first_imgDolphins, Environment, Mammals, Marine Animals, Marine Conservation, Marine Crisis, Marine Mammals, Microplastics, Oceans, Plastic, Pollution, Research, Whales In a paper published in the journal Scientific Reports last month, a research team from the UK’s University of Exeter and Plymouth Marine Laboratory detailed their findings after studying the digestive tracts of 50 individuals from 10 species of dolphins, seals, and whales that had been stranded on the coast of Britain.“Microplastics were ubiquitous with particles detected in every animal examined,” the authors of the study write.Just 5.5 microplastic particles were found in each animal, on average, which suggests that the particles might be simply passing through the marine mammals’ bodies, the researchers said. But the animals’ stomachs were found to contain more microplastics than their intestines, pointing to “a potential site of temporary retention,” they added. Researchers who examined 50 marine mammals that had washed up on Britain’s shores say they found microplastics in the guts of every single animal.In a paper published in the journal Scientific Reports last month, a research team from the UK’s University of Exeter and Plymouth Marine Laboratory detailed their findings after studying the digestive tracts of 50 individuals from 10 species of dolphins, seals, and whales that had been stranded on the coast of Britain. The researchers sought to determine the amount of microplastics and polymers the animals might have ingested as well as whether plastics are expelled from their bodies (via defecation, for instance) or if they are retained within their digestive tracts.“Microplastics were ubiquitous with particles detected in every animal examined,” the authors of the study write. Just 5.5 microplastic particles were found in each animal, on average, which suggests that the particles might be simply passing through the marine mammals’ bodies, the researchers said. But the animals’ stomachs were found to contain more microplastics than their intestines, pointing to “a potential site of temporary retention,” they added.“It’s shocking — but not surprising — that every animal had ingested microplastics,” the study’s lead author, Sarah Nelms of the University of Exeter and Plymouth Marine Laboratory, said in a statement. “The number of particles in each animal was relatively low (average of 5.5 particles per animal), suggesting they eventually pass through the digestive system, or are regurgitated. We don’t yet know what effects the microplastics, or the chemicals on and in them, might have on marine mammals.”The vast majority of the particles discovered in the marine mammals’ guts — 84 percent — were fibers, which come from sources like clothes, fishing nets, and toothbrushes. The other 16 percent were plastic fragments, which could have possibly come from food packaging and plastic bottles.“Microplastics in the marine environment originate from a variety of sources, including fragmentation of larger macro-plastic debris, pre-production pellets (nurdles) spilled during transportation and fabrication, outflow of wastewater containing microbeads from cosmetics and fibres from the washing of synthetic textiles, as well as road-run-off containing fragments of vehicle tyres and marking paint,” Nelms and co-authors note in the study.Nelms and team also write that they found a possible correlation between cause of death and microplastic abundance, as the animals included in the study that had died due to infectious diseases “had a slightly higher number of particles than those that died of trauma and other drivers of mortality.”It’s not possible to reach any firm conclusions regarding the significance of this observation, according to Professor Brendan Godley of the Centre for Ecology and Conservation at the University of Exeter, a co-author of the study. Still, he said, “Our findings are not good news.”Godley continued: “We are at the very early stages of understanding this ubiquitous pollutant. We now have a benchmark that future studies can be compared with. Marine mammals are ideal sentinels of our impacts on the marine environment, as they are generally long lived and many feed high up in the food chain.”The researchers write in the study that “further research is required to better understand the potential chronic effects of microplastic exposure on animal health, particularly as marine mammals are widely considered important sentinels for the implications of pollution for the marine environment.”It’s been estimated that as much as 8 million metric tons of plastic waste makes its way from land into Earth’s oceans every year. Previous studies have shown that filter-feeding marine megafauna like baleen whales, manta rays, and whale sharks are particularly susceptible to microplastic pollution in the world’s oceans. Researchers have also previously found microplastics in the guts of humans around the globe.Louise Edge, head of Greenpeace UK’s ocean plastics campaign, said of the present study’s findings: “It is ominous that every single marine mammal tested was found to have microplastics in their digestive system, and it shows the scale of plastic pollution in our seas. This is yet more evidence that governments and big businesses need to focus their efforts on drastically reducing the use and waste of plastics, to stem the flow of plastic pollution into our rivers and oceans and into the mouths of marine wildlife.” Greenpeace Research Laboratories provided support to the research team behind the study.Study co-author Dr. Penelope Lindeque, head of the marine plastics research group at the Plymouth Marine Laboratory, said it was “disconcerting” that microplastics were found in the gut of every single animal included in the study and echoed the call for reducing the amount of plastic waste dumped into Earth’s oceans.“Indeed, from our work over the years we have found microplastic in nearly all the species of marine animals we have looked at; from tiny zooplankton at the base of the marine food web to fish larvae, turtles and now dolphins, seals and whales,” Lindeque said.