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Biological Magnification of Microplastics: A Look at the Induced Reproductive Toxicity from Simple Invertebrates to Complex Vertebrates
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This review looks at how microplastics accumulate and magnify through the food chain, from simple invertebrates to complex vertebrates, with a particular focus on reproductive harm. Researchers found evidence that microplastic exposure can impair fertility, embryo development, and offspring survival across a wide range of species. The study highlights reproduction as a critical vulnerability point for wildlife exposed to microplastic pollution.
The issue of microplastic (MP) pollution is one of the most pressing environmental problems faced today and for the future. Plastics are ubiquitous due to their exponential use and mismanagement, resulting in the accumulation of fragments across the world. Hence, the problem of MP pollution is aggravated when these plastic items disintegrate into smaller particles due to different physical, chemical, and environmental factors. The consumption of these MP pollutants by wildlife is a worldwide concern and a potentially crucial risk for all ecosystems. Consequently, MPs have caused a wide variety of problems for both public health and wildlife concerning vital life processes—specifically reproduction, which is critical to species’ survival in an ecosystem. Despite MPs’ detrimental effects on wildlife reproduction, it remains unclear how MPs can affect the hypothalamic–pituitary–gonadal (HPG) axis. This review highlights the significant reproductive toxicity of MPs in wildlife, with potentially devastating consequences for human health. The findings emphasize the urgency of developing effective solutions for mitigating the adverse effects of MP pollution on the reproductive systems of wildlife and preserving the integrity of aquatic and terrestrial habitats.
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This review summarizes existing research on how micro- and nanoplastics harm reproduction across many species, from marine invertebrates to mammals. The particles can cause oxidative stress and hormone disruption, leading to reduced fertility, abnormal embryo development, and toxic effects that pass to offspring. The findings raise concerns that human reproductive health could be similarly affected given our increasing exposure to these particles.
Unraveling the threat: Microplastics and nano-plastics' impact on reproductive viability across ecosystems
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This review summarizes research on how microplastics and nanoplastics affect reproduction across many species, from aquatic invertebrates to mammals including humans. In males, exposure leads to testicular damage, lower sperm quality, and hormone disruption; in females, it causes ovarian and uterine problems, inflammation, and reduced fertility. The evidence also shows these reproductive harms can be passed to offspring, raising serious concerns about long-term effects on human fertility.
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This review documents microplastic presence throughout the food trophic chain, examining how plastics enter food webs, accumulate with biomagnification, and affect organisms at each trophic level including humans who are at the top of the chain.
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This review examines evidence for microplastic accumulation, concentration, and amplification through food chains from primary producers to predators. The authors discuss the degree to which trophic transfer leads to biomagnification of plastic particles and co-adsorbed chemical contaminants, with implications for wildlife and human dietary exposure.
Microplastics and Reproductive Dysfunction in Animals
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This research review summarizes studies showing that tiny plastic particles called microplastics can build up in animals' reproductive organs and harm their ability to have healthy offspring. The plastic particles cause damage that leads to poor sperm and egg quality, hormone problems, and birth defects in various animals from fish to mammals. While this research focused on animals, it raises concerns about potential fertility effects in humans since we're also exposed to microplastics through food, water, and air.
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