrid. The scaling coefficient reflected a closed isometry for the hybrid (b = 0.97), while for the purebred species the coefficient of 0.8 suggests a reduction in oxygen consumption with increasing body mass. These findings may contribute to understanding the differences in growth performances and oxygen requirements of the studied species reared in intensive aquaculture system.

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Section: Discussionmentioning

confidence: 99%

Comparison of Metabolic Rates of Young of the Year Beluga (Huso huso), Sterlet (Acipenser ruthenus) and Bester Hybrid Reared in a Recirculating Aquaculture System

Crețu

Guriencu

Dediu

et al. 2021

Fishes

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“…High stocking density can cause low oxygen levels, where in the evaluated fish farms, there is no control of the amount of fish per m 2 and fish farmers estimate this value. According to (Tucker & Hargreaves, 2009), D.O. concentration <2 mg/L impair the metabolic processes of respiration, feeding, growth, reproduction, and fish become more vulnerable and predisposed to diseases and parasites.…”

Section: Discussionmentioning

confidence: 99%

Quality of water from fish farms and histopathological analysis of tilapia ( Oreochromis sp.) in São José de Ribamar and Paço do Lumiar, state of Maranhão, Brazil

Nascimento

Pereira

Martins

et al. 2021

Aquaculture Research

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The present work aimed to use histopathological gill biomarkers in tilapia (Oreochromis sp.) and physicochemical and microbiological analyses of water in the evaluation of impacts to fish farms located in São José de Ribamar and Paço do Lumiar, state of Maranhão, northeastern Brazil. Histopathological analyses performed on gills indicated morphological alterations in all tissues analysed. The lesions found were as follows: epithelial lifting, lamellar epithelium hyperplasia, blood vessel congestion, lamellar fusion, blood sinus dilation and lamellar aneurysm. Temperature, D.O., salinity and nitrite values obtained were considered within recommended standards. The pH verified in a pisciculture located in Paço do Lumiar is considered potentially stressful to fish and, therefore, predisposing to pathologies. Ammonia in a fish farm in São José de Ribamar is considered sublethal. In all fish farms evaluated, the presence of high counts of total coliforms for fish farms of São José de Ribamar was verified. Escherichia coli was verified in a cultivation in São José de Ribamar indicating faecal contamination of the nursery water by the flow of some source of domestic effluent. The integration of studies with physical, chemical and biological variables generates important data to evaluate the quality of fish production.

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“…We note, however, that an estimated 80% of the plastic pollution entering the ocean is from terrestrial sources (Jambeck et al, 2015). In general, responsible farmers have operational methods that attempt to reduce these losses (such as removing mesh for the winter months from plots containing larger seed that cannot be consumed by ducks) and also have programs to identify and collect the majority of these losses and bring them to appropriate shore based disposal areas (Jensen and Zajicek, 2008). Best management practice guidelines for shellfish aquaculture have been developed either solely by industry or by industry in collaboration with government in most major shellfish growing areas in North America (e.g., Leavitt, 2004;Oesterling and Luckenbach, 2008;Flimlin et al, 2010;PCSGA, 2011;Dewey et al, 2011;BCSGA, 2013) and these plans all address the importance of waste management, including plastic screening.…”

Section: Referencementioning

confidence: 99%