Pontoporeia hoyi

Landrum, P.F. (1988) Toxicokinetics of organic xenobiotics in the amphipod Pontoporeia hoyi role of physiological and environmental variables. Aqua. Toxicol. 12, 245-271. 

Landrum, P.F. (1989) Bioavailability and toxicokinetics of polycyclic aromatic hydrocarbons sorbed to sediments for the amphipod Pontoporeia hoyi. Environ. Sci. Technol. 23, 588-595. 

Landrum, PE, Reinhold, M.D., Nihart, S.R., Eadie, B.J. (1985) Predicting the bioavailability of organic xenobiotics to Pontoporeia hoyi in the presence of humic and fulvic materials and natural dissolved organic matter. Environ. Toxicol. Chem. 4,459—167. 

Evans, M.S. and P.F. Landrum. 1989. Toxicokinetics of DDE, benzo(a)pyrene, and 2,4,5,2, 4, 5 -hexachloro-biphenyl in Pontoporeia hoyi and Mysis relicta. Jour. Great Lakes Res. 15 589-600. 

Landrum, P.F. 1983. The effect of co-contaminants on the bioavailability of polycyclic aromatic hydrocarbons to Pontoporeia hoyi. Pages 731-743 in M. Cooke and AJ. Dennis (eds.). Polynuclear Aromatic Hydrocarbons Formation, Metabolism and Measurement. Battelle Press, Columbus, OH. 

Amphipod, Gammarus pseudolimnaeus PCBs 8, 15, 32, 155, 101 initial water concentrations of 70-210 pg/L Mysid, Mysis rellcta-, exposed to radiolabeled PCB 153 for 6 h at 4°C, then transferred to clean water for 26 days Amphipod, Pontoporeia hoyi exposed to radiolabeled PCB 153 for 6 h at 4°C, then transferred to clean water for 26 days... 

Landrum, R.F., Dupuis, W.S. (1990) Toxicity and toxicokinetics of pentachlorophenol and carbaryl to Pontoporeia hoyi and Mysis relicta. In Aquatic Toxicology and Risk Assessment. 13th Volume, ASTM STP 1096, Landis, W.G., van der Schalie, W.H., Editors, American Society for Testing and Materials, Philadelphia. 

Landrum, P.F., S.R. Nihart, B.J. Eadie, and L.R. Herche. 1987. Reduction in bioavailability of organic contaminants to the amphipod Pontoporeia hoyi by dissolved organic matter of sediment interstitial waters. Environ. Toxicol. Chem. 6 11-20. 

Because PAHs exhibit a range in lipophilic affinity, elimination that relies solely on passive diffusion loss should be slower for the more hydro-phobic PAHs. Such a correlation has been shown for the freshwater amphi-pod [Diporeia spp. (Pontoporeia hoyi)], which does not metabolize PAHs to any appreciable extent (Landrum 1988). This author found that for a series of PAHs with increasing octanol-water partition coefficients, the elimination constant decreased, which led to longer half-lives. The more water-soluble PAHs phenanthrene, anthracene, and fluoranthene showed nearly identical rapid elimination patterns (/./, 2 d) in mussels (Mytilus edulis) exposed to contaminated suspended sediments for 28 d, while the more hydrophobic PAHs produced half-lives in the range of 4-6 d (Fig. 8 see Table 2) (Lake et al. 1985). The most hydrophobic of the group, pery-lene, displayed the slowest elimination. 

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