Microplastics as an aquatic pollutant affect gut microbiota within aquatic animals

Area of Science:

• Environmental Science
• Microbiology
• Aquatic Toxicology

Background:

• Microplastics (MPs) pose a growing threat to aquatic ecosystems.
• The ingestion of MPs by aquatic organisms is a primary concern.
• The impact of MPs on gut microbiota is complex, influenced by associated chemicals and biofilms.

Purpose of the Study:

• To review the effects of microplastic ingestion on the gut microbiota of aquatic animals.
• To analyze the roles of chemical components (plastic polymers, heavy metals, POPs) and biofilms in MP toxicity.
• To highlight future research directions for understanding MP-gut microbiota interactions.

Main Methods:

• Literature review of existing studies on microplastics and aquatic gut microbiota.
• Analysis of chemical compositions and biofilm formation on microplastics.
• Synthesis of data on the impacts of MPs on aquatic organisms' gut microbial communities.

Main Results:

• Microplastic ingestion leads to adverse effects on gut microbiota in aquatic animals.
• Chemicals adsorbed onto MPs, including heavy metals and POPs, contribute to toxicity.
• Biofilm formation on MPs further modifies their ecological impact.

Conclusions:

• Understanding the combined effects of chemicals and biofilms on gut microbiota is crucial for assessing MP risks.
• Future research should focus on field studies, functional analyses, and the complex dynamics of gut microbial ecology.
• Comprehensive studies are needed to fully grasp the consequences of microplastic pollution on aquatic life.