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Enhanced Fish Feeding Tendency toward Poly(vinyl chloride) Microplastics Colonized by Luminescent Bacteria
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Researchers found that fish showed enhanced feeding tendency toward PVC microplastics colonized by specific biofilm communities, suggesting that the microbial coating makes plastic particles more attractive as food, potentially increasing voluntary ingestion of microplastics by fish in natural environments.
Luminescent bacteria can colonize the surfaces of microplastics (MPs), where the bacteria emit light, potentially promoting fish feeding tendency to MPs. The present study evaluated biofilm formation and bioluminescence of a marine bacterium on poly(vinyl chloride) MPs and examined the predative behavior of fish Sphaeramia nematoptera toward glowing and nonglowing MPs. Biofilm formation was significantly higher on UV-aged MPs than on pristine MPs, ethanol-washed MPs, and silica sand. Microplastics and their leachates enhanced the bioluminescence of the bacteria with maximum increases of 60% and 70% for pristine and UV-aged MPs, respectively, primarily driven by Ca2+ release. Behavioral assays showed that fish preferentially fed on glowing MPs, indicating that bioluminescence enhanced the visibility and attractiveness of MPs. These findings suggest that interactions between MPs and luminescent bacteria may boost the tendency of fish to feed on MPs, raising concerns about their potential accumulation in marine food webs.
More Papers Like This
Enhanced FishFeeding Tendency toward Poly(vinyl chloride)Microplastics Colonized by Luminescent Bacteria
AI summary Read the abstract
Researchers found that luminescent marine bacteria colonizing poly(vinyl chloride) microplastics enhance fish feeding tendency toward those particles, with bioluminescence increasing by up to 60% in the presence of microplastics and their leachates. UV-aged microplastics showed significantly higher biofilm formation than pristine or washed particles, and fish demonstrated greater predatory behavior toward glowing compared to non-glowing microplastics.
Enhanced FishFeeding Tendency toward Poly(vinyl chloride)Microplastics Colonized by Luminescent Bacteria
AI summary Read the abstract
Researchers found that luminescent marine bacteria colonizing poly(vinyl chloride) microplastics enhance fish feeding tendency toward those particles, with bioluminescence increasing by up to 60% in the presence of microplastics and their leachates. UV-aged microplastics showed significantly higher biofilm formation than pristine or washed particles, and fish demonstrated greater predatory behavior toward glowing compared to non-glowing microplastics.
Enhanced FishFeeding Tendency toward Poly(vinyl chloride)Microplastics Colonized by Luminescent Bacteria
AI summary Read the abstract
Researchers found that luminescent marine bacteria colonizing poly(vinyl chloride) microplastics enhance fish feeding tendency toward those particles, with bioluminescence increasing by up to 60% in the presence of microplastics and their leachates. UV-aged microplastics showed significantly higher biofilm formation than pristine or washed particles, and fish demonstrated greater predatory behavior toward glowing compared to non-glowing microplastics.
Enhanced FishFeeding Tendency toward Poly(vinyl chloride)Microplastics Colonized by Luminescent Bacteria
AI summary Read the abstract
Researchers found that luminescent marine bacteria colonizing poly(vinyl chloride) microplastics enhance fish feeding tendency toward those particles, with bioluminescence increasing by up to 60% in the presence of microplastics and their leachates. UV-aged microplastics showed significantly higher biofilm formation than pristine or washed particles, and fish demonstrated greater predatory behavior toward glowing compared to non-glowing microplastics.
Microplastic pollution in aquatic environments may facilitate misfeeding by fish
AI summary Read the abstract
Researchers found that biofilm formation on microplastic surfaces in freshwater environments facilitates fish misidentification of plastics as food, with the probability of capture increasing significantly as biofilm aging progressed over weeks.
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