Data/hora: 06/06/2024 11:54:27

Provedor de dados: | 74
País: | Brazil
Título: | Genetic variation of wild and hatchery populations of the catla Indian major carp (Catla catla Hamilton 1822: Cypriniformes, Cyprinidae) revealed by RAPD markers
Autores: | Rahman,S.M. Zakiur; Khan,Mukhlesur Rahman; Islam,Shahidul; Alam,Samsul.
Data: | 2009-01-01
Ano: | 2009
Palavras-chave: | Catla catla; Genetic variation; RAPD markers.
Resumo: | Genetic variation is a key component for improving a stock through selective breeding programs. Randomly amplified polymorphic DNA (RAPD) markers were used to assess genetic variation in three wild population of the catla carp (Catla catla Hamilton 1822) in the Halda, Jamuna and Padma rivers and one hatchery population in Bangladesh. Five decamer random primers were used to amplify RAPD markers from 30 fish from each population. Thirty of the 55 scorable bands were polymorphic, indicating some degree of genetic variation in all the populations. The proportion of polymorphic loci and gene diversity values reflected a relatively higher level of genetic variation in the Halda population. Sixteen of the 30 polymorphic loci showed a significant (p &lt; 0.05, p &lt; 0.01, p &lt; 0.001) departure from homogeneity and the F ST values in the different populations indicated some degree of genetic differentiation in the population pairs. Estimated genetic distances between populations were directly correlated with geographical distances. The unweighted pair group method with averages (UPGMA) dendrogram showed two clusters, the Halda population forming one cluster and the other populations the second cluster. Genetic variation of C. catla is a useful trait for developing a good management strategy for maintaining genetic quality of the species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100030
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572009005000013
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.32 n.1 2009
Fonte: | info:eu-repo/semantics/openAccess