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The effects of crude oil and dispersant on the larval sponge holobiont

Show simple item record Luter, HM Whalan, S Andreakis, N Abdul Wahab, MA Botte, ES Negri, AP Webster, NS 2020-02-12T03:52:50Z 2020-02-27T21:51:46Z 2020-02-12T03:52:50Z 2020-02-27T21:51:46Z 2019
dc.identifier.citation Luter HM, Whalan S, Andreakis N, Abdul Wahab MA, Botte ES, Negri AP, Webster NS (2019) The effects of crude oil and dispersant on the larval sponge holobiont. American Society for Microbiology 4(6): e00743-19 en_AU
dc.description.abstract Accidental oil spills from shipping and during extraction can threaten marine biota, particularly coral reef species which are already under pressure from anthropogenic disturbances. Marine sponges are an important structural and functional component of coral reef ecosystems; however, despite their ecological importance, little is known about how sponges and their microbial symbionts respond to petroleum products. Here, we use a systems biology-based approach to assess the effects of water-accommodated fractions (WAF) of crude oil, chemically enhanced water accommodated fractions of crude oil (CWAF), and dispersant (Corexit EC9500A) on the survival, metamorphosis, gene expression, and microbial symbiosis of the abundant reef sponge Rhopaloeides odorabile in larval laboratory-based assays. Larval survival was unaffected by the 100% WAF treatment (107 g liter1 polycyclic aromatic hydrocarbon [PAH]), whereas significant decreases in metamorphosis were observed at 13% WAF (13.9 g liter1 PAH). The CWAF and dispersant treatments were more toxic, with decreases in metamorphosis identified at 0.8% (0.58 g liter1 PAH) and 1.6% (38 mg liter1 Corexit EC9500A), respectively. In addition to the negative impact on larval settlement, significant changes in host gene expression and disruptions to the microbiome were evident, with microbial shifts detected at the lowest treatment level (1.6% WAF; 1.7 g liter1 PAH), including a significant reduction in the relative abundance of a previously described thaumarchaeal symbiont. The responsiveness of the R. odorabile microbial community to the lowest level of hydrocarbon treatment highlights the utility of the sponge microbiome as a sensitive marker for exposure to crude oils and dispersants. en_AU
dc.language.iso en_AU en_AU
dc.publisher American Society for Microbiology en_AU
dc.title The effects of crude oil and dispersant on the larval sponge holobiont en_AU
dc.type journal article en_AU
dc.identifier.doi 10.1128/mSystems.00743-19

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