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A microsatellite linkage map of the blacklip abalone, Haliotis rubra

journal contribution
posted on 2006-12-01, 00:00 authored by M Baranski, S Loughnan, Chris AustinChris Austin, N Robinson
There is considerable scope for genetic improvement of cultured blacklip abalone Haliotis rubra in Australia using molecular marker-assisted, selective-breeding practices. Such improvement is dependent on the availability of primary genetic resources, such as a genetic linkage map. This study presents a first-generation linkage map of H. rubra, containing 122 microsatellite markers typed in a single full-sib family. These loci mapped to 17 and 20 linkage groups for the male and female respectively, and when aligned, the consensus map represented 18 linkage groups. The male linkage map contained 102 markers (one unlinked) covering 621 cM with an average intermarker spacing of 7.3 cM, and the female map contained 98 markers (eight unlinked) covering 766 cM with an average intermarker spacing of 9.8 cM. Analysis of markers informative in both parents showed a significantly higher recombination rate in the female parent, with an average male-to-female recombination ratio of 1:1.45 between linked pairs of markers. This linkage map represents a significant advancement in the genetic resource available for H. rubra and provides a framework for future quantitative trait loci mapping and eventual implementation of marker-assisted selection.

History

Journal

Animal genetics

Volume

37

Issue

6

Pagination

563 - 570

Publisher

Wiley

Location

Chichester, Eng.

ISSN

0268-9146

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2006, The Authors