Patterns of variation within and between greek populations of Ceratitis capitata suggest extensive gene flow and latitudinal clines

dc.contributor.author	Kourti, A	en
dc.date.accessioned	2014-06-06T06:46:04Z
dc.date.available	2014-06-06T06:46:04Z
dc.date.issued	2004	en
dc.identifier.issn	00220493	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/2781
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-3142639359&partnerID=40&md5=623b968f5bf9cd2c3b364434fe41befd	en
dc.subject	Allozymes	en
dc.subject	Ceratitis capitata	en
dc.subject	Gene flow	en
dc.subject	Genetic clines	en
dc.subject	Natural populations	en
dc.subject.other	insect protein	en
dc.subject.other	allele	en
dc.subject.other	animal	en
dc.subject.other	article	en
dc.subject.other	enzymology	en
dc.subject.other	gene frequency	en
dc.subject.other	genetic variability	en
dc.subject.other	genetics	en
dc.subject.other	Greece	en
dc.subject.other	Mediterranean fruit fly	en
dc.subject.other	Alleles	en
dc.subject.other	Animals	en
dc.subject.other	Ceratitis capitata	en
dc.subject.other	Gene Frequency	en
dc.subject.other	Greece	en
dc.subject.other	Insect Proteins	en
dc.subject.other	Variation (Genetics)	en
dc.subject.other	Animalia	en
dc.subject.other	Capitata	en
dc.subject.other	Ceratitis	en
dc.subject.other	Ceratitis capitata	en
dc.subject.other	Drosophila melanogaster	en
dc.subject.other	Insecta	en
dc.title	Patterns of variation within and between greek populations of Ceratitis capitata suggest extensive gene flow and latitudinal clines	en
heal.type	journalArticle	en
heal.publicationDate	2004	en
heal.abstract	Four natural Greek populations of Mediterranean fruit fly, Ceratitis capitata (Wiedemann), was studied for genetic variability at 25 enzyme loci. The comparison of polymorphism within and between populations shows two loci with high between-population heterozygosity (HT) and very high fixation index (FST) values, suggesting the presence of balancing selection. The gradual decline of common allele frequency of the polymorphic loci tested indicated that latitudinal clines are present in Greece. Indirect estimates of gene flow based both on Wright's method (Nm) and on the Slatkin's method (Nm), which depends on the frequencies of rare alleles found in only one population, revealed a substantial amount of gene flow (Nm = 3.493 and Nm = 3.197). These estimates of gene flow may well explain why the ""introduced"" Greek populations of C. capitata, in spite of their low genetic variability, display the same polymorphic loci. Gene flow in combination with natural selection and genetic drift may have played an important role to genetic differentiation in this species in Greece.	en
heal.journalName	Journal of Economic Entomology	en
dc.identifier.issue	3	en
dc.identifier.volume	97	en
dc.identifier.spage	1186	en
dc.identifier.epage	1190	en