Parasitism - Definition, types and examples

Parasitism is one of the most widespread life strategies in the Animal Kingdom, being at least 20% of the parasitic animal species of other organisms.

There are taxa only composed of parasitic beings, such as viruses and acanthcephals (parasitic worms).These types of organisms live at the expense of other living beings, either during their entire life or for a short period.

In this article of Animals and Pets Online we will learn the definition of parasitism, the different types that exist, we will understand what advantages and disadvantages this style has of life and we will know some examples.

What is parasitism?

Parasitism is a type of symbiosis in which one of the organisms involved (host) is harmed, that is, it does not obtain any benefit and also suffers damage derived from the relationship.On the other hand, the parasite find in this relationship its survival mode.This type of relationship is maintained until one of the two individuals (parasite or host) dies.

Within this relationship, each member belongs to a different species.parasito needs to live in the host to get food, often genetic material for the creation of their own proteins and, in addition, finds in the host their habitat, without which they could not live.

For everything this, parasites are organisms that need a close and continuous relationship with a host (of another species), which provides food, digestive enzymes or materials and stimulates them to develop or reproduce.

Types of parasitism

There are several ways to classify parasites, then we show you the best known or used:

Taxonomic classification: taxonomically, parasites are classified as phytoparasites when they parasitize plants and zooparasites when they infect animals.In parasitology, a science that studies parasites, only zooparasites are treated.

Classification according to the level of dependence the parasite has on the host:

Optional parasite: are those species of parasites that are capable of living through another form of life in addition to the parasitic.
Mandatory parasite: they are those that cannot live outside the host, they depend totally on it for any stage of development.
Accidental parasite: they are the parasites that, by mistake, end up inside an animal which is not their usual host and, despite this, gets Survive.
Erratic parasite: parasites that live in e The interior of the animals usually do so in a specific organ or tissue.A parasite that is in an organ that is not normal is known as an erratic parasite.

Classification according to the location of the parasite within of the host:

Endoparasite: are the parasites that need to live inside the host, such as the heart, lungs, liver or digestive tract.
Ectoparasite: they live on the host, never inside.For example on the skin or hair.

Classification according to the period of time that the parasite keeps the host parasitized:

Temporary parasites: the parasitic phase is temporary and only occurs on the surface of the animal (host), never inside.The parasite is fed on the host, its skin or blood, for example.
Periodic parasite: the parasite needs to pass one of the stages of his life (egg, larva, juvenile or adult) inside the host, then he will live freely.
Permanent parasite: the parasite must spend his entire life inside or outside the guest if he wants to survive.

Advantages of living as a parasite

In the beginning, the animals we know today as parasites had a free lifestyle in the past.The fact that at a given moment in evolution these animals acquired a parasitic lifestyle, it suggests that they should get some kind of benefit.

The first advantage that parasites find is that of habitat.Animals have mechanisms to keep homeostasis inside their body, which gives the parasite the possibility of living in a medium that barely has fluctuations.

On the other hand, they have an easy way of distributing their offspring over large areas quickly.For example, if the parasite releases eggs to through the feces of his host, it is certain that his offspring will develop in other places.For a parasite the food is always close and available, because it feeds on the host itself or part of the food that it eats.

Disadvantages of living as a parasite

Not all are advantages for parasitic life animals.The fact of living inside a body makes the parasitic congenres far away, both in space and time, since they will live in other guests, Therefore, strategies for sexual reproduction must be found in order to combine genetic material.

As a rule, guests do not want to be parasitized, so they will be hostile to parasites and try to get rid of them.at all costs, for example, through grooming.In addition, the guest may die, so the habitat is not forever.

Examples of parasitisms

In this section we show you some of the most known and common parasitic relationships, many of them, are also zoonoses.

Coccidiosis is a disease caused by a group of protist parasites belonging to the subclass Coccidiasina.Coccidia are obligate intracellular parasites, so they need a host to live, they must also be found not only inside the animal, but inside their cells.
Echinocosis or hydatidosis is another serious disease caused by the relationship that occurs between a parasite of the Cestoda class and a mammal, usually cattle, pets or the human being itself.Cestodes are endoparasites of the digestive tract like tapeworms.Their larvae can travel through the blood to other organs such as the liver, producing hydatid cysts.
Fleas and lice are other good examples of parasitism.In this case, parasites live on the animal and not inside it.

