Effects of sediment amended with Deepwater Horizon incident slick oil on the infaunal amphipod Leptocheirus plumulosus

Lotufo, G. R.; Farrar, J. D.; Biedenbach, J. M.; Laird, J. G.; Krasnec, M. O.; Lay, C.; Morris, J. M.; Gielazyn, M. L.

doi:10.1016/j.marpolbul.2016.05.073

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Effects of sediment amended with Deepwater Horizon incident slick oil on the infaunal amphipod Leptocheirus plumulosus

Published Date:

2016

Source:

Marine Pollution Bulletin, 109(1), 253-258.

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Personal Author:

Lotufo, G. R. ; Farrar, J. D. ; Biedenbach, J. M. ; Laird, J. G. ; Krasnec, M. O. ; ... More ▼

Description:

Crude oil released from the Deepwater Horizon disaster into the Gulf of Mexico posed potential impacts to infaunal invertebrates inhabiting near shore habitats. The effects of sediment-associated weathered slick oil on the amphipod Leptocheirus plumulosus was assessed using 28-d exposures to total PAH sediment concentrations ranging from 0.3 to 24 mg/kg (sum of 50 PAHs or tPAH50). Survival and growth rate were significantly decreased in the 2.6,11.4 and 24.2 mg/kg treatments, but only growth in 5.5 mg/kg. Offspring production was dramatically decreased but was variable and significantly different only for 24.2 mg/kg. The concentrations associated with 20% decreases relative to reference were 1.05 (95% CI = 0-2.89) mg/kg tPAH50 for growth rate and 0.632 (95% CI = 0.11-2.15) mg/kg tPAH50 for offspring production. The concentrations of PAHs affecting amphipods are within the range of concentrations measured in marsh areas reportedly impacted by DWH oil after its release. Published by Elsevier Ltd.

DOI:

http://dx.doi.org/10.1016/j.marpolbul.2016.05.073

Document Type:

Journal Article

Collection(s):

National Ocean Service (NOS)

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