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1 August 2005 Disturbed Population Genetics: Suspected Introgressive Hybridization between Two Mnais Damselfly Species (Odonata)
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Abstract

Mnais costalis and M. pruinosa are damselflies (Odonata: Calopterygidae) with low dispersal abilities, both during their aquatic stream-living immature stage and their flying adult stage. A previous nuclear DNA (nDNA) sequencing and morphology study showed that these two species are very closely related, and cohabit widely in western Japan. The two species, however, segregate microhabitats along a stream: M. costalis lives in the lower reaches, and M. pruinosa in the upper reaches. In this study, our analyses were based on mitochondrial DNA (mtDNA), which usually mutates faster and is more variable among individuals than nDNA, and which is inherited maternally. We found that most COI haplotypes were shared between the two species, and that for most study sites interspecific riverine genetic structures were not clarified by mtDNA analysis. Incongruent population genetic structures based on nDNA and mtDNA suggested hybridization and introgression of mtDNA between the two species.

Fumio Hayashi, Shigeto Dobata, and Ryo Futahashi "Disturbed Population Genetics: Suspected Introgressive Hybridization between Two Mnais Damselfly Species (Odonata)," Zoological Science 22(8), 869-881, (1 August 2005). https://doi.org/10.2108/zsj.22.869
Received: 23 September 2004; Accepted: 1 June 2005; Published: 1 August 2005
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