Ecotoxicology of polycyclic aromatic hydrocarbons and petroleum wastewater in the orinoquia region

Calderón-Delgado, Ivonne; Velasco Santamaría, Yohana María; Corredor-Santamaría, Wilson

Publicación:
Ecotoxicology of polycyclic aromatic hydrocarbons and petroleum wastewater in the orinoquia region

dc.contributor.author	Calderón-Delgado, Ivonne
dc.contributor.author	Velasco Santamaría, Yohana María
dc.contributor.author	Corredor-Santamaría, Wilson
dc.date.accessioned	2024-11-15T21:48:53Z
dc.date.available	2024-11-15T21:48:53Z
dc.date.issued	2023-09-20
dc.description.abstract	Polycyclic aromatic hydrocarbons (PAH) are ubiquitous and characterized by low solubility, persistence in the environment, bioaccumulation in biota and high toxicity. Aquatic systems receive PAH through atmospheric deposition and direct runoff release, with the organisms that inhabit them being their main targets. Among these, ﬁsh are of particular interest because they occupy key positions in aquatic and terrestrial food webs. Petroleum extraction is one of the most relevant sectors in Colombia's economy; however, the environmental impact due to oil extraction and spillage accidents has generated contamination of soils and water sources, mortality of fauna and ﬂora or changes in the dynamics of natural ecosystems, among others. Biomonitoring of oil pollution using aquatic organisms, especially native species has a great ecological relevance. In this sense, ﬁsh are considered as one of the main sentinel species to assess the state of aquatic ecosystems because they are ubiquitous in most aquatic environments exposed to contaminants and also because of their ecological relevance. Our data show alterations in ﬁsh from oil industry wastewater discharge sites and ﬁsh exposed to different PAH. In fact, concentrations of 250 and 70 ng/L of naphthalene (NAP) and phenanthrene (PHE), respectively, were recorded in rivers exposed to the discharge of produced water. Subacute exposures to sublethal concentrations of NAP 100 µg/g, PHE 50 µg/g and benzo[a]pyrene (BaP) 10 µg/g were evaluated. The results shown presence of genotoxicity in peripheral blood erythrocytes and nuclear abnormalities being higher in ﬁsh exposed to PHE, followed by BaP, and NAP, alteration in antioxidant response, ﬁsh exposed to BaP showed a signiﬁcant increase in 7ethoxyresoruﬁn-O-deethylase activity compared to the control, and presence of deleterious changes in tissue architecture such as hyperemia, degeneration of the nuclei, cytoplasmic degeneration, and vacuolization that could lead in the long term to a decline in ﬁsh populations exposed to these conditions. In conclusion, the results show that native Colombian ﬁsh such as Aequidens metae, Astyanax gr. bimaculatus and Piaractus orinoquencis are good sentinels of freshwaters potentially contaminated by hydrocarbons or in laboratory studies aimed at understanding the impact of petroleum compounds. Acknowledgment: This study was funded by Colciencias-ANH and Universidad de los Llanos Project number 112272151869, grant 721 – 2015.	eng
dc.description.notes	SETAC Latin America 15th Biennial Meeting
dc.format.extent	769 páginas
dc.format.mimetype	application/pdf
dc.identifier.citation	Calderón Delgado, I., Corredor Santamaría, W. y Velasco Santamaría, Y. M. (2019). Ecotoxicology of polycyclic aromatic hydrocarbons and petroleum wastewater in the orinoquia region (p. 692). Universidad de los Llanos.
dc.identifier.instname	Universidad de los Llanos
dc.identifier.reponame	Repositorio digital Universidad de los Llanos
dc.identifier.repourl	https://repositorio.unillanos.edu.co
dc.identifier.uri	https://repositorio.unillanos.edu.co/handle/001/4826
dc.language.iso	eng
dc.publisher	Society of Environmental Toxicology and Chemistry (SETAC) Latin America 15 Biennial Meeting
dc.publisher	Universidad de los Llanos
dc.publisher.place	Montevideo, Uruguay
dc.rights	Derechos Reservados - Universidad de los Llanos, 2023	spa
dc.rights.accessrights	info:eu-repo/semantics/openAccess
dc.rights.coar	http://purl.org/coar/access_right/c_abf2
dc.rights.license	Atribución-NoComercial-CompartirIgual 4.0 Internacional (CC BY-NC-SA 4.0)
dc.rights.uri	https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.source	https://www.setac.org/discover-events/global-meetings/sla-15th-biennial-meeting.html
dc.source	https://drive.google.com/drive/u/1/folders/1Jj6fqloG-A95gTWlrhYFZRfIHkpiNSPO
dc.subject.proposal	PAH	eng
dc.subject.proposal	Petroleum	eng
dc.subject.proposal	Genotoxicity	eng
dc.subject.proposal	EROD	eng
dc.subject.proposal	Fish	eng
dc.title	Ecotoxicology of polycyclic aromatic hydrocarbons and petroleum wastewater in the orinoquia region	eng
dc.type	Evento científico
dc.type.category	Divulgación pública de la ciencia
dc.type.coar	http://purl.org/coar/resource_type/c_3248
dc.type.coarversion	http://purl.org/coar/version/c_970fb48d4fbd8a85
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person.identifier.orcid	0000-0002-6845-1663
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