Song dialects do not restrict gene flow in an urban population of the orange-tufted sunbird, Nectarinia osea

Leader, Noam; Geffen, Eli; Mokady, Ofer; Yom‐Tov, Yoram

doi:10.1007/s00265-008-0558-8

Cited by 25 publications

(19 citation statements)

References 36 publications

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“…The relationship between gene flow and geographic variation in song in NI saddlebacks in particular, and in songbirds in general, remains unclear. Although some studies have found a correlation between song dialects and restricted gene flow (Irwin et al 2001; MacDougall‐Shackleton and MacDougall‐Shackleton 2001) others have not (Soha et al 2004; Nicholls et al 2006; Leader et al 2008). NI saddlebacks are an important model because with the exception of two of the 13 islands there is no natural dispersal between any of the populations.…”

Section: Discussionmentioning

confidence: 99%

Contemporary Cultural Evolution of a Conspecific Recognition Signal Following Serial Translocations

Parker¹,

Hauber²,

Brunton³

2010

Evolution

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The divergence of conspecific recognition signals (CRS) among isolated populations facilitateshave generated interisland divergence of male rhythmical song (MRS), a culturally transmitted CRS. We conducted an experimental test of behavioral discrimination in NI saddlebacks exposed to familiar and unfamiliar MRS and found that responses were significantly stronger for familiar MRS, consistent with a model of contemporary cultural evolution leading to discrimination between geographic song variants. Significantly, this result demonstrates the rapid tempo with which discrimination of CRS might evolve within isolated populations and supports both bottleneck and cultural mutation hypotheses in CRS evolution. The evolutionary implications of contemporary cultural evolution in the production and perception of CRS merit debate on the time frames over which conservation management is evaluated.

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Section: Discussionmentioning

confidence: 99%

Contemporary Cultural Evolution of a Conspecific Recognition Signal Following Serial Translocations

Parker¹,

Hauber²,

Brunton³

2010

Evolution

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“…; Leader et al . ; Ortiz‐Ramírez et al . ), nor for nonoscines in which vocal learning evolved independently (e.g.…”

Section: Introductionmentioning

confidence: 99%

Behavioural response to song and genetic divergence in two subspecies of white‐crowned sparrows (Zonotrichia leucophrys)

et al. 2017

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Divergence in sexual signals may drive reproductive isolation between lineages, but behavioural barriers can weaken in contact zones. Here, we investigate the role of song as a behavioural and genetic barrier in a contact zone between two subspecies of white-crowned sparrows (Zonotrichia leucophrys). We employed a reduced genomic data set to assess population structure and infer the history underlying divergence, gene flow and hybridization. We also measured divergence in song and tested behavioural responses to song using playback experiments within and outside the contact zone. We found that the subspecies form distinct genetic clusters, and demographic inference supported a model of secondary contact. Song phenotype, particularly length of the first note (a whistle), was a significant predictor of genetic subspecies identity and genetic distance along the hybrid zone, suggesting a close link between song and genetic divergence in this system. Individuals from both parental and admixed localities responded significantly more strongly to their own song than to the other subspecies song, supporting song as a behavioural barrier. Putative parental and admixed individuals were not significantly different in their strength of discrimination between own and other songs; however, individuals from admixed localities tended to discriminate less strongly, and this difference in discrimination strength was explained by song dissimilarity as well as genetic distance. Therefore, we find that song acts as a reproductive isolating mechanism that is potentially weakening in a contact zone between the subspecies. Our findings also support the hypothesis that intraspecific song variation can reduce gene flow between populations.

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“…Previous studies have also suggested that acoustic patterns reflect vicariance or historical genetic patterns (González et al ., ; Sosa‐López & Mennill, ). Similar to other studies, our results indicate that mtDNA genetic patterns were not linked with acoustic variation (Wright & Wilkinson, ; Leader et al ., ; Ribot et al ., ). This result is not surprising for males, given that mtDNA is maternally inherited and therefore reflects the movement of matrilineal lines historically.…”

Section: Discussionmentioning

confidence: 97%

“…Both acoustic variation and genetic variation exhibit an isolation‐by‐distance pattern (Graham, ), however, when we controlled for geographic distance in our analyses, genetic distance explained relatively little variation in acoustic patterns. This result is not surprising given that there is little evidence to suggest that genetic drift and acoustic variation are linked in animals that exhibit vocal learning (Soha et al ., ; Wright et al ., ; Leader et al ., ; Yoktan et al ., ; Ortiz‐Ramírez et al ., ; but see Baker et al ., ; MacDougall‐Shackleton & MacDougall‐Shackleton, ). Previous studies have also suggested that acoustic patterns reflect vicariance or historical genetic patterns (González et al ., ; Sosa‐López & Mennill, ).…”

Section: Discussionmentioning

confidence: 99%

“…Although links between population structure (examined using neutral markers) and acoustic divergence have been demonstrated in animals that do not learn their acoustic signals (e.g. Isler et al ., ; Campbell et al ., ), there is little evidence to suggest that neutral genetic divergence and acoustic variation are linked in animals that learn their acoustic signals (Soha et al ., ; Wright et al ., ; Leader et al ., ; Yoktan et al ., ; Ortiz‐Ramírez et al ., ; but see Baker et al ., ; MacDougall‐Shackleton & MacDougall‐Shackleton, ).…”

Section: Introductionmentioning

confidence: 99%

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Parallel evolutionary forces influence the evolution of male and female songs in a tropical songbird

Graham

Heath

Walter

et al. 2018

J of Evolutionary Biology

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Given the important role that animal vocalizations play in mate attraction and resource defence, acoustic signals are expected to play a significant role in speciation. Most studies, however, have focused on the acoustic traits of male animals living in the temperate zone. In contrast to temperate environments, in the tropics, it is commonplace for both sexes to produce complex acoustic signals. Therefore, tropical birds offer the opportunity to compare the sexes and provide a more comprehensive understanding of the evolution of animal signals. In this study, we quantified patterns of acoustic variation in Rufous-and-white Wrens (Thryophilus rufalbus) from five populations in Central America. We quantified similarities and differences between male and female songs by comparing the role that acoustic adaptation, cultural isolation and neutral genetic divergence have played in shaping acoustic divergence. We found that males and females showed considerable acoustic variation across populations, although females exhibited greater population divergence than males. Redundancy analysis and partial-redundancy analysis revealed significant relationships between acoustic variation and ecological variables, genetic distance, and geographic distance. Both ambient background noise and geographic distance explained a high proportion of variance for both males and females, suggesting that both acoustic adaptation and cultural isolation influence song. Overall, our results indicate that parallel evolutionary forces act on male and female acoustic signals and highlight the important role that cultural drift and selection play in the evolution of both male and female songs.

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Song dialects do not restrict gene flow in an urban population of the orange-tufted sunbird, Nectarinia osea

Cited by 25 publications

References 36 publications

Contemporary Cultural Evolution of a Conspecific Recognition Signal Following Serial Translocations

Contemporary Cultural Evolution of a Conspecific Recognition Signal Following Serial Translocations

Behavioural response to song and genetic divergence in two subspecies of white‐crowned sparrows (Zonotrichia leucophrys)

Parallel evolutionary forces influence the evolution of male and female songs in a tropical songbird

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