Analyses of plumage coloration and genetic variation confirm the hybridization of Pipra fasciicauda and Pipra aureola in the Brazilian Amazon basin

Sampaio, Larissa; Ferraz, Dnilson Oliveira; Costa, Ana Carolina Moreira da; Aleixo, Alexandre; Cerqueira, Pablo Vieira; Araripe, Juliana; Rêgo, Péricles Sena do

doi:10.1007/s10336-020-01744-1

Cited by 5 publications

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References 14 publications

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“…In addition to these hybrid zones for six pairs of parapatric taxa, two additional parapatric pairs occur for which we lacked sufficient geographical sampling to assess hybridization. P. a. aureola and P. f. scarlatina are documented to hybridize (Sampaio et al, 2020). We detected no admixture in the nearest sampled populations of P. f. scarlatina (located along the lower Xingu River located just 150 km south of the Amazon River where P. a. aureola occurs), but small traces of P. f. scarlatina ancestry (up to 4%) were reconstructed to occur in geographically adjacent populations of P. a. aureola (population 5, Figure 1f) from north of the Amazon River, but not in distant populations (population 3 , Figure 1f), suggesting a hybrid zone probably occurs in the unsampled region.…”

Section: Resultsmentioning

confidence: 99%

“…While subspecies have been defined within each species, previous authors have noted extensive individual variation within populations in the plumage characters used to delimit subspecies, and have suggested that some subspecies may not be valid (Kirwan & Green, 2011;Snow, 2004). Hybrids have been reported along contact zones between each of these species pairs (Haffer, 1997;McCarthy, 2006;Sampaio et al, 2020), but the extent of hybridization is unknown. eages into reproductively isolated species.…”

Section: Introductionmentioning

confidence: 99%

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Gene flow, genomic homogenization and the timeline to speciation in Amazonian manakins

et al. 2022

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Phylogeographical studies of the most species‐rich region of the planet—the Amazon basin—have repeatedly uncovered genetically distinctive, allopatric lineages within currently named species, but understanding whether such lineages are reproductively isolated species is challenging. Here we harness the power of genome‐wide data sets together with detailed phylogeographical sampling to both characterize the number of unique lineages and infer levels of reproductive isolation for three parapatric manakin species that make up the genus Pipra. The mitochondrial and nuclear genomes both support six distinctive lineages. The youngest lineages are now highly admixed with each other across major portions of their geographical ranges with one lineage now extinct in a genomically unadmixed state. In contrast, the oldest sets of lineages—dated to 1.4 million years—exhibit narrow hybrid zones. By fitting demographic models to parapatric lineage pairs we found that levels of gene flow and genomic homogenization decline with increasing evolutionary age. Only lineages descending from the basal node at 1.4 million years ago in the genus experience negligible gene flow, possess genomes resistant to homogenization and are separated by narrow hybrid zones. We conclude that a million years or more were required for Pipra manakins to become reproductively isolated. We suggest the six lineages be reclassified as two or three reproductively isolated species. Our unique approach to quantifying reproductive isolation in parapatric lineages could be applied broadly to other phylogeographical studies and would help determine species classification of the plethora of newly identified lineages in the Amazon basin and other regions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gene flow, genomic homogenization and the timeline to speciation in Amazonian manakins

et al. 2022

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West–east diversification model explains pattern phylogeography of the Band-tailed Manakin Pipra fasciicauda

et al. 2023

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Courtship dance similarity, but not complexity, may explain patterns of hybridization in manakins (Aves: Pipridae)

Ottenburghs

2024

Biological Journal of the Linnean Society

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Differences in behaviour can play an important role in the emergence of species and the maintenance of species boundaries. In birds, behavioural isolation mechanisms range from simple vocalizations to elaborate courtship displays. The breakdown of these isolation mechanisms could result in the production of viable hybrid offspring. In general, we might expect a negative relationship between the complexity of a behavioural isolation mechanism and the incidence of hybridization. I tested this prediction in manakins, a Neotropical bird family that shows a large variety of courtship displays. I compiled a database of reliable hybrid records and quantified the complexity of species-specific courtship displays. Binary logistic regressions indicated that courtship similarity was a better predictor of hybridization probability than courtship complexity. However, this pattern was strongly influenced by phylogenetic relatedness, in that closely related species exhibited similar courtship displays that were already being performed by their common ancestor. The main limitation of this study concerns the incomplete dataset. I could assess the courtship complexity for only 22 manakin species; consequently, not all hybrid combinations could be included in the analyses. Nonetheless, these findings provide important insights into the role of courtship displays in explaining patterns of hybridization.

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Analyses of plumage coloration and genetic variation confirm the hybridization of Pipra fasciicauda and Pipra aureola in the Brazilian Amazon basin

Cited by 5 publications

References 14 publications

Gene flow, genomic homogenization and the timeline to speciation in Amazonian manakins

Gene flow, genomic homogenization and the timeline to speciation in Amazonian manakins

West–east diversification model explains pattern phylogeography of the Band-tailed Manakin Pipra fasciicauda

Courtship dance similarity, but not complexity, may explain patterns of hybridization in manakins (Aves: Pipridae)

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