Parasites: General concepts

Question 1

The 4 parasites of veterinary importance (Phylum)

Answer 1

Phylum Nemathelminthes (roundworms), Platyhelminthes (Flatworm), Subkingdom Protozoa, Phylum Arthropoda

Question 2

Class in Phylum Nemathelminthes

Answer 2

Class Nematoda (Roundworms)

Question 3

Classes in Phylum Platyhelminthes

Answer 3

Class Cestoda (Tapeworms),,Class Trematoda (Flukes)

Question 4

Phylums in Subkingdom Protozoa

Answer 4

Phylums: Mastigophora, Apicomplexa

Question 5

Phylum Arthropoda contain:

Answer 5

Insescta and Arachnida

Question 6

Parasitism definition

Answer 6

a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host

Question 7

Do parasites reproduce at a faster rate than their host?

Answer 7

Yes

Question 8

Host Specific

Answer 8

needs many ways to be able infect host because it is the only host it can infect

Question 9

Broad spectrum

Answer 9

doesn’t need many ways of infecting the host because there are multiple species to choose from

Question 10

Must there always be a definitive host or a final host?

Answer 10

Yes. One or the other

Question 11

aberrant host

Answer 11

dead end host

Question 12

paratenic host

Answer 12

not required for the development of the parasite

Question 13

definitive host

Answer 13

the host in which the parasite reaches maturity in

Question 14

Final host

Answer 14

like the definitive host. it is the host that the parasite prefers and would like to reproduce in

Question 15

Intermediate host

Answer 15

a host that supports parasite until it can reach final host. does not reproduce here

Question 16

transport host

Answer 16

the host that carries parasites between definitive hosts. does not develop in transport host

Question 17

Biological vector

Answer 17

does not cause disease itself but spreads pathogen from host to host

Question 18

Transplacental infection

Answer 18

occurs through the placenta. Fetus is infected

Question 19

direct lifecycle requires how many hosts?

Answer 19

1 host

Question 20

indirect lifecycle requires how many hosts?

Answer 20

2 hosts

Question 21

definitive host only have one host true or false

Answer 21

true

Question 22

sexual lifecycle has what type of diversity?

Answer 22

genetic diversity

Question 23

Sexual reproduction has a long or short lifecycle?

Answer 23

long lifecycle

Question 24

sexual reproduction requires how many parasites?

Answer 24

two, male and female

Question 25

Asexual reproduction has or lacks genetic diversity?

Answer 25

lacks genetic diversity

Question 26

asexual reproduction has a short or long lifecycle?

Answer 26

short lifecycle

Question 27

how many parasites are needed to reproduce asexually?

Answer 27

one!

Question 28

predilection site

Answer 28

preferred site in or on the host

Question 29

aberrant site definition

Answer 29

site in or on a host which is not a normal location

Question 30

when the host dies what 3 combinations contribute to it dying?

Answer 30

parasite x host x environment

Question 31

the parasite host balance depends on (in relation to parasite)

Answer 31

• number of parasites
• location of parasites; migration
• transmission

Question 32

the parasite host balance depends on (in relation to host)

Answer 32

• previous exposure
• type of host response
• nutritional status
• age of the host

Question 33

-iasis

Answer 33

presence of parasite (but no disease)

Question 34

-osis

Answer 34

disease caused by parasite