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

[Mikhail Matz]

My understanding is that one coral colony typically contains just a single major clone of symbiodinium (although there are exceptions of course). Todd LaJeunesse can confirm. 

iPhone. Autocorrections galore.

> On Jun 18, 2018, at 4:51 AM, Thomas Krueger <thomas.krueger at epfl.ch> wrote:
> 
> Hi,
> 
> I am looking for literature on the degree of genetic connectivity of the Symbiodinium population within single coral colonies. The awesome Kemp et al. 2015 (Coral Reefs 34:535-547) publication has provided nice ITS2 landscape maps of mixed holobionts, but I am more interested whether anyone has tried to create a basal ancestry map of the Symbiodinium population within a colony that hosts more or less a single Symbiodinium species/ITS2 type. There is a high degree of physiological variability within the population down to small-scale variations in nutrient assimilation efficiency due to e.g. light gradients (Wangpraseurt et al. 2016 ISME 10, 788-792) and I started to wonder how far do islands of clonal Symbiodinium descendants within a colony reach. Are they really limited by the vacuole boundary of the host cell (now one leaves their home cell)? On the other side, I am fairly we sure we do not assume that a single coral hosts a single clonal population of an individual of Symbiodinium. Thanks a lot!
> 
> Regards,
> 
> Thomas
> -- 
> --
> Thomas Krueger Postdoctoral Researcher
> Laboratory for Biological Geochemistry | École polytechnique fédérale de Lausanne (EPFL)
> P: (+41) 21 69 38039
>  
> 
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