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Báo cáo sinh học: "Latitudinal clines of allelic frequencies in Mediterranean populations of Ceratitis capitata (Wiedemann)"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Latitudinal clines of allelic frequencies in Mediterranean populations of Ceratitis capitata (Wiedemann) | 201 Genet Sei Evol 1995 27 201-210 Elsevier INRA Original article Latitudinal clines of allelic frequencies in Mediterranean populations of Ceratitis capitata Wiedemann A Kourti1 p Hatzopoulos2 1 Agricultural University of Athens Laboratory of Genetics 2 Agricultural University of Athens Laboratory of Molecular Biology Department of Agricultural Biology and Biotechnology Lera Odos 75 11855 Athens Greece Received 28 February 1994 accepted 3 October 1994 Summary - Collections of Ceratitis capitata from 6 different areas from 4 Mediterranean countries were analysed for genetic variation. Six out of the 25 loci tested were found to be polymorphic. Allelic frequencies were estimated and the populations were found to be panmictic for 4 out of those 6 loci. Two of the polymorphic loci showed a significant clinal pattern in gene frequency changes by Spearman rank correlation with latitude. At 4 loci a steep gradient in allele frequency in Idh from 1.00 to 0.63 is observed in the axis of the north-south transect. Ceratitis capitata allelic frequency cline Résumé Clines latitudinaux de frequences aỉléỉiques dans des populations médi-terranéennes de Ceratitis capitata Wiedemann . Des échantilỉons de la mouche des fruits Ceratitis capitata provenant de 6 regions differentes de 4 pays méditerranéens ont été examines pour leur polymorphisme génétique à 25 locus enzymatiques. Six des locus se sont avérés polymorphes et les frequences génotypiques observées à 4 de ces locus sont conformes à 1 hypothèse de panmixie. Un cline latitudinal significatif des frequences alléliques a été mis en evidence pour 2 de ces genes polymorphes par un test de correlation de rang de Spearman. Pour 4 locus les variations de frequences alléliques dans I axe nord-sud sont importantes par exemple la frequence de 1 allèle 1.00 du gene Idh varie de 1 00 à 0 63 le long de cet axe. Ceratitis capitata frequence allélique cline 202 A Kourti p Hatzopoulos INTRODUCTION The Mediterranean fruit fly Ceratitis .