“We don’t yet know the effects of these particles on marine mammals. Their small size means they may easily be expelled, but while microplastics are unlikely to be the main threat to these species, we are still concerned by the impact of the bacteria, viruses and contaminants carried on the plastic. This study provides more evidence that we all need to help reduce the amount of plastic waste released to our seas and maintain clean, healthy and productive oceans for future generations.”Plastic litter on a beach. Image licensed under CC0 – Public Domain.CITATIONS• Germanov, E. S., Marshall, A. D., Bejder, L., Fossi, M. C., & Loneragan, N. R. (2018). Microplastics: No small problem for filter-feeding megafauna. Trends in Ecology & Evolution. doi:10.1016/j.tree.2018.01.005• Jambeck, J. R., Geyer, R., Wilcox, C., Siegler, T. R., Perryman, M., Andrady, A., … & Law, K. L. (2015). Plastic waste inputs from land into the ocean. Science, 347(6223), 768-771. doi:10.1126/science.1260352• Nelms, S. E., Barnett, J., Brownlow, A., Davison, N. J., Deaville, R., Galloway, T. S., … & Godley, B. J. (2019). Microplastics in marine mammals stranded around the British coast: ubiquitous but transitory?. Scientific reports, 9(1), 1075. doi:10.1038/s41598-018-37428-3FEEDBACK: Use this form to send a message to the author of this post. If you want to post a public comment, you can do that at the bottom of the page. Article published by Mike Gaworeckicenter_img Popular in the CommunitySponsoredSponsoredOrangutan found tortured and decapitated prompts Indonesia probeEMGIES17 Jan, 2018We will never know the full extent of what this poor Orangutan went through before he died, the same must be done to this evil perpetrator(s) they don’t deserve the air that they breathe this has truly upset me and I wonder for the future for these wonderful creatures. So called ‘Mankind’ has a lot to answer for we are the only ones ruining this world I prefer animals to humans any day of the week.What makes community ecotourism succeed? In Madagascar, location, location, locationScissors1dOther countries should also learn and try to incorporateWhy you should care about the current wave of mass extinctions (commentary)Processor1 DecAfter all, there is no infinite anything in the whole galaxy!Infinite stupidity, right here on earth.The wildlife trade threatens people and animals alike (commentary)Anchor3dUnfortunately I feel The Chinese have no compassion for any living animal. They are a cruel country that as we knowneatbeverything that moves and do not humanily kill these poor animals and insects. They have no health and safety on their markets and they then contract these diseases. Maybe its karma maybe they should look at the way they live and stop using animals for all there so called remedies. DisgustingConservationists welcome China’s wildlife trade banThobolo27 JanChina has consistently been the worlds worst, “ Face of Evil “ in regards our planets flora and fauna survival. In some ways, this is nature trying to fight back. This ban is great, but the rest of the world just cannot allow it to be temporary, because history has demonstrated that once this coronavirus passes, they will in all likelihood, simply revert to been the planets worst Ecco Terrorists. Let’s simply not allow this to happen! How and why they have been able to degrade this planets iconic species, rape the planets rivers, oceans and forests, with apparent impunity, is just mind boggling! Please no more.Probing rural poachers in Africa: Why do they poach?Carrot3dOne day I feel like animals will be more scarce, and I agree with one of my friends, they said that poaching will take over the world, but I also hope notUpset about Amazon fires last year? Focus on deforestation this year (commentary)Bullhorn4dLies and more leisSponsoredSponsoredCoke is again the biggest culprit behind plastic waste in the PhilippinesGrapes7 NovOnce again the article blames companies for the actions of individuals. It is individuals that buy these products, it is individuals that dispose of them improperly. If we want to change it, we have to change, not just create bad guys to blame.Brazilian response to Bolsonaro policies and Amazon fires growsCar4 SepThank you for this excellent report. I feel overwhelmed by the ecocidal intent of the Bolsonaro government in the name of ‘developing’ their ‘God-given’ resources.U.S. allocates first of $30M in grants for forest conservation in SumatraPlanet4dcarrot hella thick ;)Melting Arctic sea ice may be altering winds, weather at equator: studyleftylarry30 JanThe Arctic sea ice seems to be recovering this winter as per the last 10-12 years, good news.Malaysia has the world’s highest deforestation rate, reveals Google forest mapBone27 Sep, 2018Who you’re trying to fool with selective data revelation?You can’t hide the truth if you show historical deforestation for all countries, especially in Europe from 1800s to this day. WorldBank has a good wholesome data on this.Mass tree planting along India’s Cauvery River has scientists worriedSurendra Nekkanti23 JanHi Mongabay. Good effort trying to be objective in this article. I would like to give a constructive feedback which could help in clearing things up.1. It is mentioned that planting trees in village common lands will have negative affects socially and ecologically. There is no need to even have to agree or disagree with it, because, you also mentioned the fact that Cauvery Calling aims to plant trees only in the private lands of the farmers. So, plantation in the common lands doesn’t come into the picture.2.I don’t see that the ecologists are totally against this project, but just they they have some concerns, mainly in terms of what species of trees will be planted. And because there was no direct communication between the ecologists and Isha Foundation, it was not possible for them to address the concerns. As you seem to have spoken with an Isha spokesperson, if you could connect the concerned parties, it would be great, because I see that the ecologists are genuinely interested in making sure things are done the right way.May we all come together and make things happen.Rare Amazon bush dogs caught on camera in BoliviaCarrot1 Feba very good iniciative to be fallowed by the ranchers all overSponsoredlast_img

Leave a Reply

Your email address will not be published. Required fields are marked *