Ref ID : 623
Nicole Lair and H. Oulad Ali; Grazing and assimilation rates of natural populations of planktonic rotifers Keratella cochlearis, Keratella quadrata and Kellicottia longispina in a eutrophic lake (Aydat, France). Hydrobiologia 194:119-131, 1990
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The filtering rates of [14]C labelled Chlamydomonas sp. by 3 dominant species of rotifers were studied in eutrophic Lake Aydat. They varied from 4 to 53 ul/ind.hr for Keratella cochlearis, from 2 to 56 ul/ind.hr for Keratella quadrata and from 3 to 52 ul/ind.hr for Kellicottia longispina. Their maximum assimilation efficiency was 32%. At the measured grazing rates, these populations could clear the water in less than two days during July. In Lake Aydat, the rotifers community could play an important role in the regulation of seasonal succession of phytoplankton and bacteria.