The many faced symbiotic snakelocks anemone (Anemonia viridis, Anthozoa): host and symbiont genetic differentiation among colour morphs
Voolstra, Christian R.
KAUST DepartmentRed Sea Research Center (RSRC)
Marine Science Program
Biological and Environmental Sciences and Engineering (BESE) Division
Online Publication Date2019-09-16
Print Publication Date2020-02
Embargo End Date2020-03-16
Permanent link to this recordhttp://hdl.handle.net/10754/656855
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AbstractHow can we explain morphological variations in a holobiont? The genetic determinism of phenotypes is not always obvious and could be circumstantial in complex organisms. In symbiotic cnidarians, it is known that morphology or colour can misrepresent a complex genetic and symbiotic diversity. Anemonia viridis is a symbiotic sea anemone from temperate seas. This species displays different colour morphs based on pigment content and lives in a wide geographical range. Here, we investigated whether colour morph differentiation correlated with host genetic diversity or associated symbiotic genetic diversity by using RAD sequencing and symbiotic dinoflagellate typing of 140 sea anemones from the English Channel and the Mediterranean Sea. We did not observe genetic differentiation among colour morphs of A. viridis at the animal host or symbiont level, rejecting the hypothesis that A. viridis colour morphs correspond to species level differences. Interestingly, we however identified at least four independent animal host genetic lineages in A. viridis that differed in their associated symbiont populations. In conclusion, although the functional role of the different morphotypes of A. viridis remains to be determined, our approach provides new insights on the existence of cryptic species within A. viridis.
CitationPorro, B., Mallien, C., Hume, B. C. C., Pey, A., Aubin, E., Christen, R., … Forcioli, D. (2019). The many faced symbiotic snakelocks anemone (Anemonia viridis, Anthozoa): host and symbiont genetic differentiation among colour morphs. Heredity, 124(2), 351–366. doi:10.1038/s41437-019-0266-3
SponsorsThis work was supported by the ANR Bioadapt research program “AdaCni” (ANR-12-ADAP-0016) as a Ph.D. grant to CM and by a doctoral fellowship from the French Ministère de l’Enseignement supérieur et de la Recherche to BP. We thank J. Wiedenmann, P. Ventura, A. Haguenauer, R. Rodolpho-Metalpa, IMBE and M. Wanguemert for their contribution to the sampling effort. We also thank P.-A. Gagnaire and L. Sromek for the RADseq individual tags; P. Barbry from IPMC who gave us the authorization to use the CovarisB sonicator and V. Magnone and M.-J. Arguel for their help during its utilization.