The genomic revolution and species delimitation in birds (and other organisms): Why phenotypes should not be overlooked

Ornithology, Journal Year: 2021, Volume and Issue: 138(2)

Published: March 1, 2021

Abstract Given the availability of genomic data to identify separately evolving groups organisms, many researchers establish species limits based on assessments extent gene flow among populations and often use analytical approaches in which is explicitly disallowed. Strictly considering lack of—or limited—gene as main or only criterion delimit involves two complications practice. First, used analyze genome-wide cannot by themselves distinguish from within-species population structure, particularly allopatric organisms. Second, recognizing those lineages one can using such fails embrace role other evolutionary forces (i.e. various forms selection) defining lineages. Using examples birds, we call for importance additional delimitation explain why commonly taxonomic studies may be insufficient properly uncover limits. By processes that structure genotypic phenotypic variation during speciation, argue rigorous analyses remain crucial genomics era because phenotypes uniquely inform us about selection maintaining cohesion Evolutionary theory describing roles flow, genetic drift natural sexual origin maintenance calls an integration with phenomics avian delimitation.

Language: Английский

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Speciation rates are positively correlated with the rate of plumage color evolution in hummingbirds

Evolution, Journal Year: 2021, Volume and Issue: 75(7), P. 1665 - 1680

Published: May 26, 2021

A fascinating pattern in nature is the uneven distribution of biodiversity among clades, some with low species richness and phenotypic variation contrast to others remarkable diversity. In animals, communication signals are crucial for intra- interspecific interactions likely an important factor speciation. However, evidence association between evolution such speciation mixed. hummingbirds, plumage coloration signal, particularly mate selection. Here, using reflectance data 237 hummingbird (∼66% total diversity), we demonstrate that color rates associated rates, differences feather patches consistent interplay natural sexual We found female multiple elements, including gorget, were similar those males. Although male this patch was speciation, gorget not. other patches, relationship pervasive sexes. anticipate future studies on animal will find signaling traits both sexes has played a vital role generating signal

Language: Английский

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Divergence and Levels: Challenging Allopatric Speciation and the Extrapolationist Premise

Evolutionary Biology/Evolutionary biology, Journal Year: 2025, Volume and Issue: unknown, P. 283 - 316

Published: Jan. 1, 2025

Language: Английский

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Extensive hybridization between two Andean warbler species with shallow divergence in mtDNA

Ornithology, Journal Year: 2021, Volume and Issue: 138(1)

Published: Jan. 4, 2021

Abstract Studying processes acting on differentiated populations upon secondary contact, such as hybridization, is important to comprehensively understand how species are formed and maintained over time. However, avian speciation studies in the tropical Andes have largely focused role of topographic ecological barriers promoting divergence allopatry, seldom examining hybridization introgression. We describe a hybrid zone involving 2 closely related Andean warblers (Parulidae), Golden-fronted Redstart (Myioborus ornatus), Spectacled melanocephalus). Geographic ranges these abut near Colombia-Ecuador border many specimens from region exhibit intermediate phenotypes, but formal description phenotypic variation contact was heretofore lacking. collected across transect encompassing area where areas only “pure” parental phenotypes M. ornatus chrysops melanocephalus ruficoronatus occur. described plumage traits including patterns head ventral coloration tail markings based 321 specimens. To genetic broader phylogeographic context, we used sequences mitochondrial ND2 gene for 219 individuals entire range both species, all subspecies, Venezuela Bolivia. documented ~200 km wide coloration, most common forms do not overlap geographically, consistent with extensive hybridization. Across ornatus–M. complex, structure shallow, breaks coinciding clearly one feature. Such low striking given high diversity current taxonomy group. Our data suggest that strong, allow us postulate hypotheses be tested using forthcoming genomic data.

Language: Английский

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Testing the simple and complex versions of Gloger’s rule in the Variable Antshrike (Thamnophilus caerulescens, Thamnophilidae)

Ornithology, Journal Year: 2020, Volume and Issue: 137(3)

Published: May 8, 2020

Abstract Gloger’s rule is a classic ecogeographical principle that, in its simplest version, predicts animals should be darker warmer and wetter climates. In rarely tested more complex it also rufous drier The Variable Antshrike (Thamnophilus caerulescens) widely distributed South American passerine that presents an impressive amount of plumage color variation occupies wide variety climatic conditions. Moreover, genetic vocal evidence indicate ongoing hybridization south-central Bolivia among 3 populations with very distinct plumages. We collected data from 232 specimens throughout this species’ distribution to test the predictions rule. found negative correlation between brightness precipitation, consistent simple version contrast, we birds were cooler climates, contrary rule, but recent findings other taxa. support for both suggest might driven by background matching. conclude concurring suggestion reformulated exclusively terms humidity.

