Solitaire, or pork tapeworm, has a complex life development cycle. The larval form of the parasite affects the muscle tissues and organs of wild and domestic pigs, causing the most serious parasitic cysticercosis disease. From this article you will learn what are the ways of infection with this helminth and how to get around them, keeping the health of pigs. You will learn about the symptoms that indicate the presence of a worm in the body, as well as how to protect animals from infection.
Dangerous tape parasite
A parasitic tapeworm has a complex life cycle, during which a number of transformations take place, including the larval form of life. The intermediate owner is infected with the pig chain, consuming waste or contacting a person infected with the adult form of the parasite. Most often the helminth carriers are wild boar or domestic pig, but cysticerci are able to develop in dogs, rabbits, rabbits or camels.
The final owner of the pig chain is a man. Helminth is able to live in the guts of the carrier for up to 20 years, constantly poisoning it and distributing millions of eggs along with fecal masses. With the help of insects, small rodents and birds, they enter drinking water and food.
The tapeworm is perfectly adapted to the parasitic mode of existence and has a simplified system of vital organs, aimed exclusively at nutrition and the production of offspring.
In the organism of the intermediate host, the larvae develop, turning into cysticercus — capsules that are resistant to the external environment and contain the head of an adult parasite. As a result of eating raw or undercooked meat, the larvae enter the living organism, causing a dangerous disease called teniasis. Read more in the article "The life cycle of pork chain".
Fast growing helminth
The parasite is perfectly adapted to life in the small intestine. It has a small head (up to 3 mm in diameter), on which is located the mouth, surrounded by four suckers. Unlike other tapeworms, the pork tapeworm possesses two rows of powerful hooks, the number of which is capable of reaching 22-32.
This adaptation of the pork chain to a parasitic lifestyle allows the worm to firmly attach to the intestinal walls and actively grow, consuming nutrients from the host's body.
The helminth absorbs nutrients through the entire surface of its body, and excretes its vital activity through the mouth opening, injecting it into the host's epithelial tissue. The presence in the body of the hepatic flukes and pork tapeworm can cause a sharp deterioration in the condition of a sick animal or person.
Armed chain of arms has a segmented body structure, each of its segments (proglottids) feeds through its walls, collecting waste products in the excretory system.
By the way, the pork tapeworm does not have a brain, and its nervous system is maximally simplified. All the details in the article "On the structure of the pork tapeworm".
Poisons the carrier constantly
Ways of infection by the larval form of tapeworm may be different. But an adult parasite settles in the main host solely by entering into its intestines cysticercus, located in the muscle tissue of the intermediate carrier. There is no other way of infection by the tape parasite.
Pork tapeworm penetrates a living organism as a result of eating raw pork meat. Thanks to the hook system, the parasite larva bites into the walls of the small intestine and is no longer able to independently leave the carrier’s body along with its waste products.
Such fitness creates serious problems for the owner. Pork chains feed on juices and grow very quickly (up to 5-8 cm per day). Upon reaching the size of 1 m, the formation of eggs begins, which fill the uterus of each segment-strobila. Due to the absence of the anus, all the waste of the parasite is excreted through the mouth, poisoning the body of the carrier with the waste of life.
Signs of the presence of a worm in the body
As mentioned above, the intermediate carrier of the chain is a pig. If eggs have settled in her body, the symptoms of the disease will manifest themselves only in 2-4 months, when the embryos released will enter the blood or muscles. Most often it is the shoulder blades, shoulders, neck. In addition, it affects the heart, brain and tongue. It is there that cysticercus is formed, which reaches sizes of 20 mm. The larval stage of this disease is called cysticercosis.
There are two types of piglets: Tennuikol and Cellulose, which is otherwise called Finnoz.
If a pork tapew is in the body of an animal, the symptoms are as follows:
- weakness, lethargy and apathy;
- impaired coordination during movement;
- nervousness and bouts of aggressiveness appear;
- appetite worse;
- constipation or diarrhea;
- itching and allergic rash occur;
- drastic weight loss.
