Growth in the bivalve Macoma balthica from its northern to its southern distribution limit: A discontinuity in North Europe because of genetic adaptations in Arctic populations?

H. Hummel, R.H. Bogaards, T. Bek, L. Polishchuk, K. Sokolov, C. Amiard-Triquet, G. Bachelet, M. Desprez, A. Naumov, P.P. Strelkov, S. Dahle, S. Denisenko, M. Gantsevich, L. De Wolf

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

    14 Citations (Scopus)

    Abstract

    The hypothesis was tested that towards a species limit of distribution its performance, such as growth or fitness, decreases. To this end, latitudinal changes in growth, maximum attainable length and genetic constitution were assessed for the Baltic clam, Macoma balthica (L.), at stations ranging from the most southern distribution limit (France) to its most north-eastern limit in the Arctic Pechora Sea (North Russia). Growth was analyzed by means of growth-rings on the shells, the genetic constitution by electrophoretic isoenzyme analysis. Growth patterns and the genetic constitution of populations from West Europe, North Europe and the White Sea were similar, whereas the populations from the Pechora Sea are distinct from the other populations. The performance of clams in the Pechora Sea populations, with a relatively low annual growth but high maximum length, was, in contrast to the hypothesis, not decreased. It is concluded that the Pechora Sea populations form a separate group, genetically different from other European populations and adapted to the Arctic conditions. [KEYWORDS: Arctic; adaptation; distribution limit; genetics; geographic cline; growth; Macoma balthica; shell-length Dutch wadden sea; electrophoretic data; recruitment; gironde; stress]
    Original languageEnglish
    Pages (from-to)133-141
    JournalComparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology
    Volume120
    Issue number1
    DOIs
    Publication statusPublished - 1998

    Fingerprint

    Dive into the research topics of 'Growth in the bivalve Macoma balthica from its northern to its southern distribution limit: A discontinuity in North Europe because of genetic adaptations in Arctic populations?'. Together they form a unique fingerprint.

    Cite this