PMID: 11336224May 5, 2001Paper

Composite interval mapping reveals a major locus influencing embryonic development rate in rainbow trout (Oncorhynchus mykiss)

The Journal of Heredity
Barrie D RobisonG H Thorgaard

Abstract

Little is known about the genetics controlling the rate of embryonic development in salmonids, despite the fact that this trait plays an important role in the life history of wild and cultured stocks. We investigated the genetics of embryonic development rate by performing an analysis of quantitative trait loci (QTL) on two families of androgenetically derived doubled haploid rainbow trout produced from a hybrid of two clonal lines with divergent embryonic development rates. A total of 170 doubled haploid individuals were genotyped at 222 marker loci [219 amplified fragment length polymorphism (AFLP) markers, 2 microsatellites, and p53]. A genetic linkage analysis resulted in a map consisting of 27 linkage groups with 21 of the markers remaining unlinked at a minimum LOD of 3.0 and maximum theta of 0.40. Eight of these linkage groups were matched to published rainbow trout linkage groups. Composite interval mapping (CIM) revealed evidence for two QTL influencing time to hatch, and suggestive evidence for a third. These QTL accounted for a total of 24.6% of the variation in time to hatch. One of these QTL had a large effect on development rate, especially in one family of doubled haploids, in which it explained 25.6% of the vari...Continue Reading

Citations

Dec 9, 2003·Trends in Plant Science·Barbara K Mable
Dec 10, 2002·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Gary H ThorgaardYniv Palti
Dec 17, 2009·BMC Genetics·Caird E Rexroad, Roger L Vallejo
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Sep 5, 2006·Genetics·Ruth B PhillipsGary H Thorgaard
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Apr 1, 2021·Molecular Ecology·Romain VilloutreixPatrik Nosil
Nov 5, 2021·Frontiers in Immunology·Eva-Stina EdholmSusana Magadan

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