Biota-sediment accumulation factor (BSAF), bioaccumulation factor (BAF), and contaminant levels in prey fish to indicate the extent of PAHs and OCPs contamination in eggs of waterbirds

C. K. Kwok, Y. Liang*, Kelvin S Y LEUNG, H. Wang, Y. H. Dong, L. Young, J. P. Giesy, Ming Hung WONG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Samples of pond sediment, fish, and shrimp were collected from the Ramsar site at Mai Po marshes, Hong Kong (south China), and samples of pond sediment, fish, and shrimp, as well as eggs of water birds (Chinese Pond Herons (Ardeola bacchus) and Little Egrets (Egretta garzetta)), were collected from two smaller wetland sites at Jiangsu Province (mid-China), between 2004 and 2007. Accumulation levels of polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in the biota were used to calculate biota-sediment accumulation factor (BSAF) and bioaccumulation factor (BAF). For fish and shrimp, BSAFs of OCPs (3.8-56) were greater than those of PAHs (0.12-6.3). BSAFs and BAFs of 11-79 and 4-34, respectively, were registered for OCPs in eggs of the birds and were greater than those for PAHs (0.11-1.5 and 0.02-1.3, respectively). Assuming that fish were the main prey of the birds, greater bioaccumulation of OCPs was detected for both bird species (BAFs = 4.5-34), while accumulation of PAHs was only detected in Little Egret (BAF = 1.3). A significant linear relationship (p < 0.01) was observed between concentrations of OCPs in bird eggs and in the prey fish. The present study provides a new possibility of using OCP levels detected in prey fish to predict the extent of OCPs contamination in eggs of waterbirds including the endangered species, as a noninvasive method.

Original languageEnglish
Pages (from-to)8425-8434
Number of pages10
JournalEnvironmental Science and Pollution Research
Volume20
Issue number12
DOIs
Publication statusPublished - Dec 2013

Scopus Subject Areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

User-Defined Keywords

  • Ardeids
  • Bioaccumulation factor
  • Biota-sediment accumulation factor
  • Persistent organic pollutants
  • Wetland

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