Saino, Nicola; Incagli, Michele; Martinelli, Roberta; … - In: Behavioral Ecology 13 (2002) 2, pp. 169-174
Life-history theory posits trade-offs between fitness components. Reproduction negatively affects physiology and immune system functioning, and the effect of this form of stress may be mediated by glucocorticosteroids. We manipulated brood size of barn swallows (Hirundo rustica) to study the...