Pork tapeworms in tape form for many years live in the body of the main host, causing a dangerous disease, which is called teniasis.
A living organism for tapeworms is an exceptionally suitable habitat rich in nutrients. The parasite will never leave this place on its own, and for its destruction, treatment with medical preparations is necessary. We tell about it in detail in the article "Methods of treating pork tapeworm".
Protect thorough heat treatment
Infection with the adult form of the parasite is possible only by eating the meat of animals, in the muscle fibers of which are cysticercus helminths. Each of them represent a fully formed head of a tapeworm, covered with a dense chitinous shell.
Cysticercus shell is durable and can be destroyed only by high temperatures. The larval form of the parasite dies under the action of salt, but its concentration in meat must be very high.
In order to eliminate the possibility of infection, you should not eat meat that has not passed the proper veterinary examination.
Even buying a product from trusted manufacturers, it is impossible to exclude the possibility that you do not have meat from animals infected with cysticercosis on the table. Pork before eating should be subjected to heat treatment, which will destroy the cysticercus pork tapeworm and hepatic flukes.
Dirty hands disease
Larvae are capable of developing in muscle tissue, heart, liver, brain, as well as the eyes and other organs of the pig. If a large number of burst blood vessels appear in the eyeball, then these are the first signs of a parasite.
Ways of infection with worm eggs can be different, as they are carried by insects, small rodents and birds. In most cases, people become infected with tapeworm without washing their hands after using the toilet and before eating.
Each strobe has a length of up to 15 mm and a width of 6-7 mm and contains up to 50 thousand parasite eggs. Each egg has a microscopic size and is not visible to the naked eye, but provokes the development of the larval form of tapeworm. Therefore, the use of soap and other disinfectants is the best way to prevent infection.
The eggs of the parasite have a solid shell and can be stored for a long time along with the waste of the carrier. Their maximum prevalence is observed in public toilets, so regular sanitary and hygienic treatment of toilets significantly reduces the risk of infection.
It affects the internal organs
Once inside, under the influence of the acidic environment of the stomach, the shell of the egg is destroyed, and the larva of the pork tapeworm begins a new life cycle. Together with body fluids, it spreads through the body, choosing various habitats or muscle tissues that are rich in nutrients as their habitat. Quite often, the parasite settles in the brain or eyeballs, where it develops within 2-4 months, poisoning the organs affected with toxic substances.
The larvae can weaken the body, which can not resist the causative agents of other diseases. They feed on the host's juices, develop and poison the body with the products of their own vital functions.
Upon completion of the larval stage of development, the pig chain is self-encapsulated. Formed Finn or cysticerca, covered with a dense chitinous cover. Inside the capsule is the head of an adult tapeworm, armed with powerful hooks.
The capsule can maintain its vitality for a long time. It is activated only after it enters the stomach of the main host. Under the influence of the acidic environment, the cysticerca shell is destroyed, and the head of the adult worm inside it attaches to the wall of the small intestine and begins its growth.
Human infection with pig chain occurs only when eating poorly roasted or raw pork, which contains the Finnish parasite.
The cysticercus of the tapeworm dies under the influence of an elevated temperature, therefore, in order to avoid damage by this parasite, it is necessary to eat only heat-treated meat.
Fat at risk
Teniasis, caused by the vital activity of this parasite, has a wide geographical distribution. This disease is often fixed in areas where mass pig breeding is developed. In Russia, these are Krasnodar, Stavropol, Altai Territory, Rostov Region and the central strip of the country.
Residents of these territories are often in contact with pigs (including wild boars), consuming their meat. Some people do not understand how you can catch pork chain by using traditional for some southern regions of lard and dried meat.
Most often, this worm is infected by men who eat poorly roasted pork, as well as dried and lightly salted meat. As a result of infestation by a parasite, the carrier's organism weakens significantly, losing immunity. Poisoning caused by toxic waste of a tapeworm can provoke an exacerbation of chronic diseases and significantly worsen the patient's well-being.
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