The results of the preexposure
experiment with microalgae indicated that the high Hg
content in H. uniremis could be due to the high Hg intake from its
N. closterium and I. galbana diet. M. mongolica selected Chlorella sp.
with low Hg level as the sole food that greatly reduced the chances
of Hg accumulation. Interestingly, the feeding habit of Artemia sp.
was between M. mongolica and H. uniremis, which could result in its
intermediate Hg concentration level. Therefore, this could be the
first step indicating that the transfer of MeHg is influenced by the
feeding selectivity of zooplankton.