It's complicated: the association between songbird extrapair paternity and within-song complexity

Hill, Samuel D.; Amiot, Christophe; Anderson, M.; Ji, Weihong

doi:10.1016/j.anbehav.2017.06.026

Cited by 10 publications

(8 citation statements)

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“…Grackles: versatility associated with polygynyShutler and Weatherhead (1990) 50 56One family: Parulinae Some analyses within generaSyllables/song, Song repertoire, Duration, Song rate, Time singing, FrequencyMonogamy/PolygynyMann–WhitneyMonogamous species had larger syllable repertoiresRead and Weary (1992) 30 142Test within superfamilies: Tyrannoidea, Corvoidea, Fringilloidea, Sylvioidea, TurdoideaSyllables/song, Song repertoire, Interval, Duration, Song rate, Continuity, VersatilityMonogamy/PolygynyBinomial Rank orderPolygyny associated with lower song rates across all species, Sylls/song positively associated with polygyny across all speciesGaramszegi and Møller (2004) 38 65Phylogenetic control—generalized least squares models via software Continuous (Pagel, 1997, 1999)Syllables/song, Song repertoire, Interval, Duration, Song rate, Continuity, VersatilityEPP (Continuous)Generalized least squares models for continuous variablesNo correlation between song characteristics and EPPSoma and Garamszegi (2011) 23 26, 24None (for these data)“Complexity” term encompassing syllable repertoire, song repertoire, and song versatilityEPP (3 groups); Monogamy, Fac. Polygyny, PolygynyMeta-regression analysisNo significant correlation between song complexity and EPP or mating systemHill et al (2017) 39 78Phylogenetic control—PGLS analysisSyllable repertoire, Syllables/song, Song repertoire, Duration, Versatility, Syll. transitions/song, Within-song complexityEPP (continuous); Monogamy/“Polygamy”/CooperativeLinear regressionSyllables per song (unique), syllable transitions per song, overall within-song complexity positively correlated with EPPCurrent study890Phylogenetic controlSyllable repertoire ( N = 120), Syllables/song ( N = 178), Song repertoire ( N = 225), Interval ( N = 131), Duration ( N = 241), Song rate ( N = 126), Continuity ( N = 126)EPP (Low/High) ( N = 142); Monogamy/Polygyny ( N = 764)PhylANOVA, Brownie, BayesTraits, PGLS, GLMM (see Methods)Syllable repertoire and song duration evolve faster in polygynous species; Syllable repertoire is smaller in species with high EPPDefinitions of song terms tested in this study are provided in Table 2.…”

Section: Introductionmentioning

confidence: 99%

Polygyny is linked to accelerated birdsong evolution but not to larger song repertoires

Snyder

Creanza

2019

Nat Commun

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Non-monogamous mating behaviors including polygyny or extra-pair paternity are theorized to amplify sexual selection, since some males attract multiple mates or copulate with paired females. In several well-studied songbird species, females prefer more complex songs and larger repertoires; thus, non-monogamous mating behaviors are predicted to accelerate song evolution, particularly toward increased complexity. However, studies within songbird clades have yielded mixed results, and the effect of non-monogamy on song evolution remains unclear. Here, we construct a large-scale database synthesizing mating system, extra-pair paternity, and song information and perform comparative analyses alongside songbird genetic phylogenies. Our results suggest that polygyny drives faster evolution of syllable repertoire size (measured as average number of unique syllables), but this rapid evolution does not produce larger repertoires in polygynous species. Instead, both large and small syllable repertoires quickly evolve toward moderate sizes in polygynous lineages. Contrary to expectation, high rates of extra-pair paternity coincide with smaller repertoires.

