Migration, mitochondria, and the yellow-rumped warbler

David P.L. Toews, Milica Mandic, Jeffrey G. Richards, Darren E. Irwin

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Discordance between mitochondrial and nuclear DNA has been noted in many systems. Asymmetric introgression of mitochondria is a common cause of such discordances, although in most cases the drivers of introgression are unknown. In the yellow-rumped warbler, evidence suggests that mtDNA from the eastern, myrtle warbler, has introgressed across much of the range of the western form, the Audubon's warbler. Within the southwestern United States myrtle mtDNA comes into contact with another clade that occurs in the Mexican black-fronted warbler. Both northern forms exhibit seasonal migration, whereas black-fronted warblers are nonmigratory. We investigated the link between mitochondrial introgression, mitochondrial function, and migration using novel genetic, isotopic, biochemical, and phenotypic data obtained from populations in the transition zone. Isotopes suggest the zone is coincident with a shift in migration, with individuals in the south being resident and populations further north becoming increasingly more migratory. Mitochondrial respiration in flight muscles demonstrates that myrtle-type individuals have a significantly greater acceptor control ratio of mitochondria, suggesting it may be more metabolically efficient. To our knowledge this is the first time this type of intraspecific variation in mitochondrial respiration has been measured in wild birds and we discuss how such mitochondrial adaptations may have facilitated introgression.

Original languageEnglish (US)
Pages (from-to)241-255
Number of pages15
JournalEvolution
Volume68
Issue number1
DOIs
StatePublished - Jan 1 2014

Fingerprint

Songbirds
introgression
mitochondrion
Myrtus communis
Myrtus
Mitochondria
mitochondria
mitochondrial DNA
Mitochondrial DNA
breathing
respiration
Respiration
flight muscles
Southwestern United States
intraspecific variation
wild birds
migratory behavior
nuclear genome
transition zone
isotopes

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Agricultural and Biological Sciences(all)

Cite this

Toews, D. P. L., Mandic, M., Richards, J. G., & Irwin, D. E. (2014). Migration, mitochondria, and the yellow-rumped warbler. Evolution, 68(1), 241-255. https://doi.org/10.1111/evo.12260
Toews, David P.L. ; Mandic, Milica ; Richards, Jeffrey G. ; Irwin, Darren E. / Migration, mitochondria, and the yellow-rumped warbler. In: Evolution. 2014 ; Vol. 68, No. 1. pp. 241-255.
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Toews, DPL, Mandic, M, Richards, JG & Irwin, DE 2014, 'Migration, mitochondria, and the yellow-rumped warbler', Evolution, vol. 68, no. 1, pp. 241-255. https://doi.org/10.1111/evo.12260

Migration, mitochondria, and the yellow-rumped warbler. / Toews, David P.L.; Mandic, Milica; Richards, Jeffrey G.; Irwin, Darren E.

In: Evolution, Vol. 68, No. 1, 01.01.2014, p. 241-255.

Research output: Contribution to journalArticle

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