PHYLOGENETIC POSITION OF HERONIMUS-MOLLIS (DIGENEA) - EVIDENCE FROM 18S-RIBOSOMAL RNA

被引:23
作者
BARKER, SC [1 ]
BLAIR, D [1 ]
CRIBB, TH [1 ]
TONION, K [1 ]
机构
[1] JAMES COOK UNIV N QUEENSLAND,DEPT ZOOL,TOWNSVILLE,QLD 4811,AUSTRALIA
基金
澳大利亚研究理事会;
关键词
DIGENEA; PHYLOGENY; HERONIMIDAE; SCHISTOSOMA-MANSONI; PCR; 18S RIBOSOMAL-RNA; SMALL-SUBUNIT RIBOSOMAL-RNA; NUCLEOTIDE; PARSIMONY ANALYSIS; DISTANCE ANALYSIS;
D O I
10.1016/0020-7519(93)90043-X
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
Most (1918bp) of the nucleotide sequence of the 18S ribosomal RNA gene of Heronimus mollis was determined. We aligned this sequence with 18S rRNA sequences from 7 other digeneans and an aspidobothrean. Using these data we explored the phylogenetic position of H. mollis. No support was found for the hypothesis that H. mollis is the sister taxon of the remaining digeneans examined here; similarly, no support was found for the hypothesis that H. mollis is closely related to the paramphistomes. These analysis together with the skewness of the frequency distribution of the lengths of 100,000 trees sampled randomly from the set of all possible trees (generated from these data) indicate that 18S rRNA sequences are valuable for phylogenetic inference in the Digenea.
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页码:533 / 536
页数:4
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