Intraspecific Adaptation Load: A Mechanism for Species Coexistence.
Intraspecific Adaptation Load: A Mechanism for Species Coexistence.
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DOI：
10.1016/j.tree.2020.05.011
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发表时间：
2020-07
影响因子：
16.8
通讯作者：
M. Yamamichi;D. Kyogoku;Ryosuke Iritani;K. Kobayashi;Yuma Takahashi;Kaori Tsurui-Sato;A. Yamawo;S. Dobata;K. Tsuji;M. Kondoh
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文献类型：
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作者：
M. Yamamichi;D. Kyogoku;Ryosuke Iritani;K. Kobayashi;Yuma Takahashi;Kaori Tsurui-Sato;A. Yamawo;S. Dobata;K. Tsuji;M. Kondoh
进化生态理论表明，由同种相互作用产生的选择，例如性选择和亲缘选择，可能会导致种内冲突的进化和进化的“公地悲剧”。在这里，我们提出，这种同种冲突的演变可能会以增强物种共存的方式影响种群动态。经验证据和理论模型表明，更丰富的物种更容易受到“自私”个体的入侵，这些个体以牺牲种群增长（种内适应负荷）为代价来提高自身的繁殖成功率。密度依赖性的种内适应负荷在种群水平上产生了自我调节机制，并通过负频率依赖性稳定了群落水平上的物种共存。
Evolutionary ecological theory suggests that selection arising from interactions with conspecifics, such as sexual and kin selection, may result in evolution of intraspecific conflicts and evolutionary ‘tragedy of the commons'. Here, we propose that such an evolution of conspecific conflicts may affect population dynamics in a way that enhances species coexistence. Empirical evidence and theoretical models suggest that more abundant species is more susceptible to invasion of ‘selfish' individuals that increase their own reproductive success at the expense of population growth (intraspecific adaptation load). The density-dependent intraspecific adaptation load gives rise to a self-regulation mechanism at the population level, and stabilizes species coexistence at the community level by negative frequency-dependence.