Exposure of the marine deposit feeder Hydrobia ulvae to sediment associated LAS

A. Mauffret; A. Rico Rico; A. Temara; J. Blasco

doi:10.1016/j.envpol.2009.08.013

Exposure of the marine deposit feeder Hydrobia ulvae to sediment associated LAS

A. Mauffret, A. Rico Rico, A. Temara, J. Blasco

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Abstract

Linear Alkylbenzene Sulfonates (LAS) effects (mortality, egestion rate, behaviour) on the marine deposit feeder Hydrobia ulvae were assessed in whole-sediment and water-only systems. The results were combined with a bioenergetic-based kinetic model of exposure pathways to account for the observed toxicity. The 10-d LC50 value based on the freely dissolved fraction was 9.3 times lower in spiked sediment (0.152 +/- 0.001 (95% CI) mg/L) than in water-only (1.390 +/- 0.020 (95% CI) mg/L). Consequently, the actual 10-d LC50 value (208 mg/kg) was overestimated by the Equilibrium Partitioning calculation (1629 mg/kg). This suggests that the sediment associated LAS fraction was bioavailable to the snails. It could also be due to modifications in physiological parameters in absence of sediment, the organism natural substrate.

Original language	English
Pages (from-to)	529-535
Number of pages	7
Journal	Environmental Pollution
Volume	158
Issue number	2
DOIs	https://doi.org/10.1016/j.envpol.2009.08.013
Publication status	Published - 2010

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Mauffret-Environ Pollut 2010 158 529-535
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title = "Exposure of the marine deposit feeder Hydrobia ulvae to sediment associated LAS",

abstract = "Linear Alkylbenzene Sulfonates (LAS) effects (mortality, egestion rate, behaviour) on the marine deposit feeder Hydrobia ulvae were assessed in whole-sediment and water-only systems. The results were combined with a bioenergetic-based kinetic model of exposure pathways to account for the observed toxicity. The 10-d LC50 value based on the freely dissolved fraction was 9.3 times lower in spiked sediment (0.152 +/- 0.001 (95% CI) mg/L) than in water-only (1.390 +/- 0.020 (95% CI) mg/L). Consequently, the actual 10-d LC50 value (208 mg/kg) was overestimated by the Equilibrium Partitioning calculation (1629 mg/kg). This suggests that the sediment associated LAS fraction was bioavailable to the snails. It could also be due to modifications in physiological parameters in absence of sediment, the organism natural substrate.",

author = "A. Mauffret and {Rico Rico}, A. and A. Temara and J. Blasco",

year = "2010",

doi = "10.1016/j.envpol.2009.08.013",

language = "English",

volume = "158",

pages = "529--535",

journal = "Environmental Pollution",

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TY - JOUR

T1 - Exposure of the marine deposit feeder Hydrobia ulvae to sediment associated LAS

AU - Mauffret, A.

AU - Rico Rico, A.

AU - Temara, A.

AU - Blasco, J.

PY - 2010

Y1 - 2010

N2 - Linear Alkylbenzene Sulfonates (LAS) effects (mortality, egestion rate, behaviour) on the marine deposit feeder Hydrobia ulvae were assessed in whole-sediment and water-only systems. The results were combined with a bioenergetic-based kinetic model of exposure pathways to account for the observed toxicity. The 10-d LC50 value based on the freely dissolved fraction was 9.3 times lower in spiked sediment (0.152 +/- 0.001 (95% CI) mg/L) than in water-only (1.390 +/- 0.020 (95% CI) mg/L). Consequently, the actual 10-d LC50 value (208 mg/kg) was overestimated by the Equilibrium Partitioning calculation (1629 mg/kg). This suggests that the sediment associated LAS fraction was bioavailable to the snails. It could also be due to modifications in physiological parameters in absence of sediment, the organism natural substrate.

AB - Linear Alkylbenzene Sulfonates (LAS) effects (mortality, egestion rate, behaviour) on the marine deposit feeder Hydrobia ulvae were assessed in whole-sediment and water-only systems. The results were combined with a bioenergetic-based kinetic model of exposure pathways to account for the observed toxicity. The 10-d LC50 value based on the freely dissolved fraction was 9.3 times lower in spiked sediment (0.152 +/- 0.001 (95% CI) mg/L) than in water-only (1.390 +/- 0.020 (95% CI) mg/L). Consequently, the actual 10-d LC50 value (208 mg/kg) was overestimated by the Equilibrium Partitioning calculation (1629 mg/kg). This suggests that the sediment associated LAS fraction was bioavailable to the snails. It could also be due to modifications in physiological parameters in absence of sediment, the organism natural substrate.

U2 - 10.1016/j.envpol.2009.08.013

DO - 10.1016/j.envpol.2009.08.013

M3 - Article

SN - 0269-7491

VL - 158

SP - 529

EP - 535

JO - Environmental Pollution

JF - Environmental Pollution

IS - 2

ER -

Exposure of the marine deposit feeder Hydrobia ulvae to sediment associated LAS

Abstract

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