Seasonal thermal tolerance in marine Crustacea

Richard Hopkin, Suhaila Qari, Kenneth Bowler, David Hyde, Mirela Cuculescu-Santana

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71 Citations (Scopus)


Seasonal values of the critical thermal maximum (CTMax) of eight species of adult marine Crustacea from temperate latitudes were measured and found to range between 20 and 34°C. The extent to which CTMax was dependent on acclimatization varied with species but for most of the species studied, summer-captured animals had significantly higher CTMax values than winter-captured animals. Heat shock resulted in an increase in thermotolerance in most species in winter-captured animals, but a different pattern was found for summer-captured animals. Then, only Cancer pagurus and Pagurus bernhardus showed a positive increment of CTMax on heat shock. Test for Serial Independence analysis indicated no significant phylogenetic autocorrelation between CTMax values in winter or summer-captured animals. Temperature measurements taken by remote data loggers in the intertidal zone of the North-East coast of England are reported. These suggest that several species, whose distribution extends into the intertidal zone, may experience temperatures close to their CTMax in summer.
Original languageEnglish
Pages (from-to)74-81
JournalJournal of Experimental Marine Biology and Ecology
Issue number1
Publication statusPublished - 4 Apr 2006


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