Effects of Chattonella antiqua on the swimming behavior and brain monoamine metabolism of juvenile yellowtail (Seriola quinqueradiata)

Xuchun Qiu, Yukihiko Matsuyama, Mitsuhiro Furuse, Yohei Shimasaki, Yuji Oshima

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Being the precursor of serotonin and melatonin, dietary supplementation with tryptophan (TRP) may modulates behavior, stress responses, and antioxidant capacity in fish. In this study, effects of Chattonella exposure on the swimming behavior and brain monoamine metabolism of yellowtail fed a commercial diet (control diet) or that enriched by 1.5% L-TRP (TRP + diet) were investigated. A 7-day dietary TRP supplementation elevated spontaneous swimming speed of yellowtail and mitigated their behavioral response to Chattonella (250 cells/mL) exposure. A 30-day dietary TRP supplementation elevated growth of juvenile yellowtail. Lethal exposure to Chattonella (1000 cells/mL) significantly elevated the turnover rates of serotonin, dopamine, and norepinephrine metabolism in fish fed control diet, but did not alter the serotonin turnover rate in fish fed TRP + diet. Our results suggested that dietary supplementation with TRP had potential to mitigate the stress response in yellowtail to Chattonella, partly via mediating their brain monoamine metabolism.

Original languageEnglish
Article number110896
JournalMarine Pollution Bulletin
Volume152
DOIs
Publication statusPublished - Mar 2020

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution

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