Human-induced morphological shifts in an island lizard.
Human-induced morphological shifts in an island lizard.
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DOI：
10.1111/j.1752-4571.2010.00170.x
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发表时间：
2011-03
影响因子：
4.1
通讯作者：
Smith TB
中科院分区：
文献类型：
--
作者：
Marnocha E;Pollinger J;Smith TB
理解人为变化的进化后果是进化生物学中的一个新兴课题。虽然高度敏感的物种可能会因人为的栖息地改变而灭绝，但那些具有更广泛环境耐受性的物种可能会持续存在并适应这些变化。在这里，我们使用棕色变色蜥（Anolis sagrei）的形态学数据来研究人为栖息地改变的影响，棕色变色蜥是一种既生活在自然栖息地又生活在人类干扰栖息地的蜥蜴物种。研究发现，受干扰生境的种群口鼻长度、口鼻后跨和口鼻质量明显大于受干扰生境的种群，表明口鼻后跨的差异与人类活动引起的生境结构变化有关。种群在岛屿间存在遗传差异，但在岛屿生境类型间不存在遗传差异。因此，观察到的岛内形态差异模式不能用单独的创始种群来解释。相反，我们的结果与每个岛屿上出现的栖息地之间的形态差异是一致的。结果强调了人为变化可能对在人类改变的栖息地中持续存在的种群的进化轨迹产生重大影响。
Understanding the evolutionary consequences of anthropogenic change is an emerging topic in evolutionary biology. While highly sensitive species may go extinct in response to anthropogenic habitat alteration, those with broader environmental tolerances may persist and adapt to the changes. Here, we use morphological data from the brown anole (Anolis sagrei), a lizard species that lives in both natural and human-disturbed habitats, to examine the impact of anthropogenic habitat alteration. We find populations inhabiting disturbed habitats were significantly larger in snout-vent length, hindspan, and mass and provide evidence that the observed divergence in hindspan is driven by human-induced changes in habitat structure. Populations were found to be genetically distinct among islands but are not genetically differentiated between habitat types on islands. Thus, the observed pattern of intra-island morphological differences cannot be explained by separate founding populations. Rather, our results are consistent with morphological differences between habitats having arisen in situ on each island. Results underscore the significant impact anthropogenic change may have on evolutionary trajectories of populations that persist in human-altered habitats.
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影响因子：
3.3
作者：
Hedrick, PW
通讯作者：
Hedrick, PW
DOI：
10.1111/j.1095-8312.2007.00700.x
发表时间：
2007-02-01
影响因子：
1.9
作者：
Calsbeek, Ryan;Smith, Thomas B.;Bardeleben, Carolyne
通讯作者：
Bardeleben, Carolyne
影响因子：
4.8
作者：
KLEIN, BC
通讯作者：
KLEIN, BC
影响因子：
3.3
作者：
CARROLL, SP;BOYD, C
通讯作者：
BOYD, C
影响因子：
2
作者：
Laeser, SR;Baxter, CV;Fausch, KD
通讯作者：
Fausch, KD