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Zoology: Hexapoda



If the name seems strange and dark, know that this is the only way to tell the insects and their close relatives within six feet (Entognatha). Why, in a section devoted to the animals most bizarre and least known, to speak of a group so vast and so (relatively) familiar to the general public? In fact, I will not talk about the biology of the Hexapoda, a topic that could not be exhausted even in an entire library of specialized texts, in a pathetic post of a blog that does not follow anyone. I want to make some brief remarks on the importance of these creatures that most most people consider annoying or negligible. Of less than 2 million living species known, 900.000 (a good half) are formed only by insects (not to mention their parents and then other arthropods). The mammals are known around 5000, which means that for each there are 180 mammal species of insects, not to mention that while it is rare to discover new species of mammals, do not need any effort to discover new species of insects: just draw a white sheet between two trees in Brazil, at night, and illuminate it with a torch - the majority of insects that swarm over it will be unknown to science. This shows how in reality it is likely that the species of insects for each species mammal to be several thousand. As well as a number of species, insects far exceed other terrestrial animals as biomass. Most of the mass of living animal in the world is made up of insects (in the rainforest than any other animal of 4:1). The enormous diversity and the sheer number suggests their great importance in the ecosystem: Edward O. Wilson has estimated that if, ironically, all the insects disappear abruptly, within six months the land would become a wasteland, and consequently even the human race would come very close to extinction or become extinct altogether . All plants need insects for pollination (a large part) would be condemned extinction, and even most of those pollinated by wind and water succumb to the impoverishment of the soil, no longer stirred by insects. Animals that feed on these plants and those that feed on insects will die instantly, and so the animals that eat those animals, and others who are on top of food chains. Of all the perils we run to our ecosystem, however, certainly do not have to worry about the total disappearance of the insects, because we could not get it even using everything we have at our disposal: they are too widespread and adaptable, and tons of poisons unload on them only serve to affect the surrounding environment.
Some say that after our end of the world will be dominated by insects. I do not know if our species can never die, but that does not matter, because in fact, given the superiority of number, mass, distribution and even influence on the rest of the biosphere, is already the world of insects, it always has been since no life on land and always will until the end that awaits the fiery planet (or even beyond, if we remained fled on some other planet, we bring with us many species of beneficial insects and other parasites, we will follow anyway). If an alien civilization observe from a distance, as we would rush to build homes and grow food enjoying only a small extent, while they have millions for each fruit of our labor, exceeding in numbers many thousands in our own homes and feed their children with our food, and does not take long to figure out who are the servants and who are the masters.

Amen.

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Alien does exist!



The human mind, although most individuals strive to the best of his ability to prove otherwise, it is extraordinary, far superior to that of any other animal. It is, however, linked to imitation and elaboration of mechanisms and forms of nature, whether we speak of the practical sciences, whether we speak art, man imitates and revises what he sees and observes around him. This is particularly evident in science fiction movies, where monsters of various shapes and sizes, as drawn, are nothing but a reshuffling of the various components of terrestrial organisms. My favorite monster is the Alien, one of the most disturbing and visually original beings ever appeared on the big screen. The Alien is also an example of an extraordinary event: the few times that it seems that man has managed to invent something so bizarre by nature not reflected in the three-room, then jump out that in fact that nature had already invented something to million years, only that had not yet been discovered. That there are such pests
behavior adorable slobbery monster is not new, and it is likely that the creators of the film they knew. It is in fact the legendary Icneumonidi, wasps which horrific behavior was one of the reasons that made Darwin doubt the existence of a benevolent god. These fact Hymenoptera lay their eggs in flesh of their prey, and the hatching larvae begin to feed the victim (usually a caterpillar or another type of insect larva) from the inside, leaving the last to vital organs in order the animal does not die and rot. Soave. Some entomologists think that the parasitic wasps could be the group of animals with the greatest number of species on Earth (record currently held, or better in the leg, the beetles), for the simple reason that almost every insect studied is parasitized by one or more species of these wasps. The Icneumonidi slam it highly of the ties of blood, and they readily infect other Icneumonidi, so that there is a case in which a particular caterpillar is haunted by a certain Icneumonide, whose larvae are parasitized by another Icneumonide while they are still in caterpillar. These larvae inside the larva inside the caterpillar are parasitized by a further Icneumonide, whose larvae still inside the larvae in the caterpillar larvae are parasitized by a final Icneumonide. In the end, emerge victorious from this entomological matrioska only the last wasp larvae, eating from the animals have eaten from the larvae that have eaten from the inside of the caterpillar. Such a thing will never be in a science fiction movie, because it is too unlikely to be taken seriously by viewers, yet it is true.
Instead, what might the creators of Alien did not know when they realized that the film is also the characteristic "mouth into the mouth of the famous monster existed in nature, precisely in the moray eel. The jaws of all gnathostomes (which, in an epic turn of events, meaning "animal whose mouth has a jaw") resulting from the processing of most anterior pharyngeal arches of the embryo in the moray another arc, which located further back, undergoes a similar modification, making a second set of jaws inside the mouth. The eel bites with the main jaws, then the secondary ones, dragging the prey toward the back of the throat and allowing the eel to repeatedly open and close his mouth to bite without the prey escape.
now lacks only the discovery of an animal from the blood acid and then we can officially say that aliens exist, fragmented into several different species that inhabit the Earth.