• Publications
  • Influence
Barcoding the butterflies of southern South America: Species delimitation efficacy, cryptic diversity and geographic patterns of divergence
This study supported the utility of DNA barcoding for the identification of the butterfly species of Argentina, but also highlighted several cases of both deep intraspecific and shallow interspecific divergence that should be studied in more detail.
A test of the riverine barrier hypothesis in the largest subtropical river basin in the Neotropics.
Comparisons informed by the geological history of the Paraná River and its influence on the ecological and climatic differences among ecoregions in the study area further bolster the finding that responses to this geographic barrier have been species-specific.
Dissecting the roles of body size and beak morphology in song evolution in the “blue” cardinalids (Passeriformes: Cardinalidae)
The results show that different morphological variables, even if strongly correlated, can exert differential constraints in a complex behavioral trait such as song.
Intraspecific and interspecific vocal variation in three Neotropical cardinalids (Passeriformes: Fringillidae) and its relationship with body mass
The maximum frequency and the emphasised frequency showed the expected negative correlation with body mass, supporting the idea that the aforementioned relationship stands when comparing closely related lineages in Cyanoloxia and Cyanocompsa and highlighting the importance of considering the role of avian morphology when studying the evolution of song.
Viewing geometry affects sexual dichromatism and conspicuousness of noniridescent plumage of Swallow Tanagers (Tersina viridis)
The results show that viewing geometry can alter color perception, even for noniridescent plumage coloration, and the relative position of the light source and the observer should be considered in studies of avian visual communication, particularly for species with plumages similar to that of Swallow Tanagers.
Stability and change through time in the dialects of a Neotropical songbird, the Rufous-collared Sparrow
It is concluded that habitat is an important factor in maintaining geographical boundaries of dialects of Rufous-collared Sparrows, and variation in some variables detected between 1987 and 2000 persisted to 2010–11 whereas other variables showed reversal over that period.
Vocal variation in relation to genetic structure in an Atlantic forest woodcreeper (Xiphorhynchus fuscus): evolutionary and taxonomic implications
Vocal variation within the Lesser Woodcreeper (Xiphorhynchus fuscus), an Atlantic forest suboscine passerine, is analyzed in relation to the genetic lineages previously described, showing that two of the genetic clades within this species have their own vocal type, while the other two lineages share a common type.
AVONET: morphological, ecological and geographical data for all birds.
Functional traits offer a rich quantitative framework for developing and testing theories in evolutionary biology, ecology and ecosystem science. However, the potential of functional traits to drive