If you want to read more articles similar to Parasitism-Definition, types and examples , we recommend that you enter our Curiosities section of the animal world.

Bibliography

Palacios, JT, Chiaretta, A.,&Lovera, H.(2006).Parasitism: An Interspecific Association.Argentina: National University of Rio Cuarto.
Posada, JOA (2014).Description of the most common intestinal parasites in canines taken to the Lasallian Veterinary Clinic Brother Octavio Martinez Lopez.Journal of Agriculture and Animal Sciences, 2 (1).
Taylor, MA,&Catchpole, J.(1994).Coccidiosis of domestic ruminants.Applied Parasitology, 35 (2), 73-86.

Comments

12 animals of Patagonia that you should know

Animals of Chilean and Argentine Patagonia Generally, Patagonia is usually "divided" into two large areas or regions: the coastal or coastal zone , which is cleared by the Atlantic Ocean on the Argentine side and the Ocean Pacific, in Chile, and the continental or Andean-Patagonian region that includes the most central regions, with predominantly desert climates, up to the Andes Mountains, with a great predominance of humid and glacial forests. In addition to the differences in the landscape, it is also possible to note that biodiversity is usually different in these regions.In the coastal region, we observe a clear predominance of fish, birds and aquatic mammals, while in the area continental land mammals and species adapted to freshwater bodies, mainly lakes and lagoons stand out. As in both regions, we find several locations with similar microclimates and environmental conditions in both Chilean Patagonia and the argenti na, it is possible to find many species tha...

How to care for a cat with a broken hip

My kitten, we do not know if she suffered a blow or fell hit, the report is that she ran her back a bit, she has no owner recognizes me because I give her to decommission at specific times, she does not attack but she defends herself it is not allowed to touch it has been almost impossible to grab it to place it in the transporter covering its head, now it is in my house to build a shelter it hides under a sofa and makes its needs but I do not see it eat I think it takes water this happened on 22/1 and today is 1/28/2019, they have dared me but I have no experience with animals that are not domesticated and that do not let themselves be touched, it is very intelligent, it hides recognizes the place and I do not know if I should leave it there, I put the sanitary stones and she goes and does her needs and retires down from the sofa I have her fenced, and for now when she is seen I see her well, she does not take the medication for pain and to solidify her bones, but neither does she com...

Animals with exoskeleton - Names and examples

The body of the largest vertebrate animals is not a mystery to most of people: it is known that it has a skeleton, internal vital organs (heart, brain, etc.), a dermis of variable and organ characteristics through which the five senses are manifested, among other characteristics. However, have you wondered what the invertebrate morphology is like? Then you need to know all about the animals with exoskeleton, names and examples. Don't miss this Animals and Pets Online article! What is the exoskeleton? The exoskeleton is an external structure that covers the body of various animals, including arthropods.It is characterized by being resistant but flexible .This structure It consists of different substances depending on the subfile to which the animal belongs: chitin for insects and fungi, calcium in mollusks and corals or silica in diatoms among other components. In turn, the exoskeleton is formed by three structures : Cuticle : non-cellular layer secreted by the hyp...

Clean a dog's ears step by step

Cleaning the ears of the dog is a behavior that we should carry out regular, whether it is a puppy or an adult dog.It is very important to apply frequent hygiene of the ears to avoid the appearance of fungi. Next we will explain what products you need to carry it out and how It must be the method for everything to go perfectly. Keep reading this complete article by Animals and Pets Online and discover how to clean the ears of a dog step by step : Steps to follow: 1 The first step will be to gather all the materials that we may need to clean the dog's ears properly: sterile gauze swabs physiological serum Instead of physiological serum you can also choose to use hydrogen peroxide or specific preparations that we will find in any pet store.What is recommended is Apply sterile gauze as the cotton can fray inside the ear of the dog and rot.Finally, and for a much more thorough cleaning we may need swabs, yes, baby.Much safer. 2 It is important to keep in mind ...

15 pollinating animals - Characteristics and examples

What is pollination? Reproduction of most plant species occurs sexually, that is, it requires the union of female and male cells for fertilization .Cells are found in pollen (male), so it needs to be transferred to the flower pistil (female), where fertilization occurs and, after this process, the flower becomes a fruit with seeds. So, when we talk about the reproduction of plants, the intervention of a third party is often required, which is known as " pollinator " to do it possible. These pollinating agents can be insects, other animals and even natural elements such as water and wind.In the case of animal species, they have found a balance with the flora and evolved together, so that plants have been able to produce flowers of different aromas, shapes and colors in order to attract pollinating agents to feed on the nectar. When animals feed on the nectar, transport pollen involuntarily on their legs, wings or another part of the body.When covered with polle...

