BECAS
LARES Betsabe AilÉn
artículos
Título:
Chemical characterization and toxicity of water-accommodated fraction of oil on the South American native species Hyalella curvispina
Autor/es:
DEL BRIO JOSEFINA; CRISTINA MÓNICA MONTAGNA; LARES BETSABÉ AILÉN; PAROLO MARÍA EUGENIA; VENTURINO ANDRÉS
Revista:
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2018
ISSN:
1382-6689
Resumen:
Chemical and toxicological crude oil analysis was performed on water-accommodated fraction of oil (WAF). Thisstudy characterized the chemical composition of WAF and its dissipation over a period of 192 h. Acute (96 h) andchronic (14 d) toxicity of WAF were evaluated on Hyalella curvispina from both reference (Los Barreales lake, LB)and hydrocarbon-contaminated (Durán stream, DS) sites. The total hydrocarbon (TPHs) concentration in WAFwas 2.18 mg L−1. The dissipation rates of hydrocarbons in WAF showed a first-order kinetics, with half-livesranging between 65 h-200 h. Amphipods from LB showed acute and chronic LC50 values of 0.33 and0.018 mg L−1, respectively. Amphipods from DS exposed to pure WAF showed no mortality in either acute orchronic assays. Further biochemical and molecular research is required to determine the mechanisms underlyingthe resistance to WAF exposure on DS amphipods.
