Interaction of Water Hardness and pH on Growth of Silver Catfish, <i>Rhamdia quelen</i>, Juveniles

Copatti, Carlos Eduardo; Garcia, Luciano de Oliveira; Cunha, Mauro Alves da; Baldisserotto, Bernardo; Kochhann, Daiani

doi:10.1111/j.1749-7345.2011.00501.x

Cited by 14 publications

(21 citation statements)

References 21 publications

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“…In agreement with the abovementioned, the present study demonstrated that the development of silver catfish juveniles in water without HA was considerably lower at pH 5.5 than at pH 6.5 after 40 days. These results are also consistent with previous findings: silver catfish exposed to pH 5.5 showed lower growth compared to pH 7.0-7.5 (COPATTI et al, 2005;2011b); and no significant effect of pH was observed in the 6.0-8.0 range (COPATTI et al, 2011a).…”

Section: Discussionsupporting

confidence: 83%

“…Search for homeostasis at acidic pH apparently interferes with the energy demand in silver catfish, which can cause a delay in development (COPATTI et al, 2005;2011b). In agreement with the abovementioned, the present study demonstrated that the development of silver catfish juveniles in water without HA was considerably lower at pH 5.5 than at pH 6.5 after 40 days.…”

Section: Discussionsupporting

confidence: 80%

“…This demand diverts the amount of energy otherwise destined for growth to the osmoregulatory mechanisms (SOENGAS et al, 2007). Juveniles of silver catfish Rhamdia quelen maintained at pH 5.5 presented lower growth than those kept at pH 7.0-7.5 (COPATTI et al, 2005;2011b), probably due to a decrease in food consumption. The optimum pH range for growth of this species is 6.0-8.0 (COPATTI et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

“…These HA concentrations were chosen because they are within the range observed in the water of the Rio Negro Basin (KÜCHLER et al, 2000). The pH 5.5 decreases growth (COPATTI et al, 2011b) and pH 6.5 is within the optimum range (COPATTI et al, 2011a). Animals were fed daily to satiation at 9 am with the same commercial feed provided in the acclimation period.…”

Section: Experimental Designmentioning

confidence: 99%

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Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

et al. 2016

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

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Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

et al. 2016

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“…The increase of waterborne Ca 2+ can then reduce Cl -loss in freshwater fish and the activity of the Cl -/HCO 3 cotransporter, reducing NO 2 -uptake and toxicity. Studies have demonstrated that an increase of waterborne CaCl 2 has a stronger effect on reducing acute NO 2 -toxicity than an increase of waterborne NaCl in some species (TOMASSO et al, 1980;WEIRICH et al, 1993;KROUPOVA et al, 2005), but not in others (ATWOOD et al, 2001;KROUPOVA et al, 2005 (COPATTI et al, 2011a(COPATTI et al, , 2011b and high ammonia (FERREIRA et al, 2013) on silver catfish growth.…”

Section: Introductionmentioning

confidence: 99%

Interação do cálcio e nitrito na água: sobrevivência, crescimento, parí¢metros hematológicos e metabólicos em jundiá

Neves¹,

Souza²,

Santos³

et al. 2017

Bol. Inst. Pesca

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The objective of this study was to determine the effect of different waterborne nitrite (NO 2 -) and calcium (Ca 2+ ) levels on growth, biochemical and hematological parameters of silver catfish juvenile (Rhamdia quelen). Fish were submitted to low (0.05 mg L -1 ) or high (1.3 mg L -1 ) NO 2 and low (7 mg L -1 ) or high (14 mg L -1 ) Ca 2+ levels (four replicates) for 60 days. At the end of the experimental period, fish exposed to high NO 2 showed lower weight gain, biomass and specific growth rate than those maintained at low NO 2 , irrespective of Ca 2+ levels.

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Nitrogenous and phosphorus excretions in juvenile silver catfish (Rhamdia quelen) exposed to different water hardness, humic acid, and pH levels

Golombieski

Koakoski

Becker

et al. 2012

Fish Physiol Biochem

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This study examined ammonia, urea, creatinine, protein, nitrite, nitrate, and phosphorus (P) excretion at different water hardness, humic acid, or pH levels in silver catfish (Rhamdia quelen) juveniles. The fish were exposed to different levels of water hardness (4, 24, 50, or 100 mg L(-1) CaCO3), humic acid (0, 2.5, or 5.0 mg L(-1)), or pH (5.0, 6.0, 7.0, 8.0, or 9.0) for 10 days. The overall measured nitrogen excretions were 88.1% (244-423 μmol kg(-1 )h(-1)) for ammonia, 10.9% (30-52 μmol kg(-1 )h(-1)) for creatinine, 0.02% (0.05-0.08 μmol kg(-1 )h(-1)) for protein, 0.001 % (0.002-0.004 μmol kg(-1 )h(-1)) for urea, 0.5% (0.64-3.6 μmol kg(-1 )h(-1)) for nitrite, and 0.5% (0.0-6.9 μmol kg(-1 )h(-1)) for nitrate, and these proportions were not affected by water hardness or humic acid levels. The overall P excretion in R. quelen was 0.14-2.97 μmol kg(-1) h(-1). Ammonia excretion in R. quelen usually was significantly higher in the first 12 h after feeding, and no clear effect of water hardness, humic acid levels, and pH on this daily pattern of ammonia excretion could be observed. Water hardness only affected the ammonia and P excretion of R. quelen juveniles in the initial and fifth days after transfer, respectively. The exposure of this species to humic acid increased ammonia excretion after 10 days of exposure but did not affect P excretion. An increase in pH decreased ammonia and increased creatinine excretion but did not change P excretion in R. quelen. Therefore, when there is any change on humic acid levels or pH in the culture of this species, nitrogenous compounds must be monitored because their excretion rates are variable. On the other hand, P excretion rates determined in the present study are applicable to a wide range of fish culture conditions.

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Interaction of Water Hardness and pH on Growth of Silver Catfish, Rhamdia quelen, Juveniles

Cited by 14 publications

References 21 publications

Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

Interação do cálcio e nitrito na água: sobrevivência, crescimento, parí¢metros hematológicos e metabólicos em jundiá

Nitrogenous and phosphorus excretions in juvenile silver catfish (Rhamdia quelen) exposed to different water hardness, humic acid, and pH levels

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Interaction of Water Hardness and pH on Growth of Silver Catfish, Rhamdia quelen, Juveniles

Cited by 14 publications

References 21 publications

Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

Interação do cálcio e nitrito na água: sobrevivência, crescimento, parí­¢metros hematológicos e metabólicos em jundiá

Nitrogenous and phosphorus excretions in juvenile silver catfish (Rhamdia quelen) exposed to different water hardness, humic acid, and pH levels

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Product

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Interação do cálcio e nitrito na água: sobrevivência, crescimento, parí¢metros hematológicos e metabólicos em jundiá