基于mt16S rDNA的长蝽总科(异翅亚目:蝽次目)系统发育的研究  

Phylogenetic research on the Lygaeoidea(Hemiptera:Heteroptera) based on mt16S rDNA sequences

作　　者：李红梅[1] 

机构地区：[1]仲恺农业技术学院生命科学学院,广东广州510225

出　　处：《广州大学学报（自然科学版）》2007年第4期30-34,共5页Journal of Guangzhou University:Natural Science Edition

摘　　要：利用16S rDNA分子约540 bp的序列对长蝽总科9个科29个种进行系统发育分析.运用MP法、ML法和NJ法分析,结果表明:原来属于广义长蝽科的Pachygronthidae、Rhyparochromidae、Cymidae、Geocoridae、Blis-sidae、Oxycarenidae和狭义Lygaeidae并不形成一个单系的广义长蝽科;梭长蝽科Pachygronthidae的两个族Pachygronthini和Teracriini分成两支而形成多系;莎长蝽科Cymidae与梭长蝽科Pachygronthidae的Pachygronthi-ni族总是聚成一支形成姐妹群.研究说明广义长蝽科是多系,这与最近的形态学研究一致,从分子水平上支持Henry(1997)把广义长蝽科中的部分亚科提升为科的修订.与现有的形态分类系统有所不同的是,地长蝽科和狭义长蝽科都是多系群.Sequences from region of the mitochondrial ribosomal 16S rDNA gene are used to infer a molecular phylogeny for the Lygaeoidea based on 29 species representing 9 putative families. Three methods： the maximum parsimony（MP）, maximum likelihood （ML）, and neighbor-joining （NJ） in phylogenetic analysis are used. The results show that the groups Pachygronthidae、 Rhyparochromidae, Cymidae、 Geocoridae, Blissidae, Oxycarenidae, and Lygaeidae which formerly belonged to Lygaeidae are not converged to a monophyletic Lygaei- dae. Two tribes, Pachygronthini and Teracriini, of the family Pachygronthidae are formed as two clades. Cymidae and Pachygronthini （Pachygronthidae） are always formed a sister group. This analysis from molecular level confirmed the polyphyly of Lygaeidae, which was congruent with recent morphological studies. The result supported the revised classification of Henry （1997） in which some subfamilies in the Lygaeidae were raised to family status. Being different to the current morphological studies, Rhyparochromidae and Lygaeidae are both polyphyletic groups.

关 键 词：分子系统发育 长蝽总科 长蝽科 16S RDNA 

分 类 号：Q969.354.3[生物学—昆虫学]