Hydrobiologia

, Volume 248, Issue 2, pp 125–136

Comparison of five cladoceran species in short- and long-term copper exposure

  • Sanna Koivisto
  • Matti Ketola
  • Mari Walls
Article

DOI: 10.1007/BF00006080

Cite this article as:
Koivisto, S., Ketola, M. & Walls, M. Hydrobiologia (1992) 248: 125. doi:10.1007/BF00006080

Abstract

The study was carried out to assess the effect of both short-and long-term copper exposure on five cladoceran species differing in body size and habitat, i.e. Daphnia magna, D. pulex, D. galeata, Bosmina longirostris, and Chydorus sphaericus. The species-specific 48 h EC50 values for fed neonates were used to determine the chronic exposure levels (52% and 65% of the EC50 values). The experiment was run at two food levels. Long-term copper exposure retarded growth in each of the species studied. However, the copper treatments did not affect the clutch sizes of the experimental animals. At a low food level, copper exposure increased mortality in every species studied. The intrinsic rate of increase, r, was reduced in the copper-exposed populations. The sensitivity to copper was higher in the small lake species, compared to D. magna and D. pulex that are commonly used in standard toxicity tests. Of the species studied, B. longirostris had the highest sensitivity to both acute and chronic copper stress. The different sensitivities of the species studied are discussed in an ecological context.

Key words

cladoceracoppertoxicitygrowthreproductionsurvival

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • Sanna Koivisto
    • 1
  • Matti Ketola
    • 1
  • Mari Walls
    • 1
  1. 1.Laboratory of Ecological Zoology, Department of BiologyUniversity of TurkuTurkuFinland
  2. 2.Department of Systems EcologyUniversity of StockholmStockholmSweden