I am working on a large comparative dataset of gut microbiomes and I want to make a statement regarding the importance of sampling both fish gut microbiomes and mammalian gut microbiomes.
I basically want to stress the importance of sampling host taxa so distantly related but am unsure how to word it correctly. Would this be a correct statement?
Fish represent one of the most distantly related vertebrate taxa in terms of evolutionary divergence from terrestrial vertebrates, and preside in an aquatic environment that more closely resembles the environment and ecology likely inhabited by vertebrate ancestors circa 365 mya.
I also cannot seem to find any papers discussing this as it seems to be unresolved when fish and terrestrial vertebrates diverged.
Any info would be much appreciated.