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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Note: This paper has been retracted by the journal.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.
The widespread occurrence and accumulation of plastic waste in the environment have become a growing global concern over the past decade. Although some marine organisms have been shown to ingest plastic, few studies have investigated the ecological effects of plastic waste on animals. Here we show that exposure to environmentally relevant concentrations of microplastic polystyrene particles (90 micrometers) inhibits hatching, decreases growth rates, and alters feeding preferences and innate behaviors of European perch (Perca fluviatilis) larvae. Furthermore, individuals exposed to microplastics do not respond to olfactory threat cues, which greatly increases predator-induced mortality rates. Our results demonstrate that microplastic particles operate both chemically and physically on larval fish performance and development.
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RETRACTED: Developmental toxicity in zebrafish exposed to polyethylene microplastics under static and semi-static aquatic systems
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Researchers evaluated the developmental toxicity of polyethylene microplastics on zebrafish embryos and larvae under both static and semi-static exposure conditions. They found that even low concentrations of microplastics negatively affected hatching rates and caused morphological changes, with the type of exposure system influencing the severity of effects. Note: this paper has been retracted by the journal.
Effect of microplastics on the early life stages of marine fish
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This thesis reviews experimental studies on the effects of micro- and nanoplastics on the early life stages of marine fish, assessing evidence for developmental toxicity, behavioral changes, and impaired growth. The review addresses the environmental relevance of laboratory exposure concentrations and uncertainties in translating lab findings to real-world fish populations.
Environmentally relevant concentrations of microplastics modulated the immune response and swimming activity, and impaired the development of marine medaka Oryzias melastigma larvae
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Researchers found that environmentally relevant concentrations of microplastics impaired immune responses, swimming behavior, and larval development in marine medaka fish, demonstrating that even low-level exposure poses ecological risks.
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.
RETRACTED: Assessment of polystyrene microplastics as dietary additives in aquaculture species, Catla catla: Alters growth, feed utilization, nutritional composition, hematology and gut histopathology
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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.
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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.