Has it ever crossed your mind that the word arachnida is a group of invertebrate animals mainly responsible for causing several accidents with humans? If the answer is no, will you find out which animals these are?
Index
The Class of arachnids includes more than 60,000 species, such as spiders, ticks, mites, scorpions, these arachnids have very important characteristics and I would even say strange, for example, arachnids have four pairs of legs, called cafalotorox, it has simple eyes, and are totally terrestrial, they tend to live beautifully. in warm and tropical regions, and some in cold regions, except the mites, called “difference”, they can also be adaptable to water, both fresh and marine. Most of these species are predators, except for the "difference", which may also have a group of parasites, which attack plants and animals, and can cause the famous scabies (Sarcoptes scabiel).
Alert: Because they live in the soil, many can go unnoticed by people, as in plants, tree trunks, in the house itself, pillows, places with a lot of objects, not forgetting that spiders and scorpions are predators, so it is extremely important to be always watchful.
Arachnids, unlike the arthropod group (locusts, crabs, centipedes, snake lice, spiders of another species) do not have antennae or jaws, because of this fact, they cannot crush the food, so they use the kilifera, which is a structure around the mouth of the species, developed especially to get hold of the food and crush it, this digestion process happens normally, the residues are eliminated by the anus, not so unusual, isn't it?
Below is the image of some arachnids:
Now let's know more details of these groups of animals?
As they are predatory animals, many have venom glands, such as spiders and scorpions, this gland's main function is to paralyze the prey. The scorpion's venom gland is located in the stinger, around its mouth there are the pedipalps, which serve as claws to overcome haste, after haste, they are paralyzed by the venom.
The spider's venom glands work through the quillifera, used to instill the venom into the prey, leaving it immobile.
The spider's morphological structures also contain the pedipalps, which in addition to serving to dominate the prey, also work as sperm storage in mature males, for this the pedipalps have to be dilated to have the transfer.
Many of these mentioned poisons may not be toxic to humans, but it is a great warning as some other species may pose a great danger in your poison, especially for children, remembering that if someone is bitten it is extremely important to seek an emergency room and take the serum to get rid of complications bass.
The mites bring with them a good bunch, like ticks, scabs, blackheads, mites, all belonging to the arachnid class. The “difference” mite can easily be found indoors, such as in carpets, curtains, air conditioning, blankets, and can also cause respiratory and allergy problems.
If you still don't know about mites, here is the image of this very nice animal:
There are more than 50 thousand different species in the world, yes, you didn't read that wrong, 50 thousand species, these little animals can not be seen with the naked eye, because they measure only 0.3 to 0.5 centimeters, it's a little thing, isn't it? But with this size it does a huge amount of damage, there can be more than 100,000 mites on a rug, and it's not the entire rugs, it's just one square meter, imagine doubling this number with the rest of the rug, yes, you can keep your mouth open, it's too expensive to count story.
The worst hasn't been told yet, you know that mattress, that mattress that hasn't been changed for years, that is already part of the family, you know? So, experts say that there are more than 1.5 million mites sleeping right next to us every day, and it doesn't have to be a lot of time on the mattress, just be 2 years old, that 10% of your percent weight is contained by mites, yes, it is shocking and chilling, not forgetting the pillow, which also enters this wave, 1/3 of the pillow's weight is dominated by mites and their, say, droppings. So close to us, right?
In terms of feeding, spiders and scorpions are carnivores, the vast majority of spiders feed on vertebrate animals, frogs, birds, lizards, and amazingly, the spider's appetite can be surpassed by that of the whale, that, of the whale, which generally feeds from 280 to 500 million of tons of food per year, from spiders it is double, 800 million tons per year, competing with us mere mortals, who consume 400 millions. The spider is not weak at all.
The scorpion, on the other hand, likes the night out, that is, they have nocturnal habits, in those habits that consume some type of food, such as termites, cockroaches, crickets, flies, and hatch again, when they lack some kind of food in the region where they live, they practice CANNIBALISM, that's right, they eat animals of the same species, the scorpion can measure up to 25 cm, and have a lifespan of 4 years old. We can feel like scorpions, because I know there are a lot of people who attack the fridge at night, right?
And we cannot fail to mention the mites, which feed on dead human skin cells, are found in pillows, mattresses, sofas, pillows.
See too: Amebiasis, what is it?
Arachnids breathe through the phylotracheal gland, they can also be called "foliaceous lungs", some important points of the breathing process:
In addition to spiders having phylotracheas as a means of breathing, there are also tracheas. The scorpion has only the phylotracheas.
The digestive process of these species is very complex and I would say strange, unlike other animals, the digestive process takes place before the species ingests its prey, being called extracorporeal, this happens because the arachnids consume liquefied food, that is, the melted food, reduced to liquid, to all this occurs, the species has a digestive substance that it releases on the prey before ingesting it, the prey transforms into this liquefied, forming a kind of a folder.
The spider's process is less complex, it happens extra-intestinal, they inject the venom into the prey with their juices. digesters, sucking the fluid from the organs of the prey, this happens because the spider has a strong stomach. sucking power.
The tick (ectoparasite) is the simplest process of all, it only removes the blood from its prey
Some important points of arachnid reproduction,
In some, the female can kill the male after mating, making him prey for consumption.
It's the animal world is pretty weird, isn't it?
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