Heritability estimates for growth in the tropical abalone Haliotis asinina using microsatellites to assign parentage

Lucas, T., Macbeth, M., Degnan, S. M., Knibb, W. and Degnan, B. M. (2006) Heritability estimates for growth in the tropical abalone Haliotis asinina using microsatellites to assign parentage. Aquaculture, 259 1-4: 146-152. doi:10.1016/j.aquaculture.2006.05.039


Author Lucas, T.
Macbeth, M.
Degnan, S. M.
Knibb, W.
Degnan, B. M.
Title Heritability estimates for growth in the tropical abalone Haliotis asinina using microsatellites to assign parentage
Journal name Aquaculture   Check publisher's open access policy
ISSN 0044-8486
Publication date 2006-01-01
Sub-type Article (original research)
DOI 10.1016/j.aquaculture.2006.05.039
Volume 259
Issue 1-4
Start page 146
End page 152
Total pages 7
Place of publication Amsterdam
Publisher Elsevier Science Bv
Language eng
Subject C1
270207 Quantitative Genetics
630303 Aquaculture
Abstract The tropical abalone Haliotis asinina is a wild-caught and cultured species throughout the Indo-Pacific as well as being an emerging model species for the study of haliotids. H. asinina has the fastest recorded natural growth rate of any abalone and reaches sexual maturity within one year. As such, it is a suitable abalone species for selective breeding for commercially important traits such as rapid growth. Estimating the amount of variation in size that is attributable to heritable genetic differences can assist the development of such a selective breeding program. Here we estimated heritability for growth-related traits at 12 months of age by creating a single cohort of 84 families in a full-factorial mating design consisting of 14 sires and 6 dams. Of 500 progeny sampled, 465 were successfully assigned to their parents based on shared alleles at 5 polymorphic microsatellite loci. Using an animal model, heritability estimates were 0.48 +/- 0.15 for shell length, 0.38 +/- 0.13 for shell width and 0.36 +/- 0.13 for weight. Genetic correlations were > 0.98 between shell parameters and weight, indicating that breeding for weight gains could be successfully achieved by selecting for shell length. (c) 2006 Elsevier B.V. All rights reserved.
Keyword Gastropod
Abalone
Haliotis Asinina
Selective Breeding
Microsatellite Dna
Growth
Fisheries
Marine & Freshwater Biology
Heron-reef
Dicentrarchus-labrax
Ear Abalone
Sea-bass
Aquaculture
Australia
Survival
Linne
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 18:22:38 EST