Body size-dependent Cd accumulation in the zebra mussel Dreissena polymorpha from different routes

摘要: Abstract Understanding body size-dependent metal accumulation in aquatic organisms (i.e., allometry) is critical interpreting biomonitoring data. While growth has received the most attention, little known about controls of exposure routes on allometry. Here, Cd zebra mussels ( Dreissena polymorpha ) from different were investigated by exposing to A.( 111 spiked algae+ 113 river water) or B.( sediments+ water). After exposure, levels mussel tissue found be negatively correlated with weight, while allometry coefficients b values) dependent routes: −0.664 for algae, −0.241 sediments and −0.379 water, compared to −0.582 un-exposed mussels. By comparing routes, we that bioaccumulation algae water could more responsible overall mussels, and relative importance two sources was size ranges: Cadmium obtained (algae-Cd) important smaller (tissue dry weight   5 mg). In contrast, sediment-Cd contributed only a small amount may have effect bioaccumulation. Our results suggest largely affected which should considered when trying interpret data