Ageing in house sparrows is insensitive to environmental effects
Ageing in house sparrows is insensitive to environmental effects
复制标题
麻雀的衰老对环境影响不敏感
DOI:
10.1101/598284
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Simons M
中科院分区:
文献类型:
--
作者:
Simons M
Variation in individual life histories, and physiology, determines the rates at which new life is generated (reproduction) and lost (death) in a population. Studying the demography of deaths thus reveals fundamental aspects of the biology of individuals within a population. We studied mortality senescence – the increase in mortality rate with age – in wild and captive house sparrows (Passer domesticus), and demonstrate highly similar mortality senescence in both, but markedly lower vulnerability to death (frailty) in captivity. This suggests that house sparrows have a species-specific rate of ageing that is insensitive to environmental effects. Unexpectedly, juvenile and adult mortality co-varied positively across years in the wild, indicating that mortality is not strongly density-dependent. Mortality also varied widely among years, suggesting a strong environmental effect, and we explain the observed patterns using temperature data and predation by birds of prey. We discuss how stochastic environmental effects can affect the evolution of ageing.
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影响因子:
3.3
作者:
Promislow,DE;Tatar,M;Khazaeli,AA;Curtsinger,JW
通讯作者:
Curtsinger,JW
DOI:
10.1101/219477
发表时间:
2017
期刊:
--
影响因子:
--
作者:
Girndt A
通讯作者:
Girndt A
影响因子:
2.1
作者:
J. Schroeder;T. Burke;M. Mannarelli;D. Dawson;S Nakagawa
通讯作者:
S Nakagawa
影响因子:
2.1
作者:
Winney,I. S.;Schroeder,J.;Burke,T.
通讯作者:
Burke,T.
影响因子:
6.6
作者:
Colchero, Fernando;Jones, Owen R.;Rebke, Maren
通讯作者:
Rebke, Maren