Estimates of gene flow from rare alleles in natural populations of medfly Ceratitis capitata (Diptera: Tephritidae)

Bulletin of Entomological Research
Anna Kourti

Abstract

Gene flow based on the spatial distribution of rare alleles at 25 gene loci was estimated in 15 populations of Ceratitis capitata (Wiedemann) from different parts of the world. Estimates of Nm, the number of migrants exchanged per generation among populations in different regions of the world, appeared to be quite similar, ranging from 3.36 in tropical Africa to 2.94 in the New World and 2.72 in Mediterranean basin populations. This suggests that gene flow among neighbouring populations of medfly is quite extensive. The genetic differentiation in American, Mediterranean and African populations was related to major climatic differences between North and South. These differences arise mainly from five loci that showed gene frequency patterns suggestive of latitudinal clines in allele frequencies. The clinal variation was such that tropical-subtropical populations were more heterozygous than temperate populations. It was concluded that gene flow, counteracting the forces of natural selection and genetic drift, determines the extent to which geographical populations of C. capitata are differentiated.

References

Jul 1, 1975·Genetics·T Nagylaki
Mar 19, 1973·Molecular & General Genetics : MGG·R H BeelenH J Wijsman
Mar 1, 1981·Computer Programs in Biomedicine·E A BeGole
Feb 1, 1994·Biochemical Genetics·B A McPheronW S Sheppard
Jul 3, 1998·Genetics·T LenormandM Raymond
Dec 29, 1998·The Journal of Heredity·A R MalacridaC R Guglielmino
Jul 25, 2000·Insect Molecular Biology·M BonizzoniL Zheng
Jan 1, 1978·Proceedings of the National Academy of Sciences of the United States of America·T Nagylaki
Mar 1, 1978·Genetics·R A VoelkerL E Mettler
Mar 1, 1951·Annals of Eugenics·S WRIGHT
Mar 1, 1975·Evolution; International Journal of Organic Evolution·Masatoshi NeiRanajit Chakraborty
Jan 1, 1985·Evolution; International Journal of Organic Evolution·Montgomery Slatkin
Jun 1, 1979·Evolution; International Journal of Organic Evolution·William W M Steiner
Jan 1, 1982·Evolution; International Journal of Organic Evolution·J G OakeshottG K Chambers
Jan 1, 1975·The American Naturalist·Robert M MayRoss E McMurtrie

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