Asymmetric behavioural responses to divergent vocal signals in allopatric Neotropical sparrows

Fernández-Gómez, Ronald A.; Morales‐Mávil, Jorge É.; Salazar, Laura Teresa Hernández; Sosa‐López, J. Roberto

doi:10.1016/j.anbehav.2021.01.018

Cited by 3 publications

(3 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternatively, one could attribute this result to the unstandardized and variable playback procedures between recordists. Playback procedures may have varied in many ways, including stimulus location, acoustic quality, duration, and amplitude, and bird identity and its attributes; all of these factors may affect vocal response to the playback [38,71,72]. For example, recordists may stop broadcasting the stimulus as the birds approach them, which may lead to low or no vocal response.…”

Section: Discussionmentioning

confidence: 99%

“…These limitations may add substantial noise to the analysis, which means the occurrence of differences between spontaneous songs and songs produced in response to playback may be a strong indication that this pattern would be found in wild birds subjected to a standardized playback experiment. The advantages of using acoustic data repositories reside in the increased possibility of gaining insights into whether vocal responses to playback vary with population identity [38], population density [39], species [40], space [41], and time [42]. The research effort required to sample multiple populations or species over a wide range of time or places makes it challenging to carry out this task in the field.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Using Acoustic Data Repositories to Study Vocal Responses to Playback in a Neotropical Songbird

Guimarães

Oliveira

et al. 2023

Birds

View full text Add to dashboard Cite

Birds may alter song structure in response to territorial challenges to convey information about aggressive intent or fighting ability. Professional and amateur ornithologists upload daily many birdsong recordings into acoustic data repositories, usually scoring whether songs were recorded in response to a conspecific playback or produced spontaneously. We analyzed recordings from these repositories to evaluate if song traits of Rufous-browed Peppershrikes (Cyclarhis gujanensis) vary between playback-elicited songs and spontaneous songs. For each recording after playback, we chose one spatially closer spontaneous recording to avoid geographic bias. Birds recorded after playback produced slightly longer songs than birds that were singing spontaneously. This result was accounted for by increases in the amount of sound and silence within a song after the playback instead of changes in the mean number or duration of elements. Playback did not alter song frequency parameters (bandwidth, minimum, mean, and maximum frequencies) or song rate. These results indicate that song duration might mediate aggressive interactions in Rufous-browed Peppershrikes. Even considering limitations such as unknown playback stimulus identity and possible pseudoreplication, acoustic data repositories give a unique yet unexplored opportunity to gather insights into the evolution of song flexibility during aggressive encounters.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using Acoustic Data Repositories to Study Vocal Responses to Playback in a Neotropical Songbird

Guimarães

Oliveira

et al. 2023

Birds

View full text Add to dashboard Cite

show abstract

“…2016, Fernández‐Gómez et al. 2021). Although 11 trials is more than the number used in some previous playback studies, the within‐subjects design provides a powerful test of treatment effects because intermale variability in responsiveness can be accounted for statistically (Akçay and Campbell 2014).…”

Section: Methodsmentioning

confidence: 97%

Territorial responses of male Bermuda White‐eyed Vireos (Vireo griseussubsp.bermudianus) reflect phylogenetic similarity of intruders and acoustic similarity of their songs

2021

View full text Add to dashboard Cite

For signal divergence to drive speciation, receivers should perceive structural differences in divergent signals; similar-structured signals from closer relatives are expected to elicit stronger responses than dissimilar signals from distant relatives. Two mechanisms can affect receiver responses to passerine song: (1) sympatric song familiarity and (2) an innate auditory template used to assess acoustic similarity. We examined the role of acoustic similarity by comparing behavioral responses of male Bermuda White-eyed Vireos (Vireo griseus bermudianus) to playback of the songs of allopatric species from across the family Vireonidae. Phylogenetic distance between the focal and stimulus species predicted response strength. Males uttered fewer vocalizations, had fewer speaker flyovers, and remained farther from the speaker during playback of the songs of more distantly related vireos. We then tested whether structural similarity of playback songs, as defined by three phylogenetically conserved song traits, explained these relationships. As predicted, males uttered fewer vocalizations, had fewer speaker flyovers, and remained farther from the speaker in response to more dissimilar songs. Collectively, our results suggest that male Bermuda Vireos perceive and respond to interspecies variation in the phylogenetically conserved song traits of allopatric species of vireos. This suggests that song divergence, and the ability to distinguish divergent songs, reinforces reproductive isolation and competitor exclusion.

show abstract

Familiarity and homogeneity affect the discrimination of a song dialect

Williams,

Dobney,

Robins

et al. 2024

Animal Behaviour

View full text Add to dashboard Cite

Asymmetric behavioural responses to divergent vocal signals in allopatric Neotropical sparrows

Cited by 3 publications

References 48 publications

Using Acoustic Data Repositories to Study Vocal Responses to Playback in a Neotropical Songbird

Using Acoustic Data Repositories to Study Vocal Responses to Playback in a Neotropical Songbird

Territorial responses of male Bermuda White‐eyed Vireos (Vireo griseussubsp.bermudianus) reflect phylogenetic similarity of intruders and acoustic similarity of their songs

Familiarity and homogeneity affect the discrimination of a song dialect

Contact Info

Product

Resources

About