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Genetic differentiation of starling ( Sturnus vulgaris: Aves) populations in New Zealand and Great Britain
Author(s) -
Ross Howard A.
Publication year - 1983
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.1983.tb04281.x
Subject(s) - sturnus , biology , starling , allopatric speciation , locus (genetics) , genetic drift , population , loss of heterozygosity , genetic variation , zoology , allele , evolutionary biology , demography , genetics , sociology , gene
Several hundred starlings (Sturnus vulgaris) were introduced to New Zealand from Great Britain during1860–1880. Allozymic variation at 24 loci was analysed in winter populations sampled at six localities in each country. New Zealand samples had fewer alleles per locus but the same mean heterozygosity (3% per locus) and proportion of polymorphic loci as did British samples. Winter populations in Britain contain European migrants and were genetically homogeneous. Paradoxically, genetic distances among derived New Zealand populations, and between New Zealand and Great Britain were much greater, similar in magnitude to those observed among allopatric populations in other avian species. The geographical pattern of genetic variation in New Zealand suggests that reproductive isolation of populations and random drift have contributed to the development of population differentiation.