ArticleScientific reports2020
Range-wide genetic structure in the thorn-tailed rayadito suggests limited gene flow towards peripheral populations.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 17 citations in OpenAlex.
- Ecological Context Constrains Host-Associated Genetic Structure in the Common Cuckoo.Ecology and evolution · 2026Article
- The Subantarctic Rayadito (Aphrastura subantarctica), a new bird species on the southernmost islands of the Americas.Scientific reports · 2022Article
- Evidence of low within-pair genetic relatedness in a relict population of Thorn-tailed Rayadito despite long-term isolation.Ecology and evolution · 2022Article
- The extreme rainfall gradient of the Cape Horn Biosphere Reserve and its impact on forest bird richness.Biodiversity and conservation · 2022Article
- Female extra-pair behavior is not associated with reduced paternal care in Thorn-tailed Rayadito.Ecology and evolution · 2021Article
- Extrapair paternity in two populations of the socially monogamous Thorn-tailed RayaditoEcology and evolution · 2020Article
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Authors and funding
12 authors at 5 institutions in 3 countries.
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Abstract
Understanding the population genetic consequences of habitat heterogeneity requires assessing whether patterns of gene flow correspond to landscape configuration. Studies of the genetic structure of populations are still scarce for Neotropical forest birds. We assessed range-wide genetic structure and contemporary gene flow in the thorn-tailed rayadito (Aphrastura spinicauda), a passerine bird inhabiting the temperate forests of South America. We used 12 microsatellite loci to genotype 582 individuals from eight localities across a large latitudinal range (30°S-56°S). Using population structure metrics, multivariate analyses, clustering algorithms, and Bayesian methods, we found evidence for moderately low regional genetic structure and reduced gene flow towards the range margins. Genetic differentiation increased with geographic distance, particularly in the southern part of the species' distribution where forests are continuously distributed. Populations in the north seem to experience limited gene flow likely due to forest discontinuity, and may comprise a demographically independent unit. The southernmost population, on the other hand, is genetically depauperate and different from all other populations. Different analytical approaches support the presence of three to five genetic clusters. We hypothesize that the genetic structure of the species follows a hierarchical clustered pattern.
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