The causes and consequences of inbreeding avoidance and tolerance in cooperatively breeding vertebrates
The causes and consequences of inbreeding avoidance and tolerance in cooperatively breeding vertebrates
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脊椎动物合作繁殖中近交避免和容忍的原因和后果
DOI：
10.1111/jzo.12466
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发表时间：
2017
影响因子：
2
通讯作者：
H. Nichols
中科院分区：
文献类型：
--
作者：
H. Nichols
合作繁殖者为研究近亲繁殖提供了一个特别有趣的场景。由于传播延迟和传播距离短，这些种群具有粘性，导致当地种群中亲属的积累。这导致近亲繁殖的高风险，从而导致近亲繁殖的萧条。这推动了一系列近亲繁殖避免机制的进化，导致大多数合作育种者的近亲繁殖水平相对较低。然而，也有一些物种近亲繁殖相对频繁。有规律的近亲繁殖（在近亲繁殖不是最近种群数量下降的情况下）的存在表明，在某些情况下，对近亲繁殖的容忍甚至偏好可以进化。近交和近交回避机制都对合作繁殖物种的下游适应度产生巨大影响。例如，它们可以影响生殖动态，导致优势个体垄断繁殖机会。近亲繁殖及其避免也可能通过影响潜在合作者之间的亲缘关系水平来影响合作繁殖本身的进化。最后，在一些合作繁殖者中，高度的近亲繁殖避免可能对种群生存能力有害，因此是保护主义者特别关注的问题。在这篇综述中，我详细讨论了这些问题，并简要介绍了自然种群近亲繁殖研究方法的最新进展。
Cooperative breeders provide a particularly interesting scenario for studying inbreeding. Such populations are viscous due to delayed dispersal and short dispersal distances, resulting in the build-up of relatives in the local population. This leads to a high risk of inbreeding, and consequently of inbreeding depression. This has driven the evolution of an array of inbreeding avoidance mechanisms resulting in a relatively low level of close inbreeding in the majority of cooperative breeders. However, there are a number of species where inbreeding occurs relatively frequently. The presence of regular inbreeding (in cases where inbreeding is not a result of recent population declines), suggests that inbreeding tolerance and even preference can evolve under some circumstances. Both inbreeding and inbreeding avoidance mechanisms have enormous downstream fitness consequences for cooperative breeding species. For example, they can influence reproductive dynamics leading to a monopolisation of breeding opportunities by dominant individuals. Inbreeding and its avoidance are also likely to impact on the evolution of cooperative breeding itself through influencing levels of relatedness between potential cooperators. Finally, in some cooperative breeders, a high degree of inbreeding avoidance can be detrimental to population viability, and hence is of particular concern to conservationists. In this review, I discuss these issues in detail and also briefly consider recent advances in the methods available for the study of inbreeding in natural populations.
DOI：
10.1073/pnas.87.7.2496
发表时间：
1990-04
影响因子：
11.1
作者：
H. Reeve;D. Westneat;W. Noon;P. Sherman;C. Aquadro
通讯作者：
H. Reeve;D. Westneat;W. Noon;P. Sherman;C. Aquadro
DOI：
10.1073/pnas.060284797
发表时间：
2000-03-28
影响因子：
11.1
作者：
Meagher, S;Penn, DJ;Potts, WK
通讯作者：
Potts, WK