Interactive effects of parental age on offspring fitness and age-assortative mating in a wild bird.

ABSTRACT: Variation in parental age can have important consequences for offspring fitness and the structure of populations and disease transmission. However, our understanding of the effects of parental age on offspring in natural populations is limited. Here, we investigate consequences of parental age for offspring fitness and test for age-assortative mating in a short-lived bird, the house wren (Troglodytes aedon). Offspring immunoresponsiveness increased with maternal age and decreased with paternal age, but the strength of these effects varied with the age of one's mate. Offspring immunoresponsiveness was augmented most with older mothers and younger fathers. Thus, we expected this combination of ages to yield the highest offspring fitness. However, offspring recruitment, longevity, and

SUBMITTER: Bowers EK 

PROVIDER: S-EPMC5714303 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature