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Volume 24 Issue 3
May  2003
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BAO Lei, NIU Cui-juan, MA Rui LI Qing-fen. 2003. Sequences and Phylogeny of Partial Mitochondrial COⅠ Gene from Four Brachionus Species. Zoological Research, 24(3): 200-204.
Citation: BAO Lei, NIU Cui-juan, MA Rui LI Qing-fen. 2003. Sequences and Phylogeny of Partial Mitochondrial COⅠ Gene from Four Brachionus Species. Zoological Research, 24(3): 200-204.
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Sequences and Phylogeny of Partial Mitochondrial COⅠ Gene from Four Brachionus Species

  • Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering,College of Life Sciences,Beijing Normal University,Beijing 100875,China

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
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  • The partial mitochondrial COⅠ gene was sequenced from 40 individuals of four Brachionus species.The sequences were compared and their molecular phylogenetic trees were constructed by UPGMA,neighbor-joining and maximum parsimony methods using B.plicatilis as outgroup.The length of sequences was 543 bp,in which frequency of A+T was 65.3%,and a considerable variation of 157 nucleotide sites (28.9%) was detected.All of three trees suggested that B.quadridentatus is relatively closer to B.urceus than other species,and then to B.leydigi,last to B.calyciflorus.This result is consistent with that of traditional morphological taxonomy.
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