Résultats et connaissances acquises grâce à des cultures intensives de microalgues sur lisier de porcherie

On the occurrence of a possible bioconversion of linolenic acid into docosahexaenoic acid by the copepod Eucyclops serrulatus fed on microalgae

“…From day 14 to the end of the study, a Chlorophycean bloom occurred and considerable values of chlorophyll a and total fatty acid concentrations were reached in both basins (Table I). This proliferation of green microalgae in response to fertilization is a typical trend in freshwater ponds (Dabbadie, 1994), and data on chlorophyll a and fatty acid concentrations are in good agreement with those of Miyazaki (1983) in a Japanese hypereutrophic lake. During the whole study, zooplankton biomass (in terms of dry weight) was dominated, for more than 90%, by E.serrulatus (Figure 1), except on day 28.…”