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Issue:ISSN 1000-7083
          CN 51-1193/Q
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Your Position :Home->Past Journals Catalog->2010 Vol.29 No.2

Analysis of the COⅡ Gene Sequences and Discussion on the Phylogeny of Partial Chrysomelinae Insects
Author of the article:DAI Jin-xia, ZHANG Da-zhi
Author's Workplace:(College of Life Sciences, Ningxia University, Yinchuan 750021, China)
Key Words:Chrysomelinae; COⅡ gene; phylogenetic relationship
Abstract:
This paper dealt with the nucleotide composition and phylogenetic relationship among 12 species in Chrysomelinae based on 585 bp sequences of the CO gene. The results showed: the divergence of sequences is 45.6%; the average contents of T, C, A and G were 37.5%, 16.5%, 35.3% and 10.7%, respectively; the contents of A+T is obviously higher than that of C+G, and reach 86.7% at the third codon position; nucleotide replacement mostly occurs between C←→T or A←→T at the third position. Chrysocus chinensis is regarded as an outgroup; the phylogenetic tree placed the genera Chrysolina and Gonioctena close together as well as Phratora and Chrysomela. The genus Humba lay at the base of the tree as a monophyletic clade. The phylogeny of them were as follows: (Humba(PhratoraChrysomela)(ChrysolinaGonioctena)). The relationship among species reflects its special feeding habit which is closely related to the classification system.
Key words: Chrysomelinae; CO gene; phylogenetic relationship
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