Abstract
Although the taxonomy of click beetles (family Elateridae) has been studied extensively, inconsistencies remain. We examine here the relationships between species of Elateridae based on partial sequences of nuclear 28S ribosomal DNA. Specimens were collected primarily from Japan, while luminous click beetles were also sampled from Central and South America to investigate the origins of bioluminescence in Elateridae. Neighbor-joining, maximum-parsimony, and maximum-likelihood analyses produced a consistent basal topology with high statistical support that is partially congruent with the results of previous investigations based on the morphological characteristics of larvae and adults. The most parsimonious reconstruction of the "luminous" and "nonluminous" states, based on the present molecular phylogeny, indicates that the ancestral state of Elateridae was nonluminous. This suggests that the bioluminescence in click beetle evolved independent of that of other luminous beetles, such as Lampyridae, despite their common mechanisms of bioluminescence.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Central America
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Coleoptera / classification
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Coleoptera / genetics*
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Coleoptera / physiology
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DNA, Ribosomal / chemistry
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DNA, Ribosomal / genetics*
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Evolution, Molecular
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Japan
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Luminescence
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Molecular Sequence Data
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Phylogeny*
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RNA, Ribosomal, 28S / genetics*
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Sequence Analysis, DNA
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South America
Substances
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DNA, Ribosomal
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RNA, Ribosomal, 28S
Associated data
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GENBANK/AB231212
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