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PAHs in franciscana dolphins from the Southwestern Atlantic Ocean: Concentration and maternal transfer assessments.

Authors :
Santos-Neto EB
Manhães BMR
Oliveira-Ferreira N
Cordeiro CVS
Corrêa CAC
Brião JA
Guari EB
Botta S
Colosio AC
Ramos HGC
Barbosa LA
Bertozzi C
Cunha IAG
Carreira RS
Meire RO
Bisi TL
Azevedo AF
Cunha HA
Lailson-Brito J
Source :
Marine pollution bulletin [Mar Pollut Bull] 2024 Jun; Vol. 203, pp. 116455. Date of Electronic Publication: 2024 May 11.
Publication Year :
2024

Abstract

Polycyclic aromatic hydrocarbons (PAHs) are organic compounds ubiquitous in the environment and known for their toxic, mutagenic, and carcinogenic effects. These compounds can bioaccumulate in the biota and be transferred through trophic webs. The franciscana dolphin (Pontoporia blainvillei), as top predators, can be an environmental sentinels. Thus, this study aimed to provide data about PAHs concentration in their hepatic tissue collected on the coast of Espírito Santo (Franciscana Management Area, FMA Ia), Rio de Janeiro (FMA IIa), and São Paulo states (FMA IIb), in Southeastern Brazil. PAHs were detected in 86 % of franciscana dolphins (n = 50). The highest ∑PAHs <subscript>Total</subscript> median concentration was reported in FMA Ia followed by FMA IIb and FMA IIa (1055.6; 523.9, and 72.1 ng.g <superscript>-1</superscript> lipid weight, respectively). Phenanthrene was detected in one fetus and two neonates, showing maternal transfer of PAHs in these dolphins. Evaluating PAHs with potential toxic effects is of utmost importance for the conservation of a threatened species.<br />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.<br /> (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Details

Language :
English
ISSN :
1879-3363
Volume :
203
Database :
MEDLINE
Journal :
Marine pollution bulletin
Publication Type :
Academic Journal
Accession number :
38735171
Full Text :
https://doi.org/10.1016/j.marpolbul.2024.116455