Roghair CJ ; Wolters-Balk MAH ; Mathhijssen-Spiekman
EAM
36 p
in Dutch
1991
Toon Nederlands
English Abstract The effects of eight different media on reproduction,
condition and growth of Daphnia magna were measured in three consecutive
generations. These media were: 1) ISO-medium, 2) ISO-medium +
trace-elements, 3) ISO-medium + selenium + bromide, 4) Elendt-medium, 5) DSW
+ old rearing water, 6) DSW + trace-elements, 7) DSW + selenium + bromide
and 8) DSW + enriched pond water. The design of the experiments was based
on the EEC draft guideline "Prolonged toxicity study with Daphnia magna:
Effects on reproduction." ISO medium and two modifications of ISO medium
gave an unacceptable low reproduction together with a high mortality among
newborn daphnias. The best results were produced by the medium consisting
of DSW and enriched pond water.