|
Allozyme-based analysis of genetic variation among 3 cultured stocks of snakehead fish, Channa striata (BLOCH, 1797) |
|---|---|
| รหัสดีโอไอ | |
| Creator | Panom Krachangpoj Sodsuk |
| Title | Allozyme-based analysis of genetic variation among 3 cultured stocks of snakehead fish, Channa striata (BLOCH, 1797) |
| Publisher | Genetics Society of Thailand |
| Publication Year | 2555 |
| Journal Title | Thai Journal of Genetics |
| Journal Vol. | 5 |
| Journal No. | 2 |
| Page no. | 183-193 |
| Keyword | genetic variation, allozyme, snake head fish (Channa striata) |
| ISSN | 8578664 |
| Abstract | Genetic variation based on allozyme markers was analysed and compared among three cultured stocks (Suphan Buri, Nakhon Ratchasima and Buri Ram) of snakehead fish, Channa striata (BLOCH, 1797). Out of 22 allozyme loci screened, 7 polymorphic loci were found. Genetic variabilities including average number of alleles (Na), effective number of alleles (Ae), allelic richness (R), observed heterozygosity (Ho) and expected heterozygosity (He) were 1.242 (1.1361.318), 1.032 (1.0191.049), 1.235 (1.1361.308), 0.024 (0.0120.037) and 0.026 (0.0170.038), respectively. All three cultured stocks did not exhibit significant deviations from Hardy-Weinberg equilibrium (PHWE>0.05) when all 22 loci were analysed. In addition, the Na, Ho and He values of these cultured stocks were comparable to those from the wild population. Moreover, genetic differentiation analysis revealed that these cultured stocks are not genetically different (P>0.02). Altogether, the results suggested that the three cultured stocks have equally good potential for using as a broodstock population and selective breeding. Genetic data from this study combined with growth performance data from the previous study, suggest that the Buri Ram stock, which is specifically from the Buri Ram Aquaculture Genetics Research and Development Center, is the most suitable one to be used in selective breeding program of snakehead fish, in order to have the most suitable strain for the Norhteastern region. |
