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RETRACTED ARTICLE: An assessment of physiological and health responses in Catla catla fingerlings after polystyrene microplastic exposure
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Note: This article has been retracted. The study reported that feeding polystyrene microplastics to Catla catla fish reduced growth, impaired blood health, decreased nutritional quality, and caused intestinal damage. Higher concentrations of microplastics led to worse outcomes across all measures. While the retraction means these specific results should be viewed with caution, the general concern about microplastic effects on farmed fish remains supported by other research.
Microplastics (MPs) form when plastic debris is released into the aquatic environment, where they decompose and have deleterious effects on aquatic life. This study aimed to examine the harmful impacts of polystyrene MPs (PS-MPs) on the growth, carcass composition, hematology, digestibility, histopathology, and mineral analysis of Catla catla (11.09 ± 0.09 g/fish). Six experimental diets were prepared using canola meal (CM) as the base, each containing varying levels of PS-MPs: a control diet without MPs, and diets with 0.5%, 1%, 1.5%, 2%, and 2.5% PS-MPs. For ninety days, three groups of 15 fingerlings each were fed the test diets at a rate of 5% of their live, wet body weight. The growth rate and feed intake of C. catla fish showed a significant decline after the exposure to the diet containing 2.5% PS-MPs. Dietary inclusion of 2.5% PS-MPs resulted in reduced weight gain (g) and increased FCR. Mineral content and nutritional digestibility declined as PS-MP levels rose. PS-MPs led to a decrease in ash and protein content, while causing an increase in moisture levels and body fat. Moreover, exposure to PS-MPs resulted in significant reduction in RBCs, PLT, Hb, PCV, and MCHC, while WBCs, MCH, and MCV showed substantial increases. The histological analysis of the gut revealed elevated intestinal irregularities at 2.5% PS-MPs level. Notably, the present study revealed that PS-MPs accumulate in the gut, compromising the nutritional quality and overall well-being of C. catla fingerlings.
More Papers Like This
RETRACTED: Assessment of polystyrene microplastics as dietary additives in aquaculture species, Catla catla: Alters growth, feed utilization, nutritional composition, hematology and gut histopathology
AI summary Read the abstract
Note: This paper has been retracted. It reported that feeding polystyrene microplastics to a freshwater fish species reduced growth, nutritional quality, and caused gut damage in a dose-dependent manner. While the specific findings should be treated with caution due to the retraction, the general concern about microplastics accumulating in aquaculture fish and affecting their nutritional value and safety for human consumption remains supported by other research.
Retraction Note: An assessment of physiological and health responses in Catla catla fingerlings after polystyrene microplastic exposure
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This is a retraction notice for a study on polystyrene microplastic exposure in Catla catla fish, withdrawn after data irregularities were identified, including figures that appeared to be reused from other papers representing different conditions or species. The retraction underscores the importance of data integrity in microplastics research, where replication and accuracy are critical.
RETRACTED: Environmentally relevant concentrations of microplastic particles influence larval fish ecology
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Note: This paper has been retracted by the journal. The original study claimed that microplastic exposure at environmental levels harmed larval fish development and behavior, but the findings were later deemed unreliable. Retracted studies should not be used as evidence for microplastic health effects, though the topic of microplastic impacts on early-life fish development continues to be studied by other research groups.
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.
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