How to scare stray cats? - 15 non-harmful remedies

The presence of stray cats In the home it is not always welcome, especially if they defecate, dig and break the decorative plants or the garden.In fact, it can be considered a risk situation if they are also wild cats, since they are not properly socialized and can be carriers of parasites and viral diseases, factors that can worry parents and animal owners. Therefore, although we consider ourselves animalistic, we can face a serious dilemma when we want to scare off street cats that appear in our garden or terrace.Is there a really effective repellent for cats? How to drive away cats without harming them? Is it possible to apply any method to drive away effective and lasting stray cats? Or worse: it may not even be street cats, but domestic cats that take advantage of your garden to do their needs.What should we do then? In this article of Animals and Pets Online we will explain How to drive away stray cats with basic and effective advice, we will propose some home remedie...

Common diseases of beagle dogs

The most common diseases in beagle dogs are mainly those that affect to the eyes, the skin and the ears .However, they are not the only ones, and it is that this canine breed, like most, is prone to suffer from hereditary or genetic pathologies.The beagle is a canine breed native to the Kingdom United, characterized by dogs of medium height, with a compact and muscular body, and short fur.From their origins, they have been used in hunting tasks.They love physical activity, so they are great runners, and they love digging holes on earth. In general, this breed is quite healthy, so it is not easy for them to become infected with viruses or develop a health problem, but there are certain ailments to which they are prone.Keep reading this Animals and Pets Online article so you can find out what the common diseases are it's in beagle dogs. Eye diseases in beagle dogs Eye diseases are the most common in Beagle dogs, so if you have one at home you should perform an eye check per...

ALL ABOUT THE FEVER IN DOGS

The fever in dogs or fever Canine is an increase in body temperature above normal values, which are between 38 and 39ºC , due, for example, to an infection or inflammation.There are different causes that cause the fever and we can easily measure it with the use of a digital thermometer. Next, in this article of Animals and Pets Online we will explain everything you need to know about fever in dogs, causes, symptoms and treatment to be applied to lower it.That is, if you suspect that your dog may suffer from fever, we recommend you go to your trusted veterinarian to discover the cause that is causing it and the treatment indicated according to your specific case. What temperature is considered fever in dogs? Fever is an excellent defense mechanism of the body .By increasing body temperature, the immune system seeks to destroy the pathogen.Therefore, it is a immune system reaction very beneficial for the dog in the face of an illness. The normal temperature of a dog Th...

Indigestion in dogs - Symptoms and home remedies

Indigestion or empacho is characterized as a general indisposition caused by excessive consumption of food or some digestive difficulty.Not only we, human beings, can be affected by these episodes, but the empacho in dogs is more common than we tend to imagine. Although we are accustomed to thinking of empacho as something normal or as a "minor problem", episodes of indigestion in dogs should not be ignored, since they can cause digestive problems, such as the accumulation of gases in the gastrointestinal tract , which affect the animal's well-being.Besides, the habit of eating too much or swallowing the food at once without chewing it, is an alarming risk factor for gastric torsion, one of the deadliest diseases in dogs. In Animals and Pets Online always We strive to provide you with content that helps you take better care of your most faithful companion, so we have prepared a special article on dog sitting, its symptoms, causes and risk factors .At the end of ...

Can I bathe my dog if I just wormed him?

When is it a first time in adopting a dog, it is normal that many doubts arise about what is best for them and when it is advisable to do everything, so Animals and Pets Online solves all the questions that arise. Deworming your dog periodically is necessary to preserve their health and avoid possible diseases from the action of microorganisms, external and internal parasites, among others.If you do not know when you should bathe your dog after a deworming , keep reading this article. Why deworm the dog? You may think that deworming is not necessary, but the truth is that thanks to it you avoid your dog much discomfort, in addition to prevent diseases transmitted by parasites . Among the main parasites, both external and internal, are ticks, fleas, lice, losacaros and intestinal worms, among many others.Pruritus, hair loss, diarrhea, tick disease, and even death in the most serious cases, they are part of the consequences that cause these beings to stay in the body of your furr...

Animals and Pets Online

Search This Blog