Seminar Details

Genomic Islands in the Caribbean Sea




Prof. Oscar Puebla - GEOMAR Helmholtz Centre for Ocean Research Kiel


Recent evolutionary radiations such as Darwin’s finches, East African cichlids or Heliconius butterflies have served as model systems to understand how novel variation and new species arise. These systems, clearly in the early stages of divergence, have stimulated research into the behavioral, ecological, and genetic bases of reproductive isolation that have arguably transformed our understanding of the origins of biodiversity. However, no analogous radiation comes to mind in the largest ecosystem on earth, the ocean. The hamlets (Hypoplectrus spp, Serranidae), simultaneously hermaphroditic reef fishes from the wider Caribbean, provide a marine equivalent to the classic terrestrial and freshwater radiations that promises to promote our understanding of adaptive evolution in the oceans. I will present the yet unpublished hamlet genome complemented by a large-scale population genomic analysis of speciation in the group and a detailed study of ecomorphological divergence in Bocas del Toro (Panama).

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