Congruence of phenotypic and genetic variation at the subspecific level in a Neotropical passerine

Authors
García, Natalia Cristina; Barreira, Ana Soledad; Lavinia Oblanca, Pablo Damián; Tubaro, Pablo Luis
Publication Year
2016
Language
English
Format
article
Status
Published version
Description
The increasing availability of molecular phylogenies has highlighted the issue that genotypic and phenotypic patterns of variation are not always congruent, particularly below the species level. This has led to an ongoing discussion on the validity of the subspecies category and on the use of molecular data to help revise traditional classifications based on phenotypic data. We compared patterns of spatial diversification in genotype and phenotype in the Blue-black Grosbeak Cyanocompsa cyanoides, a Neotropical songbird with four recognised subspecies. Variation in phenotype and genotype are partially congruent among the four subspecies. The more genetically divergent subspecies C. c. rothschildii is strongly differentiated from the other subspecies in meristic characters, plumage colo uration and song . W e suggest that this taxon be accorded full species status as C. rothschildii. Regarding the remaining diversity within C. cyanoides, both phenotypic and genetic markers suggests that it could be divided into two subgroups, but the boundaries of genetic lineages do not coincide with those of subspecies defined using phenotypic data. Lack of complete congruence between phenotypic and molecular markers may be expected, since they are subject to different evolutionary processes. The discordance could also be due to a methodological problem, as subspecies ? geographic boundaries were defined on the basis of phenotypic descriptions that were not systematically evaluated. We consider the subspecies to be an informative taxonomic entity , but note that many current subspecific designations for diverse species need extensive reassessment.
Fil: García, Natalia Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Barreira, Ana Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Lavinia Oblanca, Pablo Damián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Tubaro, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Subject
SUBESPECIES
PLUMAGE COLORATION
SONG
BODY SIZE
MITOCHONDRIAL DNA MARKERS
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/47783