Evidence for coral range expansion accompanied by reduced diversity of Symbiodinium genotypes

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Date
2017
Authors
Grupstra, Carsten G. B.
Coma, Rafel
Ribes, Marta
Leydet, Karine Posbic
Parkinson, John Everett
McDonald, Kelly
Catllà, Marc
Hellberg, Michael E.
Coffroth, Mary Alice
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Coral Reefs ; 36 (2017), 3. - pp. 981-985. - Springer. - ISSN 0722-4028. - eISSN 1432-0975
Abstract
Zooxanthellate corals are threatened by climate change but may be able to escape increasing temperatures by colonizing higher latitudes. To determine the effect of host range expansion on symbiont genetic diversity, we examined genetic variation among populations of Symbiodinium psygmophilum associated with Oculina patagonica, a range-expanding coral that acquires its symbionts through horizontal transmission. We optimized five microsatellite primer pairs for S. psygmophilum and tested them on Oculina spp. samples from the western North Atlantic and the Mediterranean. We then used them to compare symbiont genotype diversity between an Iberian core and an expansion front population of O. patagonica. Only one multilocus S. psygmophilum genotype was identified at the expansion front, and it was shared with the core population, which harbored seven multilocus genotypes. This pattern suggests that O. patagonica range expansion is accompanied by reduced symbiont genetic diversity, possibly due to limited dispersal of symbionts or local selection.
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Subject (DDC)
570 Biosciences, Biology
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Oculina patagonica, Symbiodinium psygmophilum, Zooxanthellae, Microsatellites, Climate change, Symbiosis
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Cite This
ISO 690GRUPSTRA, Carsten G. B., Rafel COMA, Marta RIBES, Karine Posbic LEYDET, John Everett PARKINSON, Kelly MCDONALD, Marc CATLLÀ, Christian R. VOOLSTRA, Michael E. HELLBERG, Mary Alice COFFROTH, 2017. Evidence for coral range expansion accompanied by reduced diversity of Symbiodinium genotypes. In: Coral Reefs. Springer. 36(3), pp. 981-985. ISSN 0722-4028. eISSN 1432-0975. Available under: doi: 10.1007/s00338-017-1589-2
BibTex
@article{Grupstra2017-09Evide-51142,
  year={2017},
  doi={10.1007/s00338-017-1589-2},
  title={Evidence for coral range expansion accompanied by reduced diversity of Symbiodinium genotypes},
  number={3},
  volume={36},
  issn={0722-4028},
  journal={Coral Reefs},
  pages={981--985},
  author={Grupstra, Carsten G. B. and Coma, Rafel and Ribes, Marta and Leydet, Karine Posbic and Parkinson, John Everett and McDonald, Kelly and Catllà, Marc and Voolstra, Christian R. and Hellberg, Michael E. and Coffroth, Mary Alice}
}
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