| dc.description.abstract | Cyprinidae is the largest fish family with more than 2000 species grouped in approximately
340 genera. The family belongs to the order Cypriniformes, of whose genera and species the
cyprinids make up two-thirds. The phylogenetic relationships of the selected taxa among the
cyprinidae family were inferred from the morphological traits (30 taxa) and mitochondrial
gene (26 taxa) cytochrome b sequences. The average nucleotide composition were T (U)
28.2%, C 28.1%, A 29.1% and G 14.6% and Transition/Transversion bias (R) is 2.22. Faster
rate of transition and transversion showed in the third codon position. Highest genetic
distance was observed 0.348 in between B. bendelisis with E. danricus and in Crossocheilus
and Labeo (0.350) genera. The genetic distances was 0.087 in between L. calbasu and L.
gonius species and Catla and Labeo (0.10) genera. B. bendelisis showed the highest
divergence time 7.62 and lowest 2.91 in C. catla and L. rohita. The result from maximum
likelyhood (ML) method using morphological traits in MESQUITE and mitochondrial gene
cytochrome b in MEGA 6 strongly supported monophyletic lineage of leuciscinae subfamily.
L. rohita, C. reba, L. bata, L. calbasu, C. mrigala, C. catla, L. gonius, L. dyocheilus, C.
carpio were closely related in both tree. C. latius and G. gotyla from garrinae subfamily were
very close in both tree but not monophyletic. S. gora formed polyphyletic clade with R. bola
and B. barila in both tree. D. maculatus (schizothoracinae) formed sister group with B.
bendelisis in amino acid tree and with B. gonionotus in nucleotide tree. In both trees,
rasborinae appeared as polyphyletic group. Combined with analysis of both morphological
and molecular data this hypothesis suggested that more study are required in each subfamily
that were previously proposed to resolved the phylogenetic relationships among the cyprinid. | en_US |
