uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Song similarity predicts hybridization in flycatchers
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolution, Genomics and Systematics, Evolutionary Biology.
Show others and affiliations
2006 (English)In: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 19, no 4, 1202-1209 p.Article in journal (Refereed) Published
Abstract [en]

Given that population divergence in sexual signals is an important prerequisite for reproductive isolation, a key prediction is that cases of signal convergence should lead to hybridization. However, empirical studies that quantitatively demonstrate links between phenotypic characters of individuals and their likelihood to hybridize are rare. Here we show that song convergence between sympatric pied (Ficedula hypoleuca) and collared flycatchers (F. albicollis) influence social and sexual interactions between the two species. In sympatry, the majority of male pied flycatchers (65%) include various parts of collared flycatcher song in their song repertoire (but not vice versa). Playback experiments on male interactions demonstrate that male collared flycatchers respond similarly to this 'mixed' song as to conspecific song. Long-term data on pairing patterns show that males singing a converged song attract females of the other species: female collared flycatchers only pair with male pied flycatchers if the males sing the mixed song type. From the perspective of a male pied flycatcher, singing a mixed song type is associated with 30% likelihood of hybridization. This result, combined with our estimates of the frequency of mixed singers, accurately predicts the observed occurrence of hybridization among male pied flycatchers in our study populations (20.45% of 484 pairs; predicted 19.5%). Our results support the suggestion that song functions as the most important prezygotic isolation mechanism in many birds.

Place, publisher, year, edition, pages
2006. Vol. 19, no 4, 1202-1209 p.
Keyword [en]
bird song, convergence, flycatcher, hybrid zone, learning, reinforcement, sexual selection, speciation, species recognition
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-155846DOI: 10.1111/j.1420-9101.2006.01140.xISI: 000239154100019OAI: oai:DiVA.org:uu-155846DiVA: diva2:431203
Available from: 2011-07-18 Created: 2011-07-01 Last updated: 2011-07-18Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Animal EcologyEvolutionary Biology
In the same journal
Journal of Evolutionary Biology
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 206 hits
ReferencesLink to record
Permanent link

Direct link