Description:
<jats:p>Comparisons between <jats:italic>Bosmina coregoni</jats:italic> and <jats:italic>Bosmina longirostris</jats:italic> in fish stomachs and net plankton showed a larger mean size in the stomachs and a clear preference for the larger species, <jats:italic>B. coregoni.</jats:italic> Vertebrate and invertebrate predators may influence distribution and numeric relations between the two species.</jats:p>