Genetic diversity and phylogeny of the family Osteoglossidae by the nuclear 18S ribosomal RNA and implications for its conservation

文献类型： 外文期刊

第一作者： Mu, Xi-dong

作者： Mu, Xi-dong;Gu, Dang-en;Yang, Ye-xin;Luo, Du;Meng, Xu;Wang, Xue-jie;Hu, Yin-chang;Luo, Jian-ren

作者机构：

关键词： Osteoglossidae;18S rDNA;Genetic diversity;Phylogeny;Conservation

期刊名称：BIOCHEMICAL SYSTEMATICS AND ECOLOGY （ 影响因子：1.381； 五年影响因子：1.351 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： The genetic structure of the family Osteoglossidae from different geographical regions was examined using the nuclear 18S ribosomal RNA (18S rDNA) sequence. The results showed that the partial length of 18S rDNA was 1277 bp, and they were relatively conserved in the species of the family Osteoglossidae. A total of 62(4.83%) polymorphic sites were observed, and 28 haplotypes were defined, which were characterized by different haplotype diversity (0.00105-0.900) and nucleotide diversity (0.00321-3.000). Analysis of molecular variance (AMOVA) showed genetic divergence of these species (79.76%). Phylogenetic analysis revealed that 18S rDNA was a suitable genetic marker and was able to distinguish phylogenetic relationships among different Osteoglossidae species, and it also supported current taxonomy. In addition, low genetic diversity of several species provides genetic assessment information and should be taken into consideration to implement a conservation management planning for some species, such as Scleropages formosus green arowana. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.

分类号： Q5

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