Nematodes

Front 1

Genus of the bacterial symbiont of Steinernema species.

Back 1

Xenorhabdus_____.

Front 2

Common name of the only nematode infecting humans that
is acquired by drinking water containing the infected intermediate hosts

Back 2

__Guinea worm

Front 3

True or False. Human infection with Brugia malayi occurs when
L3 (=J3) stage nematodes are injected into the human bloodstream as an infected
female mosquito takes a blood meal.

Back 3

False

Front 4

Approximately what percentage of lymphatic
filariasis infections eventually cause elephantiasis (choose from: 80%, 50%, 25%,
<10%)

Back 4

100%

Front 5

Which sex of root-knot nematode adults has a
typical vermiform or spindle-shaped appearance?

Back 5

Male

Front 6

True or False. It is possible to diagnose human lymphatic
filariasis by examining human blood for microfilaria.

Back 6

True

Front 7

Hydrocoele and elephantiasis occur during
the [blank] phase of lymphatic filariasis.

Back 7

_____ obstructive

Front 8

This nematode species (scientific name)
lives with most of the anterior half of its body inserted into the lining of the large
intestine, but the thicker posterior part of the body hangs free in the lumen.

Back 8

Trichuris trichiura

Front 9

Some infective juvenile nematodes
of the genus Steinernema can jump as part of their host-finding behavior.

Back 9

True

Front 10

Severe skin itching is characteristic of this
insect-transmitted human nematode infection (give scientific name).

Back 10

Onchocerca volvulus

Front 11

True or False. All known plant parasites are
from the Secernentea

Back 11

False

Front 12

Name of the particular juvenile stage (J1-J4) of
Meloidogyne that first invades plant roots.

Back 12

J2

Front 13

True or False. The video on root-knot nematode
showed that juveniles that attempted to invade the plant by way of the root tip were
unsuccessful.

Back 13

True

Front 14

Rapid thrusting (protrusion) of this structure
[name] is involved in successful migration of root-knot nematodes within plant roots.

Back 14

Stylet

Front 15

The search strategy behavior of an
entomopathogenic nematode that is best adapted for finding sedentary insects in the
soil is called [blank].

Back 15

Cruiser

Front 16

In root-knot infections, nematodes of this
sex establish permanent feeding sites within roots.

Back 16

Females

Front 17

The name (2 words) for the type of plantparasitic
nematode that throughout its life moves around within the root tissue as it
feeds.

Back 17

migratory endoparasite

Front 18

True or False. With proper precautions,
entomopathogenic nematodes can be applied effectively using conventional spray
equipment.

Back 18

True

Front 19

True or False. Brugia malayi has several nonhuman
reservoir hosts

Back 19

True

Front 20

True or False. Filtering drinking water through
nylon mesh can be an effective method of preventing Guinea worm infection.

Back 20

True

Front 21

Give the scientific name of the organism that causes most cases of
lymphatic filariasis in humans.

Back 21

Wuchereria bancrofti

Front 22

(True or False). Nematodes of the genera Steinernema and
Heterorhabditis form a monophyletic group (share a most recent
common ancestor).

Back 22

False

Front 23

The intermediate hosts of Onchocerciasis are called (genus name).

Back 23

Simulium______________.

Front 24

Photophobia, eosinophilia and itchy skin are symptoms of this
disease.

Back 24

Onchocerciasis____________.

Front 25

True or False). Dracunculus medinensis can only use humans as a
definitive host.

Back 25

False

Front 26

In the Dracunculus life cycle, this larval stage (L1, L2, L3, L4?) is
ingested by the intermediate host

Back 26

L1

Front 27

This genus of EPN (entomopathogenic nematode) has an intestinal
caecum (or pouch) that it uses to sequester its symbiotic bacteria

Back 27

Steinernema____________.

Front 28

Following initial infection of humans, approximately how long does
it take before female D. medinensis emerge from the skin?

Back 28

9 month- year

Front 29

(True or False). The stage of hookworms that is infective for
humans (penetrates human skin) does not feed during its lifespan
as a larva.

Back 29

True

Front 30

Scientific name of a nematode that can cause diarrhea, anemia, and
rectal prolapse in humans (the latter primarily in children).

Back 30

Trichuris trichiura

Front 31

Give the scientific name of one nematode species that
produces sheathed L1 that are found in the peripheral blood of
humans.

Back 31

Wuchereria bancrofti, Brugia malayi

Front 32

Damage to the human eye in Onchocerciasis is due to this nematode
stage (give stage number OR name of stage

Back 32

___L1 or microfilaria

Front 33

The biological vectors of lymphatic filariasis are called
(common name).

