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  1. No Access

    Article

    What goes down must come up: symmetry in light-induced migration behaviour of Daphnia

    During a short period of the year, Daphnia may perform a phenotypically induced diel vertical migration. For this to happen, light-induced swimming reactions must be enhanced both at dawn and at dusk. Enhanced sw...

    Erik Van Gool, Joop Ringelberg in Hydrobiologia (2003)

  2. No Access

    Article

    On the combined analysis of proximate and ultimate aspects in diel vertical migration (DVM) research

    Although evolutionary ecologists agree that proximate and ultimate aspects are two sides of one coin, they are seldom interested in studies on physiological and behavioural mechanisms at the base of ecological...

    Joop Ringelberg, Erik Van Gool in Hydrobiologia (2003)

  3. No Access

    Article

    Some suggestions for future cladoceran research

    The topics dealt with at the Cladoceran Symposium showed a largediversity. A high diversity is what characterises the world westudy, consisting of many different habitats and a rich speciesset. This easily lea...

    Joop Ringelberg in Hydrobiologia (1997)

  4. No Access

    Article

    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 seasonalperiod of diel vertical migration in Lake Maarsseveen(The Netherlands), part of the hybrid Daphniagaleata × hyalina population migrated, whileanother part rema...

    Piet Spaak, Joop Ringelberg in Hydrobiologia (1997)

  5. 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)

  6. No Access

    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)

  7. No Access

    Article

    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 Hydrobiologia (1995)

  8. 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)

  9. No Access

    Article

    Sikko Parma: limnologist, environmentalist and scientific manager

    Louis Van Liere, Ramesh D. Gulati, Bert Z. Salomé, Joop Ringelberg… in Hydrobiologia (1992)