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Evaluation of stress response in black-tailed prairie dogs (Cynomys ludovicianus) in arid regions from colonies in Chihuahua Mexico

November 13, 2022 by PDP

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Gen Comp Endocrinol. 2022 Oct 28;330:114150. doi: 10.1016/j.ygcen.2022.114150. Online ahead of print.

Authors

gay old man tube  1 , vegans only dating  2 , A De Villa-Meza  3 , M C Romano  4

Affiliations

  • 1 Cuerpo Académico en Ciencia Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de Tamaulipas, Ciudad Victoria, Tamaulipas, CP 87274, Mexico. Electronic address: sandra.mendez@uat.edu.mx.
  • 2 División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, CP 86150, Mexico.
  • 3 Independent consultant, Benito Juárez, Ciudad de México, CP 03610, Mexico.
  • 4 Departamento de Fisiología, Biofísica y Neurociencias, CINVESTAV-IPN, Ciudad de México, CP 07360, Mexico.
  • PMID: 36349607
  • DOI: 10.1016/j.ygcen.2022.114150

Abstract

Among all the regulatory homeostatic networks in vertebrates, the activation of the hypothalamic-pituitaryadrenal axis during the stress response, has gained considerable attention, and the measurement of fecal glucocorticoids (FGC) has become an invaluable tool to assess adrenocortical activity related to stressful events in wild and captive animals. However, the use of FGC requires the validation of measurement techniques and the proper selection of the specific hormone according to the study species. The main objective of this study was to identify the dominant glucocorticoid (GC) hormone in the stress response of black-tailed prairie dogs (Cynomys ludovicianus) in an arid grassland of Chihuahua, Mexico. A capture stress challenge in the field was developed to determine if the levels of glucocorticoids (cortisol and corticosterone) both in serum and fecal samples could be attributed to stress in Cynomys ludovicianus. The samples were analysed with the technique of liquid phase radioimmunoassay , and this study showed that both cortisol and corticosterone are present at measurable levels in serum and fecal samples of black-tailed prairie dogs. We found that both GCs were present in similar concentrations in serum, however, corticosterone concentration in fecal samples was higher than cortisol. Likewise, biochemical validations performed in this study to test the assay reached acceptable levels of reliability. Therefore, we confirm that fecal analysis can be implemented as a method to measure stress responses in wild prairie dogs.

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