Parasitology HE 25/26

The scientific study of all forms of symbiosis, including mutualism and commensalism.

The study of how all animal species affect the health of other animal species.

The scientific study of parasites, their hosts, the relationship between them, and the resulting effects on health

The study of all animals that live in or on another species.

The interaction is always negative for one species and positive for the other.

The interaction must be short-term and involve a nutritional relationship.

It is a close, long-term interaction occurring only within individuals of the same species.

It is a close, long-term biological interaction between two different biological species.

A.

The relationship is a long-term symbiotic one between closely related organisms.

The interaction is detrimental to the host's health and well-being.

C.

The parasite and the host must belong to two distinct biological species.

The parasite must rely on the host for its full life cycle.

The paratenic host is required for the parasite to reach maturity, and the accidental host is where reproduction occurs.

The paratenic host is always a predator, while the accidental host is always prey.

The parasite can remain dormant and be transmitted to the next host from the paratenic host, but it is a dead end in the accidental host.

Right

The accidental host is the primary cause of disease, while the paratenic host is never affected by the parasite.

a) Skin rash and mild fatigue only

b) Facial palsy, severe headaches, and joint pain (Lyme arthritis)

c) Weight gain and coughing

d) Sudden blindness and seizures

75%

10%

50%

95%

24 hours

10–14 days

3–4 days

5–7 days

To prevent immediate re-infestation from untreated hosts acting as a reservoir.

To comply with legal requirements for pet parasite control products.

To ensure even dosing of environmental IGRs across the household.

To establish baseline efficacy data for future monitoring efforts.