Genetics. Published Articles Ahead of Print: June 14, 2005, Copyright © 2005
doi:10.1534/genetics.104.039719


A more recent version of this article appeared on August 1, 2005.
Originally published as Genetics Published Articles Ahead of Print on June 3, 2005.


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A Microsatellite Linkage Map of the European Seabass Dicentrarchus labrax L

1 Katholieke Universiteit Leuven
2 Roslin Institute
3 Hellenic Centre for Marine Research
4 Istituto di Scienze Marine

* To whom correspondence should be addressed. E-mail: dimitry.chistiakov{at}bio.kuleuven.ac.be.

Submitted on December 13, 2004
Revised on March 25, 2005
Accepted on 12 April 2005


Abstract

A genetic linkage map of the European seabass (Dicentrarchus labrax) was constructed from 174 microsatellite markers, including 145 new markers reported in this study. The mapping panel was derived from farmed seabass from the North Adriatic Sea and consisted of a single family including both parents and fifty full-sib progeny (biparental diploids). A total of 162 microsatellites were mapped in 25 linkage groups. Eleven loci represent type I (coding) markers; two loci are located within the peptide Y (linkage group 1) and cytochrome P450 aromatase (linkage group 6) genes. The sex-averaged map spans 814.5 centimorgans (cM) of the seabass genome. The female map covers 905.9 cM, whereas the male map only 567.4 cM. The constructed map represents the first linkage map of European seabass, one of the most important aquaculture species in Europe.

Key Words: Dicentrarchus labrax, aquaculture, linkage map, microsatellite DNA, sex-specific




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