Long-term effects of sediment-associated silver nanoparticles and silver nitrate on the deposit-feeding polychaete Capitella teleta

Maria Bille Nielsen; Janna Vavra; Annemette Palmqvist; Valery E. Forbes

doi:10.1016/j.aquatox.2021.106046

Long-term effects of sediment-associated silver nanoparticles and silver nitrate on the deposit-feeding polychaete Capitella teleta

Maria Bille Nielsen^*, Janna Vavra, Annemette Palmqvist, Valery E. Forbes

^*Corresponding author for this work

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Abstract

Aquatic sediments are predicted to be an important sink for released silver nanoparticles (AgNPs). Knowing the long-term effects of AgNPs on benthic deposit-feeders is therefore an important step towards assessing their potential environmental risks. The aim of this study was to examine the effects on survival, growth and reproduction of the deposit-feeding polychaete Capitella teleta exposed for ten weeks to sediment-associated un-coated AgNPs or silver nitrate (AgNO₃). C. teleta exhibited tolerance towards exposure to both AgNPs and AgNO₃. Significant effects were observed for percentage of pairs that reproduced as well as worm growth after eight weeks, but the effects did not show a clear concentration- or Ag type-dependent pattern. Further investigations of long-term effects of un-coated AgNPs in additional sediment-dwelling organisms are needed and should involve comparisons to coated AgNPs.

Original language	English
Article number	106046
Journal	Aquatic Toxicology
Volume	242
Number of pages	4
ISSN	0166-445X
DOIs	https://doi.org/10.1016/j.aquatox.2021.106046
Publication status	Published - 2022

Keywords

Deposit-feeder
Ecotoxicity
Long-term exposure
Sediment
Silver nanoparticles
Silver nitrate

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title = "Long-term effects of sediment-associated silver nanoparticles and silver nitrate on the deposit-feeding polychaete Capitella teleta",

abstract = "Aquatic sediments are predicted to be an important sink for released silver nanoparticles (AgNPs). Knowing the long-term effects of AgNPs on benthic deposit-feeders is therefore an important step towards assessing their potential environmental risks. The aim of this study was to examine the effects on survival, growth and reproduction of the deposit-feeding polychaete Capitella teleta exposed for ten weeks to sediment-associated un-coated AgNPs or silver nitrate (AgNO3). C. teleta exhibited tolerance towards exposure to both AgNPs and AgNO3. Significant effects were observed for percentage of pairs that reproduced as well as worm growth after eight weeks, but the effects did not show a clear concentration- or Ag type-dependent pattern. Further investigations of long-term effects of un-coated AgNPs in additional sediment-dwelling organisms are needed and should involve comparisons to coated AgNPs.",

keywords = "Deposit-feeder, Ecotoxicity, Long-term exposure, Sediment, Silver nanoparticles, Silver nitrate",

author = "Nielsen, {Maria Bille} and Janna Vavra and Annemette Palmqvist and Forbes, {Valery E.}",

year = "2022",

doi = "10.1016/j.aquatox.2021.106046",

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T1 - Long-term effects of sediment-associated silver nanoparticles and silver nitrate on the deposit-feeding polychaete Capitella teleta

AU - Nielsen, Maria Bille

AU - Vavra, Janna

AU - Palmqvist, Annemette

AU - Forbes, Valery E.

PY - 2022

Y1 - 2022

N2 - Aquatic sediments are predicted to be an important sink for released silver nanoparticles (AgNPs). Knowing the long-term effects of AgNPs on benthic deposit-feeders is therefore an important step towards assessing their potential environmental risks. The aim of this study was to examine the effects on survival, growth and reproduction of the deposit-feeding polychaete Capitella teleta exposed for ten weeks to sediment-associated un-coated AgNPs or silver nitrate (AgNO3). C. teleta exhibited tolerance towards exposure to both AgNPs and AgNO3. Significant effects were observed for percentage of pairs that reproduced as well as worm growth after eight weeks, but the effects did not show a clear concentration- or Ag type-dependent pattern. Further investigations of long-term effects of un-coated AgNPs in additional sediment-dwelling organisms are needed and should involve comparisons to coated AgNPs.

AB - Aquatic sediments are predicted to be an important sink for released silver nanoparticles (AgNPs). Knowing the long-term effects of AgNPs on benthic deposit-feeders is therefore an important step towards assessing their potential environmental risks. The aim of this study was to examine the effects on survival, growth and reproduction of the deposit-feeding polychaete Capitella teleta exposed for ten weeks to sediment-associated un-coated AgNPs or silver nitrate (AgNO3). C. teleta exhibited tolerance towards exposure to both AgNPs and AgNO3. Significant effects were observed for percentage of pairs that reproduced as well as worm growth after eight weeks, but the effects did not show a clear concentration- or Ag type-dependent pattern. Further investigations of long-term effects of un-coated AgNPs in additional sediment-dwelling organisms are needed and should involve comparisons to coated AgNPs.

KW - Deposit-feeder

KW - Ecotoxicity

KW - Long-term exposure

KW - Sediment

KW - Silver nanoparticles

KW - Silver nitrate

U2 - 10.1016/j.aquatox.2021.106046

DO - 10.1016/j.aquatox.2021.106046

M3 - Journal article

C2 - 34864387

SN - 0166-445X

VL - 242

JO - Aquatic Toxicology

JF - Aquatic Toxicology

M1 - 106046

ER -

Long-term effects of sediment-associated silver nanoparticles and silver nitrate on the deposit-feeding polychaete Capitella teleta

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Keywords

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