Are morphometric indices accurate indicators of stored energy in herring Clupea harengus?

Deborah Davidson, C. Tara Marshall

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The accuracy of the morphometric indices Fulton's K, somatic K and relative condition factor, K-n, as measures of individual North Sea herring Clupea harengus muscle fat content was investigated using the Distell Fish Fat meter. The accuracy of fat-meter readings from an individual fish was validated by comparison with Soxhlet extraction analysis. The studies conducted demonstrated that Fulton's K is not consistently or strongly correlated with individual C. harengus muscle fat content, as defined by the fat-meter estimates. The study shows that somatic K and K-n may be better indices of individual North Sea C. harengus muscle fat content than Fulton's K. These morphometric indices, however, should only be used after prior validation against a more direct measure of fat content.

Original languageEnglish
Pages (from-to)913-929
Number of pages17
JournalJournal of Fish Biology
Volume76
Issue number4
DOIs
Publication statusPublished - Mar 2010

Keywords

  • condition
  • fat
  • fatmeter
  • Fulton's K
  • fultons condition factor
  • body condition
  • spawning time
  • fish
  • muscle
  • salmon
  • growth
  • size
  • sea

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