Resumo

CANO GARCIA, Arely; CERNA CHAVEZ, Ernesto; CEBALLOS CEBALLOS, Augusto Gil  e  OCHOA FUENTES, Yisa María. Detection and quantification of pesticides in Cynomys mexicanus feces from two states in northern Mexico. Acta univ [online]. 2023, vol.33, e3865.  Epub 08-Mar-2024. ISSN 2007-9621.  https://doi.org/10.15174/au.2023.3865.

The Mexican prairie dog (Cynomys mexicanus) is one of the emblematic and endemic species to northern Mexico, and it is of importance to the ecosystem where it lives (the grasslands). It is currently an endangered species due to the growth of the agricultural frontier, causing its exposure to various chemicals, such as pesticides applied to crops. The objective of this work was to analyze the feces of Mexican prairie dogs from the states of Coahuila and Nuevo León in order to detect and quantify pesticide residues. A total of 58 samples were analyzed by high performance liquid chromatography. The results show high concentrations of glyphosate and methamidophos of 2.50 mg/g-12.7 mg/g and 2.9 mg/g-14.7 mg/g, respectively. These ranges can cause damage in the organism of the Mexican prairie dog, interfering in reproduction processes, thus influencing the decrease of their populations.

Palavras-chave : Cynomys mexicanus; methamidophos; glyphosate; mammals; pesticides.

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