We tend to think of Antarctica as the last bastion of naturebeing a desert of ice oblivious to everyday problems from the rest of civilization. But the reality is that that place is not free from problems We live in the warmest (and most populated) areas of the planet. Something that we have proven thanks to a small insect that has survived ice ages and extreme conditions.
Microplastics. And this insect has given us the key that it is eating microplasticsthose particles that little by little we give more attention to our environment. But the curious thing, as a study has shown, is that they have managed to penetrate the terrestrial food web of the frozen continent. And the truth is that there is little plastic, since there is little human life.
The protagonist. the insect in question analyzed is the Antarctic Belgiuma flightless mosquito (since it lost its wings so that the wind would not drag them) and is considered the largest purely terrestrial animal on the continent. Despite measuring between 2 and 6 millimeters.
This is possible thanks to their extraordinary survival capabilities, having the ability to withstand freezing of their body fluids and extreme dehydration. But nature has not prepared it for the consumption of microplastics.
The study. The researchers they got analyze its diet thanks to the collection of larvae during an expedition in 2023. When analyzing the samples collected with advanced techniques, it was clearly seen that there were plastic polymer fragments inside the organisms. And although the proportion was low, the laboratory experiments told a different story.
And the moment insects are exposed to an environment with microplastics, they ingest them with the same ease with which they eat algae or moss, which is their usual diet. That is, they do not discriminate against them.
The impact. In humans we are still trying to find out the effect of microplastics on ourselves, and in mosquitoes it seems that in the short term it does not seem to be lethal. This way, these insects could continue going about their lives as normal, but there could be a subtle effect on the amount of fat reserve. Something that in an environment where every calorie counts to survive the cold, any caloric deficit is a risk.
The state of the ecosystem. In this way, the concern is not about the survival of this insect, but rather lies in how the human hand reaches even those areas where we do not have a very strong presence. The arrival of microplastics that coincide with those used in research equipment, tourist clothing and marine waste gives us a wake-up call on how we must reduce our impact on the environment.
And this ingestion of microplastics tells us that pollution has become evident in this ecosystem. But there is good news: there is no risk that the presence of these microplastics will begin to ascend the food chain of the different species because there are no predators that eat this insect.
The change. However, this discovery definitively breaks the illusion of isolation. From the deepest ocean trenches to larvae on the islands of Antarctica, there is no place left on Earth free from the imprint of our polymers. The Antarctic Belgium has survived millions of years of hostile climate; Now we will have to see how it adapts to the Anthropocene.
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