Volume 24 Issue 5
Sep.  2003
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SHI Yan-feng, SHAN Xiang-nian, LI Jian, ZHANG Hai-jun, ZHENG Ai-ling. Phylogenetic Relationships of Seven Cetartiodactyla Species Inferred from Mitochondrial Genome. Zoological Research, 2003, 24(5): 331-336.
Citation: SHI Yan-feng, SHAN Xiang-nian, LI Jian, ZHANG Hai-jun, ZHENG Ai-ling. Phylogenetic Relationships of Seven Cetartiodactyla Species Inferred from Mitochondrial Genome. Zoological Research, 2003, 24(5): 331-336.

Phylogenetic Relationships of Seven Cetartiodactyla Species Inferred from Mitochondrial Genome

  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2003-10-22
  • Using the mitochondrial genomes of the muntjak (Cervidae:Muntiacus) sequenced by our lab.and 6 other species of Cetartiodactyla obtained from the GenBank,we calculated the sequence lengths and base compositions of their individual concatenated sequences of 13 amino acid sequences,13 protein-coding genes,2 rRNA genes,22 tRNA genes and control region.Sequence differences of protein-coding genes between cow/sheep,sheep/muntjak and muntjak/cow were analysed and genetic distances of the concatenated 12S rRNA and 16S rRNA genes among the 7 Cetartiodactyla species were calculated with MEGA.Based on the contatenated sequences of 13 inferred amino acid sequences of protein-coding genes,we constructed the phylogenetic tree with Neighbor-joining method,and discussed their phylogenetic relationships.Our results show:1)those species are divided into 3 clades which are a muntjak-sheep-cow clade,a pig-alpaca clade and a hippopotamus-whale clade;sheep and muntjak are first grouped into one branch and then cow is added to them;2)there is a closer relationship between muntjak and sheep than that betweeen muntjak and cow;3)the divergence between the muntjak and sheep lineages occurred at 14.7 million years ago and the one between the muntjak and cow lineages did at 16.0 million years ago.
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