Candidate gene polymorphisms for behavioural adaptations during urbanization in blackbirds.
Candidate gene polymorphisms for behavioural adaptations during urbanization in blackbirds.
复制标题
黑鸟城市化过程中行为适应的候选基因多态性。
DOI：
10.1111/mec.12288
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发表时间：
2013
影响因子：
4.9
通讯作者：
Mueller JC
中科院分区：
文献类型：
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作者：
Mueller JC
以前的农村物种成功的城市殖民地化是研究适应新环境的理想情况。我们解决这个问题，使用候选基因的行为特征，预计将发挥作用，在这样的殖民活动。我们确定了16个基因多态性的候选基因的昼夜节律，避免伤害和迁移和探索行为在12对城市和农村人口的黑鸟Turdus merula横跨西古北。一个外显子的微卫星在theSERT基因，一个候选基因的伤害回避行为，表现出高度显着的关联与栖息地类型在所有人群中进行的分析。在这个位点的遗传分歧是一致的12个人口对中的10个，这与以前报道的随机标记这些人口之间的随机遗传分歧。我们的研究结果表明，在大多数黑鸟城市化事件中，与避免伤害和与thesert多态性相关的行为特征经历选择压力。因此，这些事件似乎是受同质的适应过程，除了以前报道的人口创始人事件。
Successful urban colonization by formerly rural species represents an ideal situation in which to study adaptation to novel environments. We address this issue using candidate genes for behavioural traits that are expected to play a role in such colonization events. We identified and genotyped 16 polymorphisms in candidate genes for circadian rhythms, harm avoidance and migratory and exploratory behaviour in 12 paired urban and rural populations of the blackbirdTurdus merulaacross the Western Palaearctic. An exonic microsatellite in theSERTgene, a candidate gene for harm avoidance behaviour, exhibited a highly significant association with habitat type in an analysis conducted across all populations. Genetic divergence at this locus was consistent in 10 of the 12 population pairs; this contrasts with previously reported stochastic genetic divergence between these populations at random markers. Our results indicate that behavioural traits related to harm avoidance and associated with theSERTpolymorphism experience selection pressures during most blackbird urbanization events. These events thus appear to be influenced by homogeneous adaptive processes in addition to previously reported demographic founder events.