Large Amounts of Genetic Divergence among Italian Species of the Genus Orchesella (Insecta, Collembola) and the Relationships of Two New Species

doi:10.1006/mpev.2000.0854

Molecular Phylogenetics and Evolution

Volume 17, Issue 3, December 2000, Pages 456-461

https://doi.org/10.1006/mpev.2000.0854 Get rights and content

Abstract

The phylogenetic position of two putative new species of the collembolan genus Orchesella was investigated by comparison with four other Italian species of the genus using a fragment of the mitochondrial gene encoding for subunit I of cytochrome c oxidase (COI). The gene showed the well-known A + T bias, typical of insect mitochondrial DNA, although A + T content was not as high as that observed in species belonging to more derived insect orders. The large number of variable sites in 3rd codon positions (85.2% variable) suggested that these sites contain significant homoplasy due to multiple hits. Despite the lack of morphological differentiation, the COI portion examined shows remarkable levels of genetic divergence between the putative species and their closest relatives. Phylogenetic analysis suggests that one of the putative new species is related to O. villosa, whereas the other is included in a clade with O. cincta and O. ranzii. The species O. chiantica appears to be related to O. villosa, agreeing with previous allozyme data.

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Regular ArticleLarge Amounts of Genetic Divergence among Italian Species of the Genus Orchesella (Insecta, Collembola) and the Relationships of Two New Species

Abstract

Mol. Phylogenet. Evol.

Biol. J. Linn. Soc.

Mol. Phylogenet. Evol.

Mol. Phylogenet. Evol.

Mol. Phylogenet. Evol.

Rates of DNA sequence evolution differ between taxonomic groups

Science

Phylogeny of Heliconius butterflies inferred from mitochondrial DNA sequences (Lepidoptera: Nimphalidae)

Mol. Phylogenet. Evol.

Phylogeny of Greya (Lepidoptera: Prodoxidae), based on nucleotide sequence variation in mitochondrial cytochrome oxidase I and II: Congruence with morphological data

Mol. Biol. Evol.

Drosophila melanogaster mitochondrial DNA, a novel gene organization and genetic code

Nature

The evolution of ultraviolet patterns in European Colias butterflies (Lepidoptera, Pieridae): A phylogeny using mitochondrial DNA

Heredity

The use of genetic markers for the diagnosis of sibling species in the genus Isotomurus (Insecta, Collembola)

Boll. Zool.

The mitochondrial DNA molecule of Drosophila yakuba: Nucleotide sequence, gene organization and genetic code

J. Mol. Evol.

The CO-I and the CO-II region of honeybee mitochondrial DNA: Evidence for variation in insect mitochondrial evolutionary rates

Mol. Biol. Evol.

Further acquisitions on systematic relationships within the genus Orchesella (Collembola, Entomobryidae) using allozymes

Acta Zool. Fennica

Evolution of the mitochondrial cytochrome oxidase II gene in Collembola

J. Mol. Evol.

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Mol. Ecol.

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Mitochondrial DNA sequences and multiple data sets: A phylogenetic study of phytophagous beetles (Chrysomelidae: Ophraella)

Mol. Biol. Evol.

Regular Article
Large Amounts of Genetic Divergence among Italian Species of the Genus Orchesella (Insecta, Collembola) and the Relationships of Two New Species