Genetic diversity and geographic differentiation of the giant tiger shrimp (Penaeus monodon) in Thailand analyzed by mitochondrial COI sequences.
Biochem Genet
; 47(1-2): 42-55, 2009 Feb.
Article
em En
| MEDLINE
| ID: mdl-19082881
ABSTRACT
Genetic diversity and geographic differentiation of the giant tiger shrimp, Penaeus monodon, in Thai waters (Satun, Trang, Phangnga, and Ranong in the Andaman Sea and Chumphon and Trat in the Gulf of Thailand) were examined by COI polymorphism (N = 128). We observed 28 COI mitotypes across all investigated individuals. The sequence divergence between pairs of mitotypes was 0.00-20.76%. A neighbor-joining tree clearly indicated lineage separation of Thai P. monodon and large nucleotide divergence between interlineage mitotypes but limited divergence between intralineage mitotypes. High genetic diversity was found (mean sequence divergence = 6.604%, haplotype diversity = 0.716-0.927, pi = 2.936-8.532%). F-statistics (F(ST)) and an analysis of molecular variance (AMOVA) indicated that the gene pool of Thai P. monodon was not homogeneous but genetically differentiated intraspecifically (P < 0.05). Six samples of P. monodon could be allocated into three different genetic populations Trat (A), Chumphon (B), and the Andaman samples Satun, Trang, Phangnga, and Ranong (C). Contradictory results regarding patterns of geographic differentiation previously reported by various molecular approaches were clarified by this study.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Variação Genética
/
Penaeidae
Limite:
Animals
País/Região como assunto:
Asia
Idioma:
En
Revista:
Biochem Genet
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Tailândia