Supplementation of cyanobacterial food with polyunsaturated fatty acids does not improve growth of Daphnia

摘要

The hypothesis that the low food quality of non- toxic, ingestible cyanobacteria for Daphnia is due to the ab - sence of long - chaied polyunsaturated fatty acids (PUFAs) was tested. Synechococcus elongatus, which is well assimilat - ed by Daphnia and is deficient in PUFAs, was chosen as a model food organism. A newly devised method was used to load single fatty acids and mixtures of fatty acids on beads of bovine serum albumin, which then were added as supplements tality effect of ultraviolet radiation in a translucent and in a red morph of Acanthodiaptomus denticornis (Crustacea, Copepo - da) and its possible ecological relevance.