Temporal and spatial diversification along the Amazonia-Cerrado transition in Neotropical treefrogs of the Boana albopunctata species group
Temporal and spatial diversification along the Amazonia-Cerrado transition in Neotropical treefrogs of the Boana albopunctata species group
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亚马逊-塞拉多过渡区新热带树蛙 Boana albopunctata 物种组的时空多样性
DOI：
10.1016/j.ympev.2022.107579
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发表时间：
2022
影响因子：
4.1
通讯作者：
Prado, Cynthia P.A.
中科院分区：
文献类型：
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作者：
Mittan, Cinnamon S.;Zamudio, Kelly R.;Thomé, M. Tereza;Camurugi, Felipe;Colli, Guarino R.;Garda, Adrian A.;Haddad, Célio F.B.;Prado, Cynthia P.A.
尽管对新热带森林的生物多样性进行了广泛的研究，但直到最近，南美洲季节性干燥、开放的生物群落的生物多样性一直被低估。我们利用一个广泛分布的群体，Boana albopunctata，揭示了神秘的谱系，并研究了新热带无脊椎动物多样化的时间，重点是干燥的对角生物群落（塞拉多，Caatinga和Chaco）以及亚马逊和塞拉多之间的过渡带。我们推断了b的多位点系统发育。包括18个已描述物种中的15个在内的白纹布孔塔物种群，恢复了两个隐种，并重建了分布在多个南美生物群落的物种多样化的时间。一个新的潜在物种（B.aff）。steinbachi)，在亚马逊的阿克州取样，聚集在b。钙筋膜种复合体，接近于b。steinbachi。在亚马逊-塞拉多交带取样的另一推测新种（B. aff.multifasciata）与B. aff.multifasciata关系密切。multifasciata。最后，我们将最近发现的Cerrado谱系（B.aff.albopuncata）放入b。白纹目动物首次类群系统发育。我们的祖先范围重建表明，b。白骨猿群可能从亚马逊-塞拉多分散到干对角线森林和大西洋森林。种内人口统计学结果表明，ranicepsandB。白头鲸，在干燥的对角线上迅速扩张的标志。同样，对于b的一个分支。我们的分析支持塞拉多从亚马逊入侵，然后迅速扩展到开放的对角生物群系。因此，我们的研究恢复了巴西北部亚马逊-塞拉多交错带最近的几个分歧。晚中新世的构造隆升和侵蚀以及更新世的气候振荡与干对角线和亚马逊-塞拉多交错带的估计辐散时间一致。我们的研究强调了这些受威胁的开放地层在新热带生物多样性产生中的重要性。
Despite extensive research on biodiversity in Neotropical forests, biodiversity in seasonally dry, open biomes in South America has been underestimated until recently. We leverage a widespread group,Boana albopunctata, to uncover cryptic lineages and investigate the timing of diversification in Neotropical anurans with a focus on dry diagonal biomes (Cerrado, Caatinga and Chaco) and the ecotone between Amazonia and the Cerrado. We inferred a multilocus phylogeny of theB. albopunctataspecies group that includes 15 of 18 described species, recovered two cryptic species, and reconstructed the timing of diversification among species distributed across multiple South American biomes. One new potential species (B.aff.steinbachi), sampled in the Amazonian state of Acre, clustered within theB. calcara-fasciataspecies complex and is close toB. steinbachi. A second putative new species (B. aff.multifasciata), sampled in the Amazonia-Cerrado ecotone, is closely related toB. multifasciata. Lastly, we place a recently identified Cerrado lineage (B.aff.albopuncata) into theB. albopunctataspecies group phylogeny for the first time. Our ancestral range reconstruction showed that species in theB. albopuctatagroup likely dispersed from Amazonia-Cerrado into the dry-diagonal and Atlantic Forest. Intraspecies demography showed, for bothB. ranicepsandB. albopunctata, signs of rapid expansion across the dry diagonal. Similarly, for one clade ofB. multifasciata, our analyses support an invasion of the Cerrado from Amazonia, followed by a rapid expansion across the open diagonal biomes. Thus, our study recovers several recent divergences along the Amazonia-Cerrado ecotone in northern Brazil. Tectonic uplift and erosion in the late Miocene and climate oscillations in the Pleistocene corresponded with estimated divergence times in the dry diagonal and Amazonia-Cerrado ecotone. Our study highlights the importance of these threatened open formations in the generation of biodiversity in the Neotropics.