Marion Siegwald

ORCID: 0000-0003-4915-9541
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About
Contact & Profiles
Research Areas
  • Evolution and Genetic Dynamics
  • Plant and animal studies
  • Insect and Arachnid Ecology and Behavior

Institut de Systématique, Évolution, Biodiversité
2019

École Pratique des Hautes Études
2019

Centre National de la Recherche Scientifique
2019

Muséum national d'Histoire naturelle
2018

We report the reproductive strategy of nematode Mesorhabditis belari This species produces only 9% males, whose sperm is necessary to fertilize and activate eggs. However, most fertilized eggs develop without using DNA produce female individuals. Only in male utilized, producing sons. found that mixing parental genomes gives rise males because Y-bearing are much more competent than X-bearing for penetrating In this previously unrecognized strategy, asexual females few sexual genes never...

10.1126/science.aau0099 article EN Science 2019-03-14

Summary In pseudogamous species, females use the sperm of males from another species to activate their oocytes and produce females, without using DNA. Here we report a novel reproductive strategy found in nematode Mesorhabditis belari , which produces its own at low frequency. We find that 8% M. are necessary fertilize all but pass on genes only males, never females. Thus, production has no impact genetic diversity Using game theory, show frequency constitutes an efficient if sons more...

10.1101/449710 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2018-10-22
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