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4. Evolution and dynamics of clonal genomes in marine populations

Session organizers:

Ricardo Pereyra, University of Gothenburg.
Kerstin Johannesson, University of Gothenburg.
Marina Rafajlovic, University of Gothenburg.

Contact E-mail: ricardo.pereyra@marine.gu.se


In the debate of the benefits of sex, questions about the longevity of asexuals arise. How do asexual genomes survive? No asexual individual will be free of harmful mutations, unless the population it belongs to is very large. Therefore, it is expected that the mean fitness of an asexual population will decrease in time and should eventually become extinct. However, despite these arguments, asexual lineages of numerous taxa persist, and some even with rather ancient lineages.

The advances of molecular technologies have improved our ability to detect mutational changes and open up the possibility to quantify the genetic variability in asexual populations at high inter- and intraclonal resolution. Recent molecular studies have emphasized the levels of intraclonal genetic variation, the vast majority in unicellular organisms with a handful of multicellular ones.

In this session, we seek to bring together research that improves our understanding on the evolution of clonal genomes, clonal population dynamics and their adaptive potential in multicellular organisms. Contributions that examine intraclonal genetic variation and interclonal evolutionary history in marine/aquatic natural populations are particularly encouraged.


Presentations:

Sophie Arnaud-Haond - Empirical test of the theoretically expected interplay between partial clonality and the genetic composition of natural populations, based on 165 meadows of four, increasingly long-lived, seagrass species

Galice Hoarau - Epigenetic variation in seagrass clones - key to success without epigenetic variation?

Ricardo Pereyra - What’s in a clone? That which we call a clone, by any other genotype, would be as a clone?

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Page Manager: Eva Marie Rödström|Last update: 3/5/2018
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