Growth and protein turnover during acclimation to acid and aluminum in juvenile rainbow trout (Oncorhynchus mykiss)

Rod W. Wilson, Chris M. Wood, Dominic F. Houlihan

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Growth, feeding, and protein synthesis (ks) and degradation (kd) in gill, liver, and whole body were measured in juvenile rainbow trout, Oncorhynchus mykiss, during 32 days exposure to sublethal acid (pH 5.2) and acid + aluminum (Al) (30 μg·L-1) in soft water. The only effects observed for exposure to acid alone were depressions of gill ks (17%) and kd (27%) after 15 days (data not available after day 15). Exposure to acid + Al caused a loss of appetite, a 73% reduction in whole body growth rate, and a 36% reduction in whole body ks during the first 7 days; all of these subsequently recovered, although mean body weight was still significantly depressed after 32 days. Gill ks and kd were greatly stimulated after 7 days and gill ks remained elevated after 32 days, suggesting a chronic cost of gill repair and (or) acclimatory processes even after physiological recovery was achieved. However, this elevated cost was small relative to the whole animal protein synthesis budget. Other chronic effects included suppressed liver ks and kd, reduced whole body translational efficiency, and enlarged liver size. Conversion of food into growth was paradoxically increased throughout all stages of acid + Al exposure but may have been the result of reduced routine activity.

Original languageEnglish
Pages (from-to)802-811
Number of pages10
JournalCanadian Journal of Fisheries and Aquatic Sciences
Volume53
Issue number4
StatePublished - Dec 1 1996

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protein metabolism
acclimation
rainbow
aluminum
Oncorhynchus mykiss
gills
turnover
protein
acids
acid
degradation
liver
protein synthesis
animal proteins
food conversion
protein degradation
anorexia
cost
repair
long term effects

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Growth and protein turnover during acclimation to acid and aluminum in juvenile rainbow trout (Oncorhynchus mykiss). / Wilson, Rod W.; Wood, Chris M.; Houlihan, Dominic F.

In: Canadian Journal of Fisheries and Aquatic Sciences, Vol. 53, No. 4, 01.12.1996, p. 802-811.

Research output: Contribution to journalArticle

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