| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10300697 | Hormones and Behavior | 2011 | 7 Pages |
Abstract
⺠Per capita direct fitness decreases with group size (sociality) in the communally rearing Octodon degus. ⺠Baseline cortisol levels increased with direct fitness estimates, but not so with group size. ⺠Glucocorticoid hormone levels were more responsive to reproductive challenge than to the costs of group living. ⺠Our study that focused on group living supported reproductive effort is a major determinant of cort-fitness covariation.
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Authors
Luis A. Ebensperger, Juan RamÃrez-Estrada, Cecilia León, Rodrigo A. Castro, Liliana Ortiz Tolhuysen, Raúl Sobrero, Verónica Quirici, Joseph Robert Burger, Mauricio Soto-Gamboa, Loren D. Hayes,