Abstract
Several biotic and abiotic stress factors may affect aquatic organisms simultaneously. However, not much is known about the effects of, e.g., low temperatures and parasite infections on the toxicokinetics of organic hydrophobic chemicals. Here we studied the accumulation and depuration of [14C]2,4,5-trichlorophenol (TCP) and [3H]benzo(a)pyrene (BaP) in the sediment-dwelling freshwater clam Pisidium amnicum. Experiments were made in October (+15°C), April (+4°C), and July (+15°C) both with uninfected clams and clams infected with Bunodera luciopercae (Trematoda).
The accumulation rate for both chemicals was slower at 4°C than at 15°C. The depuration of TCP was biphasic, and the slowest depuration occurred at 4°C. For BaP, the depuration was very slow and monophasic at all temperatures. The highest BCFs for both chemicals were found in July at 15°C. Surprisingly, the BCFs for TCP were higher in April at 4°C than in October at 15°C. For BaP, no steady-state was reached in April. Differences in chemical toxicokinetics between the infected and uninfected clams were only minor. However, for both chemicals a trend of slightly lower BCFs in the infected clams was found. In conclusion, low temperatures modify the toxicokinetics of organic chemicals in P. amnicum and the effects depend on hydrophobicity of the chemical. The effects of parasites on toxicokinetics seem to be small.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 4 November 1999/Accepted: 29 March 2000
Rights and permissions
About this article
Cite this article
Heinonen, J., Kukkonen, J. & Holopainen, I. Toxicokinetics of 2,4,5-Trichlorophenol and Benzo(a)pyrene in the Clam Pisidium amnicum: Effects of Seasonal Temperatures and Trematode Parasites. Arch. Environ. Contam. Toxicol. 39, 352–359 (2000). https://doi.org/10.1007/s002440010115
Issue Date:
DOI: https://doi.org/10.1007/s002440010115