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| Format: | Artículo científico |
| Language: | en |
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Universidad de San Buenaventura
2016
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| Online Access: | https://www.redalyc.org/articulo.oa?id=299046895003 |
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Table of Contents:
- Variation in glucocorticoid levels: survival and reproductive demands in wild black capuchins (Sapajus nigritus) Caio M. Moreira Lucas Peternelli dos Santos Maria Bernardete C. de Sousa Patrícia Izar Psicología Sapajus development capuchin monkey tropical forest Fecal glucocorticoids According to the concept of allostasis and its association with energy mobilization, glucocorticoids (GCs) should parallel cumulative energy expenditure for animal survival and reproduction. Therefore, it is expected that seasonal food shortages might lead to increased levels of GCs. We tested this hypothesis by analyzing the intra-annual variation of fecal glucocorticoid metabolites (GCM) in 14 wild black capuchin monkeys (Sapajus nigritus) living in a social group in the Brazilian Atlantic Forest. We analyzed the association between GCM and social and environmental variables for the three age/sex classes (adult males, adult females and immatures (juveniles and infants). Decreased fruit intake during the dry season increased the GCM levels of both immatures and adult males. Although fruit shortage influenced the allostasis of adult males, the variation in their GCM levels was more impacted by the breeding season. GCM levels of adult females varied during the late stage of pregnancy. These results suggest fruit consumption as the main source of allostatic load for immature animals, while reproductive costs had greater effect on adults. 2016 artículo científico 2011-2084 https://www.redalyc.org/articulo.oa?id=299046895003 en http://www.redalyc.org/revista.oa?id=2990 International Journal of Psychological Research application/pdf Universidad de San Buenaventura International Journal of Psychological Research (Colombia) Vol.9