2010
DOI: 10.1038/hdy.2010.31
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High mitochondrial DNA sequence diversity in the parthenogenetic earthworm Dendrobaena octaedra

Abstract: Apomictic parthenogens are clonal organisms with limited genetic opportunity for increasing diversity beyond mutation. However, such species can be successful and have been shown to harbor more genetic diversity than might be expected. Here we surveyed diversity of the cytochrome oxidase subunit I gene from the mitochondrial genome of the earthworm Dendrobaena octaedra, an apomictic parthenogen. Diversity estimates made previously from allozyme markers for this species were high, but could have been affected b… Show more

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Cited by 22 publications
(13 citation statements)
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“…However, since the F1-generation has been used some contribution to the differences between populations from contaminated and reference sites could come from maternal effects (Mousseau and Fox 1998). Genetic studies that could reveal specific genetic differences due to metal pollution would therefore be ideal, however, such attempts have not demonstrated any clear genetic differences in D. octaedra populations from copper polluted (including Gusum) and reference soils (Simonsen et al 2008;Knott and Haimi 2010). Only a handful of genes were investigated in these studies suggesting that chances of detecting responsive genes were relatively small.…”
Section: Discussionmentioning
confidence: 96%
“…However, since the F1-generation has been used some contribution to the differences between populations from contaminated and reference sites could come from maternal effects (Mousseau and Fox 1998). Genetic studies that could reveal specific genetic differences due to metal pollution would therefore be ideal, however, such attempts have not demonstrated any clear genetic differences in D. octaedra populations from copper polluted (including Gusum) and reference soils (Simonsen et al 2008;Knott and Haimi 2010). Only a handful of genes were investigated in these studies suggesting that chances of detecting responsive genes were relatively small.…”
Section: Discussionmentioning
confidence: 96%
“…In Dendrobaena octaedra , for example, haplotype diversity ranges 0–0.6444 in invasive populations in Alberta, Canada (Cameron et al. ) and from 0.242 to 0.917 in populations of the same species in its European native range (Knott & Haimi ). Although low, the levels of haplotype diversity in many of the invasive parthenogenetic populations of D. octaedra are greater than 0 and thus suggest multiple independent introductions or the single introduction of a large number of worms from a diverse source population (Cameron et al.…”
Section: Discussionmentioning
confidence: 99%
“…Recently, numerous molecular phylogenetic studies on earthworms have been conducted (Jamieson et al, 2002;Pop et al, 2003Pop et al, , 2007Heethoff et al, 2004;Pérez-Losada et al, 2005Chang et al, , 2007Chang et al, , 2008Chang et al, , 2009Admassu et al, 2006;Huang et al, 2007;King et al, 2008;Cameron et al, 2008;Minamiya et al, 2009;Richard et al, 2009;Novo et al, 2009Novo et al, , 2010Knott and Haimi, 2010). Many of these studies used the mitochondrial DNA (mtDNA) cytochrome oxidase subunit I (COI) gene (Pop et al, 2003(Pop et al, , 2007Pérez-Losada et al, 2005Admassu et al, 2006;Chang et al, 2007Chang et al, , 2008Chang et al, , 2009Huang et al, 2007;King et al, 2008;Cameron et al, 2008;Minamiya et al, 2009;Rougerie et al, 2009;Novo et al, 2009Novo et al, , 2010Knott and Haimi, 2010) because of the ease of primer design and the range of phylogenetic signals and rapid evolutionary rate of this gene (Hebert et al, 2003). To clarify the phylogenetic relationships of A. vittatus with different degree of degraded reproductive organs, we examined the morphological variations, such as the possession rate of both the male and spermathecal pores in A. vittatus found in various locations in Sendai city around Mt.…”
Section: Introductionmentioning
confidence: 99%