Avoidance behavior of Eisenia fetida in oxytetracycline- and heavy metal-contaminated soils |
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| Affiliation: | 1. Universidad San Jorge, Instituto de Medio Ambiente, Facultad de Ciencias de la Salud, GIMACÉS, Villanueva de Gállego, Zaragoza 50830, Spain;2. Universidad de Zaragoza, Instituto de Investigación en Ingeniería de Aragón (I3A), GATHERS, Calle Mariano Esquillor, s/n, Edificio de Institutos, I3A, Bloque 5, 2.ª planta, 20018 Zaragoza, Spain |
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| Abstract: | To determine the behavior of oxytetracycline (OTC) and heavy metals in soil, this study assessed the pollutant-induced avoidance behavior of earthworms (E. fetida) exposed to zinc (Zn2+), lead (Pb2+), and OTC in soil. The results showed a clear avoidance response within 48 h of exposure to the highest concentrations of pollutants. Moreover, E. fetida was shown to be more sensitive to Zn2+ than to Pb2+ and OTC. Compared with OTC alone, the net response of earthworms increased in the OTC-Zn2+ and OTC-Pb2+ combined treatments, indicating a synergistic effect. Moreover, the net response (NR) of the earthworms was higher for OTC-Zn2+ than it was for OTC-Pb2+, possibly reflecting the differences in essential characteristics of Zn and Pb. |
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| Keywords: | Avoidance behavior Oxytetracycline Lead Zinc |
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