Brain monoamine concentrations as predictors of growth inhibition in channel catfish exposed to ammonia

Heidi L. Atwood, Joseph R. Tomasso, Patrick Ronan, Bruce A. Barton, Kenneth J. Renner

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Fingerlings of channel catfish Ictalurus punctatus exhibited a significant exposure-dependent decrease in growth (measured by weight gain and increase in total length) and condition factor after 9 weeks of exposure to environmental ammonia. Concentrations of 5-hydroxytryptamine (5- HT) and dopamine in the brain decreased significantly whereas the ratio of 5-hydroxyindoleacetic acid (5-HIAA) to 5-HT increased significantly in exposure-dependent manners. The brain dopamine concentrations and the 5-HIAA;5-HT ratio collectively explained 88% of the variation in growth due to ammonia exposure. This study demonstrates the potential to predict ammonia-induced inhibition of growth in channel catfish with physiological changes.

Original languageEnglish (US)
Pages (from-to)69-73
Number of pages5
JournalJournal of Aquatic Animal Health
Volume12
Issue number1
DOIs
StatePublished - Jan 1 2000

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monoamines
Ictalurus punctatus
5-hydroxyindoleacetic acid
serotonin
growth retardation
brain
ammonia
dopamine
condition factor
fingerlings
acid
weight gain
exposure

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Brain monoamine concentrations as predictors of growth inhibition in channel catfish exposed to ammonia. / Atwood, Heidi L.; Tomasso, Joseph R.; Ronan, Patrick; Barton, Bruce A.; Renner, Kenneth J.

In: Journal of Aquatic Animal Health, Vol. 12, No. 1, 01.01.2000, p. 69-73.

Research output: Contribution to journalArticle

Atwood, Heidi L. ; Tomasso, Joseph R. ; Ronan, Patrick ; Barton, Bruce A. ; Renner, Kenneth J. / Brain monoamine concentrations as predictors of growth inhibition in channel catfish exposed to ammonia. In: Journal of Aquatic Animal Health. 2000 ; Vol. 12, No. 1. pp. 69-73.
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