[Coral-List] genetic connectivity of Symbiodinium individuals within a single colony

[Jean-François Flot]

Hi Thomas,

There are some exceptions: in a previous study of Symbiodinium diversity 
in pocilloporid corals, Hélène Magalon, Emmanuelle Baudry and I found 
several divergent Symbiodinium types co-occurring in the same coral 
fragment. Here is the reference of that paper:
Magalon H, Flot J-F, Baudry E (2007) Molecular identification of 
symbiotic dinoflagellates in Pacific corals in the genus Pocillopora. 
Coral Reefs 26:551-558

Cheers from Belgium,
Jean-François


On 19/06/2018 11:12, Thomas Krueger wrote:
> Hi everyone,
> 
> thanks a lot for all the feedback and papers that were sent to me. It
> turns out I am dead wrong. There is indeed a lot of data that
> demonstrates that most colonies harbour only a single Symbiodinium genet
> (i.e. a clonal population of a single individual), which I find
> fascinating. It also means for those of you out there doing competition
> experiments in culture, make sure you have a monoclonal culture of your
> strain ;-). Otherwise your observed superior or inferior population
> performance over other strains (or cell lines of the same strain) could
> be simply the population outcome of a mixed genotype culture (i.e.
> multiple individuals). Here is some of the relevant literature I have
> received:
> 
> Goulet and Coffroth 2003, Genetic composition of zooxanthellae between
> and within colonies of the octocoral Plexaura kuna, based on small
> subunit rDNA and multilocus DNA fingerprinting. Marine Biology
> 
> Goulet and Coffroth 2003, Stability of an octocoral-algal symbiosis over
> time and space. Marine Ecology Progress Series
> 
> Parkinson et al. 2015, Intraspecific diversity among partners drives
> functional variation in coral symbioses. Scientific Reports
> 
> Parkinson and Baums 2014, The extended phenotypes of marine symbioses:
> ecological and evolutionary consequences of intraspecific genetic
> diversity in coral–algal associations. Frontiers in Microbiology
> *[Excellent review]*
> 
> Baums et al. 2014, New insights into the dynamics between reef corals
> and their associated dinoflagellate endosymbionts from population genetic
> studies. Molecular Ecology
> 
> Pettay et al. 2011, Genotypic diversity and spatial–temporal
> distribution of Symbiodinium clones in an abundant reef coral. Molecular
> Ecology
> 
> Thornhill et al. 2017 Population genetics of reef coral endosymbionts
> (Symbiodinium, Dinophyceae). Molecular Ecology
> 
> All the best,
> 
> Thomas
> 


-- 
Jean-François Flot
Associate Professor
Evolutionary Biology & Ecology - C.P. 160/12
Université Libre de Bruxelles
Avenue F.D. Roosevelt 50
B-1050 Brussels - Belgium
http://ebe.ulb.ac.be/ebe/Flot.html