Abstract
The upper temperature tolerances of two European species of Tellina from populations near the northern and southern limits of their geographical range are compared by means of median lethal temperature (LT50), and median burial temperature (BT50) determination for periods of exposure up to 96 h. The influence of previous acclimation temperature, and salinity within a limited range, on these determinations is also considered. T. fabula Gmelin, which is found in deeper water throughout its range, shows a lower thermal tolerance than T. tenuis da Costa. Both species display a significant effect of previous acclimation temperatures, the effect on the burrowing responses being greater than that shown by LT50, and in both species the thermal tolerance of individuals from Mediterranean populations is greater than that of individuals from North Atlantic populations.
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Communicated by J. Mauchline, Oban
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Ansell, A.D., Barnett, P.R.O., Bodoy, A. et al. Upper temperature tolerances of some European molluscs. I Tellina fabula and T. tenuis . Mar. Biol. 58, 33–39 (1980). https://doi.org/10.1007/BF00386877
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DOI: https://doi.org/10.1007/BF00386877