Melissa Cristina Márquez is a science communicator, author, wildlife educator, and marine scientist. She specializes in marine biology, conservation, and ocean exploration, with a particular focus on sharks and other marine predators.
Pollution in the marine environment due to plastic waste has become a pressing concern, with microplastics emerging as a particularly insidious threat.
Numerous studies have shed a light on the detrimental effects of plastics on marine life, particularly bony fish . However, the impact on elasmobranchs, such as sharks and rays, has received less attention activity and glutathione levels. Additionally, markers of inflammation, such as myeloperoxidase activity, were significantly elevated in individuals with high microplastic ingestion; this indicates a potential inflammatory response in the digestive tract, which could have implications for overall health and well-being.
These findings, the authors say, highlight the detrimental effects of microplastics on marine organisms at a cellular level and emphasize the need for continued monitoring and mitigation efforts. Prolonged exposure to oxidative stress induced by microplastic ingestion can lead to damage to vital organic molecules, compromising cellular integrity and overall health. To counteract these effects, organisms activate defense mechanisms, including antioxidant enzymes and detoxification pathways.
Efforts to mitigate plastic pollution and protect vulnerable marine species are imperative for the health of our oceans and planet. Future studies, the authors argue, should explore the long-term consequences of microplastic ingestion on shark populations, including effects on growth, reproduction, and overall fitness.
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