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Phylogenetic relationships and the evolution of mimicry in the Chauliognathus yellow-black species complex (Coleoptera : Cantharidae) inferred from mitochondrial COI sequences

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Phylogenetic relationships and the evolution of mimicry in the Chauliognathus yellow-black species complex (Coleoptera : Cantharidae) inferred from mitochondrial COI sequences

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Título Phylogenetic relationships and the evolution of mimicry in the Chauliognathus yellow-black species complex (Coleoptera : Cantharidae) inferred from mitochondrial COI sequences
Autor Machado, Vilmar
Araujo, Aldo Mellender de
Serrano, José
Galián, José
Abstract The phylogenetic relationships of twelve species of Chauliognathus were investigated by studying the mitochondrial cytochrome oxidase I gene. A 678 bp fragment of the COI gene was sequenced to test the hypothesis that the Müllerian mimicry species of the “yellow-black” complex make up a monophyletic clade, separated from species with other colour patterns. The data set was analysed by neighbour-joining, maximum parsimony and maximum likelihood procedures. The results support a single origin of the yellow-black colour pattern during the evolution of the genus, with one main clade formed by Chauliognathus lineatus, C. tetrapunctatus, C. riograndensis, C. flavipes, C. octomaculatus, C. fallax, and another one formed by two species, C. expansus and C sp 1, plus an orange-black-coloured species. The nucleotide divergences found between C. sp 3 (black) and the other species studied fall within the level expected for species from different genera. The similarity of colour patterns of the yellow-black species has been considered an example of Müllerian mimicry by conservation of the ancestral state with some minor modifications.
Contido em Genetics and molecular biology. Ribeirão Preto, SP. Vol. 27, no. 1 (Mar. 2004), p. 55-60
Assunto Chauliognathus
Filogenética
[en] Cantharidae
[en] Chauliognathus
[en] COI
[en] Coleoptera
[en] Müllerian mimicry
[en] phylogeny
[en] yellow-black complex
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/23390
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