‘Out‐of‐Africa’ dispersal of tropical floras during the Miocene climatic optimum: evidence from Uvaria (Annonaceae)
‘Out‐of‐Africa’ dispersal of tropical floras during the Miocene climatic optimum: evidence from Uvaria (Annonaceae)
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DOI：
10.1111/j.1365-2699.2011.02598.x
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发表时间：
2012-02
影响因子：
3.9
通讯作者：
Linling Zhou;Yvonne C. F. Su;D. Thomas;R. Saunders
中科院分区：
文献类型：
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作者：
Linling Zhou;Yvonne C. F. Su;D. Thomas;R. Saunders
目的亚非分离在古热带类群中很常见，通常参照三个相互竞争的假说来解释：(1)印度构造板块上的漂流，使非洲向亚洲扩散；(2)通过始新世热带森林迁徙；(3)跨大洋远距离扩散。这些假说是用分布在非洲、亚洲和澳大拉西亚热带地区的无花果(番荔枝科)来检验的。最近对该属的系统发育重建表明，该属与地理来源有明显的相关性，表明该属可能起源于非洲，随后扩散到亚洲，然后扩散到澳大拉西亚。祖先地区和迁徙路线被推断出来，并与对分歧时间的估计进行比较，以便区分流行的扩散假说。
Aim African–Asian disjunctions are common in palaeotropical taxa, and are typically explained by reference to three competing hypotheses: (1) ‘rafting’ on the Indian tectonic plate, enabling Africa‐to‐Asia dispersal; (2) migration via Eocene boreotropical forests; and (3) transoceanic long‐distance dispersal. These hypotheses are tested using Uvaria (Annonaceae), which is distributed in tropical regions of Africa, Asia and Australasia. Recent phylogenetic reconstructions of the genus show a clear correlation with geographical provenance, indicating a probable origin in Africa and subsequent dispersal to Asia and then Australasia. Ancestral areas and migration routes are inferred and compared with estimates of divergence times in order to distinguish between the prevailing dispersal hypotheses.