RT journal article
T1 Tracking pesticides from upstream plantations to native bivalves in a tropical wetland habitat in Costa Rica
A1 Castro Vargas, Soledad
A1 Alvarez Fernandez, Santiago
A1 Ramírez Muñoz, Fernando
A1 Ruepert, Clemens
A1 Martín Díaz, María Laura
A2 Química Física
K1 Mangrove
K1 Anadara tuberculosa
K1 Agriculture
K1 Biomarkers
K1 Piangua
K1 Oxidative stress
K1 Bivalve mollusc
AB Mangrove forests are highly productive tropical and subtropical ecosystems providing ecosystem services and supporting local livelihoods, while being influenced by contamination both from land and sea. In the tropics, high temperatures and humidity increase crop susceptibility to pests and pathogens, requiring more frequent pesticide use and raising contamination risks. Costa Rica serves as a key case study, exemplifying the challenges of pesticide management in tropical regions characterized by intensive agriculture. This study identified and quantified pesticide residues in water and sediment samples in the T´ erraba-Sierpe National Wetland and influence areas. To determine pesticide exposure and its effects, the native bivalve mollusc Anadara tuberculosa was selected as a bioindicator species. Results evidenced the presence of pesticides in the T´erraba River waters, the northern T´ erraba-influenced wetland area, as well as in A. tuberculosa, with diuron, carbendazim, diazinon, and ethoprophos appearing at the highest concentrations in water. Moreover, glutathione S-transferase, cholinesterase, and ethoxyresorufin-O-deethylase biomarkers showed statistically significant differences with a control site (p < 0.05). Considering the geographical distribution of these substances and their utilization in pineapple cultivation, there was a plausible association between this agricultural activity and the observed impact on the wetland aquatic environment. The study supports the potential of A. tuberculosa biomarkers, particularly glutathione S-transferase and cholinesterase activities, to investigate pesticide effects in coastal systems potentially affected by pesticide contamination, develop environmental monitoring and inform pesticide regulations
PB Elsevier
SN 1879-3363
YR 2025
FD 2025-11-10
LK http://hdl.handle.net/10498/39408
UL http://hdl.handle.net/10498/39408
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026