Migration through surnames in Campobasso Province, Italy
G Biondi1, P Raspe, C G Mascie-Taylor
1Dipartimento di Biologia animale e dell'uomo, Università di Torino, Italy.
Journal of Biosocial Science
|April 4, 2001
Summary
Grandparental surname data from Italy revealed surname distribution fits Fisher
Area of Science:
- Population genetics
- Anthropology
- Demography
Background:
- Understanding population structure and migration patterns is crucial in genetics and anthropology.
- Surname distribution can serve as a proxy for genetic relatedness and historical population movements.
Purpose of the Study:
- To analyze grandparental surname distribution in Campobasso Province, Italy.
- To apply Fisher's logarithmic distribution to model surname frequencies.
- To investigate sex-based differences in mobility using surname data.
Main Methods:
- Collected grandparental surname data from schoolchildren across 22 communes in Campobasso.
- Utilized log2-log2 transformation to assess surname distribution linearity.
- Fitted the data to Fisher's logarithmic distribution model.
- Standardized the parameter 'v' to account for sample size bias.
Main Results:
- Surname distribution exhibited near-perfect linearity, supporting Fisher's logarithmic distribution.
- The parameter 'v', indicating surname diversity or turnover, was higher in females.
- Standardized 'v' values were approximately one-third of estimates derived from exogamy data.
- Higher 'v' values for females suggest greater mobility of female marriage partners compared to males.
Conclusions:
- Fisher's logarithmic distribution effectively models surname patterns in this Italian population.
- Female marriage partners exhibit significantly higher mobility than males in the studied region.
- Surname analysis provides valuable insights into historical migration and sex-specific demographic behaviors.
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Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
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Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
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Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
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Pedigree Analysis
Overview
Gene Families
Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
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