Long-distance gene flow in a cooperative breeder detected in genealogies of mitochondrial DNA sequences

Proceedings. Biological Sciences
S V Edwards

Abstract

Rates of gene flow among populations of cooperatively breeding birds have been inferred primarily from distributions of observed distances of dispersal from birthplace to place of first breeding. However, for most cooperative breeders, characteristics of geographic population structure and extent of realized gene flow as measured by genetic markers are not known. To estimate rates of gene flow in a cooperatively breeding bird, I conducted a continent-wide survey of DNA sequence diversity in the most variable part of the mitochondrial (mt) genome among 163 grey-crowned babblers (Pomatostomus temporalis) throughout Australia and Papua New Guinea. The variability found among 86 types of mtDNA was used to infer genealogical trees relating sequences within both eastern (P. t. temporalis) and western (P. t. rubeculus) babblers. The genealogies imply low but detectable levels of gene flow between populations separated by over 1000 km. In addition, they suggest that genes from unrelated migrants contribute to genetic diversity in 5 of 50 (10%) social groups, occasionally producing large (> 3%) intragroup sequence differences. However, on average, the fraction of sequence diversity apportioned among populations (Fst) and among social gr...Continue Reading

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Citations

Dec 1, 1996·Trends in Ecology & Evolution·W D KoenigP N Hooge
Jul 25, 2008·Genetica·Patrícia H Brito, Scott V Edwards
Nov 3, 2005·Evolution; International Journal of Organic Evolution·W Bryan Jennings, Scott V Edwards
Dec 18, 2008·Evolution; International Journal of Organic Evolution·June Y Lee, Scott V Edwards
Jul 20, 2016·Proceedings of the National Academy of Sciences of the United States of America·Scott V EdwardsCraig Moritz
Feb 27, 2007·Molecular Phylogenetics and Evolution·Jeremy J Kirchman, James D Franklin
Jul 1, 2017·Molecular Ecology·Flavia Termignoni-GarcíaPatricia Escalante-Pliego
Jan 16, 2018·Molecular Ecology·Annika Mae LambAlexandra Pavlova
Jun 29, 2001·Proceedings. Biological Sciences·L F KellerM W Bruford
Apr 1, 1996·Evolution; International Journal of Organic Evolution·V L FriesenW S Davidson
Jan 10, 2020·Molecular Ecology·Staffan Bensch
Feb 1, 1999·Evolution; International Journal of Organic Evolution·W Owen McMillanStephen R Palumbi
May 19, 2021·Proceedings of the National Academy of Sciences of the United States of America·Tinsley H Davis

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