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首页> 外文期刊>Taxon >Timing the origin and past connections between Andean and Atlantic Seasonally Dry Tropical Forests in South America: Insights from the biogeographical history of Amorimia (Malpighiaceae)
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Timing the origin and past connections between Andean and Atlantic Seasonally Dry Tropical Forests in South America: Insights from the biogeographical history of Amorimia (Malpighiaceae)

机译：安西亚和大西洋季节性干燥热带森林在南美洲的起源和过去的联系：来自阿莫里亚的生物地理史（Malpighiaceae）的见解

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摘要

We investigated the timing of origin and past connections between Andean and Atlantic Seasonally Dry Tropical Forests in South America based on the biogeographical history of Amorimia, a genus of Malpighiaceae restricted to South America. We used a time-calibrated phylogenetic tree based on three cpDNA (ndhF, rpl16, trnQ-rps16) and two nrDNA (ETS, ITS) regions including all currently accepted species in Amorimia for ancestral area reconstructions. Our results show that: (1) the ancestor of Amorimia originated in Atlantic dry forests around 22 Ma; (2) ancestors of both Amorimia subgenera arose in southern Brazilian dry forests from 18 to 14 Ma; (3) the remaining lineages in the genera diversified from mid-Miocene to the late-Pliocene; and (4) a history of two expansion events during early and middle Miocene, besides several colonization events in different nuclei of dry forests in South America is suggested.
机译：我们在南美洲的生物地理历史上调查了Andean和大西洋季节性干燥热带森林的起源和过去的联系的时期，该历史在南美洲的Malpighiageae的一群人的生物地理史。 我们使用基于三个CPDNA（NDHF，RPL16，TRNQ-RPS16）和两种NRDNA（ETS，ITS）区域的时间校准的系统发育树，包括祖先区域重建的所有目前接受的物种。 我们的研究结果表明：（1）祖美洲的祖先起源于大西洋干燥森林，约22 mA; （2）南部巴西干旱森林南部的祖先，18至14 mA; （3）剩余的血统在中间内部多样化到后期内外; （4）提出了早期和中间内部两种扩展事件的历史，除了南美洲干旱森林的几种定殖事件之外。

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