Oil spill causes mass mortality of sea snakes in the Gulf of Oman

Yaghmour, Fadi; Els, Johannes; Maio, Elisa; Whittington-Jones, Brendan; Samara, Fatin; Sayed, Yehya El; Ploeg, Richard; Alzaabi, Alyazia; Philip, Susannah; Budd, Jane; Mupandawana, Marshall

doi:10.1016/j.scitotenv.2022.154072

Cited by 33 publications

(11 citation statements)

References 31 publications

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“…Oil spills not only affect the fish species but also other marine fauna. Oil spills are responsible for the mortalities of four different species of sea snakes in the Gulf of Oman 10 . The study showed that the majority (~ 85%) of sea snakes had oil covering on 75–100% of their bodies.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome analysis of Sparidentex hasta larvae exposed to water-accommodated fraction of Kuwait crude oil

Kumar,

Karam,

Shajan

et al. 2024

Sci Rep

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Anthropogenic activities have been shown to significantly affect marine life. Water pollution and oil spills are particularly deleterious to the fish population, especially during their larval stage. In this study, Sobaity-sea bream Sparidentex hasta (Valenciennes, 1830) larvae were exposed to serial dilutions of water-accommodated fraction of Kuwait crude oil (KCO-WAF) for varying durations (3, 6, 24, 48, 72 or 96 h) in acute exposure regime. Gene expression was assessed using RNA sequencing and validated through RT-qPCR. The RNA sequencing data were aligned to the sequenced genome, and differentially expressed genes were identified in response to treatment with or without KCO-WAF at various exposure times. The highest number of differentially expressed genes was observed at the early time point of 6 h of post-exposure to KCO-WAF. The lowest number of differentially expressed genes were noticed at 96 h of treatment indicating early response of the larvae to KCO-WAF contaminant. The acquired information on the differentially expressed genes was then used for functional and pathway analysis. More than 90% of the differentially expressed genes had a significant BLAST match, with the two most common matching species being Acanthopagrus latus and Sparus aurata. Approximately 65% of the differentially expressed genes had Gene Ontology annotations, whereas > 35% of the genes had KEGG pathway annotations. The differentially expressed genes were found to be enriched for various signaling pathways (e.g., MAPK, cAMP, PI3K-Akt) and nervous system-related pathways (e.g., neurodegeneration, axon guidance, glutamatergic synapse, GABAergic synapse). Early exposure modulated the signaling pathways, while KCO-WAF exposure of larvae for a longer duration affected the neurodegenerative/nervous system-related pathways. RT-qPCR analysis confirmed the differential expression of genes at each time point. These findings provide insights into the underlying molecular mechanisms of the deleterious effects of acute exposure to oil pollution—on marine fish populations, particularly at the early larval stage of Sparidentex hasta.

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Section: Introductionmentioning

confidence: 99%

Transcriptome analysis of Sparidentex hasta larvae exposed to water-accommodated fraction of Kuwait crude oil

Kumar,

Karam,

Shajan

et al. 2024

Sci Rep

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“…For example, in 2019, there was a spill of 5000 tons of oil off the coast of Brazil, contaminating 3 km of coastline 7 ; in 2021, a massive oil spill caused the mortality of marine species in the Gulf of Oman, United Arab Emirates. 8 It is estimated that 3% of all oil spilled at sea comes from oil extraction, 12% during transportation, and 22% through illegal discharge. 9 In order to avoid environmental contamination and reduce costs with governmental sanctions, as well as the utilization of waste, technologies that remove both PAH from water and oil from the sea are currently being developed.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Another serious problem for this industrial segment is frequent oil spills that generate serious environmental disasters. For example, in 2019, there was a spill of 5000 tons of oil off the coast of Brazil, contaminating 3 km of coastline; in 2021, a massive oil spill caused the mortality of marine species in the Gulf of Oman, United Arab Emirates . It is estimated that 3% of all oil spilled at sea comes from oil extraction, 12% during transportation, and 22% through illegal discharge .…”

Section: Introductionmentioning

confidence: 99%

Magnetic Membranes for the Remediation of Oil-Industry Effluents: Efficient Polyaromatic Hydrocarbon Removal and Marine Oil-Spill Cleanup

