期刊
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
卷 64, 期 10, 页码 1527-1535出版社
SPRINGER
DOI: 10.1007/s00265-010-0966-4
关键词
Aphelocoma coerulescens; Senescence; Parental care; Cost of reproduction
资金
- Archbold Biological Station
- National Science Foundation [IBN-034632, IBN-0508418, IOS-0909620]
- Sigma Xi
- American Ornithologists' Union
- Florida Ornithological Society
- College of Arts and Sciences at the University of Memphis
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [0919899] Funding Source: National Science Foundation
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [0909620] Funding Source: National Science Foundation
In species that undergo actuarial senescence, the value of current reproduction is predicted to increase relative to the value of future reproduction with age, as the probability of survival to another reproductive event is reduced. Therefore, life history theory predicts that aging animals should increase their investment in reproduction. However, an increase in reproductive investment may carry significant costs to the breeding individuals. We recorded provisioning rates of Florida scrub-jay male breeders, followed by their immediate capture to assess body condition and collect blood for an in vitro test of immunocompetence and an assay of baseline corticosterone for a measure of stress. Older males provisioned offspring and brooding mates at the highest rates. There was no evidence of any physiological deficits in males with high provisioning rates, independent of age. It appears that birds that survive to old age are high quality birds that maintain good physiological condition, which complements the value of experience and permits maximal investment in offspring.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据