Jason T. Weir
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View article: Population Divergence in the Eastern North American Boreal Forests: Extensive Gene Flow Characterises a Hybrid Zone Between Palm Warbler Subspecies (Parulidae: <i>Setophaga palmarum</i>)
Population Divergence in the Eastern North American Boreal Forests: Extensive Gene Flow Characterises a Hybrid Zone Between Palm Warbler Subspecies (Parulidae: <i>Setophaga palmarum</i>) Open
Pleistocene glaciations have shaped much of the population divergence events in the coniferous forests of North America. However, unlike in western North America, the evidence for forest fragmentation and population divergence associated w…
View article: Genomic Analysis Suggests That Mitonuclear Coevolution Proceeds Over Rapid Timescales in the Amazonian <i>Pipra</i> Manakin Complex
Genomic Analysis Suggests That Mitonuclear Coevolution Proceeds Over Rapid Timescales in the Amazonian <i>Pipra</i> Manakin Complex Open
Mitonuclear coevolution is defined as reciprocal selection between the nuclear and mitochondrial genomes and is necessary to maintain compatibility between nuclear‐ and mitochondrially‐encoded products that interact during mitochondrial pr…
View article: Latitudinal phylogenetic and diversity gradients are explained by a tropical-temperate transitional region
Latitudinal phylogenetic and diversity gradients are explained by a tropical-temperate transitional region Open
The distribution of ecological and evolutionary forces throughout space bring about the patterning of biodiversity. In large geographical areas, this causes the regionalization of biodiversity into structured units known as bioregions. In …
View article: Phylogeography of the Red‐Headed Manakin Supports the River‐Refuge Hypothesis
Phylogeography of the Red‐Headed Manakin Supports the River‐Refuge Hypothesis Open
Aim The Amazon rainforest is one of the most biodiverse regions on earth, but our understanding of the processes that have shaped its patterns of diversity remains incomplete. One hypothesis for Amazonian speciation is the river‐refuge hyp…
View article: Amazonian rivers are leaky barriers to gene flow in forest understory birds
Amazonian rivers are leaky barriers to gene flow in forest understory birds Open
Ever since Alfred Russel Wallace’s nineteenth-century observation that related terrestrial species are often separated on opposing riverbanks, major Amazonian rivers have been recognized as key drivers of speciation. However, rivers are dy…
View article: Whole genomes show contrasting trends of population size changes and genomic diversity for an Amazonian endemic passerine over the late quaternary
Whole genomes show contrasting trends of population size changes and genomic diversity for an Amazonian endemic passerine over the late quaternary Open
The “Amazon tipping point” is a global change scenario resulting in replacement of upland terra‐firme forests by large‐scale “savannization” of mostly southern and eastern Amazon. Reduced rainfall accompanying the Last Glacial Maximum (LGM…
View article: Correction: Population structure and history of North Atlantic Blue whales (Balaenoptera musculus musculus) inferred from whole genome sequence analysis
Correction: Population structure and history of North Atlantic Blue whales (Balaenoptera musculus musculus) inferred from whole genome sequence analysis Open
View article: Population structure and history of North Atlantic Blue whales (Balaenoptera musculus musculus) inferred from whole genome sequence analysis
Population structure and history of North Atlantic Blue whales (Balaenoptera musculus musculus) inferred from whole genome sequence analysis Open
Knowledge of genetic diversity and structure is essential for developing conservation strategies for endangered species. Blue whales were hunted to near extinction in the mid-twentieth century. Not-withstanding almost 380,000 animals kille…
View article: Data for: The role of adaptive ecological divergence during allopatric speciation in vertebrates
Data for: The role of adaptive ecological divergence during allopatric speciation in vertebrates Open
Zip file containing all code files and data files required to recreate the main empirical analysis of the paper. Also contains final result files with all parameter estimates from every individual analysis.
View article: Corrigendum: Distinguishing genomic homogenization from parapatric speciation in an elevationally replacing pair of Ramphocelus tanagers
Corrigendum: Distinguishing genomic homogenization from parapatric speciation in an elevationally replacing pair of Ramphocelus tanagers Open
Geographically connected species pairs with weakly differentiated genomes could either represent cases of genomic homogenization in progress or of incipient parapatric speciation. Discriminating between these processes is difficult because…
View article: Demographic decline and lineage-specific adaptations characterize New Zealand kiwi
Demographic decline and lineage-specific adaptations characterize New Zealand kiwi Open
Small and fragmented populations may become rapidly differentiated due to genetic drift, making it difficult to distinguish whether neutral genetic structure is a signature of recent demographic events, or of long-term evolutionary process…
View article: Character displacement drives trait divergence in a continental fauna
Character displacement drives trait divergence in a continental fauna Open
Significance A foundational concept in evolutionary ecology is that resource competition and other costly interactions drive trait divergence between closely related species—a process known as “character displacement.” Consistent with this…
View article: No signature of selection on the C-terminal region of glucose transporter 2 with the evolution of avian nectarivory
No signature of selection on the C-terminal region of glucose transporter 2 with the evolution of avian nectarivory Open
Background Flying birds, especially those that hover, need to meet high energetic demands. Birds that meet this demand through nectarivory face the added challenges of maintaining homeostasis in the face of spikes in blood sugar associated…
View article: Postzygotic isolation drives genomic speciation between highly cryptic<i>Hypocnemis</i>antbirds from Amazonia
Postzygotic isolation drives genomic speciation between highly cryptic<i>Hypocnemis</i>antbirds from Amazonia Open
How species evolve reproductive isolation in the species-rich Amazon basin is poorly understood in vertebrates. Here, we sequenced a reference genome and used a genome-wide sample of SNPs to analyze a hybrid zone between two highly cryptic…
View article: Correlates of bird collisions with buildings across three North American countries
