Impacts of Deepwater Horizon oil and associated dispersant on early development of the Eastern oyster Crassostrea virginica

Vignier, Julien; Donaghy, Ludovic; Soudant, Philippe; Chu, Fu‐Lin E.; Morris, Jeffrey M.; Carney, Michael W.; Lay, Claire R.; Krasnec, Michelle O.; Robert, R.; Volety, Aswani K.

doi:10.1016/j.marpolbul.2015.08.011

Cited by 34 publications

(38 citation statements)

References 64 publications

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“…Unfortunately, they only reported adverse effects of CEWAF on larval survival and larval growth was not assessed. In a previous study, fertilization success and particularly early larval growth of oysters were shown to be negatively affected by exposure to DWH oil/dispersant and to be sensitive toxicological endpoints (Vignier et al, 2015). At equivalent nominal concentrations, dispersed oil (CEWAF) and dispersant alone also showed similar toxicity responses of early life stages of oysters, indicating that most of the toxicity of CEWAF was associated with the Corexit itself (Vignier et al, 2015).…”

Section: Accepted Manuscriptmentioning

confidence: 95%

Lethal and sub-lethal effects of Deepwater Horizon slick oil and dispersant on oyster (Crassostrea virginica) larvae

Vignier

Soudant

Chu

et al. 2016

Marine Environmental Research

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In April 2010, crude oil was spilled from the Deepwater Horizon (DWH) oil platform for 87 days, coincident with the spawning season and recruitment of the oyster, Crassostrea virginica, in the Gulf of Mexico. Impacts of acute exposures to surface-collected DWH oil (HEWAF), dispersed oil (CEWAF) and dispersant alone (Corexit 9500A(®)) on planktonic larval stages of C. virginica (veliger, umbo and pediveliger) were tested in the laboratory. Exposures to HEWAF, CEWAF and dispersant were toxic to larvae impairing growth, settlement success and ultimately survival. Larval growth and settlement were reduced at concentrations of tPAH50 ranging from 1.7 to 106 μg L(-1) for HEWAF and 1.1-35 μg L(-1) for CEWAF, concentrations well within the range of water sampled during the DWH oil spill. Sublethal effects induced by oil and dispersant could have significant ecological implications on oyster populations and on the whole estuarine ecosystem.

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Section: Accepted Manuscriptmentioning

confidence: 95%

Lethal and sub-lethal effects of Deepwater Horizon slick oil and dispersant on oyster (Crassostrea virginica) larvae

Vignier

Soudant

Chu

et al. 2016

Marine Environmental Research

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“…, Vignier et al. ), and low salinities reduce survival of L. irrorata larvae (Bingham ). No studies, however, directly measured the abundance of L. irrorata larvae or immediately post‐metamorphic juveniles in Louisiana during these years, so we lack any direct evidence of these putative mechanisms.…”

Section: Discussionmentioning

confidence: 99%

“…Although the loss and possible reproductive failure of adults at these sites would have caused some reduction in the larval pool, this mechanism cannot explain the recovery of Littoraria population structure after 2011 because densities of Littoraria at oiled sites remained suppressed for more than a year after the spill (Zengel et al 2015). Deepwater Horizon oil was toxic to some marine invertebrate and vertebrate larvae (Goodbody-Gringley et al 2013, Incardona et al 2014, Vignier et al 2015, and low salinities reduce survival of L. irrorata larvae (Bingham 1972a). No studies, however, directly measured the abundance of L. irrorata larvae or immediately post-metamorphic juveniles in Louisiana during these years, so we lack any direct evidence of these putative mechanisms.…”

Section: Discussionmentioning

confidence: 99%

Marine ecoregion and Deepwater Horizon oil spill affect recruitment and population structure of a salt marsh snail

