Historical contingency in the evolution of primate color vision
Historical contingency in the evolution of primate color vision
复制标题
DOI：
10.1016/s0047-2484(02)00167-7
复制
发表时间：
2003-01-01
影响因子：
3.2
通讯作者：
Li, WH
中科院分区：
文献类型：
--
作者：
Dominy, NJ;Svenning, JC;Li, WH
灵长类动物在真兽类哺乳动物中是独一无二的，因为它们拥有三种类型的视网膜锥体。奇怪的是，卡他碱、阔鼻碱和链球菌在不同程度上具有这种解剖结构，而且迄今为止还没有假说解释这种变异性。在这里，我们提出无花果和树状棕榈树的历史生物地理学解释了灵长类动物色觉的全球变化。具体来说，我们认为灵长类动物入侵了以无花果和棕榈树为特征的古近纪森林，它们的果实发挥了重要作用。灵长类动物不仅依赖这些资源，而且还提供了高质量的种子传播。反过来，无花果和棕榈树失去了或根本没有进化出明显的颜色，因为这几乎没有吸引哺乳动物的优势。我们认为，无花果和棕榈树的丰富度和颜色为具有混合颜色区分能力的觅食群体提供了选择性优势。始新世末期和新近纪的气候变冷导致棕榈树和（可能是）无花果的大范围区域性灭绝或大量减少。在无花果和棕榈树变得稀缺的地区，我们建议灵长类动物进化出常规的三色视觉，以便利用蛋白质幼叶作为替代资源。对现存无花果和棕榈树的色调和生物地理学的调查提供了一些经验支持。在这些资源稀缺的地方，灵长类动物通常是三色的，并在水果缺乏的季节性时期吃掉嫩叶。这些结果意味着灵长类动物色觉的差异进化与始新世-渐新世过渡期间的气候变化之间存在联系。 (C) 2003 Elsevier Science Ltd. 保留所有权利。
Primates are unique among eutherian mammals for possessing three types of retinal cone. Curiously, catarrhines, platyrrhines, and strepsirhines share this anatomy to different extents, and no hypothesis has hitherto accounted for this variability. Here we propose that the historical biogeography of figs and arborescent palms accounts for the global variation in primate color vision. Specifically, we suggest that primates invaded Paleogene forests characterized by figs and palms, the fruits of which played a keystone function. Primates not only relied on such resources, but also provided high-quality seed dispersal. In turn, figs and palms lost or simply did not evolve conspicuous coloration, as this conferred little advantage for attracting mammals. We suggest that the abundance and coloration of figs and palms offered a selective advantage to foraging groups with mixed capabilities for chromatic distinction. Climatic cooling at the end of the Eocene and into the Neogene resulted in widespread regional extinction or decimation of palms and (probably) figs. In regions where figs and palms became scarce, we suggest primates evolved routine trichromatic vision in order to exploit proteinaceous young leaves as a replacement resource. A survey of the hue and biogeography of extant figs and palms provides some empirical support. Where these resources are infrequent, primates are routinely trichromatic and consume young leaves during seasonal periods of fruit dearth. These results imply a link between the differential evolution of primate color vision and climatic changes during the Eocene-Oligocene transition. (C) 2003 Elsevier Science Ltd. All rights reserved.