Song discrimination by nestling collared flycatchers during early development
2016 (English)In: Biology Letters, ISSN 1744-9561, E-ISSN 1744-957X, Vol. 12, no 7, 20160234Article in journal (Refereed) Published
Pre-zygotic isolation is often maintained by species-specific signals and preferences. However, in species where signals are learnt, as in songbirds, learning errors can lead to costly hybridization. Song discrimination expressed during early developmental stages may ensure selective learning later in life but can be difficult to demonstrate before behavioural responses are obvious. Here, we use a novel method, measuring changes in metabolic rate, to detect song perception and discrimination in collared flycatcher embryos and nestlings. We found that nestlings as early as 7 days old respond to song with increased metabolic rate, and, by 9 days old, have increased metabolic rate when listening to conspecific when compared with heterospecific song. This early discrimination between songs probably leads to fewer heterospecific matings, and thus higher fitness of collared flycatchers living in sympatty with closely related species.
Place, publisher, year, edition, pages
2016. Vol. 12, no 7, 20160234
species recognition, song, metabolic rate, Ficedula flycatcher
IdentifiersURN: urn:nbn:se:uu:diva-303751DOI: 10.1098/rsbl.2016.0234ISI: 000382423700005OAI: oai:DiVA.org:uu-303751DiVA: diva2:973866
FunderSwedish Research Council