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Variation in the sensitivity to stress of Macoma balthica was measured in several French and Dutch estuaries. For adult and juvenile Macoma balthica exposed to copper under conditions of starvation, differences in mortality rate, condition, glycogen, burrowing rate and copper content were assessed. No significant differences were observed between adults and juveniles; the influence of treatment and origin was always evident. Animals from the most southern estuaries, Loire and Gironde, near to the species's southern limit of distribution, showed, in the field, the strongest deviations for the ecophysiological traits measured, and were in the experiments the most sensitive to stress. [KEYWORDS: stress; ecophysiology; bivalves; Macoma balthica; mortality; age; condition; glycogen; burrowing rate; geographic cline; limit of distribution; copper; estuaries San-francisco bay; dutch wadden sea; cu; recruitment; growth; weight; ag; cd; pb]
Original languageEnglish
Pages (from-to)315-321
JournalJournal of Sea Research
Issue number4
StatePublished - 1996

ID: 146074