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The Influence of Polystyrene Microspheres Abundance on Development and Feeding Behavior of Artemia salina (Linnaeus, 1758)
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Researchers exposed brine shrimp larvae to polystyrene microspheres at various concentrations with and without a food source over seven days. They found that microplastic ingestion was dose-dependent and significantly influenced by food availability, with the highest contamination occurring when no food was present. The study suggests that microplastic pollution can disrupt feeding behavior and delay development in early life stages of marine organisms.
In the present study, it has been evaluated how 10 µm of polyethylene microspheres can be ingested by Artemia salina (Linnaeus, 1758) larvae within the first 7 days of the life cycle, and the impact on their health. Twelve A. salina larvae (instar I) groups were exposed to different microplastics (MPs) concentrations (0-1-10-102-103-104 MPs/mL), with and without Dunaliella salina as a food source. The results highlighted that A. salina larvae ingest MPs in relation to the exposure times in a dose-dependent manner and are significantly influenced by food availability. The highest contamination found was 306.2 MPs/individual at 104 MPs/mL exposure without a food source. No MPs were found in the presence of the food source from 1 to 102 MPs/mL, while contamination was detected at all concentrations of MPs without a food source. The worst effect on the developmental stages was evaluated at 168 h with a food source, with a delay compared to the control of I and II instars at 103 and 104 MPs/mL, respectively. Furthermore, microalgal feeding was significantly reduced for about 50% in the presence of 104 MPs/mL. These results highlight that aquatic microplastics pollution could affect the A. salina’s feeding behavior and life cycle.
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The uptake and elimination of polystyrene microplastics by the brine shrimp, Artemia parthenogenetica, and its impact on its feeding behavior and intestinal histology
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Researchers studied the uptake, elimination, and intestinal effects of polystyrene microplastics on brine shrimp larvae. They found that the larvae ingested microplastics at rates dependent on concentration, exposure time, and food availability, and that the particles caused intestinal damage. The study demonstrates that microplastic contamination can harm the health and feeding behavior of zooplankton larvae, which are critical components of marine food webs.
Effects of ingested polystyrene microplastics on brine shrimp, Artemia parthenogenetica
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Brine shrimp larvae (Artemia parthenogenetica) were exposed to 10 μm polystyrene microspheres at concentrations close to environmentally extrapolated levels, with microspheres clearly ingested and accumulated in the gut, resulting in reduced feeding rates and growth at higher concentrations. The study demonstrates that microplastic ingestion by brine shrimp, a widely used aquaculture feed organism, occurs at ecologically relevant concentrations and causes sublethal harm.
Polystyrene Microplastic Interferes with Yolk Reserve Utilisation in Early Artemia salina Nauplii
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Researchers exposed brine shrimp (Artemia salina) nauplii to polystyrene microplastics and found reduced hatching rates, slower growth, and signs of oxidative stress. Histological analysis revealed that the microplastics interfered with yolk reserve utilization, delaying resorption and impairing gut function in the developing larvae. The study suggests that microplastic exposure during early development can disrupt nutrient absorption critical for growth in aquatic organisms.
Ingestion and bioaccumulation of polystyrene nanoplastics and their effects on the microalgal feeding of Artemia franciscana
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Brine shrimp (Artemia franciscana) exposed to polystyrene nanoplastics ingested and bioaccumulated the particles, which also affected their feeding behavior on microalgae and caused changes in gut microbiota. These effects on a widely used aquaculture species raise concerns about nanoplastic contamination in marine food production.
Sublethal Effects of Polystyrene Nanoplastics on the Embryonic Development of Artemia salina (Linnaeus, 1758)
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Researchers exposed brine shrimp embryos to amino-modified polystyrene nanoplastics of two sizes and assessed a range of developmental effects. They found that the nanoplastics accumulated in the organisms and caused sublethal effects including altered hatching rates and developmental abnormalities, even at non-lethal concentrations. The study suggests that nanoplastic pollution may pose risks to the early development of organisms at the base of aquatic food chains.
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