Sebastosomus
In collaboration with Dr. Andres Aguilar at Cal State LA, we are investigating the genomic signature of environmental adaptation in 5 closely related rockfish in the subgenus Sebastasomus. We have developed the ddRADseq method for all five species to confirm the phylogenic associations and degree of divergence. With the help of our undergraduate researcher, Emma Wallace, we are currently now analyzing those data to investigate the relationships among these five species. This will be a focus for one of our future grants that address parallel evolution of these species along a environmental gradient extending from British Columbia to southern California.
ML tree using mtDNA 309 bps of control region sequence data for the rockfish subgenus Sebastosomus (S. alutus and S. marinus are the outgroups)
Map of the approximate distribution of all 5 species of the Sebastosomus group. * indicated samples collected indicates locations that we are targeting for samples. Lower map shows some of the environmental features that change along this region of overlap including sea surface temperature (SST), upwelling index, and dispersal barriers (indicated by arrows).