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The effect of microplastics on the growth of Paralichthys Olivaceus
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Researchers exposed juvenile olive flounder, a commercially important aquaculture fish, to polystyrene microplastics and found that while body length growth was unaffected, the plastic exposure caused other physiological responses. Understanding how microplastics affect farmed fish health is important for assessing food safety risks in aquaculture.
In recent years, microplastics (MPs) pollution have become a global environmental issue, which aroused concern about their potential toxicity to marine organisms. However, due to the gradual depletion of natural resources, it had been rapidly developed in aquaculture. Therefore, this article studied the effect of polystyrene (PE) on the growth of Paralichthys Olivaceus . The surface of PE was rough and average size was 197.3 ± 11.2 μm. The contact angle of PE was 100.3 ± 2.5 °, which indicated that PE had a hydrophobic surface. PE exposure had no significant effect on the body length growth of fish, but compared with CK treatment, the weight growth of fish in PE treatment group was slower, which increased by 36.3% on the 28th day, but only increased by 10.9% in PE treatment group, indicating that PE could inhibit the growth of fish. PE led to the decrease of oxygen consumption rate of fish. On the 7th, 21st and 28th day, the oxygen consumption rate of fish decreased by 7.9%, 25.4% and 41.1%, respectively. Based on the above results, we concluded that marine MPs could inhibit the growth of the benthic economic fish, which would disturb the balance of the marine ecosystem.
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The Effect of Exposure to Polystyrene Microplastics in Feed on the Growth of Tilapia (Oreochromis niloticus)
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This study exposed tilapia fish to polystyrene microplastics mixed into their feed at different concentrations. The results showed that microplastic exposure negatively affected the growth and development of the fish. This is relevant to human health because tilapia is a widely consumed fish, and microplastics accumulating in farmed fish could be passed along to the people who eat them.
Effect of Polyvinyl Chloride and Polystyrene Micro-Plastics on Growth, Digestive Enzymes, Oxidative Stress, and DNA Damage in Ctenopharyngodon idella.
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Fish fed diets containing common plastic particles (from PVC and polystyrene, found in packaging and household items) grew significantly slower, showed signs of cell stress, and had more DNA damage compared to fish without plastic exposure—and these effects got worse with higher plastic doses. Since these fish are a food source, this research is a reminder that microplastics polluting our waterways don't just harm aquatic life—they raise questions about what ends up on our plates, too.
WATERBORNE POLYSTYRENE MICROPLASTIC EXPOSURE DEPRESSES GROWTH PERFORMANCE OF SIAMESE FIGHTING FISH (Betta splendens)
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Researchers exposed Siamese fighting fish to waterborne polystyrene microplastics at concentrations up to 150 mg/L for 45 days and found significant, dose-dependent reductions in length and weight gain, with no mortality, confirming sublethal growth suppression as a relevant stressor in ornamental aquaculture.
Polystyrene microplastics exposure in freshwater fish, Labeo rohita: evaluation of physiology and histopathology
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Researchers fed freshwater fish varying levels of polystyrene microplastics for 90 days and found dose-dependent damage to blood health, growth, and organ tissues. Higher microplastic concentrations caused more severe harm to the liver, kidneys, gills, and intestines. The study highlights that microplastics in freshwater systems can accumulate in fish and cause significant health problems, raising concerns about food safety for communities that rely on freshwater fish.
Decreased growth and survival in small juvenile fish, after chronic exposure to environmentally relevant concentrations of microplastic
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Researchers exposed juvenile glassfish to environmentally realistic concentrations of both virgin and harbor-collected microplastics for 95 days, finding that fish in plastic-fed groups grew significantly less in length, depth, and mass, and had lower survival probability than controls.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.