Costa,

Oliveira,

Romão

et al. 2023

ACS EST Water

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The contamination of aquatic bodies from oil or petroleum spills is increasingly common throughout the world. In this context, our very current and relevant approach was based on the preparation of magnetic mixed matrix membranes (MMMs) from the incorporation of magnetic nanomaterials to act in crude oil remediation systems. The MMMs were prepared via the casting method using magnetic nanomaterials as filler materials. They were applied to water static sorption, transport tests, permeation of polycyclic aromatic hydrocarbon (PAH), and crude oil remediation. The MMMs exhibited a homogeneous aspect with a good dispersion and excellent compatibility between the magnetic nanomaterials and the polymeric matrices as well as a good elemental distribution in the MMMs. Furthermore, it was possible to observe a decrease in the glass transition temperature (T g) for the poly(sulfone)-based (PSf) MMMs with cobalt ferrite (CoFe2O4), and the same behavior was seen for the poly(sulfone) acrylate-based (PSf-Ac) MMM with 1.0 wt % of MCM-48-CoFe2O4–NH2 (Mobil Composition Matter of number 48). The PAH permeation tests showed that a permeation equilibrium was obtained in 24 h. The permeation, retention, and removal rates varied between: (i) 2.22–5.40%, 94.60–97.78%, and 13.91–86.53% for the PSf-based membranes and (ii) 2.23–5.44%, 94.56–97.77%, and 1.67–95.73% for the PSf-Ac-based MMMs. Finally, the results of oil remediation exhibited excellent removal values for light and heavy oil in fresh water and seawater, whose removal efficiency was between 94.08 and 99.99%. Therefore, we are optimistic about the possibility of proposing the real use of a multifunctional membrane to act in the efficient removal of organic pollutants from wastewater as well as in the magnetic removal of petroleum in aquatic bodies.

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“…In recent years, because of the 2021 U.S. California crude oil spill and the 2022 oil spill off the coast of Ceará (northeast Brazil), the problem of marine oil spills has attracted widespread attention from countries worldwide to all sectors of society. Oil spills have caused irreversible environmental damage and ecological damage by killing fish, snakes, and polar bears, among other creatures. Therefore, the efficient separation of oil from water and even the biodegradation of oil have emerged as hot topics of research at present …”

Section: Introductionmentioning

confidence: 99%

Preparation of a Magnetic Core–Shell Bioreactor for Oil/Water Separation and Biodegradation

Chen,

Qu,

et al. 2023

Langmuir

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With the frequent occurrence of offshore oil spills, the effective separation and treatment of oily wastewater are essential to the environment. In this work, the core–shell bioreactor (abbreviated as Fe3O4/MHNTs-CNF@aerogel) was prepared with a core composed of camphor leaf cellulose-based aerogels for loading microorganisms and a shell derived from hydrophobic silane-modified halloysite doping with Fe3O4 for selective absorption of oil and maganetic recycling. The core–shell-structured bioreactor Fe3O4/MHNTs-CNF@aerogel has excellent self-floating properties and can float on water for up to 100 days. The whole core–shell structure not only has excellent oil/water separation performance but also has good microbial degradation performance. By applying it in water containing 5% diesel for the biodegradation test, the biodegradation efficiency of Fe3O4/MHNTs-CNF@aerogel for diesel can reach 82.4% in 10 days. The efficiency was 20% higher than for free microorganisms, and it still had excellent degradation ability after three degradation cycles, with a degradation rate of over 75%. In addition, the result obtained from the study on environmental tolerance shows that Fe3O4/MHNTs-CNF@aerogel possessed a strong tolerance ability under different pH and salinity conditions. The Fe3O4/MHNTs-CNF@aerogel also has superior mechanical properties; i.e., nearly no deformation occurs at 30 kPa. Compared with those conventional oil/water separation materials which can only absorb or separate the oils for water with limited capacity and taking the risk of secondary contamination, our core–shell-structured bioreactor is capable of not only selectively absorbing oil from water through its hydrophobic shell but also degrading it into a nontoxic substance by its microorganism-loaded core, thus showing great potential for practical application in oily wastewater treatment.

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Oil spill causes mass mortality of sea snakes in the Gulf of Oman

Cited by 33 publications

References 31 publications

Transcriptome analysis of Sparidentex hasta larvae exposed to water-accommodated fraction of Kuwait crude oil

Transcriptome analysis of Sparidentex hasta larvae exposed to water-accommodated fraction of Kuwait crude oil

Magnetic Membranes for the Remediation of Oil-Industry Effluents: Efficient Polyaromatic Hydrocarbon Removal and Marine Oil-Spill Cleanup

Preparation of a Magnetic Core–Shell Bioreactor for Oil/Water Separation and Biodegradation

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