A population memetics approach to cultural evolution in chaffinch song: meme diversity within populations
Article Abstract:
A study of cultural evolution in populations of common chaffinches (Fringilla coelebs) using a population memetics approach is reported. Variability within populations was quantified using the concept of the song meme, which is a single syllable or a series of linked syllables capable of being transmitted. The relationship between meme diversity and population densities in three Atlantic islands and nearby continental regions were determined. Population memetics studies could be useful in formulating a general theory that will relate cultural evolution with population genetics theory.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1993
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Nest placement relative to food and its influence on the evolution of avian coloniality
Article Abstract:
A model explaining the travel behavior of animals in relation to resource availability, is used to determine avian coloniality. Using this model, the nesting behavior of cliff swallows, Hirundo pyrrhonota, is examined. However, two assumptions of the model on boundaries of foraging and distribution of possible nesting sites fail to explain the coloniality of the cliff swallows. Since the assumptions in the geometrical model are not applicable to all natural populations, they cannot be used to explain avian coloniality.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
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On the determinants of extinction
Article Abstract:
The determinants of the probability of extinction are defined by analyzing environmental factors in relation with species characteristics. The extinction of bird species from the islands surrounding Britain is determined using Cox regression analysis. The factors of body size, population size and island attributes are found to be inter-correlated. Extinction risk for small populations of small-bodied birds on oceanic islands is greater than that for large populations of large-bodied birds in protected islands.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
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