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Genetic and morphological variation in three populations of Donax spp. in the gulf of Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Supawadee Manatrinon 2. On-Uma Thonglor 3. Anawat Boonyapakdee |
| Title | Genetic and morphological variation in three populations of Donax spp. in the gulf of Thailand |
| Publisher | Genetics Society of Thailand |
| Publication Year | 2555 |
| Journal Title | Thai Journal of Genetics |
| Journal Vol. | 5 |
| Journal No. | 1 |
| Page no. | 79-88 |
| Keyword | morphometric, variation, ISSR marker, Donax spp. |
| ISSN | 8578664 |
| Abstract | The aim of this research was to evaluate the genetic and morphological variation among the three populations of Donax spp. along the Gulf of Thailand. Samples were collected from Bangsean, Cha-Am and Suanson sandy beaches, and analyzed to reveal genetic and morphological variation by using 4 loci based on Inter-Simple Sequence Repeats markers and 5 morphological variables. The discriminant function analysis of morphology presented a clear separation among three populations. Polymorphisms were detected at 4 loci across all three populations. The mean number of alleles ranged from 1.65?0.48 to 1.90?0.30 and the effective number of alleles ranged from 1.18?0.27 to 1.29?0.30. Donax spp. from Suanson beach showed the lowest level of genetic variation at which Nei's (1973) gene diversity was 0.16?0.17, whereas Nei's (1973) gene diversity of Donax spp. from Bangsean and Cha-Am beaches were 0.18?0.15 and 0.19?0.16, respectively. Percentage of polymorphic loci ranged from 66.22 to 89.86%. Overall, the results from this research based on genetic variation were in the same range of most other marine bivalves, which allows for potential adaptation to environmental changes. Furthermore, the results indicated that the population of Donax spp. from Suanson beach should be treated as a separate unit for conservation management. |
