Seasonal changes in fast-starts in the short-horn sculpin: integration of swimming behaviour and muscle performance

G K Temple, J M Wakeling, I A Johnston

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In short-horn sculpin Myoxocephalus scorpius, the power requirements for fast-start swimming and the length-specific velocity of the curvature wave travelling down the spine ((U) over cap) were not influenced significantly by acclimation to summer and winter conditions at test temperatures of 5 and 15 degrees C. However, in-vivo and in-vitro muscle performance exhibited acclimation responses at 15 degrees C. Seasonal acclimation altered the escape performance curves for power and (U) over cap significantly over a wider temperature range of 0.8-20 degrees C. (U) over cap was significantly higher at 20 degrees C in the summer- than winter-acclimation group. The acclimation of lower levers of physiological organization at 15 degrees C may thus serve to extend the thermal limits for escape performance in summer acclimated fish. (C) 2000 The Fisheries Society of the British Isles.

Original languageEnglish
Pages (from-to)1435-1449
Number of pages15
JournalJournal of Fish Biology
Volume56
Publication statusPublished - Jun 2000

Keywords

  • short-horn sculpin
  • fast-start
  • escape response
  • fast muscle
  • temperature acclimation
  • muscle power output
  • hydrodynamic power
  • FISH MYOXOCEPHALUS-SCORPIUS
  • TEMPERATURE-ACCLIMATION
  • POWER OUTPUT
  • CONTRACTILE PROPERTIES
  • ESCAPE PERFORMANCE
  • NORTHERN PIKE
  • ESOX-LUCIUS
  • KINEMATICS
  • PLASTICITY
  • RESISTANCE

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