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The influence of thermal parameters on the acclimation responses of pinfish Lagodon rhomboides exposed to static and decreasing low temperatures
Author(s) -
Reber C. M.,
Bennett W. A.
Publication year - 2007
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.1095-8649.2007.01552.x
Subject(s) - acclimatization , biology , range (aeronautics) , latitude , atmospheric temperature range , critical thermal maximum , zoology , ecology , thermodynamics , materials science , physics , composite material , astronomy
Pinfish Lagodon rhomboides acclimation rates were determined by modelling changes in critical thermal minimum ( T crit min , ° C) estimates at set intervals following a temperature decrease of 3–4° C. The results showed that pinfish gained a total of 3·7° C of cold tolerance over a range of acclimation temperatures ( T acc , ° C) from (23–12° C), that cold tolerance increased with exposure time to the reduced temperature at all T acc , but that the rate of cold tolerance accruement (mean 0·14° C day −1 ) was independent of T acc . A highly significant ( P < 0·001) multivariate predictive model was generated that described the acclimation rates and thermal tolerance of pinfish exposed to reduction in water temperature: log 10 T crit min = 0·41597 − 0·01704 T acc + 0·04320 T plunge − 0·08376[log 10 ( t + 1)], where T plunge is plunge temperature (° C) and t is the time (days). A comparison of the present data, with acclimation rate data for other species, suggests that factors such as latitude or geographic range may play a more important role than ambient temperature in determining cold acclimation rates in fishes.