We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
A toxicity study on Daphnia magna and Artemia salina: Are paper cups safe?
AI summary Read the abstract
Researchers tested the toxicity of leachates from paper cups of various brands on the aquatic invertebrates Daphnia magna and Artemia salina at both room temperature and 80°C, finding that hot liquid exposure caused paper cups to release substances harmful to both test organisms. The results raise questions about the safety of paper cups as an alternative to plastic.
The objective of our study is to reveal the effects of paper cups sold under different brands on the aquatic test organisms, Daphnia magna and Artemia salina, which are frequently used in toxicity studies. To this end, survival rates of D. magna and A. salina individuals, which were kept alive after cooling in paper cups exposed to 20 °C and 80 °C, for 24, 48, 72, and 96 hours were determined. Upon examining the results, while no significant decrease was found in the survival rates of D. magna and A. salina individuals kept in glassware, a significant increase was identified in the mortality rates of individuals kept in paper glasses, especially at 72 and 96 hours. It was determined that whereas the mortality rates reached 40% in paper and plastic cups exposed to 20 °C water, the mortality rates reached 70% in paper cups exposed to 80 °C water. Moreover, regression was found in the developmental and reproductive characteristics of D. magna and A. salina individuals, which were kept in paper cups exposed to water at different temperatures, compared to the control group and individuals in glass cups. We think that this was caused by microplastics or some chemicals released into the water due to the deterioration of the film layer on the inner surface of the glass, especially due to the high temperature.
More Papers Like This
Leachate From Expanded Polystyrene Cups Is Toxic to Aquatic Invertebrates (Ceriodaphnia dubia)
AI summary Read the abstract
Leachate from expanded polystyrene cups was found to be acutely toxic to the freshwater invertebrate Ceriodaphnia dubia at concentrations lower than the styrenics content alone would predict, suggesting that other chemical additives contribute to toxicity. The findings support proposed bans on single-use expanded polystyrene products and highlight that plastic leachate toxicity extends beyond the primary polymer.
Ecotoxicological consequences of polystyrene naturally leached in pure, fresh, and saltwater: lethal and nonlethal toxicological responses in Daphnia magna and Artemia salina
AI summary Read the abstract
Researchers tested the toxic effects of chemicals that naturally leach out of polystyrene plastic in both freshwater and saltwater on two small aquatic organisms. They found that the leachates caused both lethal and sublethal effects, including reduced reproduction and mobility, with toxicity varying depending on water salinity. The study highlights that the chemicals released by degrading plastics may pose risks to aquatic life even when the plastic particles themselves are not directly ingested.
Review on the ecotoxicological impacts of plastic pollution on the freshwater invertebrate Daphnia
AI summary Read the abstract
This review examines the ecotoxicological impacts of plastic pollution on the freshwater invertebrate Daphnia, a widely used model organism. Researchers highlight that microplastics affect Daphnia reproduction, growth, and survival, and that chemicals leaching from plastics may contribute additional toxic effects that transfer through food webs.
The effect of microplastics on Daphnia fitness – Systematic review and meta‐analysis
AI summary Read the abstract
This systematic review and meta-analysis examines how micro- and nanoplastics affect the health and reproduction of Daphnia, a key freshwater organism used in toxicity testing. The findings confirm that plastic particles can harm these organisms, which is significant because Daphnia are a foundational species in freshwater ecosystems connected to human water supplies.
Effects of Microplastics on Aquatic Animals: A Case Study on Daphnia
AI summary Read the abstract
Researchers exposed Daphnia water fleas to ten types of virgin plastic materials (HDPE, LDPE, PA, PVC, PP, PS, TPU, etc.) and measured survival, reproduction, and behavioral endpoints, finding that PVC and certain engineering plastics caused the greatest acute toxicity while softer polyolefins had lower effects.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.