PCB concentrations in riparian spiders (Tetragnathidae) consistently reflect concentrations in water and aquatic macroinvertebrates, but not sediment: Analysis of a seven-year field study.

Autor: Otter RR; Annis Water Resources Institute, Grand Valley State University, Muskegon, MI, USA; Data Science Institute, Middle Tennessee State University, Murfreesboro, TN, USA. Electronic address: otterr@gvsu.edu., Mills MA; Center for Environmental Solutions and Emergency Response, U.S. Environmental Protection Agency, Cincinnati, OH, USA., Fritz KM; Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Cincinnati, OH, USA., Lazorchak JM; Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Cincinnati, OH, USA., White DP; Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Cincinnati, OH, USA., Beaubien GB; Center for Environmental Solutions and Emergency Response, U.S. Environmental Protection Agency, Cincinnati, OH, USA., Walters DM; U.S. Geological Survey, Columbia Environmental Research Center, Columbia, MO, USA.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2024 Feb 20; Vol. 912, pp. 169230. Date of Electronic Publication: 2023 Dec 10.
DOI: 10.1016/j.scitotenv.2023.169230
Abstrakt: Tetragnathid spiders have been used as sentinels to study the biotransport of contaminants between aquatic and terrestrial environments because a significant proportion of their diet consists of adult aquatic insects. A key knowledge gap in assessing tetragnathid spiders as sentinels is understanding the consistency of the year-to-year relationship between contaminant concentrations in spiders and sediment, water, and macroinvertebrates. We collected five years of data over a seven-year investigation at a PCB contaminated-sediment site to investigate if concentrations in spiders were consistently correlated with concentrations in sediment, water, and aquatic macroinvertebrates. Despite significant year-to-year variability in spider PCB concentrations, they were not correlated with sediment concentrations (p = 0.186). However, spider PCB concentrations were significantly, positively correlated with PCB concentrations in water (p < 0.0001, annual r 2  = 0.35-0.84) and macroinvertebrates (p < 0.0001; annual r 2  = 0.59-0.71). Analysis of covariance (ANCOVA) showed that spider PCB concentrations varied consistently with water (β = 0.63) and macroinvertebrate PCB concentrations (β = 1.023) among years. Overall, this study filled a critical knowledge gap in the utilization of tetragnathid spiders as sentinels of aquatic pollution by showing that despite year-to-year changes in PCB concentrations across environmental compartments, consistent relationships existed between spiders and water and aquatic macroinvertebrates.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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