Historical and current introgression in a Mesoamerican hummingbird species complex: a biogeographic perspective

PeerJ, Journal Year: 2015, Volume and Issue: 4, P. e1556 - e1556

Published: Jan. 12, 2015

The influence of geologic and Pleistocene glacial cycles might result in morphological genetic complex scenarios the biota Mesoamerican region. We tested whether berylline, blue-tailed steely-blue hummingbirds, Amazilia beryllina , cyanura saucerottei show evidence historical or current introgression as their plumage colour variation suggest. also analysed role past present climatic events promoting species diversification. collected mitochondrial DNA (mtDNA) sequence data microsatellite loci scores for populations throughout range three species, well ecological data. Haplotype network, Bayesian phylogenetic divergence time inference, demography, palaeodistribution modelling, niche tests were used to reconstruct evolutionary history this complex. An isolation-with-migration coalescent model assignment analysis assessed determine admixture. mtDNA haplotypes geographically unstructured, with from disparate areas interdispersed on a shallow tree an unresolved haplotype network. Assignment nuclear genome (nuDNA) supported groups signs admixture, corresponding to: (1) A. located west Isthmus Tehuantepec; (2) between Tehuantepec Nicaraguan Depression (Nuclear Central America); (3) southeast Depression. Gene flow estimates, demographic patterns suggest mediated by Quaternary fluctuations. High levels gene indicated asymmetrical isolation-with-migration, whereas analyses found clusters distributions isolation Historical migration genetically distinct estimated using microsatellites higher than contemporary migration. These results support scenario secondary contact during periods strongly imply that high structure currently observed are consequence limited dispersal these hummingbirds across isthmus depression barriers.

Language: Английский

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Molecular and iridescent feather reflectance data reveal recent genetic diversification and phenotypic differentiation in a cloud forest hummingbird

Ecology and Evolution, Journal Year: 2016, Volume and Issue: 6(4), P. 1104 - 1127

Published: Jan. 22, 2016

Abstract The present day distribution and spatial genetic diversity of Mesoamerican biota reflects a long history responses to habitat change. hummingbird Lampornis amethystinus is distributed in northern Mesoamerica, with geographically disjunct populations. Based on sampling across the species range using mitochondrial DNA (mt ) sequences nuclear microsatellites jointly analysed phenotypic climatic data, we (1) test whether fragmented correlated main evolutionary lineages, (2) assess body size plumage color differentiation populations geographic isolation, (3) evaluate set divergence scenarios demographic patterns Analysis variation revealed four groups: blue‐throated (Sierra Madre del Sur); two groups amethyst‐throated (Trans‐Mexican Volcanic Belt Sierra Oriental); east Isthmus Tehuantepec ( IT males showing an amethyst throat. most basal split estimated have originated Pleistocene, 2.39–0.57 million years ago MYA ), corresponded separated by . However, recent time between blue‐ does not correspond 2‐ MY needed be isolation for substantial divergence, likely because structurally iridescent colors are more malleable than others. Results modeling Approximate Bayesian Computation analysis fit model lineage west after Last Glacial Maximum LGM that species’ suitable was during past current conditions. These results challenge generality contraction/expansion glacial cloud forest‐interior urges management forest, highly vulnerable ecosystem climate change currently facing destruction, prevent further loss or extinction.

Language: Английский

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Phylogeography and population differentiation in the Psittacanthus calyculatus (Loranthaceae) mistletoe: a complex scenario of climate–volcanism interaction along the Trans‐Mexican Volcanic Belt

Journal of Biogeography, Journal Year: 2017, Volume and Issue: 44(11), P. 2501 - 2514

Published: July 31, 2017

Abstract Aim The formation of the Trans‐Mexican Volcanic Belt ( TMVB ) played an important role in driving inter‐ and intraspecific diversification at high elevations. However, Pleistocene climate changes ecological factors might also contribute to plant genetic structuring along volcanic belt. Here, we analysed phylogeographical patterns parrot‐mistletoe Psittacanthus calyculatus determine relative contribution these different factors. Location Belt. Methods Using nuclear chloroplast DNA sequence data for 370 individuals, investigate differentiation 35 populations across species range. We conducted phylogenetic, population spatial analyses P. sequences with niche modelling Bayesian inference methods gain insight into variation populations. Results Our revealed structure three groups corresponding individuals from Oaxaca those central‐eastern western regions. A significant signal demographic expansion, east‐to‐west expansion predicted by distribution modelling, approximate computation strongly supported a scenario habitat isolation invasion during late‐Pleistocene. Main conclusions may be explained combined effects (1) geographical linked glacial/interglacial cycles environmental factors, congeners more xeric vegetation (2) east west, suggesting both colonization models.

Language: Английский

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AviList v2025

Published: June 5, 2025

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A phylogenomic perspective on the biogeography of skinks in the Plestiodon brevirostris group inferred from target enrichment of ultraconserved elements

Journal of Biogeography, Journal Year: 2017, Volume and Issue: 44(9), P. 2033 - 2044

Published: April 9, 2017

Abstract Aim The aim of our study was to reconstruct ancestral geographic distributions from time‐calibrated phylogenies generated phylogenomic data answer three broad questions about the biogeography skinks in Plestiodon brevirostris group: (1) Are biogeographic patterns correlated with formation Trans‐Mexican Volcanic Belt? (2) Do different methods phylogenetic estimation result topologies? If so, (3) are reconstructions impacted by use trees? Location Mexico. Methods We used target enrichment ultraconserved elements ( UCE s) obtain sequence 58 representing 11 13 described species group. estimated using concatenated and multispecies coalescent approaches. these distributions. Results final dataset contained 3,282 s each skink. Samples putative formed well‐supported clades trees. Time‐calibrated were generally congruent, but differed placement one basal relationship. Divergences P. group temporally spatially congruent pre‐Pleistocene Belt. most likely colonized Mexican highlands east west during Late Miocene Pliocene. Inferences early history confounded unresolved a key relationship deep phylogeny. Conclusions Skinks represent another example widespread montane taxon long diversification associated primary This mountain range seems have been both cradle for land bridge facilitating dispersal across highlands. Our results highlight probable existence new within complex suggest that querying large portion genome may be critically important studying skinks. However, inferred differences between phylogenies, histories reconstructed caution estimating trees need carefully considered.

