TY - JOUR
T1 - Distribution of heavy metals in crop soils from an agricultural region of the Yucatan Peninsula and biochemical changes in earthworm Eisenia foetida exposed experimentally
AU - Dzul-Caamal, Ricardo
AU - Vega-López, Armando
AU - Osten, Jaime Rendón von
N1 - Publisher Copyright:
© 2020, Springer Nature Switzerland AG.
PY - 2020/6/1
Y1 - 2020/6/1
N2 - Heavy metals (HM) are natural components of agricultural soils. However, excessive use of agrochemicals (fertilizers and pesticides) can increase the concentration of these elements, making them harmful to crops and soil biota. Therefore, this study aimed to evaluate the concentrations of 6 HM (Cr, Mn, Cu, Zn, Al, and Fe) in soils collected from a typical agricultural region of the Yucatan Peninsula, Mexico, and relate their effects on weight, biotransformation (EROD, GST), and oxidative stress (SOD, CAT, LPO, and MT) in the earthworm Eisenia foetida. The results showed different concentrations of HM accumulation in soils, in the following order, Fe (598.74 ± 223.81 μg g−1), Al (145.30 ± 33.54 μg g−1), Cr (88.38 ± 36.23 μg g−1), Mn (69.53 ± 22.48 μg g−1), Zn (54.10 ± 12.04 μg g−1), and Cu (24.91 ± 12.40 μg g−1), the soils with maize, soybean, and chihua squash crops being the ones with the highest distribution and availability of these elements. These concentrations of metals did not produce mortality. However, Cr, Fe, and Al induced a significant biomass loss of E. foetida. The integrated biomarker response version 2 revealed that soil with maize cultivation was affected the most, with the earthworms exposed to this soil showing greater variations in the dominant biological responses including EROD, TBARS, SOD, and MT (IBRv2 = 9.73). PCA analysis indicated a strong positive relationship between these oxidative stress biomarkers and Cu and Zn concentrations. These findings provide a reference guide that should be part of the monitoring and management programs for different agricultural types in the region under study.
AB - Heavy metals (HM) are natural components of agricultural soils. However, excessive use of agrochemicals (fertilizers and pesticides) can increase the concentration of these elements, making them harmful to crops and soil biota. Therefore, this study aimed to evaluate the concentrations of 6 HM (Cr, Mn, Cu, Zn, Al, and Fe) in soils collected from a typical agricultural region of the Yucatan Peninsula, Mexico, and relate their effects on weight, biotransformation (EROD, GST), and oxidative stress (SOD, CAT, LPO, and MT) in the earthworm Eisenia foetida. The results showed different concentrations of HM accumulation in soils, in the following order, Fe (598.74 ± 223.81 μg g−1), Al (145.30 ± 33.54 μg g−1), Cr (88.38 ± 36.23 μg g−1), Mn (69.53 ± 22.48 μg g−1), Zn (54.10 ± 12.04 μg g−1), and Cu (24.91 ± 12.40 μg g−1), the soils with maize, soybean, and chihua squash crops being the ones with the highest distribution and availability of these elements. These concentrations of metals did not produce mortality. However, Cr, Fe, and Al induced a significant biomass loss of E. foetida. The integrated biomarker response version 2 revealed that soil with maize cultivation was affected the most, with the earthworms exposed to this soil showing greater variations in the dominant biological responses including EROD, TBARS, SOD, and MT (IBRv2 = 9.73). PCA analysis indicated a strong positive relationship between these oxidative stress biomarkers and Cu and Zn concentrations. These findings provide a reference guide that should be part of the monitoring and management programs for different agricultural types in the region under study.
KW - Agricultural soils
KW - Biomarkers
KW - Eisenia foetida
KW - Heavy metals
KW - Integrated analysis
UR - http://www.scopus.com/inward/record.url?scp=85084285211&partnerID=8YFLogxK
U2 - 10.1007/s10661-020-08273-7
DO - 10.1007/s10661-020-08273-7
M3 - Artículo
C2 - 32382918
AN - SCOPUS:85084285211
SN - 0167-6369
VL - 192
JO - Environmental Monitoring and Assessment
JF - Environmental Monitoring and Assessment
IS - 6
M1 - 338
ER -