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Allozymic variability in Spanish populations of Ceratitis capitata

Published online by Cambridge University Press:  15 July 2004

Carmen Callejas  and
M. Dolores Ochando
Carmen Callejas
Affiliation:
Dpto. de Genética, Fac. CC. Biológicas, Universidad Complutense, 28040 Madrid, Spain
M. Dolores Ochando
Affiliation:
Dpto. de Genética, Fac. CC. Biológicas, Universidad Complutense, 28040 Madrid, Spain
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Abstract

Introduction. The Tephritidae Ceratitis capitata is one of the most important agricultural pests in the world. Eradication programmes need as much genetic information as possible to be efficient. It is vital to know the genetic variation that exists in the areas thought to have been important in the expansion of the species, such as the Iberian Peninsula. The aim of this study was to determine the genetic structure of Spanish C. capitata populations and the relationships between them. Materials and methods. We studied the genetic variability of populations of C. capitata (eight wild samples and one laboratory strain) through the use of the horizontal starch gel electrophoresis technique and the assay of fifteen enzyme-coding loci chosen at random. Results. The quantity of variability detected in this polyphagous species was not high. Of the 15 loci studied, only four were clearly polymorphic. No significant differences were found in any comparison of populations collected from different hosts. Discussion. The distribution patterns of this variation seem to be the result of gene flow and selection in the form of agricultural practices.

Keywords

SpainCeratitis capitataelectrophoresisgenetic variationEspagneCeratitis capitataélectrophorèsevariation génétique
Type
Research Article
Information
Fruits , Volume 59 , Issue 3 , May 2004 , pp. 181 - 190
Copyright
© CIRAD, EDP Sciences

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