We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Effects of multi-stressors on juveniles of the marine fish Pomatoschistus microps: Gold nanoparticles, microplastics and temperature
AI summary Read the abstract
Researchers investigated the combined effects of gold nanoparticles, microplastics, and temperature increase on juvenile common goby fish. The study found that these multiple stressors interacted in complex ways, with microplastics influencing how fish took up nanoparticles and temperature modulating toxicity, highlighting the importance of studying environmental contaminants in combination rather than isolation.
Knowledge on multi-stressors effects required for environmental and human risk assessments is still limited. This study investigated the combined effects of gold nanoparticles (Au-NP), microplastics (MP) and temperature increase on Pomatoschistus microps, an important prey for several higher level predators, including some species edible to humans. Four null hypotheses were tested: H01: P. microps juveniles do not take up Au-NP through the water; H02: Au-NP (ppb range) are not toxic to juveniles; H03: the presence of MP do not influence the effects of Au-NP on juveniles; H04: temperature increase (20-25°C) does not change the effects of the tested chemicals on juveniles. Wild juveniles were acclimated to laboratory conditions. Then, they were exposed to Au-NP (≈5nm diameter) and MP (polyethylene spheres, 1-5μm diameter), alone and in mixture, at 20°C and 25°C, in semi-static conditions. After 96h of exposure to Au-NP, fish had gold in their body (0.129-0.546μg/g w.w.) leading to H01 refusal. Exposure to Au-NP alone caused a predatory performance decrease (≈-39%, p<0.05) leading to H02 refusal. MP did not change the Au-NP toxicity leading to H03 acceptance. Temperature rise significantly increased the concentration of gold in fish exposed to Au-NP (≈2.3 fold), and interacted with chemical effects (e.g. glutathione S-transferases activity) leading to H04 refusal. Thus, the results of this study highlight the importance of further investigating the effects of multi-stressors on marine fish, particularly the effects of temperature on the uptake, biotransformation, elimination and effects of nanoparticles and microplastics, either alone or in mixture. This knowledge is most important to improve the basis for environmental and human risk assessments of these environmental contaminants of high concern.
More Papers Like This
Single and combined effects of gold nanoparticles and microplastics on juveniles of the marine fish Pomatoschistus microps, and modulation by temperature
AI summary Read the abstract
Researchers exposed juvenile marine fish (Pomatoschistus microps) to gold nanoparticles, microplastics, or both simultaneously to understand their individual and combined toxic effects, and how rising water temperatures change those effects. This research helps clarify whether microplastics and other pollutants interact to cause greater harm to marine life under climate change conditions.
Temperature rise and microplastics interact with the toxicity of the antibiotic cefalexin to juveniles of the common goby ( Pomatoschistus microps ): Post-exposure predatory behaviour, acetylcholinesterase activity and lipid peroxidation
AI summary Read the abstract
Researchers studied how microplastics and temperature rise interact with the toxicity of the antibiotic cefalexin in juvenile common goby fish. The study found that the combination of these stressors affected predatory behaviour, acetylcholinesterase activity, and lipid peroxidation, suggesting that microplastics and warming can modify the toxicological effects of pharmaceutical contaminants.
Toxicological interactions induced by chronic exposure to gold nanoparticles and microplastics mixtures in Daphnia magna
AI summary Read the abstract
This study examined the combined toxicological effects of gold nanoparticles and microplastics through chronic exposure, finding interactive effects that differed from either contaminant alone, emphasizing the importance of studying multiple stressors together.
Effects of elevated temperature and microplastic exposure on growth and predatory performance of a freshwater fish
AI summary Read the abstract
Researchers examined the combined effects of elevated water temperature and microplastic exposure on juvenile round gobies over 37 days. While warming reduced growth rates, microplastics alone did not significantly affect growth or predatory performance, and the two stressors together did not produce additive effects. The study suggests that for this invasive fish species, climate warming poses a more immediate threat than current environmental levels of microplastic pollution.
Micro- and nanoplastics effects in a multiple stressed marine environment
AI summary Read the abstract
Researchers examined how micro- and nanoplastics interact with other environmental stressors in marine settings, finding that realistic multi-stressor scenarios can amplify or modify plastic toxicity in ways single-exposure studies miss.
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.