Data from: Actuarial senescence in a dimorphic bird: different rates of aging in morphs with discrete reproductive strategies

Melissa L. Grunst, Andrea S. Grunst, Vincent Formica, Marisa L. Korody, Adam M. Betuel, Margarida Barcelo-Serra, Rusty A. Gonser, Elaina M. Tuttle & Vincent A. Formica
It is often hypothesized that intra-sexual competition accelerates actuarial senescence, or the increase in mortality rates with age. However, an alternative hypothesis is that parental investment is more important to determining senescence rates. We used a unique model system, the white-throated sparrow (Zonotrichia albicollis), to study variation in actuarial senescence. In this species, genetically-determined morphs display discrete mating strategies and disassortative pairing, providing an excellent opportunity to test the predictions of the above hypotheses. Compared...
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