The effect of low pH on physiology, stress status and growth performance of turbot (Psetta maxima L.) cultured in recirculating aquaculture systems

Vasco C. Mota, Jochem Hop, Luís A. Sampaio, Leon T.N. Heinsbroek, Marc C.J. Verdegem, Ep H. Eding, Johan A.J. Verreth

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We evaluated the effect of low pH and low and high total ammonia nitrogen (TAN) concentrations on the physiology, stress status and the growth performance of turbot in RAS. Two experiments were conducted. In Experiment 1, turbot (466 g) were grown at control (pH 7.5; TAN ~0.5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 55 days. In Experiment 2, turbot (376 g) were grown at control (pH 7.5; TAN ~0.5 mg/L), low pH and low TAN (pH 5.7; TAN ~5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 59 days. In Experiment 1, final body weight, feed intake and growth were significantly lower and FCR significantly higher in turbot exposed to low pH and high TAN. In Experiment 2, only growth was significantly lower in turbot exposed to treatment low pH and high TAN as compared to fish in the control treatment and low pH and low TAN. Osmoregulation and stress indicators measured were within normal levels. In conclusion, turbot grew equally well in a water pH of 7.5 or 5.7 provided a low TAN. In contrast, low pH combined with a high TAN impaired turbot performance.

LanguageEnglish
Pages3456-3467
JournalAquaculture Research
Volume49
Issue number10
DOIs
Publication statusPublished - Oct 2018

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aquaculture system
Scophthalmus maximus
recirculating aquaculture systems
turbot
physiology
growth performance
ammonia
nitrogen
effect
experiment
osmoregulation

Keywords

  • aquaculture
  • fish
  • NH-N
  • nitrification
  • total ammonia nitrogen (TAN)

Cite this

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title = "The effect of low pH on physiology, stress status and growth performance of turbot (Psetta maxima L.) cultured in recirculating aquaculture systems",
abstract = "We evaluated the effect of low pH and low and high total ammonia nitrogen (TAN) concentrations on the physiology, stress status and the growth performance of turbot in RAS. Two experiments were conducted. In Experiment 1, turbot (466 g) were grown at control (pH 7.5; TAN ~0.5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 55 days. In Experiment 2, turbot (376 g) were grown at control (pH 7.5; TAN ~0.5 mg/L), low pH and low TAN (pH 5.7; TAN ~5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 59 days. In Experiment 1, final body weight, feed intake and growth were significantly lower and FCR significantly higher in turbot exposed to low pH and high TAN. In Experiment 2, only growth was significantly lower in turbot exposed to treatment low pH and high TAN as compared to fish in the control treatment and low pH and low TAN. Osmoregulation and stress indicators measured were within normal levels. In conclusion, turbot grew equally well in a water pH of 7.5 or 5.7 provided a low TAN. In contrast, low pH combined with a high TAN impaired turbot performance.",
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author = "Mota, {Vasco C.} and Jochem Hop and Sampaio, {Lu{\'i}s A.} and Heinsbroek, {Leon T.N.} and Verdegem, {Marc C.J.} and Eding, {Ep H.} and Verreth, {Johan A.J.}",
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The effect of low pH on physiology, stress status and growth performance of turbot (Psetta maxima L.) cultured in recirculating aquaculture systems. / Mota, Vasco C.; Hop, Jochem; Sampaio, Luís A.; Heinsbroek, Leon T.N.; Verdegem, Marc C.J.; Eding, Ep H.; Verreth, Johan A.J.

In: Aquaculture Research, Vol. 49, No. 10, 10.2018, p. 3456-3467.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - The effect of low pH on physiology, stress status and growth performance of turbot (Psetta maxima L.) cultured in recirculating aquaculture systems

AU - Mota, Vasco C.

AU - Hop, Jochem

AU - Sampaio, Luís A.

AU - Heinsbroek, Leon T.N.

AU - Verdegem, Marc C.J.

AU - Eding, Ep H.

AU - Verreth, Johan A.J.

PY - 2018/10

Y1 - 2018/10

N2 - We evaluated the effect of low pH and low and high total ammonia nitrogen (TAN) concentrations on the physiology, stress status and the growth performance of turbot in RAS. Two experiments were conducted. In Experiment 1, turbot (466 g) were grown at control (pH 7.5; TAN ~0.5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 55 days. In Experiment 2, turbot (376 g) were grown at control (pH 7.5; TAN ~0.5 mg/L), low pH and low TAN (pH 5.7; TAN ~5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 59 days. In Experiment 1, final body weight, feed intake and growth were significantly lower and FCR significantly higher in turbot exposed to low pH and high TAN. In Experiment 2, only growth was significantly lower in turbot exposed to treatment low pH and high TAN as compared to fish in the control treatment and low pH and low TAN. Osmoregulation and stress indicators measured were within normal levels. In conclusion, turbot grew equally well in a water pH of 7.5 or 5.7 provided a low TAN. In contrast, low pH combined with a high TAN impaired turbot performance.

AB - We evaluated the effect of low pH and low and high total ammonia nitrogen (TAN) concentrations on the physiology, stress status and the growth performance of turbot in RAS. Two experiments were conducted. In Experiment 1, turbot (466 g) were grown at control (pH 7.5; TAN ~0.5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 55 days. In Experiment 2, turbot (376 g) were grown at control (pH 7.5; TAN ~0.5 mg/L), low pH and low TAN (pH 5.7; TAN ~5 mg/L) or low pH and high TAN (pH 5.7; TAN ~50 mg/L) for 59 days. In Experiment 1, final body weight, feed intake and growth were significantly lower and FCR significantly higher in turbot exposed to low pH and high TAN. In Experiment 2, only growth was significantly lower in turbot exposed to treatment low pH and high TAN as compared to fish in the control treatment and low pH and low TAN. Osmoregulation and stress indicators measured were within normal levels. In conclusion, turbot grew equally well in a water pH of 7.5 or 5.7 provided a low TAN. In contrast, low pH combined with a high TAN impaired turbot performance.

KW - aquaculture

KW - fish

KW - NH-N

KW - nitrification

KW - total ammonia nitrogen (TAN)

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DO - 10.1111/are.13812

M3 - Article

VL - 49

SP - 3456

EP - 3467

JO - Aquaculture Research

T2 - Aquaculture Research

JF - Aquaculture Research

SN - 1355-557X

IS - 10

ER -