Physico-chemical and microbiological characteristics of water for fish production using small ponds

Ntengwe, F.W.; Edema, Mojisola O.

doi:10.1016/j.pce.2008.06.032

Cited by 22 publications

(22 citation statements)

References 17 publications

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“…Bacterial counts in the water analysed were in the range of 10 4 to 10 5 CFU/100 mL. These results were lower than values recorded by Ntengwe and Edema (2008) in the order of 10 6 CFU/mL of fishing culture pond water, but higher than those observed by Ahmed and Naim (2003) in the tilapia culture pond (10 3 -10 4 CFU/mL). Average counts of bacteria were higher in the site of fish culture then in the pre-and post-culture sites of the Padre Azevedo reservoir.…”

Section: Discussioncontrasting

confidence: 55%

“…The intensive fish culture in cages can lead to the eutrophisation of water bodies and to the emergence of deleterious effects on the water quality, such as the blooms of toxic cyanobacteria that are harmful for wildlife and humans. There are several works on the effect of fish culture in cages on water quality (Ntengwe et al, 2008;Azevedo et al, 2011;Degefu et al, 2011;Schenone et al, 2011). Cage fish farming is usually performed in small water bodies such as fish ponds and reservoirs, which are often used for plant irrigation.…”

Section: Introductionmentioning

confidence: 99%

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The influence of fish culture in floating net cages on microbial indicators of water quality

et al. 2013

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This work was carried out to analyse the microbiological parameters of the water quality of a reservoir used for the irrigation and culture of tilapia (Oreochromis niloticus) in floating net cages. The physico-chemical parameters, counts of mesophilic total aerobic bacteria, total and thermotolerant coliforms and fecal streptococci, and the presence of Escherichia coli in samples of water collected in three sites of the reservoir (pre-culture site, culture site, post-culture site) were analysed. The levels of ammonia (0.047-0.059 mg/L), nitrite (0.001-0.021 mg/L) and total phosphorus (0.050-0.355 mg/L) in the water did not show significant differences (p > 0.05) between sampling sites. The levels of total bacteria in the water varied between 1.3 x 10 4 and 67.3 x 10 4 CFU/100 mL. The MPN values of thermotolerant coliforms (< 930 MPN/100 mL) were within values recommended for water used for fish culture and/or irrigation. The presence of E. coli and fecal streptococci were verified in 48% and 56% of analysed samples, respectively. The site with floating net cages showed more samples contaminated with E. coli and fecal streptococci than other sampling points.Keywords: fish culture, tilapia, cage, coliforms, faecal streptococci. Influência da piscicultura em tanques-rede sobre os microrganismos indicadores da qualidade de água ResumoEste trabalho foi realizado para analisar os parâmetros microbiológicos da qualidade da água de um reservatório destinado a irrigação e à cultivo de tilapia do Nilo (Oreochromis niloticus) em tanques redes. Foi realizada análise de parâmetros físico-químicos, quantificação de bactérias totais aeróbias mesófilas, coliformes totais e termotolerantes, estreptococos fecais e a detecção de E. coli em amostras de água coletada em três pontos distintos do açude (pré-cultivo, cultivo, pós-cultivo). Os níveis de amônia (0,047-0,059 mg/L), nitrito (0,001-0,021 mg/L) e fósforo total (0,050-0,355 mg/L) na água não apresentaram diferenças significativas (p > 0.05) entre os pontos de coleta. As contagens de bactérias aeróbias mesófilas variaram entre 1,3 x 10 4 e 67,3 x 10 4 UFC/100 mL nas amostras de água. O NMP de coliformes termotolerantes (< 930 NMP/100 mL) se apresentou dentro do limite permitido para águas doces destinadas a piscicultura e/ou irrigação. A presença de E. coli foi constatada em 48% e de estreptococos fecais em 56% das amostras de água analisadas. O local de cultivo de tilápia em tanques-rede apresentou maior número de amostras contaminadas com E. coli e estreptococos fecais que outros pontos de amostragem.

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Section: Discussioncontrasting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

The influence of fish culture in floating net cages on microbial indicators of water quality

et al. 2013

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“…Because global coverage of ponds has been drastically underestimated, and rates of carbon sequestration in small lakes and ponds are nearly double that of larger waterbodies, inland waters are now believed to process about 1 petagram yr −1 more C than previously thought (Downing 2010) and may dominate terrestrial global carbon processing (Meyers and Ishiwatari 1993, Cole et al 2007, Boyd et al 2010, Downing 2010 Substantial gaps in our understanding of small ponds in the global carbon cycle still remain, however. Most studies focus specifically on aquaculture ponds (Xinglong and Boyd 2006, Ntengwe and Edema 2008, Boyd et al 2010, and of those studies that do focus on small natural waterbodies, most overlook the diversity of pond types and the heterogeneity of pond wildlife that can occur across landscapes (Williams 2004).…”

