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  1. No Access

    Chapter and Conference Paper

    Hybridization in the Daphnia galeata complex: are hybrids locally produced?

    Within the species complex of Daphnia galeata, D. cucullata and D. hyalina various combinations of hybrids and parental taxa occur in lakes throughout Europe. Since daphnids are cyclic parthenogens and mostly rep...

    Piet Spaak in Cladocera: the Biology of Model Organisms (1997)

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    Chapter and Conference Paper

    Differential behaviour and shifts in genotype composition during the beginning of a seasonal period of diel vertical migration

    During the first few weeks of a recurring seasonal period of diel vertical migration in Lake Maarsseveen (The Netherlands), part of the hybrid Daphnia galeata × hyalina population migrated, while another part rem...

    Piet Spaak, Joop Ringelberg in Cladocera: the Biology of Model Organisms (1997)

  3. No Access

    Chapter and Conference Paper

    Cyclomorphosis as a factor explaining success of a Daphnia hybrid in Tjeukemeer

    Recent studies have shown that Daphnia hybrids are intermediate to their parental species for several life history traits, and that they combine advantageous traits of the parental species, thereby decreasing the...

    Piet Spaak in Cladocera as Model Organisms in Biology (1995)