Language: Английский

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Strong habitat-specific phenotypic plasticity but no genome-wide differentiation across a rainforest gradient in an African butterfly

Evolution, Journal Year: 2023, Volume and Issue: 77(6), P. 1430 - 1443

Published: March 25, 2023

Abstract Habitat-specific thermal responses are well documented in various organisms and likely determine the vulnerability of populations to climate change. However, underlying roles genetics plasticity that shape such habitat-specific patterns rarely investigated together. Here we examined butterfly Bicyclus dorothea originating from rainforest ecotone habitats Cameroon under common garden conditions. We also sampled wild-caught butterflies forest sites used RADseq explore genome-wide population differentiation. found differences level phenotypic across habitats. Specifically, exhibited greater sensitivity wing eyespot features with variable development temperatures relative populations. Known adaptive eyespots species suggest this morphological is divergent selection environmental gradients. no distinct structure variation between habitats, suggesting high ongoing gene flow homogenizing most parts genome.

Language: Английский

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Genetic data and niche differences suggest that disjunct populations of Diglossa brunneiventris are not sister lineages

Ornithology, Journal Year: 2021, Volume and Issue: 138(3)

Published: April 12, 2021

Abstract Disjunct distributions within a species are of great interest in systematics and biogeography. This separation can function as barrier to gene flow when the distance among populations exceeds dispersal capacity individuals, depending on duration barrier, it may eventually lead speciation. Here, we describe patterns geographic differentiation 2 disjunct Diglossa brunneiventris separated by ~1,000 km along Andes. vuilleumieri is isolated northern Colombia, while has seemingly continuous distribution across Peru, Bolivia, Chile. We sequenced mitochondrial nuclear DNA D. subspecies evaluate whether they form monophyletic clade, including other 3 carbonaria complex (D. gloriosa, humeralis, carbonaria). also constructed ecological niche models for each compare their climatic niches. found that using all available molecular data, not sister lineages. In fact, more closely related complex. Our modeling analyses showed occupying almost entirely different An additional expected result was might encompass cryptic than previously considered. suggest reevaluating taxonomic status these populations, especially subspecies, given its highly restricted range potential threatened status.

Language: Английский

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Can Mitogenomes of the Northern Wheatear (Oenanthe oenanthe) Reconstruct Its Phylogeography and Reveal the Origin of Migrant Birds?

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: June 9, 2020

Abstract The Northern Wheatear ( Oenanthe oenanthe , including the nominate and two subspecies O. o. leucorhoa libanotica) Seebohm’s seebohmi ) are today regarded as distinct species. Before, all four taxa were of Wheatear. Their classification has exclusively been based on ecological morphological traits, while their molecular characterization is still missing. With this study, we used next-generation sequencing to assemble 117 complete mitochondrial genomes covering . We compared resolution power each individual marker concatenated sets reconstruct phylogeny estimate speciation times three taxa. Moreover, tried identify origin migratory wheatears caught Helgoland (Germany) Crete (Greece). Mitogenome analysis revealed different ancient lineages that separated around 400,000 years ago. Both consisted a mix phylogenetic trees, well haplotype networks incongruent with present morphology-based classification. could not distinguish these presumed genetic panmixia among populations might be consequence introgression between wheatear populations.

Language: Английский

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Phenotypic differentiation despite gene flow: Beak morphology, bite performance, and population genetics of Loggerhead Shrikes (Lanius ludovicianus)

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(3)

Published: March 1, 2024

Previous studies of Loggerhead Shrikes (Laniidae:

Language: Английский

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Museomics help resolving the phylogeny of snowfinches (Aves, Passeridae, Montifringilla and allies)

Molecular Phylogenetics and Evolution, Journal Year: 2024, Volume and Issue: 198, P. 108135 - 108135

Published: June 24, 2024

Historical specimens from museum collections provide a valuable source of material also remote areas or regions conflict that are not easily accessible to scientists today. With this study, we providing taxon-complete phylogeny snowfinches using historical DNA whole skins an endemic species Afghanistan, the Afghan snowfinch, Pyrgilauda theresae. To resolve strong between previous phylogenetic hypotheses, generated novel mitogenome sequences for selected taxa and genome-wide SNP data ddRAD sequencing all extant snowfinch Qinghai-Tibet Plateau (QTP) extended intraspecific sampling sole Central Western Palearctic (Montifringilla nivalis). Our reconstructions unanimously refuted previously suggested paraphyly genus Pyrgilauda. Misplacement one species-level taxon (Onychostruthus tazcanowskii) in phylogenies was undoubtedly inferred chimeric mitogenomes included heterospecific sequence information. Furthermore, comparison showed presumed sister-group relationship M. nivalis QTP henrici based on flawed taxonomy. were largely congruent supported reciprocal monophyly genera Montifringilla with monotypic Onychostruthus being sister latter. The P. theresae likely originated rather ancient Pliocene out-of-Tibet dispersal probably common ancestor ruficollis. trans-Palearctic white-winged nivalis, confirmed lineage divergence Asian European clade dated 1.5 – 2.7 million years ago (mya). Genome-wide subtle among samples Alps Cantabrian mountains.

Language: Английский

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