Host-symbiont interactionsAquatic microbial symbiosesMutualismAnthropogenic disturbancesECO-EVOLUTIONARY DYNAMICSINTESTINAL ENZYME-ACTIVITIESFED GRADED-LEVELSGUT MICROBIOTAENVIRONMENTAL CONCENTRATIONSPHENOTYPIC PLASTICITYBACTERIAL COMMUNITIESOCEAN ACIDIFICATIONSALINITY TOLERANCEINFECTIOUS-DISEASE