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Published 2004

Read in Norwegian

Publication details

Journal : Aquaculture Research , vol. 35 , p. 893–904–12 , 2004

International Standard Numbers :
Printed : 1355-557X
Electronic : 1365-2109

Publication type : Academic article

Contributors : Moen, Thomas; Agresti, Jeremy J.; Cnaani, Avner; Moses, Hillary; Famula, Thomas R.; Hulata, Gideon; Gall, Graham A. E.; May, Bernie

If you have questions about the publication, you may contact Nofima’s Chief Librarian.

Kjetil Aune
Chief Librarian
kjetil.aune@nofima.no

Summary

A genome scan, searching for Quantitative Trait Loci (QTL) for the traits cold tolerance and body weight in tilapia, was performed on a cross between an (Oreochromis niloticus x Sarotherodon galilaeus) male and an (O. mossambicus x O. aureus) female. 54 microsatellites and 23 AFLP primer combinationswere genotyped and tested for marker-trait associations. Sex-specific linkage maps were constructed from this data. 23 point-wise significant marker-trait associations were found in the genome scan, and putative QTLs were subsequently tested inanother (On x Sg) x (Om x Oa) family. None of the putative QTLs from the first experiment were significant in the secondexperiment. However, one microsatellite, UNH130, found to beassociated to weight in the first experiment, was found to be strongly associated to cold tolerance in the second experiment. Since QTLs for cold tolerance and body weight were recentlyfound on the linkage group containing UNH130 (linkage group 23) in another study, this linkage group was investigated more closely using interval mapping. Evidence was found for the cold tolerance QTL segregating in the female parent as well.