The potential uptake and trophic transfer of nanoparticles (NP) is not well understood so far and for @entity1948 NP the data presented in peer-reviewed literature is limited. In this paper the influence of surface functionalization on the uptake and depuration behavior of @entity1948 NP, @entity1948 - @entity2145 NP and ZnO-octyl NP in D. magna was studied. Bulk @entity1948 particles ( <=5 m) and @entity21482 were used as references for uptake of particles and dissolved species of Zn, respectively. Furthermore, the trophic transfer of @entity1948 NP and ZnO-octyl NP from daphnids (Daphnia magna) to @entity3392 ( @entity3392 ) was studied. For @entity1948 NP and ZnO-octyl NP fast uptakes in D. magna were observed, whereas no measurable uptake took place for @entity1948 - @entity2145 NP. Lower body burden of @entity21482 was found compared to both @entity1948 NP and ZnO-octyl. Contrary, the body burden for bulk @entity1948 was higher than that of @entity1948 NP but lower than ZnO-octyl. The higher body burdens found for functionalized ZnO-octyl NP than for non-functionalized @entity1948 NP showed that that the functionalization of the NP has a high influence on the uptake and depuration behavior. Though no mortality was observed, the resulting body burdens were 9.6 times ( @entity1948 NP) and 47 times (ZnO-octyl NP) higher than toxic levels reported for @entity219 in D. magna. Consequently, the @entity219 recovered in the animals was not solely due to soluble @entity219 , but agglomerates/aggregates of @entity1948 NP or ZnO-octyl NP contributed to the body burdens. The trophic transfer study showed uptake of both @entity1948 NP and ZnO-octyl NP reaching more than tenfold higher levels than those obtained through aqueous exposure in other studies. This study contributes to expand the available data on uptake behavior of differently functionalized @entity1948 NP in D. magna and the potential trophic transfer from zooplankton to fish.

Trophic transfer of differently functionalized zinc oxide nanoparticles from crustaceans (Daphnia magna) to @entity3392 ( XXXX ).

@entity219 :: ('MESH:D015032', 'Chemical') :: ['zinc'] @entity21482 :: ('CHEBI:49976', 'Chemical') :: ['ZnCl2'] @entity2145 :: ('MESH:C031356', 'Chemical') :: ['OH'] @entity3392 :: ('7955', 'Species') :: ['zebra fish', 'Danio rerio'] @entity1948 :: ('CHEBI:50836', 'Chemical') :: ['ZnO']
@entity3392 :: (7955,Species) :: ['Danio rerio']