Back 33

mosquitoes

Front 34

In what region of the world are onchocercomas more typically
located on the head and neck region of infected humans

Back 34

__central/south America

Front 35

Genus of bacteria symbiotic with Heterorhabditis nematodes

Back 35

Photorhabdus

Front 36

In the year 2000 (and after), the name of the country that has been
responsible for more cases of Dracunculiasis than any other.

Back 36

Sudan

Front 37

Of the two hookworms that infect humans, this species [scientific
name] consumes more blood per day per worm.

Back 37

Ancylostoma duodenale

Front 38

(True or False). Mass drug treatment campaigns for control of
Onchocerciasis focus on interrupting transmission by reducing
microfilarial release rather than through the killing of adult worms.

Back 38

True

Front 39

(True or False). The bacteria that are symbiotic with EPNs
(entomopathogenic nematodes) produce antibiotics following
establishment of infections in insect hosts.

Back 39

True

Front 40

Protein deficiency and anemia can occur during high intensity
infections of humans with this nematode [give name of disease]

Back 40

Hookworm disease

Front 41

Location where adult Brugia malayi nematodes are found in
humans (be specific).

Back 41

__lymphatic vessels_________.

Front 42

Approximately how many million people are infected
worldwide with the nematodes that cause lymphatic filariasis?

Back 42

120

Front 43

What is the scientific name of the nematode that causes
Onchocerciasis?

Back 43

Onchocerca volvulus______.

Front 44

In lymphatic filariasis, what phase of the disease in humans is
associated with chills, fever, and swelling of the infected
lymphatics?

Back 44

Acute

Front 45

What job/occupation is at higher risk of getting cutaneous larva
migrans in the Southern U.S.?

Back 45

PLumber

Front 46

This term describes the behavior where nematodes stand on their
tails and wave around.

Back 46

Nictation

Front 47

Photophobia and eosinophilia are symptoms of this disease.

Back 47

Onchocerciasis____.

Front 48

Rectal prolapse sometimes occurs as a consequence of this nematode
infection (give scientific name).

Back 48

Trichuris trichiura

Front 49

Which larval stages of hookworms feed on bacteria in the environment?

Back 49

L1 and L2

Front 50

The long thin anterior end of this nematode is threaded through the
large intestinal mucosa of humans (give scientific name).

Back 50

Trichuris trichiura

Front 51

What nematode class does the organism Trichuris trichiura belong to

Back 51

Adenophorea

Front 52

Give the
scientific name of a nematode that can cause CLM.

Back 52

Ancylostoma caninum

Front 53

This stage of hookworms can penetrate skin.

Back 53

L3/filariform

Front 54

This hookworm species (scientific name) may cause eosinophilic
enteritis in humans

Back 54

Ancylostoma caninum

Front 55

Onchocerca volvulus adults normally live [where] in humans

Back 55

subcutaneous

Front 56

The CFA test is for the disease [blank].

Back 56

____lymphatic filariasis

Front 57

The second molt of Onchocerca volvulus occurs in this organism
[common or genus name].

Back 57

_blackfly/Simulium

Front 58

Of the two common human hookworm species, this one (scientific
name) has a stoma with cutting plates

Back 58

____Necator americanus

Front 59

Hookworm adults normally live in this location within humans [be
specific].

Back 59

Small intestines

Front 60

This genus of nematode is symbiotic with Xenorhabdus bacteria.

Back 60

Steinernema

Front 61

Copepods are the intermediate host of this human disease.

Back 61

Dracunculiasis/Guinea worm

Front 62

Filarial nematodes such as those causing lymphatic filariasis harbor this
genus of bacteria.

Back 62

Wolbachia

Front 63

Another name for the L1 stage of the nematode causing filariasis.

Back 63

microfilaria

Front 64

Scientific name of the nematode that has been used to treat Chrohn’s
disease

Back 64

Trichuris suis

Front 65

This genus of EPN can penetrate the cuticle of host insects

Back 65

Heterorhabditis

Front 66

important nematodes for crop parasites

Back 66

Tylenchida and Aphelenchida

Front 67

Root-lesion parasite

Back 67

Pratylenchus

Front 68

Root-knot Nematodes

Back 68

Meloidogyne spp. can parasitize vitually all plants

Front 69

features of Meloidogyne life cycle

Back 69

J2 hatches from egg and penetrates root tip - induces giant cell formation

Front 70

Tylenchid feeding tubes

Back 70

secreted by non-gland nema tissue

Front 71

Important gas for strawberries

Back 71

Mythal bromide