Phylogeography of ants from the Brazilian Atlantic Forest

Ströher, Patrícia R.; Meyer, Andreas L. S.; Zarza, Eugenia; Tsai, Whitney L. E.; McCormack, John E.; Pie, Márcio R.

doi:10.1007/s13127-019-00409-z

Cited by 17 publications

(11 citation statements)

References 81 publications

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Section: Discussionsupporting

confidence: 90%

“…Our results confirm that UCEs can provide sufficient variation at shallow timescales in insects to enable species discrimination, adding to previous evidence (Derkarabetian et al, 2019;Harvey et al, 2016;Ješovnik et al, 2017;Ströher et al, 2019;Zarza et al, 2018). Harvey et al (2016) comprehensively compared the utility of sequence capture methods, specifically using UCEs as in our study, and RAD-seq for shallow phylogenies.…”

Section: Concluding Remarks On the Use Of Uces For Species Delimitasupporting

confidence: 85%

“…UCEs appear to fulfil many of the above‐mentioned requirements for nuclear markers (Smith et al., 2014; Zhang et al., 2019). They have been used successfully to address different evolutionary questions spanning deep and shallow divergences, including population‐level studies, both in vertebrates (Harvey et al., 2016; Vinciguerra et al., 2019; Winker et al., 2018; Zarza et al., 2018) and in arthropods (Derkarabetian et al., 2019; Ješovnik et al., 2017; Ströher et al., 2019). These studies convincingly suggest that UCEs can be used for reconstructing shallow divergences, similarly to anchored hybrid enrichment techniques (Lemmon et al., 2012).…”

Section: Introductionmentioning

confidence: 99%

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Ultraconserved yet informative for species delimitation: Ultraconserved elements resolve long‐standing systematic enigma in Central European bees

2020

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Accurate and testable species hypotheses are essential for measuring, surveying and managing biodiversity. Taxonomists often rely on mitochondrial DNA barcoding to complement morphological species delimitations. Although COI-barcoding has largely proven successful in assisting identifications for most animal taxa, there are nevertheless numerous cases where mitochondrial barcodes do not reflect species hypotheses. For instance, what is regarded as a single species can be associated with two distinct DNA barcodes, which can point either to cryptic diversity or to withinspecies mitochondrial divergences without reproductive isolation. In contrast, two or more species can share barcodes, for instance due to mitochondrial introgression. These intrinsic limitations of DNA barcoding are commonly addressed with nuclear genomic markers, which are expensive, may have low repeatability and often require high-quality DNA. To overcome these limitations, we examined the use of ultraconserved elements (UCEs) as a quick and robust genomic approach to address such problematic cases of species delimitation in bees. This genomic method was assessed using six different species complexes suspected to harbour cryptic diversity, mitochondrial introgression or mitochondrial paraphyly. The sequencing of UCEs recovered between 686 and 1,860 homologous nuclear loci and provided explicit species delimitation in all investigated species complexes. These results provide strong evidence for the suitability of UCEs as a fast method for species delimitation even in recently diverged lineages. Furthermore, we provide the first evidence for both mitochondrial introgression among distinct bee species, and mitochondrial paraphyly within a single bee species.

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Section: Discussionsupporting

confidence: 90%

Section: Concluding Remarks On the Use Of Uces For Species Delimitasupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Ultraconserved yet informative for species delimitation: Ultraconserved elements resolve long‐standing systematic enigma in Central European bees

2020

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Section: Limited Dispersal and Divergent Niches Across The Climaticmentioning

confidence: 53%

“…Nevertheless, our results contribute to a better understanding of how and why this major genetic discontinuity exists across tropical forests. Interestingly, similar north–south phylogeographic breaks are also known from the Atlantic rainforests of Brazil, thought to be due to differing climatic regimes and floral compositions (Carnaval et al., 2014; Leite et al., 2016; Ströher et al., 2019) and the Australian wet tropics (Moreau, Hugall, McDonald, Jamieson, & Moritz, 2015). This suggests that similar processes might be driving patterns of intraspecific diversity in different TRF regions.…”

Section: Discussionmentioning

confidence: 67%

Phylogenomic approaches reveal how climate shapes patterns of genetic diversity in an African rain forest tree species

et al. 2020

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The world's second largest expanse of tropical rainforest is in Central Africa, and it harbours enormous species diversity. Population genetic studies have consistently revealed significant structure across Central African rainforest plants. In particular, previous studies have repeatedly demonstrated a north–south genetic discontinuity around the equatorial line, in a continuous expanse of rainforest where a climatic inversion is documented. Here, we took a phylogeographic approach by sequencing 351 nuclear markers in 112 individuals across the distribution of the African rainforest tree species Annickia affinis (Annonaceae). We showed for the first time that the north–south divide is the result of a single, major colonization event across the climatic inversion from an ancestral population located in Gabon. We suggested that differences in ecological niche of populations located on either side of this inversion may have contributed to this phylogenetic discontinuity. We found evidence for inland dispersal, predominantly in northern areas, and variable demographic histories among genetic clusters, indicating that populations responded differently to past climate change. We show how newly developed genomic tools can provide invaluable insights into our understanding of tropical rainforest evolutionary dynamics.

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