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Journal article
Conservative plumage masks extraordinary phylogenetic diversity in the Grallaria rufula (Rufous Antpitta) complex of the humid Andes
The Auk, v 137(3), pp 1-25
01 Jul 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The Grallaria rufula complex is currently considered to consist of 2 species, G. rufula (Rufous Antpitta) and G. blakei (Chestnut Antpitta). However, it has been suggested that the complex, populations of which occur in humid montane forests from Venezuela to Bolivia, comprises a suite of vocally distinct yet morphologically cryptic species. We sequenced nuclear and mitochondrial DNA for 80 individuals from across the distribution of the complex to determine the extent of genetic variation between and within described taxa. Our results revealed 18 geographically coherent clades separated by substantial genetic divergence: 14 within rufula, 3 within blakei, and 1 corresponding to G. rufocinerea (Bicolored Antpitta), a species with distinctive plumage found to be nested within the complex. Neither G. rufula nor G. blakei as presently defined was monophyletic. Although 6 of the 7 recognized subspecies of G. rufula were monophyletic, several subspecies contained substantial genetic differentiation. Genetic variation was largely partitioned across recognized geographic barriers, especially across deep river valleys in Peru and Colombia. Coalescent modeling identified 17 of the 18 clades as significantly differentiated lineages, whereas analyses of vocalizations delineated 16 biological species within the complex. The G. rufula complex seems unusually diverse even among birds of the humid Andes, a prime location for cryptic speciation; however, the extent to which other dispersal-limited Andean species groups exhibit similar degrees of cryptic differentiation awaits further study.
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Details
- Title
- Conservative plumage masks extraordinary phylogenetic diversity in the Grallaria rufula (Rufous Antpitta) complex of the humid Andes
- Creators
- R. Terry Chesser - United States Geological SurveyMorton L. Isler - National Museum of Natural HistoryAndres M. Cuervo - Universidad Nacional de ColombiaC. Daniel Cadena - Universidad de Los AndesSpencer C. Galen - Drexel University, Academy of Natural Sciences of Drexel UniversityLaura M. Bergner - Smithsonian Conservation Biology InstituteRobert C. Fleischer - Smithsonian Conservation Biology InstituteGustavo A. Bravo - Harvard UniversityDaniel F. Lane - Houston Museum of Natural SciencePeter A. Hosner - National Museum of Natural History
- Publication Details
- The Auk, v 137(3), pp 1-25
- Publisher
- Oxford Univ Press
- Number of pages
- 25
- Grant note
- National Museum of Natural History, Smithsonian Institution; Smithsonian Institution; Smithsonian National Museum of Natural History
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Academy of Natural Sciences of Drexel University
- Web of Science ID
- WOS:000570000900001
- Scopus ID
- 2-s2.0-85089658755
- Other Identifier
- 991021860771504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Ornithology