The position of the Hymenoptera within the Holometabola as inferred from the mitochondrial genome of Perga condei (Hymenoptera: Symphyta: Pergidae)

被引:81
作者
Castro, LR [1 ]
Dowton, M [1 ]
机构
[1] Univ Wollongong, Inst Biomol Sci & Conservat Biol, Dept Biol, Wollongong, NSW 2500, Australia
关键词
mitochondrial genomes; molecular phylogenetics; Hymenoptera; Holometabola; Bayesian analysis;
D O I
10.1016/j.ympev.2004.11.005
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We sequenced most of the mitochondrial genome of the sawfly Perga condei (Insecta: Hymenoptera: Symphyta: Pergidae) and tested different models of phylogenetic reconstruction in order to resolve the position of the Hymenoptera within the Holometabola, using mitochondrial genomes. The mitochondrial genome sequenced for P. condei had less compositional bias and slower rates of molecular evolution than the honeybee, as well as a less rearranged genome organization. Phylogenetic analyses showed that, when using mitochondrial genomes, both adequate taxon sampling and more realistic models of analysis are necessary to resolve relationships among insect orders. Both parsimony and Bayesian analyses performed better when nucleotide instead of amino acid sequences were used. In particular, this study supports the placement of the Hymenoptera as sister group to the Mecopterida. (C) 2004 Elsevier Inc. All rights reserved.
引用
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页码:469 / 479
页数:11
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