Post by nurefatehi on Feb 26, 2024 23:49:28 GMT -5
There are trillions of microplastics in the ocean, bobbing on the surface, floating through the water column and accumulating in clusters on the seabed. With plastic so ubiquitous, it is inevitable that marine organisms, such as sharks, will ingest it. A new study in Scientific Reports investigated the ingestion of microplastics in four species of demersal sharks found in the North Atlantic Ocean, which were caught incidentally by a local fishery in , United Kingdom. A team of six researchers from the University of Exeter and the University of Leeds examined the stomachs and digestive tracts of 46 sharks and found that 67% contained microplastics. A total of 379 microplastics — plastic particles or fibers smaller than 5 millimeters, or one-fifth of an inch — were found in the sampled sharks. Many of the plastic fibers were synthetic cellulose, a material found in polyester clothing and hygiene products, such as face masks, which have become increasingly common during the COVID-19 pandemic. I think there's definitely some cause for concern. Although many of the particles ingested by these sharks will eventually be excreted, they potentially remain within the body long enough for the inorganic and chemical contaminants (bound to the particles) to enter the bodies of these sharks.
Kristian Parton, lead author of the study and researcher at the Center for Ecology and Conservation at the University of Exeter. Parton said she was surprised Nigeria WhatsApp Number List that the sharks that live off the coast of in Cornwall, at the southwestern tip of Britain, contain so many plastic particles. I actually didn't expect to find as many particles as we found in these sharks. The waters around Cornwall are thought to be some of the most beautiful in the UK, so I didn't think there would be much pollution. Parton's co-writer Tamara Galloway has a similar view. We didn't expect to find textile microfibers in so many of our native shark species. Our study highlights how important it is to think before throwing things away. Galloway, marine biologist and professor of ecotoxicology at the University of Exeter Sharks are found at the top of the marine food chain and play a vital role in ocean ecosystems. However, they are completely exposed to pollutants and other human impact activities. Will McCallum, head of oceans, Greenpeace UK. Demersal sharks can be found at depths of 5 to 900 meters, although they usually live and feed in the demersal zone of the ocean, which is close to the sea floor.
The four demersal shark species used in this study were the catshark the starry smooth greyhound the spiny the. There appear to be two routes for these particles to end up in sharks. The first through its food source such as crustaceans. Their prey may already contain these fibers, and consequently they are passed to the shark through bioaccumulation along the food chain. The second way is direct ingestion of the sediment. As these sharks feed, they often suck sediment into their mouths; some of it is expelled immediately, although some is ingested, so fibers and particles that may have sunk to the seabed can be ingested directly from the seabed. surrounding sediment as these sharks feed. Kristian Parton, lead author of the study and researcher at the Center for Ecology and Conservation at the University of Exeter. Some sharks only contained a few plastic particles, but others contained dozens. The larger the shark, the more plastic there was in it, according to the findings. The highest number of microplastics was found in an , which had 154 polypropylene fibers inside its stomach and intestines. It is likely that this shark swallowed a larger piece of rope/fishing and this was broken down during the digestive processes within the shark, and also broken into smaller pieces during our analysis.
Kristian Parton, lead author of the study and researcher at the Center for Ecology and Conservation at the University of Exeter. Parton said she was surprised Nigeria WhatsApp Number List that the sharks that live off the coast of in Cornwall, at the southwestern tip of Britain, contain so many plastic particles. I actually didn't expect to find as many particles as we found in these sharks. The waters around Cornwall are thought to be some of the most beautiful in the UK, so I didn't think there would be much pollution. Parton's co-writer Tamara Galloway has a similar view. We didn't expect to find textile microfibers in so many of our native shark species. Our study highlights how important it is to think before throwing things away. Galloway, marine biologist and professor of ecotoxicology at the University of Exeter Sharks are found at the top of the marine food chain and play a vital role in ocean ecosystems. However, they are completely exposed to pollutants and other human impact activities. Will McCallum, head of oceans, Greenpeace UK. Demersal sharks can be found at depths of 5 to 900 meters, although they usually live and feed in the demersal zone of the ocean, which is close to the sea floor.
The four demersal shark species used in this study were the catshark the starry smooth greyhound the spiny the. There appear to be two routes for these particles to end up in sharks. The first through its food source such as crustaceans. Their prey may already contain these fibers, and consequently they are passed to the shark through bioaccumulation along the food chain. The second way is direct ingestion of the sediment. As these sharks feed, they often suck sediment into their mouths; some of it is expelled immediately, although some is ingested, so fibers and particles that may have sunk to the seabed can be ingested directly from the seabed. surrounding sediment as these sharks feed. Kristian Parton, lead author of the study and researcher at the Center for Ecology and Conservation at the University of Exeter. Some sharks only contained a few plastic particles, but others contained dozens. The larger the shark, the more plastic there was in it, according to the findings. The highest number of microplastics was found in an , which had 154 polypropylene fibers inside its stomach and intestines. It is likely that this shark swallowed a larger piece of rope/fishing and this was broken down during the digestive processes within the shark, and also broken into smaller pieces during our analysis.