Temporal changes in the relationship between condition indices and proximate composition of juvenile Coregonus artedi

K. L. Pangle, T. M. Sutton

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

The Fulton-condition factor (K) and per cent whole-body water content were examined to determine whether these indices can estimate the proximate composition of juvenile lake herring Coregonus artedi exposed to a simulated Lake Superior winter over a 225 day laboratory experiment. The K was positively correlated to whole-body crude lipid, crude protein, and gross energy content and negatively correlated to whole-body water content for each sampling period of the experiment (days 75, 150 and 225). In contrast, there was only a weak positive correlation between K and whole-body ash content. While per cent water content was negatively correlated with crude lipid, crude protein and gross energy content for each of the three sampling periods, the correlation between this predictor and ash content was only weakly negative. The indices can be used to accurately estimate temporal changes in proximate composition of juvenile lake herring during winter periods.

Original languageEnglish
Pages (from-to)1060-1072
Number of pages13
JournalJournal of Fish Biology
Volume66
Issue number4
DOIs
StatePublished - Apr 2005

Keywords

  • Coregonus artedi
  • Fulton condition factor
  • Lake herring
  • Proximate composition
  • Water content

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