Developing a Philosophical Foundation for the Study of the Microbial Side of Symbiosis

Symbiotic associations have been studied extensively in recent years, focusing mainly on the potential benefits to host. However, understanding role played by microorganisms physiology and fitness of host, an aspect subject that had neglected for a long time, has now become important goal symbiotic studies. Among interesting philosophical questions are following: how should we study impact symbiosis microorganisms? What framework scientists use, what assumptions such research be based? In other words, when does comparing make sense? this paper, I develop framework, argue these requirements comprise: (i) phenotypically similar individuals put same (ii) sub-environment contrast it with another popular approach. Finally, apply between Euprymna scolopes squid Vibrio fischeri bacteria show evaluate microorganisms.