Section: Introductionmentioning

confidence: 99%

Variations in sediment organic carbon between different types of small natural ponds along Druridge Bay, Northumberland, UK

Gilbert

Taylor

Cooke

et al. 2014

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Small natural ponds from Druridge Bay, Northumberland (UK), were sampled to investigate the variations in sediment organic carbon (OC) content among pond types. Sediment OC was highest in uncompacted sediments from permanent ponds with extensive natural vegetation (means ranged between 7.68 and 12.86% OC) but lower in compacted sediments (mean 3.72% OC) or from ponds in arable or pasture fields (mean 3.44% OC) and from adjacent soil controls (means of 3.13-3.38% OC). The extent of 4 distinct pond types (permanent naturally vegetated, arable field, grass pasture field, and dune slack) varied across years. This study highlights ecological variations among pond types that can result in large variations in sediment OC content and, combined with annual variations to the extent of ponds, poses significant implications for upscaling carbon burial rates based solely on combined surface area.

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“…Waters with moderate to high alkalinity are better for fish culture because they suffer minor changes of water pH over the day and over the entire production cycle. In that condition, fish are not frequently exposed to acidic or alkaline stress which may impair its growth rate and make it susceptible to disease (NTENGWE; EDEMA, 2008).…”

Section: Introductionmentioning

confidence: 99%

Single or paired increase of total alkalinity and hardness of water for cultivation of Nile tilapia juveniles, Oreochromis niloticus

et al. 2012

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ABSTRACT. The present work aimed at evaluating the effects of single or paired increase of water's total alkalinity (TA) and total hardness (TH) on the performance of Nile tilapia juveniles' growth and culture water quality. Twenty five 25-L outdoor polyethylene aquaria were used to hold experimental fish (0.82 ± 0.06 g; 10 fish per aquarium) for 6 weeks. There were two conditions of TA (low or high) and of TH (moderate or high) in the culture water, obtained by the application of different salts (CaCO 3 , Na 2 CO 3 and CaSO 4 ) upon a previously acidified water, all at the same rate. Water quality and growth performance variables were observed in each replicate. The acidification of the supply water with HCl has resulted in significantly lower final body weight (p < 0.05). Except for the Na 2 CO 3 , growth performance of tilapia has improved significantly after CaCO 3 liming or CaSO 4 application (p < 0.05) and no significant difference was detected between these last two fish groups (p > 0.05). It was concluded that beyond a minimum level of TA (≥ 20 mg L CaCO 3 ), it is also important that fish culture waters have a TH/TA ratio higher than 1.Keywords: calcium carbonate, calcium sulfate, fish culture, liming, sodium carbonate.Aumento isolado ou combinado da alcalinidade e dureza da água de cultivo de juvenis de tilápia do Nilo, Oreochromis niloticus RESUMO. O presente trabalho teve como objetivo avaliar os efeitos do aumento isolado ou combinado da alcalinidade total (AT) e da dureza total (DT) da água no desempenho produtivo de juvenis de tilápia do Nilo e na qualidade da água de cultivo. Vinte e cinco aquários de polietileno de 25 litros foram utilizados, cada um contendo dez juvenis de tilápia (0,82 ± 0,06 g), que foram cultivados durante o período de seis semanas. Havia duas condições de AT (baixa ou alta) e duas de DT (moderada ou alta) que foram obtidas a partir da aplicação de diferentes sais (CaCO 3 , Na 2 CO 3 and CaSO 4 ) em água previamente acidificada com HCl, todos na mesma taxa. Após seis semanas, os peixes mantidos em água acidificada apresentaram peso corporal significativamente menor que o observado no grupo controle (p < 0,05). Exceto pelo Na 2 CO 3 , o desempenho produtivo da tilápia melhorou significativamente após a aplicação de CaCO 3 ou CaSO 4 na água (p < 0,05), não havendo diferença significativa entre esses dois últimos grupos (p > 0,05). Concluiuse que além de níveis mínimos de AT (≥ 20 mg L CaCO 3 ), é também importante que a água de cultivo de peixes apresente relação DT/AT maior que um.Palavras-chave: carbonato de cálcio, sulfato de cálcio, piscicultura, calagem, carbonato de sódio.

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Physico-chemical and microbiological characteristics of water for fish production using small ponds

Cited by 22 publications

References 17 publications

The influence of fish culture in floating net cages on microbial indicators of water quality

The influence of fish culture in floating net cages on microbial indicators of water quality

Variations in sediment organic carbon between different types of small natural ponds along Druridge Bay, Northumberland, UK

Single or paired increase of total alkalinity and hardness of water for cultivation of Nile tilapia juveniles, Oreochromis niloticus

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