Investigating the origin of parthenogenesis and ploidy level in Dahlica fennicella (Lepidoptera: Psychidae)
Chevasco, V., Elzinga, J. A., Galarza, J., Mappes, J., & Grapputo, A. (2013). Investigating the origin of parthenogenesis and ploidy level in Dahlica fennicella (Lepidoptera: Psychidae). Annales Zoologici Fennici, 50(3), 125-145. https://doi.org/10.5735/086.050.0301
Published inAnnales Zoologici Fennici
© Finnish Zoological and Bothanical Publishing Board, 2013
The theories for the predominance of sexual reproduction predict that parthenogens should have no long-term evolutionary potential due to the lack of genetic recombination, despite short term advantages. Although parthenogenesis is rare among high order animals, true parthenogens can be found in various taxa. The intriguing question of the proliferation and persistence of parthenogenetic species needs investigation. An ideal species for such research is a parthenogenetic mont Dahlica fennicella that appears to be as equally successful as other coexisting sexual species. We investigated whether high ploidy level of D. fennnicella is due to hybridization between closely related sexual species. The results form flow cytometry measurements confirmed that D. fennicella is exclusively tetraploid whereas all sexual species of the genera Dahlica and Siederia are diploid. Our phylogenentic results showed the non-hybrid origin of the parthenogenetic D. fennicella in this group of Lepidoptera. Most likely, the parthenogenetic D. fennicella orginated by autopolyploidization of D. lazuri, which is one of its closely related sexual species. We suggest that the apparent evolutionary success of D. fennicella might be due to polyploidy that could mask deleterious mutuations and probide greater levels of genetic variations. ...
PublisherFinnish Zoological and Botanical Publishing Board
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