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  1. No Access

    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)

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    Chapter and Conference Paper

    Some suggestions for future cladoceran research

    The topics dealt with at the Cladoceran Symposium showed a large diversity. A high diversity is what characterises the world we study, consisting of many different habitats and a rich species set. This easily ...

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

  3. No Access

    Chapter and Conference Paper

    The influence of a fish exudate on two clones of the hybrid Daphnia galeata × hyalina

    Two Daphnia clones were isolated from different day depths during the period of diel vertical migration and were tested for their life-history responses to a fish exudate released by juvenile perch. Animals were ...

    Tineke Reede, Joop Ringelberg in Cladocera as Model Organisms in Biology (1995)