Effects of multigenerational exposures of D. magna to environmentally relevant concentrations of pentachlorophenol

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

18 Scopus Citations
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Author(s)

  • Yi Chen
  • Jin Huang
  • Liqun Xing
  • Hongling Liu
  • John P. Giesy
  • And 2 others
  • Hongxia Yu
  • Xiaowei Zhang

Detail(s)

Original languageEnglish
Pages (from-to)234-243
Journal / PublicationEnvironmental Science and Pollution Research
Volume21
Issue number1
Publication statusPublished - Jan 2014

Abstract

The re-emergence of schistosomiasis has given rise to ubiquitous concentrations of the primary control agent pentachlorophenol (PCP) in the environment, especially in the surface waters of China. In this study, the effects of environmentally relevant concentrations of PCP, namely, 0.0002, 0.002, 0.02, 0.2, and 2 μmol/L on survival, age at first reproduction, fecundity, length of mothers, and number of molts of Daphnia magna were studied over three generations. The survival of D. magna exposed to 2 μmol/L was significantly affected in the three generations. Toxic effects were enhanced in later generations. Age at first reproduction of F1 and F2 D. magna was significantly slower than that of the controls. The total number of offspring per female exposed to concentrations of 0.002 μmol/L or greater was less (23.5 to 67.6, 9.4 to 73.7, and 3.6 to 83.7 %) than that of the controls in the F0, F1, and F2 generations, respectively. The body length of mothers significantly decreased (4.7 to 6.8, 9.6 to 15.1, and 13.3 to 23.2 %) after exposure to 0.002 μmol/L or greater than those of unexposed individuals in the F0, F1, and F2 generations, respectively. Dose-response relationships between concentrations of PCP and length and number of molts of D. magna were observed in the F0 to F2 generations. PCP concentrations on the surface waters of China caused adverse effects to D. magna, which increased over successive generations. Significant effects were observed in the third generation. The multigenerational studies were more sensitive than the single-generation experiments. Thus, multigenerational exposure may be more predictive of chronic exposure under field conditions. © 2013 Springer-Verlag Berlin Heidelberg.

Research Area(s)

  • D. magna, Multigenerational, PCP, Water quality criteria

Citation Format(s)

Effects of multigenerational exposures of D. magna to environmentally relevant concentrations of pentachlorophenol. / Chen, Yi; Huang, Jin; Xing, Liqun; Liu, Hongling; Giesy, John P.; Yu, Hongxia; Zhang, Xiaowei.

In: Environmental Science and Pollution Research, Vol. 21, No. 1, 01.2014, p. 234-243.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review