Journal of Ocean University of China

, Volume 18, Issue 1, pp 177–184 | Cite as

Effects of Temperature and Salinity on Oxygen Consumption and Ammonium Excretion Rate of ♀ Epinephelus fuscoguttatus × ♂ E. lanceolatus Juveniles

  • Daochao Xing
  • Xiefa Song
  • Lei Peng
  • Yawei Cheng
  • Jianming Zhai


The impact of water temperature (24, 27, 30 and 33°C) and salinity (15, 20, 25, 30 and 33) on oxygen consumption (OCR) and ammonium excretion rate (AER) of ♀ Epinephelus fuscoguttatus × ♂ E. lanceolatus hybrid grouper juveniles (9.39 ± 0.07 g) were investigated under the fed and un-fed conditions. The results showed that the OCR and AER were significantly (P < 0.05) affected by temperature and salinity under both fed and un-fed conditions. When temperature was 24–33°C, the OCR and AER of fed hybrid grouper juveniles were 85.68%–129.52% and 125.78%–287.63%, respectively, higher than those of un-fed hybrid grouper juveniles. The O/N ratio, protein use (Pu), Q10(respiration) and Q10(excretion) of fed hybrid grouper juveniles were 14.43–24.01, 28.35%–48.48%, 1.69 and 3.01, respectively. The O/N ratio, Pu, Q10(respiration), Q10(excretion) of un-fed hybrid grouper juveniles were 20.39–31.79, 22.16%–34.34%, 1.23 and 1.17, respectively. When salinity was 15–33, the OCR and AER of fed hybrid grouper juveniles increased by 87.42%–116.85% and 215.38%–353.57%, respectively, over those of un-fed hybrid grouper juveniles. The O/N ratio and Pu of fed hybrid grouper juveniles were 14.48–17.78, 39.36%–49.43%, respectively. The O/N ratio and Pu of un-fed hybrid grouper juveniles were 20.39–31.79 and 22.16%–34.34%, respectively. The specific dynamic action (SDA) of hybrid grouper juveniles was mainly related to protein metabolism. The results had a guiding significance to the large-scale intensive aquaculture of hybrid grouper juveniles.

Key words

Epinephelus fuscoguttatus × ♂ E. lanceolatus temperature salinity oxygen consumption rate ammonia excretion rate 


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This work was supported by the project of National Science and Technology Supporting Plan (No. 2011BAD 13B04). The fish, environmental and production data were supported by Laizhou MingBo Aquatic Co., Ltd., Yantai, China.


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Copyright information

© Science Press, Ocean University of China and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Daochao Xing
    • 1
  • Xiefa Song
    • 1
  • Lei Peng
    • 1
  • Yawei Cheng
    • 1
  • Jianming Zhai
    • 2
  1. 1.College of FisheriesOcean University of ChinaQingdaoChina
  2. 2.Laizhou MingBo Aquatic Co., Ltd.YantaiChina

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