Intro to Parasites

How many types of symbiotic relationships are there?

5

What are the types of symbiotic relationships?

Predator/prey, Phoresies, Mutualism, Commensalism, Parasitism

Short term relationship where one member benefits at the expense of the other describes which relationship?

Predator/Prey

When a parasite occurs in a host that normally does not live in

Incidental Parasite

Excessive parasitization of the same spots (ie. Heartworms in the Caval Stage)

Superparasitism

Parasites that live inside the body are...

Endoparasites

Parasites that live on/outside the body are...

Ectoparasites

Parasites of different species that infest/infect that animals

Multiple parasitism

How is the host's expense determined?

Number of parasites, kind/degree of damage parasites inflict, vigor or nourishment of host

What are two types of migration?

Somatic and Tracheal

Snails are a type of

Liver Flukes

Host that harbor either adults or sexually mature stages of a parasite

Definitive Host

An intermediate host where no development occurs. Another way from parasites to get from one host to another

Transport Host

Dog and cat flukes have ________ life cycles.

Indirect

Flat, leaf shaped, unsegmented worms, have suckers, hooks, or clam-like appendages

Physical features of a fluke

Parasite that wanders from its usual site of infection into an organ it doesn't belong in

Erratic/Aberrant Parasite

Parasite is not able to live outside of the host

Obligatory Parasite

Live creatures/objects that are not parasites but may be mistaken for one

Pseudoparasite

When a parasite passes through a different type of host before it can re-enter the definitive host, that is called a...

Indirect lifestyle

Explain what somatic migration is.

Travels through different areas of the body and settles in a specific place

An association between two different organisms, where one member lives on/in the other member and may cause harm describes a...

Parasitism Relationship

A smaller organism that lives on/in and at the expense of a large organism called the host, describes....

A parasite

Name the major classes of parasites.

Helminths, Arthropods, Protozoa

What parasites fall under the Helminths?

Nematodes, tapeworms, flukes

What parasites fall under Arthropods?

Insects, arachnids

A DZ transmitted from animals to human is considered a...

Zoonotic DZ

When the parasite goes straight to the host with no stopping, it is called a

Direct lifestyle

When the smaller member of the relationship is mechanically carried about on the larger one, that is called

Phoresis

A host that harbors the larval, juvenile, immature, or asexual stages, and then transfers them to a definitive host, describes a...

Intermediate host

Explain what tracheal migration is.

The travel through the trachea into the intestines

Giardia is an example of a...

Protozoa

Do tapeworms require an intermediate host?

Yes

When a parasite does not have to live in the host, but must make short frequent visits to obtain nourishment, this is called a

Periodic Parasite

Give an example of a periodic parasite

Misquotes, fleas

Which period is longer?

Incubation

Organisms living together describes...

Symbiosis

The host's expense may be ________, _________, or even ________.

Trivial, Substantial, Unbearable

Flat, segmented worms, with suckers or muscular grooves, describes which parasites physical features?

Tapeworms

The time from when the parasite enters the host and the development of signs and symptoms begins, is called the

Incubation period

When both organisms benefit, that is called?

Mutalisim

What is a fancy word for worm?

Helminths

These physical features describe which parasite?

- Longer than are wide

- Unsegmented

- Round in cross section

Nematode

What are some examples of helminths?

Groups of nematodes, tapeworms, or flukes

T or F: Insects and Arachnids are examples of arthopods

T

Caused by a parasite with in the body is called?

Infection

Parasites outside/on the body or in the environment is called?

Infestation

What are the two classifications of parasitism?

Multiple and Superparasitism

When one being benefits and the other is neither benefitted or harmed, this describes..

Commensalism