J. Roberto Sosa-Lopez

J. Roberto Sosa-Lopez
Instituto Politécnico Nacional | IPN · Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Oaxaca (CIIDIR)

Ph.D. in Biological Sciences

About

26
Publications
6,307
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191
Citations
Introduction
My research interest lies in evolution, animal communication and animal behaviour. Among this subjects, my main focus is to understand processes underlying vocal variation within and between species. To understand such processes I focus in the Troglodytes Wrens. This taxon has several features that make it an excellent group for studying song evolution. For example, they inhabit a variety of vegetation types (e.g. mountain vs. lowland species) and some populations are restricted to islands.
Additional affiliations
January 2009 - June 2014
University of Windsor
Position
  • PhD Student, Postodtoral Fellow

Publications

Publications (26)
Article
Full-text available
Empirical descriptions of vocal behaviour are important for understanding avian biology. In this study, we provide the first detailed analysis of the vocal behaviour of the Brown-throated Wren (Troglodytes brunneicollis), a neotropical songbird found in oak forests in the highlands of Mexico and the southwestern United States. We quantify the fine...
Article
Full-text available
Phenotypic traits are important for assessing differences between populations, especially in groups with poorly resolved taxonomy. One such group, the House Wren complex, presents extensive taxonomic controversy and is thought to comprise many independent evolutionary units. Although the songs and morphological features of House Wrens (Troglodytes...
Article
Full-text available
Documenting the diversity of vocal behaviour across different avian taxa is key to understanding the ecology and evolution of complex behaviours. Unique to Cozumel Island in the Mexican Caribbean Sea, the Cozumel Wren (Troglodytes aedon beani) provides an opportunity to investigate how isolation influences complex cultural traits. Most aspects of t...
Article
Full-text available
We studied patterns of geographic variation in the fine structural characteristics of the songs of five recognized subspecies of Common Bush Tanagers (Chlorospingus ophthalmicus) in Mesoamerica to examine whether songs vary with geography. Multivariate analyses (PCA and DFA), based on 11 fine structural characteristics of the songs provided similar...
Article
Speciation may be influenced by geographic variation in animal signals, particularly when those signals are important in reproductive decisions. Here, we describe patterns of geographic variation in the song of rufous-naped wrens Campylorhynchus rufinucha. This species complex is a morphologically variable taxon confined to tropical dry forest area...
Article
Studies of geographic variation of bird vocalizations facilitate the understanding of species' divergence and evolutionary histories, as vocal traits vary in response to different factors including the environment, morphology, culture, and inheritance. The Acorn Woodpecker (Melanerpes formicivorus) is a non-passerine species of the family Picidae,...
Article
Diverse evolutionary forces have promoted the great diversity of vocal behaviour found in birds. The description of such behaviour is crucial for understanding both selective and non-selective pressures shaping acoustic signals in birds and their role in ecological and evolutionary processes. Here, we describe the vocal behaviour of the Sclater’s W...
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Full-text available
Animal communication has long been thought to be subject to pressures and constraints associated with social relationships. However, our understanding of how the nature and quality of social relationships relates to the use and evolution of communication is limited by a lack of directly comparable methods across multiple levels of analysis. Here, w...
Article
Birdsongs are signals that encode information for multiple behaviours such as species recognition. Species recognition is influenced by both geographical variation in song and birds' discrimination abilities, forming the basis for evolutionary processes driving reproductive isolation and speciation. Here, we assessed the behavioural responses to ge...
Article
In this study we focused on urban bird diversity across Mexico, a megadiverse country, with a special focus on the relative role of urban greenspaces and heavily-built sites. We considered a country-wide approach, including 24 different sized Mexican cities. Our aims were to describe the urban bird diversity in focal cities and further assess the r...
Article
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Background Among urban stimuli, anthropogenic noise has been identified to be one of the behavioral drivers of species that rely on acoustic signals for communication. Studies have shown both species-specific and assemblage responses to urban noise, ranging from the modulation of their acoustic frequencies and spatiotemporal adjustments to declines...
Article
The biodiversity of the Neotropics is considerable, but it is likely underestimated owing to gaps in sampling effort and a focus on using morphological features of animals to determine species differences rather than divergence in their mating signals and behavior. Recent multi-trait analyses incorporating morphological, plumage, and vocal data hav...
Article
Full-text available
Background: Cities differ from non-urban environments by the intensity, scale, and extent of anthropogenic pressures, which can drive the occurrence, physiology, and behavior of the organisms thriving in these settings. Traits as green cover often predict the occurrence patterns of bird species in urban areas. Yet, anthropogenic noise and artificia...
Article
Acoustic signals used in animal communication play a key role in mate attraction, species recognition, and territory defense. Variation in acoustic signals may reflect population structure, lack of gene flow, and phylogenetic relationships. In birds, the study of geographic variation in acoustic signals has been useful for elucidating potential fac...
Article
Full-text available
Phenotypic traits such as songs are important in species recognition. Variation in acoustic traits can form barriers to gene flow and promote speciation. Therefore, understanding song divergence is crucial in groups with controversial taxonomy such as Olive Sparrows (Arremonops rufivirgatus), a widespread Neotropical species of songbird with multip...
Article
Living in the city represents a great challenge for organisms that are exposed to the novel environmental conditions inherent to urbanization. Recent studies have highlighted the ecological impact that urbanization poses on the acoustic phenotype and singing routines of birds. However, the organization and structure of avian dawn choruses in urban...
Article
When animal mating signals diverge between populations, reproductive isolation and speciation may occur. Variation in animals' responses to these signals may reveal whether differences in perception contribute to behavioural differences between populations. We tested whether signal divergence influences receiver responses to playback in the rufous-...
Article
Full-text available
Nonhuman primates’ vocal repertoire has shown little plasticity, with immatures producing adult-like acoustic structures. Yet, the use of different call types shows a degree of socially dependent flexibility during development. In several nonhuman primate species, group members exchange contact calls respecting a set of social and temporal rules th...
Article
Interspecific territoriality is frequently reported between closely related species; however, few studies have demonstrated interspecific territoriality between distantly related species living in sympatry. We conducted playback experiments to investigate territorial behaviour in male and female White-bellied Wrens (Uropsila leucogastra) in respons...
Article
The Horned Guan (Oreophasis derbianus) is a cracid restricted to cloud forests in the Sierra Madre of Chiapas in Mexico and the westerncentral Mountains in Guatemala. It is an endangered species and urgent conservation measures are required, such as non-invasive monitoring techniques. Here, we study individual features in the boom calls of Horned G...
Article
We addressed the role of nocturnal singing in the diurnal field sparrow, Spizella pusilla. We were particularly interested in whether nocturnal song is used to repel intruders (intrasexual function) and/or to attract females seeking extrapair copulations (intersexual function). First, we used autonomous acoustic recording units (ARUs) and an automa...
Article
Full-text available
Animals use acoustic signals to defend resources against rivals and attract breeding partners. As with many biological traits, acoustic signals may reflect ancestry; closely related species often produce more similar signals than do distantly related species. Whether this similarity in acoustic signals is biologically relevant to animals is poorly...
Article
Full-text available
Here, we provide the first comprehensive and quantitative description of the nests, eggs, and parental behavior of this endemic and vulnerable songbird.

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