Fig. 1

Chromosome distribution of the AQP family members in different oysters. The complete set of the AQP genes were de novo identified based on the genome assemblies. The tandem duplicated orthologs were separated by appending a “.1” and “.2” at the end of the names. The pseudogenized AQPs were appended with a “ψ” at the front of the gene names and marked with red. The members clustered into the classical AQP subfamily were marked with blue. The members clustered into the Glp subfamily were marked with orange. The members clustered into the AQP8 subfamily were marked with green. The members clustered into the unorthodox AQP subfamily were marked with black