LINEAGE DIVERSIFICATION AND MORPHOLOGICAL EVOLUTION IN A LARGE-SCALE CONTINENTAL RADIATION: THE NEOTROPICAL OVENBIRDS AND WOODCREEPERS (AVES: FURNARIIDAE)

Patterns of diversification in species-rich clades provide insight into the processes that generate biological diversity. We tested different models of lineage and phenotypic diversification in an exceptional continental radiation, the ovenbird family Furnariidae, using the most complete species-lev...

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Bibliographic Details
Published in:Evolution 2011-10, Vol.65 (10), p.2973-2986
Main Authors: Derryberry, Elizabeth P., Claramunt, Santiago, Derryberry, Graham, Chesser, R. Terry, Cracraft, Joel, Aleixo, Alexandre, Pérez-Emán, Jorge, Remsen, Jr, J. V., Brumfield, Robb T.
Format: Article
Language:English
Subjects:
Adaptive Radiation
Animals
Bayes Theorem
Biodiversity
Biological Evolution
Biological taxonomies
Birds
Ecological genetics
Evolution
Extinction, Biological
Genotype & phenotype
Modeling
Models, Genetic
Morphological Evolution
Passeriformes - anatomy & histology
Passeriformes - genetics
Phenotypic traits
Phylogenetics
Phylogeny
Radiation
Speciation
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Summary:Patterns of diversification in species-rich clades provide insight into the processes that generate biological diversity. We tested different models of lineage and phenotypic diversification in an exceptional continental radiation, the ovenbird family Furnariidae, using the most complete species-level phylogenetic hypothesis produced to date for a major avian clade (97% of 293 species). We found that the Furnariidae exhibit nearly constant rates of lineage accumulation but show evidence of constrained morphological evolution. This pattern of sustained high rates of speciation despite limitations on phenotypic evolution contrasts with the results of most previous studies of evolutionary radiations, which have found a pattern of decelerating diversity-dependent lineage accumulation coupled with decelerating or constrained phenotypic evolution. Our results suggest that lineage accumulation in tropical continental radiations may not be as limited by ecological opportunities as in temperate or island radiations. More studies examining patterns of both lineage and phenotypic diversification are needed to understand the often complex tempo and mode of evolutionary radiations on continents.
ISSN:0014-3820
1558-5646
DOI:10.1111/j.1558-5646.2011.01374.x