Anyone familiar harmless herbivorous mollusks with beautiful shells.But there is a dangerous species of these animals, which are parasitic way of life in the human body.We have to find out who are the parasites, mollusks, and examples of which are considered in this article.
What are the soft-bodied animals?
coelomic type of animals, including isolated and shellfish - a soft-bodied protostomes representatives of marine and freshwater fauna, of course, there are species that are well accustomed and on land.Apart from all these lovely creatures, there are those who lead a parasitic way of life, but they'll talk after the present way of life of ordinary clams.
These animals are considered initially bilaterally symmetrical, but by virtue of the uneven growth of individual organs different parts move and there is a natural asymmetry shellfish.
Their body consists of three divisions - it is the torso, head and little feet.All the major organs of the mollusk are in the trunk, because some of the species over time, lose his head.
nervous system of soft-bodied animals consists of four branches - two pedal and two visceral.
This is enough to have an idea of who the shellfish.
What are filter feeders, clams?Description
Bivalves often represented by filter.Lifestyle these animals are generally fixed, and they got the name because of the way the power.While in the water, they are passed through the body fluid and filter it by choosing everything you need for power and survival.Among the filter feeders eat and parasites - clams, examples of which are colorfully described in textbooks of biology.These we will describe in a separate chapter.
In this type no legs, because they are replaced by a sole with which animals and making their movement on the ground, if necessary.There are parasites, mollusks, examples of which are evidenced by the complete absence of any adaptations for locomotion.This is due to the fact that they prefer to still exist, satisfy only eating and reproduction.
body is symmetrical bivalve and sink hidden behind volume, which is attached on both sides.
Not only people may be victims of a parasitic existence, and there are parasites in shellfish, and their diagnosis is carried out in specialized veterinary centers.Quite often it happens that representatives of spineless aquatic animals in some way affected by parasites, which creates a lot of trouble to the owner of the aquarium.
parasites molluscs.Examples and description
Not all mollusks prefer a carefree existence in the expanse of water and crawl on land.There are those who are more comfortable in someone else's body.Examples of shellfish parasites:
- mussel larvae - are able to cling to the fish, and they exist as parasites.Most often, they quietly lie on the bottom waiting for some sacrifices, such as carp.When a fish swims close enough, the shellfish parasite clings to the gills, where they continue to exist.Wherever stuck parasite begins to swell and quickly formed a bump due to the fact that epithelial cells proliferate.It turns out that the clam is fully protected in the created Pumping.
- Shellfish Melanellidae, Stiliferidae, Entoconchidae prefer to settle on the body echinoderms and reproduce them.But some species simply take away their food and do not bring any harm.
Diagnostics parasites
At present, the biologists are actively engaged in studying the issue of parasites that live in the body of mollusks.But not all examples of shellfish parasites can be studied thoroughly.This is due to the fact that some members are several ways of life.
experiments are conducted mainly on such species as M. galloprovincialis and C. gigas.For this data representatives are grown in vitro and their podselyayut parasitic organisms.
parasites molluscs, examples of which we have considered above, are fundamentally different from the species that do become victims of parasites.
The body of a giant oyster can not detect parasites such as polychaete worms and polychaetes, sponge Pione vastifica.
Observations show that oysters affected by parasitic organisms grow much more slowly than healthy representatives.Their shells become brittle and break with little pressure.
Such shellfish is rejected and is not used for the sale and breeding.
dangerous to parasites in the human body?
Examples shellfish parasites show that there is a good chance of becoming a victim of some of them.But all is not as scary as it may seem.
What if the body found in shellfish parasites?Examples of some types of treatment show that this pathology is not terrible.With timely referral to a specialist, you can easily get rid of them and continue to sustain life without someone's existence.
