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• W2047467497 abstract "We investigated cultural evolution in populations of common chaffinches (Fringilla coelebs) in the Atlantic islands (Azores, Madeira, Canaries) and neighboring continental regions (Morocco, Iberia) by employing a population memetics approach. To quantify variability within populations, we used the concept of a song meme, defined as a single syllable or a series of linked syllables capable of being transmitted. The frequency distribution of memes within populations generally fit a neutral model in which there is an equilibrium between mutation, migration, and drift, which suggests that memes are functionally equivalent. The diversity of memes of single syllables is significantly greater in the Azores compared to all other regions, consistent with higher population densities of chaffinches there. On the other hand, memes of two to five syllables have greater diversity in Atlantic island and Moroccan populations compared to their Iberian counterparts. This higher diversity emanates from a looser syntax and increased recombination in songs, presumably because of relaxed selection for distinctive songs in these peripheral and depauperate avifaunas. We urge comparative population memetic studies of other species of songbirds and predict that they will lead to a formulation of a general theory for the cultural evolution of bird song analogous to population genetics theory for biological traits." @default.
• W2047467497 created "2016-06-24" @default.
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• W2047467497 date "1993-04-01" @default.
• W2047467497 modified "2023-09-25" @default.
• W2047467497 title "A Population Memetics Approach to Cultural Evolution in Chaffinch Song: Meme Diversity Within Populations" @default.
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• W2047467497 doi "https://doi.org/10.1086/285493" @default.
• W2047467497 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19426000" @default.
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