Document Detail

Physiological correlates of growth and condition in the yellow perch (Perca flavescens).
MedLine Citation:
PMID:  18675373     Owner:  NLM     Status:  MEDLINE    
This study on yellow perch (Perca flavescens) examines a series of enzymatic markers and the relative weights of pyloric caeca and visceral lipids, their response to changes in feeding regime and their potential use to infer recent changes in growth rate and fish condition. Fish were exposed to four different feeding regimes for 12 weeks resulting in specific growth rates ranging from 0.3% to 3.5% (%/day). Growth and condition responded rapidly to changes in ration and the weight of pyloric caeca and visceral lipids reflected increased feed intake. Growth rate was correlated with muscle citrate synthase and caecal nucleoside-diphosphate kinase activities, whereas condition was correlated with muscle citrate synthase and lactate dehydrogenase activities and with caecal glucose-6-phosphate dehydrogenase activity. Results showed that enzyme activities and biometric parameters responded rapidly to increased feed intake, but the response was slower when food intake decreased. Plateaus were attained for both condition and visceral lipid index, but the relative weight of pyloric caeca continued to increase throughout the experimental period. Results from this study could, in principle, be used to infer recent growth and energy status in wild yellow perch and thus provide an indicator of food availability in their environment.
Charles Gauthier; Peter G C Campbell; Patrice Couture
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-07-11
Journal Detail:
Title:  Comparative biochemistry and physiology. Part A, Molecular & integrative physiology     Volume:  151     ISSN:  1531-4332     ISO Abbreviation:  Comp. Biochem. Physiol., Part A Mol. Integr. Physiol.     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2009-11-03     Completed Date:  2009-12-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9806096     Medline TA:  Comp Biochem Physiol A Mol Integr Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  526-32     Citation Subset:  IM    
Institut national de la recherche scientifique: Centre eau, terre et environnement, Qu??bec, QC, Canada.
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MeSH Terms
Cecum / anatomy & histology,  enzymology
Citrate (si)-Synthase / metabolism
Electron Transport Complex IV / metabolism
Glucosephosphate Dehydrogenase / metabolism
L-Lactate Dehydrogenase / metabolism
Lipid Metabolism
Muscles / enzymology
Nucleoside-Diphosphate Kinase / metabolism
Organ Size
Perches / anatomy & histology,  growth & development*,  physiology*
Pyruvate Kinase / metabolism
Reg. No./Substance:
EC Dehydrogenase; EC Dehydrogenase; EC Transport Complex IV; EC (si)-Synthase; EC Kinase; EC Kinase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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