The island where the flies walk

Evolution has one of its greatest exponents in Charles Darwin and his theories, and one of them, perhaps one of the least popular and most denied since its presentation, has begun to become a reality after discovering the island where the flies walk and moths crawl because they have lost their ability to fly.

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  • Charles Darwin and his theory of insects that stop flying
  • The islands where flies walk and moths crawl

Charles Darwin and his theory of insects that stop flying

About 160 years ago, Charles Darwin created what is known as the theory of evolution, Through which he shared a multitude of ideas, of which some of them have finally been proven, while others have remained in the pipeline or were even wrong.

In any case, one of the most unknown theories to be considered as too simple by his colleagues, was that insects, or at least a good part of them, were doomed to lose their ability to fly with the passage of time. time and evolution.

From the outset, this was labeled as absurd, since there were no compelling reasons that led to an investigation through which it was possible to find out if, really, this could become possible at some time and in some place determined.

This theory was formulated from his experience in the madeira island, where he was able to observe that some beetles had lost the ability to fly, and he considered that the reason was due to the fact that on the islands, especially the smaller ones, the insects avoided flying due to the risk that this posed for them, since they could end up in middle of the sea with a breath of air.

In this way, as generations have passed, these insects have been increasingly reluctant to take off, thereby losing this ability..

However, Charles Darwin was much more right than his colleagues thought, and this we have recently been able to discover through research carried out on remote islands in the Indian Ocean between Antarctica and Australia, where it has been observed that, indeed, flies walk while moths crawl on the ground, all of them insects that have lost their ability to fly or have seen it very limited.

The islands where flies walk and moths crawl

Marion Y Heard are the names of two of the islands in which this recent research has been carried out, through which it has been observed that 47% of the species of insects that inhabit them have lost their ability to fly.

In addition to flies and moths, it has also happened to beetles and wasps, and in fact, there are species that have lost their wings, while others retain them but their size has decreased and their muscles have lost their shape. and ability to fly, settling for very short flights.

This study supports the theory that insects avoid flying in areas such as these small islands where changing weather conditions make flight not only useless, but also a serious risk..

However, Darwin's theory is expanded with the concept that this is also observed in other extensions of greater dimensions as the botanist Joseph Hooker, but now it is known that the reason is due to the absence of predators as occurs in desert areas, or even in cold areas where flying involves a very high energy consumption.

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