Article
Arsenic contamination in widely consumed Caribbean sharpnose sharks in southeastern Brazil: Baseline data and concerns regarding fisheries resources
Registro en:
MACIEL, Oswaldo Luiz de C. et al. Arsenic contamination in widely consumed Caribbean sharpnose sharks in southeastern Brazil: Baseline data and concerns regarding fisheries resources. Marine Pollution Bulletin, v. 172, 112905, p. 1 - 8, Aug. 2021.
0025-326X
10.1016/j.marpolbul.2021.112905
Autor
Maciel, Oswaldo Luiz de C.
Willmer, Isabel Q.
Saint'Pierre, Tatiana D.
Machado, Wilson
Siciliano, Salvatore
Hauser-Davis, Rachel Ann
Resumen
Although shark meat is consumed worldwide, elevated arsenic (As) concentrations have been increasingly reported.
The Caribbean sharpnose shark (Rhizoprionodon porosus) is a widely consumed fishing resource in Brazil,
with scarce information on As burdens to date. Herein, commercial-sized juvenile Caribbean sharpnose sharks
from Rio de Janeiro (Brazil) were assessed in this regard, presenting significantly higher hepatic As concentrations
in males (8.24 ± 1.20 mg kg-1 wet weight; n = 12) compared to females (6.59 ± 1.87 mg kg-1 w.w.; n =
8), and a positive correlation (r = 0.74) was noted between female muscle and liver As concentrations, indicating
systemic inter-tissue transport not evidenced in males. Arsenic concentrations were over the maximum
permissible As limit established in Brazilian legislation for seafood and calculated Target Hazard Quotients
suggest consumption risks, although cancer risks were not evidenced. Therefore, Public Health concerns with
regard to Caribbean sharpnose shark As burdens deserve careful attention. 2023