Phthalate ester and cholesterol profiles of blubber samples of the free-ranging Amazon River dolphin (Cetacea: Iniidae: Inia geoffrensis) in the Brazilian Amazon.

Autor: de Lima LF; Laboratório de Morfogênese e Bioquímica Vegetal, Universidade Federal de Santa Catarina, Florianópolis, Brazil. Electronic address: lucas_fazardo@outlook.com., Piccinin INL; Laboratório de Morfogênese e Bioquímica Vegetal, Universidade Federal de Santa Catarina, Florianópolis, Brazil., Martha GG; Laboratório de Morfogênese e Bioquímica Vegetal, Universidade Federal de Santa Catarina, Florianópolis, Brazil., Lopes S; Laboratório de Morfogênese e Bioquímica Vegetal, Universidade Federal de Santa Catarina, Florianópolis, Brazil., Rodrigues TCS; Associação R3 Animal, Florianópolis, SC, Brazil; National Marine Mammal Foundation, San Diego, CA, United States., Marmontel M; Instituto de Desenvolvimento Sustentável Mamirauá, AM, Brazil., Kolesnikovas CKM; Associação R3 Animal, Florianópolis, SC, Brazil., Maraschin M; Laboratório de Morfogênese e Bioquímica Vegetal, Universidade Federal de Santa Catarina, Florianópolis, Brazil.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Dec; Vol. 209 (Pt B), pp. 117211. Date of Electronic Publication: 2024 Nov 02.
DOI: 10.1016/j.marpolbul.2024.117211
Abstrakt: This study assessed the exposure of free-ranging Amazon River dolphins (Inia geoffrensis) to phthalate esters (PAE) in a remote area of the Brazilian Amazon. Blubber samples were analyzed for four PAEs - dimethyl phthalate, diethyl phthalate, dibutyl phthalate, and di(2-ethylhexyl) phthalate - and cholesterol contents to evaluate potential metabolic disturbances. All dolphins were contaminated with at least two PAEs, with DEHP (242.16 ng/μL) and DBP (191.62 ng/μL) being the most frequent, detected in 93 % and 79 % of the sample, respectively. Significant positive correlations were found between DBP and DEP (r = 0.857), DEHP and DEP (r = 0.794), and DBP and body length (r = 0.642), suggesting bioaccumulation. Despite the cholesterol data not showing a correlation with the other findings, these results highlight PAE pollution in a supposedly pristine environment and their potential impact on the health and conservation of Amazon River dolphins' health and Amazonian ecosystem.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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