An acute increase in water temperature can increase free amino acid concentrations in the blood, brain, liver, and muscle in goldfish (Carassius auratus)

Yunhao Wang, Guofeng Han, Cuong V. Pham, Kiyohiko Koyanagi, Yandejia Song, Ryunosuke Sudo, Johan Marc Jose Lauwereyns, John F. Cockrem, Mitsuhiro Furuse, Vishwajit Surchowdhury

Research output: Contribution to journalArticle

Abstract

Water temperature directly affects the body temperature in fish, so increasing water temperatures in oceans and rivers will lead to increases in fish body temperatures. Whilst a range of responses of fish to increases in water temperature have been measured, amino acid metabolism in a fish under high water temperature (HT) conditions has not been investigated. The aim of this study was to determine the effects of an acute increase in water temperature on oxygen consumption, plasma cortisol concentrations, and free amino acid concentrations in plasma and several tissues in goldfish (Carassius auratus). Oxygen consumption and plasma cortisol concentrations were increased in goldfish exposed to HT (30 ± 1 °C) for 200 min compared with goldfish at a control water temperature (CT 17 ± 1 °C). Oxygen consumption and plasma cortisol concentrations in both groups of fish combined were positively correlated. When goldfish were exposed to HT for 300 min oxygen consumption and plasma concentrations of 15 free amino acids were increased compared with goldish at CT. Concentrations of several free amino acids were increased to varying extents in the brain, liver, and muscle tissues. In conclusion, an acute increase in water temperature affected amino acid metabolism differently in the brain, liver, and muscle tissues. Goldfish will be a useful species for further studies of the possible roles of various amino acids in the brain, muscle, and liver during acute increases in water temperature in fish.

Original languageEnglish
Pages (from-to)1343-1354
Number of pages12
JournalFish Physiology and Biochemistry
Volume45
Issue number4
DOIs
Publication statusPublished - Aug 15 2019

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Goldfish
Carassius auratus
goldfish
Liver
free amino acids
Muscle
brain
Brain
muscle
water temperature
Blood
amino acid
blood
Amino Acids
Muscles
muscles
liver
Temperature
Water
Fishes

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physiology
  • Aquatic Science

Cite this

An acute increase in water temperature can increase free amino acid concentrations in the blood, brain, liver, and muscle in goldfish (Carassius auratus). / Wang, Yunhao; Han, Guofeng; Pham, Cuong V.; Koyanagi, Kiyohiko; Song, Yandejia; Sudo, Ryunosuke; Lauwereyns, Johan Marc Jose; Cockrem, John F.; Furuse, Mitsuhiro; Surchowdhury, Vishwajit.

In: Fish Physiology and Biochemistry, Vol. 45, No. 4, 15.08.2019, p. 1343-1354.

Research output: Contribution to journalArticle

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