We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Salinity Moderated the Toxicity of Zinc Oxide Nanoparticles (ZnO NPs) towards the Early Development of Takifugu obscurus
Summary
Researchers found that salinity modulates the toxicity of zinc oxide nanoparticles to the early development of obscure pufferfish, with varying salt concentrations altering nanoparticle behavior and biological effects during this anadromous species' migration between fresh and saltwater.
ZnO nanoparticles (ZnO NPs) have been applied in a wide range of fields due to their unique properties. However, their ecotoxicological threats are reorganized after being discharged. Their toxic effect on anadromous fish could be complicated due to the salinity fluctuations during migration between freshwater and brackish water. In this study, the combined impact of ZnO NPs and salinity on the early development of a typical anadromous fish, obscure puffer (Takifugu obscurus), was evaluated by (i) observation of the nanoparticle characterization in salt solution; (ii) quantification of the toxicity to embryos, newly hatched larvae, and larvae; and (iii) toxicological analysis using biomarkers. It is indicated that with increased salinity level in brackish water (10 ppt), the toxicity of ZnO NPs decreased due to reduced dissolved Zn2+ content, leading to higher hatch rate of embryos and survival rate of larvae than in freshwater (0 ppt). The irregular antioxidant enzyme activity changes are attributed to the toxic effects of nanoparticles on CAT (catalase), but further determination is required. The results of present study have the significance to guide the wildlife conservation of Takifugu obscurus population.
Sign in to start a discussion.
More Papers Like This
Ecological Risks of Zinc Oxide Nanoparticles for Early Life Stages of Obscure Puffer (Takifugu obscurus)
This study tested the toxic effects of zinc oxide nanoparticles on the early life stages of the obscure puffer fish, finding reduced hatching rates, deformities in larvae, and significant mortality at higher concentrations. While focused on zinc oxide rather than microplastics, the research is relevant because zinc oxide nanoparticles from sunscreen are commonly found alongside microplastics in aquatic environments. The combined presence of multiple nanoparticle pollutants may compound the risks to aquatic ecosystems and the fish people eat.
Toxic Effects and Mechanisms of Silver and Zinc Oxide Nanoparticles on Zebrafish Embryos in Aquatic Ecosystems
Researchers tested the toxic effects of silver and zinc oxide nanoparticles on zebrafish embryos in natural water environments. They found that both nanoparticle types caused acute toxicity, increased oxidative stress, apoptosis, and autophagy, though toxicity was lower in natural water compared to pure water due to environmental interactions. The study suggests that the complex components in natural water may transform nanoparticles in ways that reduce but do not eliminate their harmful effects on aquatic organisms.
The Effects of Environmental Factors on the Toxicity of Nanomaterials in Fish
This review examined how environmental factors such as temperature, pH, and salinity modify the toxicity of nanomaterials and nanoplastics in fish. Understanding how contextual factors alter toxicity is important for accurately assessing the real-world risks of nanoplastics to aquatic life.
Particles rather than released Zn2+ from ZnO nanoparticles aggravate microplastics toxicity in early stages of exposed zebrafish and their unexposed offspring
Researchers investigated the combined effects of polystyrene microplastics and zinc oxide nanoparticles on zebrafish embryos and their unexposed offspring. They found that ZnO particles adhered to microplastic surfaces and amplified toxic effects including growth inhibition, oxidative stress, and hormonal disruption, with impacts carrying over to the next generation. Interestingly, dissolved zinc ions actually reversed some microplastic toxicity, suggesting that it is the physical particles rather than the released zinc that drive the increased harm.
Evaluating the Effectiveness of Vitamins E and C in Mitigating the Toxic Effects of Zinc Oxide Bulk and Nanoparticles on Fish: A Review
This paper is not relevant to microplastics — it is a review of how vitamins E and C can reduce the toxic effects of zinc oxide nanoparticles on fish in aquatic environments.