Tapeworms

These parasites are made up of a head (escólex) and numerous segments or proglótidos, have tape form, the segments contain the reproductive organs of both sex, in addition to eggs. The later segments are given off and the lees are expelled along with from the parasitado animal.
The segments that have been expelled can be near the anus of the animal, and its aspect is similar to the one of rice grains

In the vital cycle of all the tapeworms an intermediary guest exists. Direct transmission of a guest in whom the adult parasite exists, to another guest of the same species cannot happen. Certain part of the formation of the immature tapeworm usually happens in a species different from which adult the infected parasite when. The species in which the immature parasite must pass certain part of its vital cycle before infecting the final guest, is called ?intermediary guest?.

The prevention of the teniasis is implemented with the control of fleas, to avoid the depredation, not to administer crude meat of no animal and to worm every 4 months.

Hidatidosis (echinococcus granulosus)
Granulosus is a disease produced by a called parasite Echinococcus and the definitive guests (they are those where the adult parasite stays itself) are the domestic dogs and some canine wild and live in the thin intestine, measure of 3 to 6 mm in length, (tapeworm) is ?a flat? parasite and its body has three segments and in the last it has several hundreds of eggs that are disintegrated in environment when it is eliminated with lees of the dog. Each egg contains an embryo which it must be ingested by an intermediary guest (he is that one where the youthful form of the parasite is developed) and are ovine, goat, bovine, pigs, equinos, camelidaes (Asian and American), cervids and the man. The embryo frees itself in the thin intestine of the intermediary guests, crosses the intestinal wall and is taken by the sanguineous current to several organs, where the larval stage is developed, hidátide or hidatídico cyst. The most frequent location of these cysts is in liver and lungs, but sometimes it can be located in other organs (bones, kidney, brain, etc.). The interior of the cyst is full of liquid where prolight vesicles float (that are the infectante element) that the flame ?hidatídica river sand?. The cycle is completed when the dog or another canine one ingest vísceras with hidatídicos cysts that contain fertile cysts of an ovine or another intermediary guest.

In the man the rates of I infect more discharges are registered in cattle places, mainly in those of young of ovines. In essence one is a infestación of rural means, although also cases in urban areas happen.
Many cysts are asintomáticos during all life., but in other cases the cyst can reach a very great size and to contain several liters of liquid, the great danger, sometimes with death risk, they are the breakage of the cysts that can cause an allergic reaction (anaphylactic shock), also exists a dissemination of the cyst with the formation of new and numerous hidatídicos cysts. Main sintomatologia is given by the pressure that exerts on the affected organs as it increases of size.

I infect in the man happens when the dog licks the anus and exist eggs in he himself, who by means of the language scatters by all his body, the man can be contaminated the hands when touching the animal. The near contact with the animal and the deficient practices of personal hygiene is important factors in I infect of the dog the man. Another source of important infection can be the contaminated vegetables and the water with eggs of the parasite. Although the hidatidosis usually is a disease that affects the rural population, frequently happen urban cases of the disease when the dogs are fed by means of contaminated crude vísceras with eggs of the parasite.

Dipylidium Caninum
It is the common tapeworm of the dog and also one is in the cat and sometimes in humans. In animals, this parasite is in the thin intestine, when the infestación is serious or the animal is in bad conditions of health, the dipylidium caninum can cause abdominal annoyances, loss of weight or both things.
The intermediary guests of D. caninum are the flea of the dog, Ctenocephalides canis, the flea of the cat, Ctenocephalides felis, and the human flea, Pulex irritans.
The larvae of these fleas become infested when ingesting eggs of the tapeworm. The sometimes human dogs, cats and are parasitados when swallowing infested fleas. If it is wanted to suitably control to Dipylidium caninum they must also control suitably the fleas in dogs and cats.
More information in transmission of tapeworms by fleas.

Bibliography

Author: MV Enrique L. Fernandez De Vanna

 

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