Journal
GENE
Volume 392, Issue 1-2, Pages 196-205Publisher
ELSEVIER
DOI: 10.1016/j.gene.2006.12.017
Keywords
mitochondrial genome; luminous beetle; Coleoptera; Rhagaphthalmus lufengensis; Rhagophthalmus ohbai; molecular phylogeny
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We determined the mitochondrial MA (mtDNA) sequences of two luminous beetles (Arthropoda, Insecta, Coleoptera), Rhagophthalmus lufengensis from Yunnan, China and Rhagophthalmus ohbai from Yaeyama Island, Japan. We identified all the 37 mtDNA genes of R. lufengensis (15,982 bp) and the 34 genes of R. ohbai (15,704 bp). R. lufengensis and R. ohbai genomes have higher A + T contents than other coleopteran genomes although the gene arrangements are similar. Interestingly, in a study of the evolutionary relationship among R. lufengensis, R. ohbai and the firefly Pyrocoelia rufa, the phylogenetic tree inferred from IrRNA genes from mitochondrial genomes indicates a biogeographic relationship among the bioluminescent insects in East Asia and the phylogenetic tree inferred from luciferase-related genes from nuclear genomes shows an appropriate relationship among coleopterans, reflecting the evolutionary origin of bioluminescence. Thus, the mtDNAs of luminescent beetles can provide an insight into their evolutionary origin and biogeography. (c) 2006 Elsevier B.V. All rights reserved..
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