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

[Thomas Krueger]

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

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*--*

*Thomas Krueger */Postdoctoral Researcher/

Laboratory for Biological Geochemistry | École polytechnique fédérale de 
Lausanne (EPFL)

*P*: (+41) 21 69 38039