Heterospecific female mimicry in Ficedula flycatchers

S. Calhim, P. Adamik, P. Järvistö, P. Leskinen, J. Török, K. Wakamatsu, T. Laaksonen

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Mimicry is a widespread phenomenon. Vertebrate visual mimicry often operates in an intraspecific sexual context, with some males resembling conspecific females. Pied flycatcher (Ficedula hypoleuca) dorsal plumage varies from the ancestral black to female-like brown. Experimental studies have shown that conspecific and heterospecific (collared flycatcher, F. albicollis) individuals of both sexes respond, at least initially, to brown individuals as if they were female. We quantified the perceptual and biochemical differences between brown feathers and found that brown pied flycatcher males are indistinguishable from heterospecific, but not from conspecific, females in both aspects. To our knowledge, this is the first evidence of a visual mimetic signalling system in a sexual context where the model is heterospecific to the mimic. By only mimicking heterospecific females, brown pied flycatcher males can establish territories next to the more dominant collared flycatcher in sympatry, suffer less aggression by darker conspecifics in allopatry and preserve within-species sexual recognition throughout the breeding range. A closer look at the evolutionary history and ecology of these two species illustrates how such a mimetic system can evolve. Although likely rare, this phenomenon might not be unique to Ficedula flycatchers.

Original languageEnglish
Pages (from-to)660-666
Number of pages7
JournalJournal of Evolutionary Biology
Volume27
Issue number3
DOIs
Publication statusPublished - Mar 1 2014

    Fingerprint

Keywords

  • Melanin
  • Sexual mimicry
  • Structural colour
  • Sympatric speciation
  • Visual signals

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Calhim, S., Adamik, P., Järvistö, P., Leskinen, P., Török, J., Wakamatsu, K., & Laaksonen, T. (2014). Heterospecific female mimicry in Ficedula flycatchers. Journal of Evolutionary Biology, 27(3), 660-666. https://doi.org/10.1111/jeb.12328