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Linked selection and recombination rate variation drive the evolution of the genomic landscape of differentiation across the speciation continuum of Ficedula flycatchers.
TLDR
It is concluded that the heterogeneous landscape of differentiation in Ficedula flycatchers evolves mainly as the result of background selection and selective sweeps in genomic regions of low recombination, and the necessity of incorporating linked selection as a null model to identify genome regions involved in adaptation and speciation is emphasized. Expand
A sexually selected character displacement in flycatchers reinforces premating isolation
TLDR
In populations where two species coexist, it is shown that female choice selects for a divergence in male plumage colour and that the resulting character displacement reduces the frequency of hybridization. Expand
Hybridization and adaptive mate choice in flycatchers
TLDR
It is shown that, paradoxically, pairing with another species may offer the best fitness return for an individual, despite reduced fitness of hybrid offspring, and appears to represent adaptive mate choice under some circumstances. Expand
Flycatcher song in allopatry and sympatry – convergence, divergence and reinforcement
TLDR
Reinforcement has reduced the frequency of mixed singing in the pied flycatcher and caused a divergence in the song of the collared flycatchers, suggesting that mixed song may increase the rate of maladaptive hybridization. Expand
Sex Chromosome-Linked Species Recognition and Evolution of Reproductive Isolation in Flycatchers
TLDR
It is demonstrated that species recognition is inherited on the Z chromosome, which is also the known location of species-specific male plumage traits and genes causing low hybrid fitness, suggesting that the sex chromosomes may be a hotspot for adaptive speciation. Expand
Evolutionary analysis of the female-specific avian W chromosome
TLDR
A draft assembly of the non-recombining region of the collared flycatcher W chromosome is presented, containing 46 genes without evidence of female-specific functional differentiation, demonstrating evolutionary stable matrilineal inheritance of this nuclear–cytonuclear pair of chromosomes. Expand
Differential species recognition abilities of males and females in a flycatcher hybrid zone
TLDR
In two aviary experiments, the hypothesis that males and females prefer to mate conspecifically was tested and it was found that the female showed the strongest sexual response to theconspecific male and the males showed no preference for conspespecific or heterospecific female flycatchers. Expand
Sources and timing of calcium intake during reproduction in flycatchers
TLDR
The study provides the first evidence that successful reproduction of these species depends on the availability of woodlice and millipedes, each of these two components provided about 3 times more calcium than the snail shells contained in a natural nestling diet. Expand
Dynamics of a clinal hybrid zone and a comparison with island hybrid zones of flycatchers (Ficedula hypoleuca and F. albicollis)
TLDR
It is suggested that more extensive introgression in the isolated island populations has resulted in an increase in hybrid fitness by an accumulation of fertile individuals of mixed ancestry acting as bridges for gene exchange. Expand
Geographic patterns of genetic differentiation and plumage colour variation are different in the pied flycatcher (Ficedula hypoleuca)
TLDR
Differentiation in dorsal plumage colouration in pied flycatcher males greatly exceeded that observed at neutral genetic markers, which indicates that the observed pattern of phenotypic differentiation is unlikely to be solely maintained by restricted gene flow and genetic drift. Expand
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