Correlates of bird collisions with buildings across three North American countries Open
Collisions with buildings cause up to 1 billion bird fatalities annually in the United States and Canada. However, efforts to reduce collisions would benefit from studies conducted at large spatial scales across multiple study sites with s…
View article: Genomic data reveal a protracted window of introgression during the diversification of a neotropical woodcreeper radiation*
Genomic data reveal a protracted window of introgression during the diversification of a neotropical woodcreeper radiation* Open
The incidence of introgression during the diversification process and the timespan following divergence when introgression is possible are poorly understood in the neotropics where high species richness could provide extensive opportunitie…
View article: Genetic structure and biogeographic history of the Bicknell’s Thrush/ Gray-cheeked Thrush species complex
Genetic structure and biogeographic history of the Bicknell’s Thrush/ Gray-cheeked Thrush species complex Open
We examined species limits, admixture, and genetic structure among populations in the Bicknell’s Thrush (Catharus bicknelli)–Gray-cheeked Thrush (C. minimus) species complex to establish the geographic and temporal context of speciation in…
View article: Song playbacks demonstrate slower evolution of song discrimination in birds from Amazonia than from temperate North America
Song playbacks demonstrate slower evolution of song discrimination in birds from Amazonia than from temperate North America Open
Genetic data indicate differences in speciation rate across latitudes, but underlying causes have been difficult to assess because a critical phase of the speciation process is initiated in allopatry, in which, by definition, individuals f…
View article: Description of the song of the Nilgiri Thrush (Zoothera [aurea] neilgherriensis) and song differentiation across the Zoothera dauma species complex
Description of the song of the Nilgiri Thrush (Zoothera [aurea] neilgherriensis) and song differentiation across the Zoothera dauma species complex Open
Background Taxonomic treatment of the Zoothera dauma species complex is highly variable and has been hampered by the absence of song recordings for the Nilgiri Thrush (Zoothera [aurea] neilgherriensis). Methods I obtained two recordings of…
View article: Reply to Rosenthal et al.: Both premating and postmating isolation likely contributed to manakin hybrid speciation
Reply to Rosenthal et al.: Both premating and postmating isolation likely contributed to manakin hybrid speciation Open
In a recent letter to the editor, Rosenthal et al. (1) object to our proposal (2) that evolution of a unique male crown color in the avian hybrid species Lepidothrix vilasboasi might generate premating reproductive isolation from its paren…
View article: Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation
Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation Open
We possess limited understanding of how speciation unfolds in the most species-rich region of the planet—the Amazon basin. Hybrid zones provide valuable information on the evolution of reproductive isolation, but few studies of Amazonian v…
View article: Extraction of DNA from captive‐sourced feces and molted feathers provides a novel method for conservation management of New Zealand kiwi (<i>Apteryx</i>spp.)
Extraction of DNA from captive‐sourced feces and molted feathers provides a novel method for conservation management of New Zealand kiwi (<i>Apteryx</i>spp.) Open
Although some taxa are increasing in number due to active management and predator control, the overall number of kiwi ( Apteryx spp.) is declining. Kiwi are cryptic and rare, meaning current monitoring tools, such as call counts, radio tel…
View article: Supplementary material from "Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation"
Supplementary material from "Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation" Open
We possess limited understanding of how speciation unfolds in the most species rich region of the planet—the Amazon basin. Hybrid zones provide valuable information on the evolution of reproductive isolation, but few studies of Amazonian v…
View article: Database S2 from Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation
Database S2 from Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation Open
Xiphorhynchus sample details
View article: R code triangle plot simulations from Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation
R code triangle plot simulations from Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation Open
We possess limited understanding of how speciation unfolds in the most species rich region of the planet—the Amazon basin. Hybrid zones provide valuable information on the evolution of reproductive isolation, but few studies of Amazonian v…
View article: Database S1 from Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation
Database S1 from Morphologically cryptic Amazonian bird species pairs exhibit strong postzygotic reproductive isolation Open
Willisornis sample details
View article: Hybrid speciation leads to novel male secondary sexual ornamentation of an Amazonian bird
Hybrid speciation leads to novel male secondary sexual ornamentation of an Amazonian bird Open
Significance Hybridization between species can produce reproductively isolated lineages by combining parental genotypes in novel ways. Here, we used thousands of genetic markers to demonstrate that the recently rediscovered golden-crowned …
View article: Data from: Sexual selection, speciation and constraints on geographical range overlap in birds. Ecology Letters.
Data from: Sexual selection, speciation and constraints on geographical range overlap in birds. Ecology Letters. Open
Dataset 1 and 2 from Cooney et al. (2017) Sexual selection, speciation and constraints on geographical range overlap in birds. Ecology Letters.
View article: Explosive ice age diversification of kiwi
Explosive ice age diversification of kiwi Open
Significance The role of Pleistocene ice ages in driving a recent burst of diversification is controversial. We used thousands of loci to test the timing and rates of diversification in kiwi—a flightless avian group endemic to New Zealand.…
View article: Species coexistence: macroevolutionary relationships and the contingency of historical interactions
Species coexistence: macroevolutionary relationships and the contingency of historical interactions Open
Evolutionary biologists since Darwin have hypothesized that closely related species compete more intensely and are therefore less likely to coexist. However, recent theory posits that species diverge in two ways: either through the evoluti…