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Section: Introductionmentioning

confidence: 99%

Polygyny is linked to accelerated birdsong evolution but not to larger song repertoires

Snyder

Creanza

2019

Nat Commun

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“…Although our results might lend support to this latter hypothesis, we are hesitant to draw strong conclusions due to the number of potential co‐varying factors. For example, it may be that both variables are increased by a shared factor not considered here (for example extra‐pair paternity, Hill et al ). This relationship, therefore, introduces questions for future research to explore.…”

Section: Discussionmentioning

confidence: 99%

Identifying ecological drivers of interspecific variation in song complexity in songbirds (Passeriformes, Passeri)

Crouch

Mason‐Gamer

2019

Journal of Avian Biology

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A diversity of selective pressures and stochastic processes have likely created substantial variation in song structure, creating difficulties in quantifying the influence of specific ecological factors. This problem is further compounded by differences in study taxa and methods of data analysis between studies. Large comparative studies offer the potential to mitigate some of these methodological difficulties by maximizing the power of statistical analyses and minimizing the probability of misidentifying the magnitude and direction of relationships between independent and dependent variables. In this study, we quantified song complexity for 367 species of globally distributed songbirds (Passeriformes, Passeri). We quantified eight individual acoustic variables that have previously been linked to audio complexity which we analyzed independently, and after applying multivariate statistics to the variables. We used Bayesian linear mixed effect models to test multiple hypotheses regarding song complexity: that it should be greater in open habitats, in migratory species, for sexually monomorphic species, at higher latitudes and altitudes, and that it should co‐vary with clutch size characteristics. Our results challenge perceptions of the effect of habitat structure on song complexity; for instance, counter to expectation, we found songs in closed environments to have reduced syllable diversity. Additionally, our results suggest song complexity may not be ubiquitously a means of communicating male quality, with no significant difference between recordings from monomorphic and dimorphic species. By estimating song complexity in multiple ways, and quantifying these over large taxonomic and spatial scales, we are able to gain a more nuanced understanding of how song complexity is potentially affected by a range of biotic and abiotic factors. Our results also suggest that caution is required when making generalized statements about the relative influence of different factors on song complexity; more densely‐sampled, group‐specific studies are necessary complements to this taxonomically broad analysis.

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“…Average strophe duration is a parameter of strophe versatility, an aspect of song complexity known as 'within-song' complexity (Leitão et al 2006). It has been proposed that within-song complexity variables are more closely associated with male-male communication (Hill et al 2017). Duller males usually face less competition from darker males, possibly because they more closely resemble females (Drost 1936), and this may reduce the risk of conflict with better-quality conspecifics (Slagsvold & Lifjeld 1992;Slagsvold & Saetre 1991).…”

Section: Discussionmentioning

confidence: 99%

“…Song complexity can be defined by different measurements, where the variables that make up song complexity is dependent on the researcher (Boogert et al 2008;Garamszegi et al 2006;Hill et al 2017). An example of a measurement of song complexity is repertoire size, which in some cases, is defined as the number of different syllables in a song (Espmark & Lampe 1993;Searcy & Andersson 1986).…”

Section: Introductionmentioning

confidence: 99%

The role of arrival time to the breeding grounds in the song development of juvenile pied flycatchers

Fong

Labra

Lampe

2019

J Ethol

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Male birdsongs function as territory defence and/or mate attraction. Females may use different song characteristics in choosing a male, such as a song's complexity. Such is the case for the open-ended learning pied flycatcher (Ficedula hypoleuca), in which males are able to learn new syllables and increase their song complexity even as adults. There are many male characteristics that tend to correlate with song complexity, including arrival time (early vs. late), age of the male (juvenile vs. adult), and the plumage colour (darker-higher quality vs. duller-lower quality), but it has yet to be assessed what effect arrival time has on the song development of juvenile pied flycatchers. This study modelled how arrival time and male quality (plumage colour used as a proxy) affects song complexity, measured by repertoire size, strophe versatility, and song versatility of pied flycatchers when they were 1-year old and 2-years old. The average strophe duration, a strophe versatility parameter, was also included. Age of the pied flycatcher best explained the development of repertoire size and strophe versatility, whereas the development of song versatility was best explained by age, male quality, and arrival time. Arrival time best explained the development of strophe duration. Although it is supported that age affects song development the most, there is a trend that earlier arriving males that are of higher quality have a more complex song than late arriving, lower quality males.IV

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It's complicated: the association between songbird extrapair paternity and within-song complexity

Cited by 10 publications

References 83 publications

Polygyny is linked to accelerated birdsong evolution but not to larger song repertoires

Polygyny is linked to accelerated birdsong evolution but not to larger song repertoires

Identifying ecological drivers of interspecific variation in song complexity in songbirds (Passeriformes, Passeri)

The role of arrival time to the breeding grounds in the song development of juvenile pied flycatchers

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