Language: Английский

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Genetic structuring and secondary contact in the white‐chested Amazilia hummingbird species complex

Journal of Avian Biology, Journal Year: 2018, Volume and Issue: 49(4)

Published: Feb. 12, 2018

Pleistocene climate cycles have been recognized to be a major driver of postglacial northward range expansion North American bird populations. During glacial maxima, allopatric lineages that were reproductively isolated might come into secondary contact with one another during periods and the genetic signatures past hybridization as result events should produce detectable hybrid zones. The white‐chested hummingbirds Amazilia violiceps A. viridifrons , constitute species complex showing phenotypic similarity across its range. One exception is subspecies found in Central Depression Chiapas ( villadai ), which shares some plumage traits endemic but green‐fronted populations Oaxaca. Phylogenetic relationships, taxonomy limits among controversial for decades. We assessed structure introgression this by analysing 95 individuals at ten nuclear microsatellites morphology. Bayesian analysis yielded four clusters. However, only two clusters generally match previously described mtDNA haplogroups, parental taxon south ) cluster admixed taxa cannot attributed any pure population. High admixture was recorded / range, probably consequence northern . Signs gene flow between low. Historical contemporary migration rates Approximate computations support scenario divergence flow: basal split separating other clades are derived from second or merger due flow.

Language: Английский

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Analysing the assembly of cenocrons in the Mexican transition zone through a time-sliced cladistic biogeographic analysis

Australian Systematic Botany, Journal Year: 2016, Volume and Issue: 29(6), P. 489 - 489

Published: Jan. 1, 2016

A transition zone shows the overlap between two or more regions and represents an event of biotic hybridisation, where different cenocrons assembled as a result historical ecological processes. The Mexican zone, area Nearctic Neotropical overlap, includes following five biogeographical provinces: Sierra Madre Occidental, Oriental, del Sur, Transmexican Volcanic Belt Chiapas Highlands. Within this have already been recognised: Paleoamerican, Plateau, Mountain Mesoamerican, Typical Neotropical. We undertook three cladistic biogeographic analyses on basis 49 cladograms terrestrial taxa, partitioning them into time-slices, namely, Miocene (Mountain Mesoamerican cenocron), Pliocene plus cenocrons) Pleistocene cenocrons). For time-slice, we observed close relationship with region, whereas, for closest was region. conclude that may played role according to cenocron analysed, differs in its delimitation depending taxa strengthening idea it is complex area.

Language: Английский

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Comparative palaeodistribution of eight hummingbird species reveal a link between genetic diversity and Quaternary habitat and climate stability in Mexico

Folia Zoologica, Journal Year: 2015, Volume and Issue: 64(3), P. 245 - 258

Published: Nov. 1, 2015

Large-scale phylogeographical patterns and the underlying factors driving species divergence in Mesoamerica are poorly understood, but it is widely documented that tectonic events Pleistocene climate changes play an important role determining diversification. As glaciations developed only around high mountains, one hypothesis known effects of Last Glacial Maximum on geographical distribution genetic diversity bird populations, producing contraction/ expansion latitudinal pattern observed temperate species, should be largely undetected resident populations inhabiting environmentally more stable habitats. To gain insight into Quaternary habitat stability diversity, we use ecological niche modelling generalised linear to determine eight widespread or range restricted hummingbird species. We found lesser suitable from past present most than those predicted by palaeodistribution models at northern regions. Contemporary seasonal precipitation, had superior explanatory power, magnitude directionality their varied between range-restricted distributed studied have not responded equally this complex region, suggesting differences and/or altitudinal influenced species-specific responses linked region also contemporary seasonality associated with availability floral resources.

Language: Английский

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Phylogenetic and phenotypic filtering in hummingbirds from urban environments in Central Mexico

Evolutionary Ecology, Journal Year: 2020, Volume and Issue: 34(4), P. 525 - 541

Published: May 22, 2020

Language: Английский

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The roles of vicariance and dispersal in the differentiation of two species of the Rhinella marina species complex

Molecular Phylogenetics and Evolution, Journal Year: 2019, Volume and Issue: 145, P. 106723 - 106723

Published: Dec. 28, 2019

The high levels of Neotropical biodiversity are commonly associated with the intense Neogene-Quaternary geological events and climate dynamics. Here, we investigate evolutionary history two species closely related amphibians (R. horribilis R. marina). We combine published data new mitochondrial DNA sequences multiple nuclear markers, including 12 microsatellites. phylogenetic analyses showed support for grouping samples in main clades; (Central America Mexico) marina (South east Andes). However, inferences also show an evident mito-nuclear discordance. use Approximate Bayesian Computation (ABC) to test role different diversification between groups recovered. found that both were affected primarily by a recent Pleistocene divergence, which was similar divergence estimate revealed Isolation-with-Migration model, under persistent bidirectional gene flow through time. provide first evidence is differentiated from South American at level supporting taxonomic status horribilis, has been controversial more than century.

Language: Английский

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