Outstanding intraindividual genetic diversity in fissiparous planarians 
(Dugesia, Platyhelminthes) with facultative sex.

Leria, L.; Vila Farre, M.; Solà, E.; Riutort, M.

doi:10.1186/s12862-019-1440-1

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Outstanding intraindividual genetic diversity in fissiparous planarians (Dugesia, Platyhelminthes) with facultative sex.

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Vila Farre, M.
Department of Tissue Dynamics and Regeneration, MPI for Biophysical Chemistry, Max Planck Society;

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Citation

Leria, L., Vila Farre, M., Solà, E., & Riutort, M. (2019). Outstanding intraindividual genetic diversity in fissiparous planarians (Dugesia, Platyhelminthes) with facultative sex. BMC Evolutionary Biology, 19: 130. doi:10.1186/s12862-019-1440-1.

Cite as: https://hdl.handle.net/21.11116/0000-0005-854B-1

Abstract

Predicted genetic consequences of asexuality include high intraindividual genetic diversity (i.e., the Meselson effect) and accumulation of deleterious mutations (i.e., Muller’s Ratchet), among others. These consequences have been largely studied in parthenogenetic organisms, but studies on fissiparous species are scarce. Differing from parthenogens, fissiparous organisms inherit part of the soma of the progenitor, including somatic mutations. Thus, in the long term, fissiparous reproduction may also result in genetic mosaicism, besides the presence of the Meselson effect and Muller’s Ratchet. Dugesiidae planarians show outstanding regeneration capabilities, allowing them to naturally reproduce by fission, either strictly or combined with sex (facultative). Therefore, they are an ideal model to analyze the genetic footprint of fissiparous reproduction, both when it is alternated with sex and when it is the only mode of reproduction.