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

Ornelas, Juan Francisco; León, Salvador González de; González, Clementina; Licona-Vera, Yuyini; Ortiz-Rodríguez, Andrés Ernesto; Rodríguez‐Gómez, Flor

doi:10.25225/fozo.v64.i3.a6.2015

Cited by 16 publications

(17 citation statements)

References 51 publications

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“…In addition, this scenario is supported by the modeled paleodistribution that predicted that L. amethystinus populations apparently remained in situ during the LGM (see also Ornelas et al. ). This basin–mountain geographical pattern would have created a significant barrier to gene flow and the spread of the species, and the more arid conditions of the lowlands would have caused habitat fragmentation and a high degree of population isolation for L. amethystinus during the interglacial periods.…”

Section: Discussionmentioning

confidence: 70%

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

Ornelas

González

Hernández‐Baños

et al. 2016

Ecology and Evolution

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

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Section: Discussionmentioning

confidence: 70%

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

Ornelas

González

Hernández‐Baños

et al. 2016

Ecology and Evolution

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“…Upon secondary contact, these groups formed hybrid zones, interbreeding to varying extents, and the mito-nuclear discordance was promoted by divergent patterns of gene flow between the two genomes ( Toews & Brelsford, 2012 ). Potential range expansions and contractions in response to Pleistocene climate cycles may have contributed to the historical isolation and secondary contact of these taxa ( Hewitt, 2000 ; Zamudio & Savage, 2003 ; Melo-Ferreira et al, 2012 ; Campagna et al, 2014 ; Giarla & Jansa, 2015 ; Komaki et al, 2015 ; Ornelas et al, 2015 ). The resulting distribution dynamics have been suggested as the primary cause of historical mtDNA introgression events ( Mao et al, 2013 ; Rodríguez-Gómez & Ornelas, 2015 ), which might result in complex morphological and genetic scenarios ( Rheindt & Edwards, 2011 ; Acevedo et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

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

Jiménez¹,

Ornelas²

2015

PeerJ

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

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“…Integrative application of phylogeography and ENM has become a key approach for explaining intraspecific evolutionary patterns associated with climate oscillations (e.g., Bonatelli et al, 2014;Carstens & Richards, 2007;Ornelas et al, 2015;Perktas, Gu¨r, & Ada, 2015;Peterson & Nya´ri, 2007;Waltari et al, 2007). Numerous studies using this approach indicate that the genetic differentiation of many extant taxa and species ranges were affected by climatic and environmental discontinuities as barriers and Pleistocene glacial/interglacial cycles, most notably in the temperate regions of northern Europe and North America (Carnaval, Hickerson, Haddad, Rodrigues, & Craig Moritz, 2009;Hewitt, 2000).…”

Section: Introductionmentioning

confidence: 99%

Genetic Differentiation and Fragmentation in Response to Climate Change of the Narrow EndemicPsittacanthus auriculatus

Ornelas

Licona-Vera

Vásquez-Aguilar

2018

Tropical Conservation Science

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The state of Oaxaca is positioned in a rather unique biogeographical position with the highest diversity of vascular plants in Mexico. The isolation of xeric valleys surrounded by complex mountain ranges in Oaxaca supplies an excellent opportunity to investigate the influence of the Pleistocene events on xeric species. To test for the alternative hypotheses of Pleistocene glacial refugia, we used sequences of two chloroplast markers to examine the phylogeographic patterns of the endemic mistletoe species Psittacanthus auriculatus (Loranthaceae) across its known range in Oaxaca and conducted ecological niche modeling (ENM) to explore changes of its distribution range through present, future, and palaeo periods. Our results revealed two groups corresponding to the distribution of individuals/populations from the northern locations (western valleys), and those from southern localities at central valleys of Oaxaca. A significant genetic signal of differentiation, demographic stability, and contraction of suitable habitat during the Last Glacial Maximum predicted by ENMs strongly supported a scenario of habitat fragmentation during the Late Pleistocene. We conclude that the genetic differentiation of P. auriculatus is consistent with a model of range contraction during glacial cycles and expansion during interglacials with no major range changes under future scenarios of climate change. The findings verified the profound effects of Pleistocene climatic fluctuations on this endemic mistletoe species, and the low genetic diversity within populations highlights, paradoxically, the urgency of preserving vulnerable populations of endemic yet parasitic mistletoes.

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

Cited by 16 publications

References 51 publications

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

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

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

Genetic Differentiation and Fragmentation in Response to Climate Change of the Narrow EndemicPsittacanthus auriculatus

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