The genome of the olive fruit fly Bactrocera oleae: localization of molecular markers by in situ hybridization to the salivary gland polytene chromosomes

Nine specific DNA probes (genomic or cDNA) from Ceratitis capitata have bee n mapped by in situ hybridization to the salivary gland polytene chromosome s of the olive fruit fly Bactrocera oleae, a major agricultural pest, thus establishing molecular markers for the 5 autosomal chromosomes. Taking into account the present results, as well as previous data obtained mainly by i n situ hybridizations, chromosomal homologies among B. oleae, C. capitata a nd B. tryoni are established. Data show extensive linkage group conservatio n among the 3 taxa of the economically important and globally distributed f amily, the Tephritidae.