Friday seminar: Genomic islands in the Caribbean Sea

By Oscar Puebla from the GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany

Abstract

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 our hamlet genome assembly, preliminary population genomic analyses of local adaptation and speciation in the group, and a suite of behavioural and  ecomorphological data from Bocas del Toro (Panama).

Oscar Puebla
GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany

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Published Oct. 9, 2016 11:15 PM - Last modified Nov. 1, 2016 3:20 PM