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Type of publication: Journal Article
Type of document: Full Paper

Year: 2004

Authors: Huttunen, S; Aspi, J; Hoikkala, A; Schlötterer, C

Title: QTL analysis of variation in male courtship song characters in Drosophila virilis.

Source: Heredity (Edinb). 2004; 92(3):263-269

Authors Vetmeduni Vienna:

Schlötterer Christian

Vetmed Research Units
Institute of Animal Breeding and Genetics

We have used a quantitative trait locus (QTL) mapping approach to study the genetic basis of differences between two Drosophila virilis strains representing extreme phenotypes in two song characters, the number of pulses in a pulse train (PN) and the length of a pulse train (PTL). Variation in these characters among 520 F2 males was studied by single-marker analysis and composite interval mapping (CIM) using a recombination linkage map constructed for 26 microsatellite markers. In single-marker analysis, two adjacent microsatellite markers on the third chromosome, msat19 and vir84 explained 13.8 and 12.4% of the variation in PN and 9.9 and 6.5% of the variation in PTL, respectively. CIM analysis revealed significant QTLs affecting PN, located on the X and the second, third and fourth chromosome of D. virilis, while variation in PTL was attributable to QTLs located only on the third chromosome.

Keywords Pubmed: Animals
Chromosome Mapping
Crosses, Genetic
Genes, Insect
Genetic Markers
Genetic Variation*
Microsatellite Repeats
Quantitative Trait Loci*
Vocalization, Animal*/physiology*

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