Seasonal differences in muscle fibre recruitment of pilchard larvae in the north-western Mediterranean

IA Catalán, Ian Alistair Johnston, MP Olivar

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The recruitment of slow and fast myotomal muscle fibres with respect to growth in body length in European pilchard larvae Sardina pilchardus [(3(.)5-13(.)5mm standard length (L-S)] was significantly higher in November 1998 than February 1999. This resulted in a significant seasonal difference in the relationship between fibre number and L-S, particularly for the fast muscle. Mean sea surface temperature was c. 6degrees C higher in November than February, whereas the mean abundance of potential prey items (copepod nauplii) was comparable between cruises. Laboratory and field data obtained from other clupeid species have indicated the importance of early thermal experience on muscle fibre recruitment patterns. Differences in average sea temperature therefore provide a plausible mechanism for the observed seasonal differences in muscle growth characteristics. (C) 2004 The Fisheries Society of the British Isles.

Original languageEnglish
Pages (from-to)1605-1625
Number of pages11
JournalJournal of Fish Biology
Volume64
Issue number6
DOIs
Publication statusPublished - Jun 2004

Keywords

  • growth
  • muscle
  • Sardina pilchardus
  • temperature
  • HERRING CLUPEA-HARENGUS
  • SARDINA-PILCHARDUS
  • GROWTH-CHARACTERISTICS
  • TEMPERATURE
  • ANCHOVY
  • POPULATION
  • SURVIVAL
  • HISTORY
  • WALBAUM
  • SIZE

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