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Sex‐specific effects of PET‐MPs onDrosophilalifespan
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Researchers found that PET microplastic exposure has sex-specific effects on fruit fly lifespan, with low concentrations actually prolonging male lifespan through a possible hormesis effect, while significant interactions between sex and microplastic concentration were observed.
In recent years, as an emerging pollutant, microplastic (MPs) pollution is gradually becoming a research hotspot. MPs are ubiquitous in the entire ecological environment. Organisms can be exposed to MPs via inhalation or ingestion. In view of the widespread of MPs pollution, the impact of MPs on biology should be further investigated. In previous experiments, we have conducted research on the physiology of Drosophila exposed to polyethylene terephthalate microplastics (PET-MPs). However, will the lifespan of Drosophila be affected under long-term PET-MPs exposure? The analysis of variance analysis of our experimental results indicates that there are significant differences between males and females, F(1, 895) = 68.19, p < 0.001, between PET-MPs concentration, F(3, 895) = 8.11, p < 0.001. There are also significant interactions between sex and MP concentration, F(3, 895) = 4.00, p < 0.01. For Cox and log-rank test, 1 g/L of PET-MPs prolongs the lifespan of male flies. The reason for this phenomenon may be the hormesis effect.
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Sex Specific Effects of PET-MPs On Drosophila Lifespan
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This study examined whether sex affected how fruit flies (Drosophila) responded to PET microplastic exposure, finding that females lived longer than males when exposed to the same concentrations. Microplastics shortened lifespan in exposed flies compared to controls, and the sex-specific differences suggest hormonal or metabolic factors influence how organisms respond to plastic exposure. These findings are relevant to understanding whether microplastic health risks differ between male and female humans.
Sex-specific toxicity of PMMA Microplastics: Behavioral and metabolic dysregulation in adult Drosophila melanogaster
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Drosophila melanogaster flies exposed to PMMA microplastics for 20 days showed sex-specific responses — males had enhanced motor activity while females showed metabolic disruption and shortened lifespan — highlighting the importance of considering sex differences in microplastic toxicity studies.
A mini review on exposure of microplastic to Drosophila melanogaster causing sex-specific, transgenerational, locomotory, physiological and developmental effect
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This mini-review synthesized studies on how polystyrene and PET microplastics affect Drosophila melanogaster across multiple biological levels including sex-specific responses, physiology, behavior, development, and transgenerational effects. Male Drosophila showed greater sensitivity to microplastics with higher mortality, and effects were both concentration- and size-dependent.
Sex dimorphism and hormesis response to polystyrene microplastic exposure in kinematics and metabolism of Drosophila model based on deep learning
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Researchers used fruit flies as a model organism to study how polystyrene microplastics affect insect behavior and metabolism, using deep learning to track movement patterns. They found notable differences between male and female responses, and observed a hormesis effect where low doses stimulated activity while higher doses were inhibitory. The study provides new insights into how microplastics may affect insect populations with potential implications for broader ecosystems.
Effects of PET microplastics on the physiology of Drosophila
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Researchers used Drosophila fruit flies as a model to study the physiological effects of PET microplastics, finding that ingestion affected reproduction, lifespan, and gut function. The study suggests that even common plastic types found in food packaging can have measurable biological effects when consumed by living organisms.
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