Environmental fluctuations dampen the effects of clonal reproduction on evolutionary rescue
Environmental fluctuations dampen the effects of clonal reproduction on evolutionary rescue
复制标题
环境波动削弱了克隆繁殖对进化救援的影响
DOI：
10.1111/jeb.13778
复制
发表时间：
2021
影响因子：
2.1
通讯作者：
Orive, Maria E.
中科院分区：
文献类型：
--
作者：
Peniston, James H.;Barfield, Michael;Holt, Robert D.;Orive, Maria E.
进化拯救发生在基因变化允许种群持续应对环境变化时，否则会导致灭绝。大多数关于进化拯救的研究假设物种要么完全克隆繁殖，要么完全有性繁殖;然而，许多物种有部分克隆繁殖策略，它们既克隆又有性繁殖。此外，少数评估部分克隆繁殖的进化拯救研究没有考虑环境的波动，这在自然界中几乎无处不在。在这里，我们使用基于个体的模拟来研究环境波动（不相关或正自相关）如何影响克隆性对进化拯救的影响。我们发现，对于中等程度的环境波动，在没有波动的情况下，增加克隆性的程度增加了人口持续性的概率，以应对突然的环境变化，但持续性下降，以应对连续的，定向的环境变化。然而，随着大幅度的波动，阶跃变化后的克隆性的好处和克隆性的不利影响，以下一个连续的，方向性的变化通常会减少;事实上，在后一种情况下，增加克隆性甚至可以成为有益的，如果环境波动是自相关的。我们还表明，代际重叠的增加抑制了环境波动的影响。总体而言，我们表明，了解部分克隆生物的进化拯救不仅需要物种的生活史和环境变化的类型的知识，但也了解环境波动的幅度和自相关性。AbstractEnvironmental variation modulates the effects of clonality on evolutionary rescue.克隆繁殖的增加有助于适应环境的突然变化。然而，随着环境变化幅度的增加，克隆性增加的好处受到抑制。
Evolutionary rescue occurs when genetic change allows a population to persist in response to an environmental change that would otherwise have led to extinction. Most studies of evolutionary rescue assume that species have either fully clonal or fully sexual reproduction; however, many species have partially clonal reproductive strategies in which they reproduce both clonally and sexually. Furthermore, the few evolutionary rescue studies that have evaluated partially clonal reproduction did not consider fluctuations in the environment, which are nearly ubiquitous in nature. Here, we use individual‐based simulations to investigate how environmental fluctuations (either uncorrelated or positively autocorrelated) influence the effect of clonality on evolutionary rescue. We show that, for moderate magnitudes of environmental fluctuations, as was found in the absence of fluctuations, increasing the degree of clonality increases the probability of population persistence in response to an abrupt environmental change, but decreases persistence in response to a continuous, directional environmental change. However, with large magnitudes of fluctuations, both the benefits of clonality following a step change and the detrimental effects of clonality following a continuous, directional change are generally reduced; in fact, in the latter scenario, increasing clonality can even become beneficial if environmental fluctuations are autocorrelated. We also show that increased generational overlap dampens the effects of environmental fluctuations. Overall, we demonstrate that understanding the evolutionary rescue of partially clonal organisms requires not only knowledge of the species life history and the type of environmental change, but also an understanding of the magnitude and autocorrelation of environmental fluctuations.AbstractEnvironmental variation modulates the effects of clonality on evolutionary rescue. Increased clonal reproduction facilitates adaptation to an abrupt environmental change. However, the benefits of increased clonality are dampened with increased magnitudes of environmental variation.
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影响因子：
4.1
作者：
Eizaguirre C;Baltazar-Soares M
通讯作者：
Baltazar-Soares M
DOI：
10.1098/rspb.2002.2219
发表时间：
2003-01-22
影响因子：
4.7
作者：
Holt, RD;Gomulkiewicz, R;Barfield, M
通讯作者：
Barfield, M
环境波动可以促进高灭绝风险情景中的进化救援
DOI：
--
发表时间：
2020
期刊：
Proceedings of the Royal Society B
影响因子：
--
作者：
James H. Peniston;M. Barfield;Andrew Gonzalez;R. Holt
通讯作者：
R. Holt
影响因子：
3.8
作者：
Groot, TVM;Bruins, E;Breeuwer, JAJ
通讯作者：
Breeuwer, JAJ
DOI：
--
发表时间：
2004
期刊：
影响因子：
--
作者：
R. Ferrière;U. Dieckmann;D. Couvet
通讯作者：
D. Couvet