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Heritability of juvenile growth traits in red drum (Sciaenops ocellatus L.)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Saillant, E. Ma, Liang Wang, Xiaoxue Gatlin, Delbert M. Gold, John Robert |
| Copyright Year | 2007 |
| Abstract | Heritability of juvenile growth rate was estimated for red drum (Sciaenops ocellatus), an economically im- portant sciaenid ¢sh in the southern USA. Thirty- eight families were generated via 'natural' spawning of multiple sets of ¢ve breeders (three damstwo sires) in individual brood tanks. Oispring were indi- vidually tagged with Passive Integrated Transponder (PIT) tags and mixed for grow-out in replicate 'com- mon-garden' tanks. Juvenile growth was followed from 166.4 � 18.6 to 254.0 � 27.0 mm (total length). Oispring were assigned a posteriori to individual brood ¢sh (dam and sire) based on genotypes at nu- clear-encoded microsatellites. Heritability (h 2 )o f a thermal growth coe⁄cient was estimated using an animal-additive model and a restricted maximum- likelihood algorithm. Estimates of h 2 were 0.33 � 0.08 and 0.31 � 0.08 for thermal growth coe⁄cient based on length and weight respectively. These results indicate a signi¢cant genetic compo- nent in juvenile growth rate in red drum. Estimates of h 2 for condition coe⁄cient (K) at various measure- ment dates averaged 0.38, suggesting a genetic com- ponent to shape in juvenile red drum. |
| Starting Page | 781 |
| Ending Page | 788 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1111/j.1365-2109.2007.01737.x |
| Volume Number | 38 |
| Alternate Webpage(s) | http://agrilife.org/gold/files/2012/05/Gold-heritability.pdf |
| Alternate Webpage(s) | https://doi.org/10.1111/j.1365-2109.2007.01737.x |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
