Plant Systematics and Evolution, Год журнала: 2018, Номер 304(5), С. 607 - 617
Опубликована: Фев. 8, 2018
Язык: Английский
Journal of Biogeography, Год журнала: 2015, Номер 42(9), С. 1586 - 1600
Опубликована: Июнь 19, 2015
Abstract Aim (1) To synthesize data on the physical and phylogeographical history of Mexican highlands, with a focus Trans‐Mexican Volcanic Belt ( TMVB ), (2) to propose approaches analyses needed for examining interaction climate volcanism. Location Mexico. Methods We performed literature survey climatic, geological highlands. then assessed how expected effects topographic isolation, co‐occurring palaeoclimatic fluctuations volcanism can be tested against distribution genetic diversity high‐elevation taxa. Results The highlands present complex biogeographical, climatic history. Montane taxa have been exposed sky‐island dynamic through fluctuations, allowing long‐term in situ population persistence, while also promoting recent divergence speciation events. activity transformed part during Pleistocene, mainly , leading topographical changes. provide suitable template examine low‐latitude mountains facilitate both persistence biodiversity as well allopatric parapatric driven by Main conclusions Climate together volcanism, diversification local within climate–volcanism is challenging study; however, this overcome coupling genomic landscape that integrate region.
Язык: Английский
Процитировано
277
BMC Evolutionary Biology, Год журнала: 2016, Номер 16(1)
Опубликована: Апрель 12, 2016
Ecological adaptation to host taxa is thought result in mistletoe speciation via race formation. However, historical and ecological factors could also contribute explain genetic structuring particularly when races are distributed allopatrically. Using sequence data from nuclear (ITS) chloroplast (trnL-F) DNA, we investigate the differentiation of 31 Psittacanthus schiedeanus (Loranthaceae) populations across Mesoamerican species range. We conducted phylogenetic, population spatial analyses on 274 individuals P. gain insight evolutionary history these populations. Species distribution modeling, isolation with migration Bayesian inference methods were used infer transition invasion, which scenarios compared through posterior probabilities. Our revealed shallow levels structure three groups present sample area. Nine haplotypes identified after sequencing trnL-F intergenic spacer. These showed phylogeographic structure, restricted gene flow corresponding individuals/populations separated by habitat (cloud forest localities San Luis Potosí northwestern Oaxaca Chiapas, xeric vegetation central Oaxaca, tropical deciduous forests Chiapas), post-glacial expansions potentially invasion types. Similarly, 44 ITS ribotypes suggest despite fact that most frequent widespread indicating effective pollen. Gene estimates, a significant signal demographic expansion, range shifts under past climatic conditions predicted modeling mistletoes cloud forests. Approximate Computation (ABC) strongly supported scenario simultaneous divergence among isolated recently. results provide support for predominant role environmental driving parrot-flower mistletoes. The ABC consistent independent identity, types recently populations, accumulating slight phenotypic differences due recent habitats. Under this scenario, fluctuations throughout Pleistocene would have altered suitable Mesoamerica leading variation continuity isolation. findings add an understanding colonization shaping communities region.
Язык: Английский
Процитировано
52
PeerJ, Год журнала: 2015, Номер 4, С. e1556 - e1556
Опубликована: Янв. 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.
Язык: Английский
Процитировано
35
Molecular Phylogenetics and Evolution, Год журнала: 2019, Номер 138, С. 17 - 30
Опубликована: Май 23, 2019
Язык: Английский
Процитировано
32
Journal of Heredity, Год журнала: 2015, Номер 106(2), С. 196 - 210
Опубликована: Фев. 2, 2015
Phylogeographical work on cloud forest-adapted species provides inconsistent evidence forest dynamics during glacial cycles. A study of Rhipsalis baccifera (Cactaceae), a bird-dispersed epiphytic mistletoe cactus, was conducted to investigate genetic variation at sequence data from nuclear [internal transcribed spacer (ITS), 677 bp] and chloroplast (rpl32-trnL, 1092bp) DNA for 154 individuals across the range in Mesoamerica determine if such patterns are consistent with expansion/contraction model We population spatial analyses as well gene flow divergence time estimates between 24 populations comprising distribution R. Mexico Guatemala gain insight evolutionary history these populations, complementary modeling approach frame information derived into an explicit paleoecological context. The results revealed phylogeographical break Isthmus Tehuantepec, high levels diversity among areas. Despite differentiation some widespread ITS ribotypes suggest effective via pollen shown by rpl32-trnL suggests more restricted seed flow. Predictions models under past last maximum (LGM) climatic conditions significant signal demographic expansion that experienced tracking shifted lowlands connectivity LGM.
Язык: Английский
Процитировано
31
Ecology and Evolution, Год журнала: 2016, Номер 6(4), С. 1104 - 1127
Опубликована: Янв. 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.
Язык: Английский
Процитировано
30
Molecular Phylogenetics and Evolution, Год журнала: 2016, Номер 99, С. 76 - 88
Опубликована: Март 14, 2016
Язык: Английский
Процитировано
27
PeerJ, Год журнала: 2016, Номер 4, С. e2696 - e2696
Опубликована: Ноя. 16, 2016
Background Cloud forests, characterized by a persistent, frequent or seasonal low-level cloud cover and fragmented distribution, are one of the most threatened habitats, especially in Neotropics. Tree ferns among conspicuous elements these restricted to regions which minimum temperatures rarely drop below freezing rainfall is high evenly distributed around year. Current phylogeographic data suggest that some forest-adapted species remained situ expanded lowlands during glacial cycles contracted allopatrically interglacials. Although observed genetic signals population size changes including tree correspond predicted Pleistocene climate change dynamics, patterns intraspecific lineage divergence showed temporal incongruence. Methods Here we combined phylogenetic analyses, ancestral area reconstruction, time estimates with climatic altitudinal (environmental space) for phenotypic traits fern make inferences about evolutionary processes deep time. We used Bayesian inference geographic distribution investigate elevation environmental preferences Mesoamerican ferns. The phylogeny was then estimate times ask whether shifts were linked events historical preferences. Results trees retrieved Cyathea, Alsophyla, Gymnosphaera Sphaeropteris monophyletic clades. Splits genera found forests recent, from Neogene Quaternary, Australia identified as clades genera, except Mesoamerica. Climate tolerance not divergent hypothesized ancestors significant variables elevation. For elevational shifts, repeated low elevations. Conclusions Our representatives Cyatheaceae main lineages migrated different have persisted environmentally unstable areas but extant diverged recentrly their ancestors.
Язык: Английский
Процитировано
24
Australian Systematic Botany, Год журнала: 2016, Номер 29(6), С. 489 - 489
Опубликована: Янв. 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.
Язык: Английский
Процитировано
20
Folia Zoologica, Год журнала: 2015, Номер 64(3), С. 245 - 258
Опубликована: Ноя. 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.
Язык: Английский
Процитировано
20