*Present address: L Li, Experimental Marine Biology Laboratory, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China.
Evaluation of relative growth performance and genotype by environment effects for cross-bred yellow perch families reared in communal ponds using DNA parentage analyses
Article first published online: 20 APR 2009
© 2009 The Authors. Journal Compilation © 2009 Blackwell Publishing Ltd
Volume 40, Issue 12, pages 1363–1373, August 2009
How to Cite
Wang, H.-P., Li, L., Wallat, G., Brown, B., Yao, H., Gao, Z., Tiu, L., O'Bryant, P., Rapp, D. and MacDonald, R. (2009), Evaluation of relative growth performance and genotype by environment effects for cross-bred yellow perch families reared in communal ponds using DNA parentage analyses. Aquaculture Research, 40: 1363–1373. doi: 10.1111/j.1365-2109.2009.02232.x
- Issue published online: 16 AUG 2009
- Article first published online: 20 APR 2009
- yellow perch;
- DNA parentage analysis;
- genotype by environment;
- genetic improvement
From 24 mating sets, 6300 fingerling of yellow perch (Perca flavescens) were stocked into one pond and equal numbers of progeny from six representative sets out of the 24 were stocked into each of two other ponds. After communal rearing for 21 months, total length and body weight were assessed for n=300 fish in each of the three ponds and molecular pedigrees were performed for each sampled individual to assign the progeny back to the original parents. The overall average number of alleles per locus was A=16.4 and observed and expected heterozygosities were Ho=0.88 and He=0.77 respectively. The mean weight of random samples and the top 10% fast-growing fish from the pond with all the sets was significantly greater than those from either of the two replicate ponds with six crosses. For the two replicate ponds, no significant differences were found in family rankings and assignment of the top 10% fast-growing fish, indicating that families with superior growth performance in one pond also exhibited the same superior growth performance in the replicate pond. However, there were no significant correlations detected in family mean weights of the top 10% fish between any two of the three ponds.