Nematodes

Question 1

one organism benefits from while the other is unaffected

Answer 1

commensalism

Question 2

both organisms benefit

Answer 2

mutualism

Question 3

one organism benefits while the other is harmed

Answer 3

parasitism

Question 4

shelters sexual, adult stages of parasites

Answer 4

definitive host

Question 5

harbors asexual or larval stages

Answer 5

intermediate host

Question 6

where parasite lives without multiplying or developing

Answer 6

transport host

Question 7

vectors can be

Answer 7

mechanical: parasite does not develop
biological: intermediate host

Question 8

mode of entry into host

Answer 8

infective stage

Question 9

availability of susceptible host

Answer 9

definitive host

Question 10

accommodating locations and environment for maturation and development

Answer 10

different organ systems

Question 11

mode of exit from host

Answer 11

urine, feces, reproductive secretions, etc

Question 12

phylum for roundworms

Answer 12

nematoda

Question 13

shape of roundworms

Answer 13

cylindrical body, multicellular

Question 14

digestive tract of roundworms

Answer 14

one continuous tube from mouth to anus (pseudocoelom)

Question 15

what body systems to roundworms have

Answer 15

digestive and reproductive (no resp. or nervous)

Question 16

what life cycle stage are roundworms infective

Answer 16

L3

Question 17

modes of transmission for roundworms

Answer 17

ingestion, ingestion of intermediate host, skin penetration

Question 18

where are roundworms found in hosts body

Answer 18

feces, blood, sputum, urine, some can be found in lungs, heart, urinary bladder or kidney

Question 19

Ascarids of dogs and cats

Answer 19

Toxocara canis and cati

Question 20

common name for T canis and T cati

Answer 20

roundworms

Question 21

how large are Ascarids

Answer 21

3-18 cm in length

Question 22

Strongyloidea of dogs and cats

Answer 22

Ancylostoma caninum and A. tubaeforme (braziliense and dog and cat)

Question 23

common name for Ancylostoma

Answer 23

hookworms

Question 24

symptoms of hookworms

Answer 24

severe anemia in puppies and kittens

Question 25

Trichostrongyloidea in cats

Answer 25

Ollulanus tricuspis

Question 26

symptoms of O. tricuspis in cats

Answer 26

vomiting

Question 27

Rhabditoidea

Answer 27

intestinal threadworms

Question 28

Metastrongyloidea

Answer 28

hair lungworms

Question 29

where are hair lungworms found

Answer 29

bronchioles and lung parenchyma of sheep and goats

Question 30

Trichuroidea of dogs and cats

Answer 30

Trichuris vulpis and campanula/serrata

Question 31

common name for Trichuris spp

Answer 31

whipworms

Question 32

what do whipworm eggs look like

Answer 32

thick yellow-brown shell with polar plugs

Question 33

urinary bladder worm of dogs and cats

Answer 33

Pearsonema plica

Question 34

Trichuroidea associated with undercooked meat

Answer 34

Trichinella spiralis (Trichinosis in humans)

Question 35

Oxyroidea of horses

Answer 35

Oxyuris equi

Question 36

Oxyroidea common name

Answer 36

pinworms

Question 37

symptoms of pinworms

Answer 37

intense anal pruritis

Question 38

Spiruroidea spp

Answer 38

Habranoma sp and Draschia megastoma (parasites of horses)

Question 39

Spiruroidea of dogs and cats

Answer 39

Thelazia californiensis

Question 40

Thelazia californiensis common name

Answer 40

eyeworms of dogs and cats

Question 41

Spiruroidea of sheep and cattle

Answer 41

T. rhodesii and T. gulosa

Question 42

Dioctophymoidea in dogs

Answer 42

Dioctophyma renale (giant kidney worms of dogs)

Question 43

Stephanurus dentatus

Answer 43

kidney worm in swine

Question 44

Filaroidea

Answer 44

Dirofilaria immitis

Question 45

Dirofilaria immitis common name

Answer 45

canine heartworm (cats and ferrets also)

Question 46

where are heartworms found

Answer 46

right ventricle and pulmonary artery

Question 47

prepatent period for heartworms

Answer 47

6 mo in dogs, 7-8 mo in cats