Levels of persistent organic pollutants in cane toads (Rhinella marina) differ among sites with varying industrial and agricultural activities

In this study, we captured cane toads (Rhinella marina) in four sites located in different regions affected by anthropogenic activities in Mexico. Subsequently we analyzed liver tissue for the presence of organochlorine pesticides (OCs) and polychlorinated biphenyls (PCBs) The levels of these POPs in the toads’ livers ranged from 863.2 to 3109.6 ng/g of lipid weight across all sites. A multivariate statistical analysis highlighted two sites with the highest POPs levels, with the most polluted site displaying a high level of PCBs, suggesting influence of industrial activities. The second most polluted site displayed significant amounts of OCs, linking this location to agricultural activity. Additionally, we found pesticide metabolites and isomers that allowed us to distinguish past and recent exposure events. Our observations indicate that R. marina is suitable bioindicator of sites imOrganochlorine pesticidespacted by anthropogenic activities.

Bibliographic Details

Main Authors:	Cruz Santiago, Omar Doctor autor 22461, Flores Ramírez, Rogelio autor, Ilizaliturri Hernández, César Arturo autor 12431, Méndez Rodríguez, Karen B. autora, Cilia López, Virginia G. autora, Espinosa Reyes, Guillermo autor 12435, González Mille, Donaji Josefina autora 12434
Format:	Texto biblioteca
Language:	eng
Subjects:	Rhinella marina, Anfibios, Plaguicidas organoclorados, Bifenilos policlorados, Indicadores biológicos, Actividades antropogénicas, Contaminación,
Online Access:	https://doi.org/10.1016/j.etap.2023.104280
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