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Seasonal changes in fast‐starts in the short‐horn sculpin: integration of swimming behaviour and muscle performance
Author(s) -
Temple G. K.,
Wakeling† J. M.,
Johnston I. A.
Publication year - 2000
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2000.tb02155.x
Subject(s) - acclimatization , sculpin , biology , escape response , zoology , fish <actinopterygii> , ecology , fishery
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 ( Û ) were not influenced significantly by acclimation to summer and winter conditions at test temperatures of 5 and 15° C. However, in‐vivo and in‐vitro muscle performance exhibited acclimation responses at 15° C. Seasonal acclimation altered the escape performance curves for power and Û significantly over a wider temperature range of 0·8–20° C. Û was significantly higher at 20° C in the summer‐ than winter‐acclimation group. The acclimation of lower levels of physiological organization at 15° C may thus serve to extend the thermal limits for escape performance in summer acclimated fish.