Pennings

Zengel²,

Oehrig³

et al. 2016

Ecosphere

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Abstract. Marine species with planktonic larvae often have high spatial and temporal variation in recruitment that leads to subsequent variation in the ecology of benthic adults. Using a combination of published and unpublished data, we compared the population structure of the salt marsh snail, Littoraria irrorata, between the South Atlantic Bight and the Gulf Coast of the United States to infer geographic differences in recruitment and to test the hypothesis that the Deepwater Horizon oil spill led to widespread recruitment failure of L. irrorata in Louisiana in 2010. Size-frequency distributions in both ecoregions were bimodal, with troughs in the distributions consistent with a transition from sub-adults to adults at~13 mm in shell length as reported in the literature; however, adult snails reached larger sizes in the Gulf Coast. The ratio of sub-adults to adults was 1.5-2 times greater in the South Atlantic Bight than the Gulf Coast, consistent with higher recruitment rates in the South Atlantic Bight. Higher recruitment rates in the South Atlantic Bight could contribute to higher snail densities and reduced adult growth in this region. The ratio of sub-adults to adults in Louisiana was lower in 2011 than in previous years, and began to recover in 2012-2014, consistent with widespread recruitment failure in 2010, when large expanses of spilled oil were present in coastal waters. Our results reveal an important difference in the ecology of a key salt marsh invertebrate between the two ecoregions, and also suggest that the Deepwater Horizon oil spill may have caused widespread recruitment failure in this species and perhaps others with similar planktonic larval stages.

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“…Following spawning and fertilization, developing free-swimming C. virginica larvae spend 2 -3 weeks in the water column, usually floating near the surface, until they settle on a suitable substrate (Bahr and Lanier, 1981). Recent studies have demonstrated the toxic effects of DWH crude oil on the early life stages of C. virginica , notably, damage to sperm and oocyte functions causing a reduction in fertilization success (Volety et al, 2016;Vignier et al, 2017), an increase in embryo and larval defects, retardation in larval growth and a decline in settlement success, and ultimately mortalities (Laramore et al, 2014;Vignier et al, 2015Vignier et al, , 2016Langdon et al, 2016;Stefansson et al, 2016;Finch et al, 2016Finch et al, , 2018Boulais et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Interactions between Crassostrea virginica larvae and Deepwater Horizon oil: Toxic effects via dietary exposure

Vignier

Rolton

Soudant

et al. 2019

Environmental Pollution

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The Deepwater Horizon (DWH) disaster released crude oil in the Gulf of Mexico for 87 days, overlapping with the reproductive season and recruitment of the oyster Crassostrea virginica. The pelagic larval life stages of C. virginica are particularly vulnerable to contaminants such as polycyclic aromatic hydrocarbons (PAHs) and oil droplets. Based on their lipophilic properties, PAHs and oil droplets can adsorb onto phytoplankton and filter-feeding C. virginica larvae may be exposed to these contaminants bound to suspended sediment, adsorbed onto algal and other particles, or in solution. This study examined the effects of exposure of C. virginica larvae to algae mixed with DWH oil. In a 14day laboratory exposure, 5 day-old C. virginica larvae were exposed to Tisochrysis lutea mixed with four concentrations of unfiltered DWH oil (HEWAF) in a static renewal system. Larval growth, feeding capacity, abnormality and mortality were monitored throughout the exposure. Total PAH (n = 50) content of the water medium, in which larvae were grown, were quantified by GC/MS-SIM. Oil droplets were observed bound to algae, resulting in particles in the size-range of food ingested by oyster larvae (1-30 μm). After 14 days of exposure, larval growth and survival were negatively affected at concentrations of tPAH50 as low as 1.6 μg L −1. GC/MS-SIM analysis of the exposure medium confirmed that certain PAHs were also adsorbed by T. lutea and taken up by oyster larvae via ingestion of oil droplets and/or contaminated algae. Long-term exposure to chronic levels of PAH (1.6-78 μg tPAH50 L −1) was shown to negatively affect larval survival. This study demonstrates that dietary exposure of oyster larvae to DWH oil is a realistic route of crude oil toxicity and may have serious implications on the planktonic community and the food chain. Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

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Impacts of Deepwater Horizon oil and associated dispersant on early development of the Eastern oyster Crassostrea virginica

Cited by 34 publications

References 64 publications

Lethal and sub-lethal effects of Deepwater Horizon slick oil and dispersant on oyster (Crassostrea virginica) larvae

Lethal and sub-lethal effects of Deepwater Horizon slick oil and dispersant on oyster (Crassostrea virginica) larvae

Marine ecoregion and Deepwater Horizon oil spill affect recruitment and population structure of a salt marsh snail

Interactions between Crassostrea virginica larvae and Deepwater Horizon oil: Toxic effects via dietary exposure

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