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PH 177 > Mites and Ticks > Flashcards

Mites and Ticks Flashcards

1
Q

answer M if applicable for mite & T if applicable for tick

A. suborder Metastigmata
B. body with long hairs
C. exposed hypostome with teeth
D. membranous in appearance

A

A. T
B. T
C. M
D. T

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2
Q

answer M if applicable for mite & T if applicable for tick

A. heavily chitinized chelicerae
B. pedipalps almost lacking in segmentation
C. body has long hairs
D. suborder Mesostigmata

A

A. T
B. M
C. M
D. M

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3
Q

A. chelicerae reduced to blades or rods
B. pedipalps distinctly segmented
C. hidden and unarmed hypostome
D. leathery in appearance

answer M if applicable for mite & T if applicable for tick

A

A. M
B. T
C. M
D. T

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4
Q

A. with Haller’s organ
B. have a pair if lateral stigmata located behind a third coxa
C. usually brown

answer M if applicable for mite & T if applicable for tick

A

A. T
B. M
C. M

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5
Q

Which is false?
A. Arachnids are holometabulous
B. Mites don’t have Haller’s organ
C. Toothed hypostome present in adult ticks

A

A

arachnids - hemimetabulous

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6
Q

Why do ticks undergo quiescence?

A

provide adequate moisture and protection against adverse environmental conditions; this helps to ensure that a certain segment of the tick population is able to withstand a colder than normal winter or survive during dry spells.

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7
Q 
False about questing behavior of ticks
A. crawl up on stems of grass/edges of leaves
B. front legs are extended
C. carbon dioxide inhibits this behavior
D. this is in response to a predator
A

C & D
CO2 - stimulator
this is in response to a host passing by

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8
Q

identify

family considered to be missing link of soft ticks to hard ticks

A

Nuttalliellidae

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9
Q

hard ticks belong to family ___ while soft ticks belong to family __

A

Ixodidae

Argasidae

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10
Q

___, or the American dog tick is the

vector of Rickettsia rickettsii or (what is its common disease name)?

A

Dermacentor variabilis

Rocky Mountain Spotted Fever

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11
Q 
Ixodes scapularis or (what's the common name?) may transmit the ff except
A.anaplasmosis,
B.babesiosis
C.plague
D.Lyme disease
A

black-legged tick

C

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12
Q

brown dog tick or (what’s the sci name?) is considered reservoir of (what disease?)

A

Rhipicephalus sanguineus

Rocky Mountain Spotted Fever

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13
Q

Gulf Coast tick (what is sci name?) can transmit (what pathogen?)

A

Amblyomma maculatum

Rickettsia parkeri

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14
Q

Lone star tick(what is the sci name?) transmits pathogens that cause (what illness)?

A

Amblyomma americanum

human ehrlichiosis

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15
Q

complete list of diseases transmitted by Amblyomma americanum

A

human ehrlichiosis
tularemia
STARI: Southern Tick-Associated Rash Illness

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16
Q

A.Relapsing fever tick is also known as (what genus name)?

B. Common fowl ticks is AKA (sci name)?

A

A. Ornithodorus sp.

B. Argas radiatus

17
Q

T/F human is accidental host of Amblyomma americanum for ehrlichiosis

A

T. Deer talaga host nila

18
Q

A.The relapsing fever tick: (sci name)?
B. color before feeding
C. color after feeding

A

A. scientific name: Ornithodorus hermsi
B. sand-colored
C. grayish blue

19
Q

A. scientific name for woodchuck tick

B. it’s vector of ___

A

A. Ixodes cookei

B. Powassan virus

20
Q

A. scientific name of winter tick

B. T/F This tick primarily feeds on humans

A

A. Dermacentor albipictus

B. F

21
Q

A.How do ticks and mites trasmit rickettsia?
B.How do fleas and lice transmit rickettsia?
defecation or crushing releases organisms from intestinal tract to the human skin

A

A.direct inoculation through arthropod saliva

B.defecation or crushing releases organisms from intestinal tract to the human skin

22
Q 
False about mites
A.Larvae= 8 legs
B.Genital opening is found underneath and between
the attachments of the first
two pairs o legs.
C.Mouthparts consist of appendages
A

A.

larvae only has 6 legs

23
Q

[Mite]
A. purpose of mouthpart appendages
B. How does a mite walk?
C. T/F Legs may sense touch, odor and light (depending on species).

A

A. guide other food particles
B.using body muscles to press blood to indiv legs
C. T

24
Q

A. mite family for Scabies

B. mite family whose larva is called chiggers

A

A. Sarcoptidae

B. Trombiculidae

25
Q

identify the mite (sci name)

  • burrows into the upper layer of the skin where it lives and lays eggs
  • intense itching & pimple-like skin rash
  • direct, prolonged, skin-to-skin contact with a person who has scabies
A

Sarcoptes scabiei

26
Q

A. follicle mite @ human hair follicle
B. follicle mite @ human sebaceous glands
Demodex brevis
C. T/F Infestations of follicle mite: higher @ young people

A

A. Demodex folliculorum
B. Demodex brevis
C. F

27
Q

mange
A. refers to __
B. what exacty happens

A

A. canine scabies

B. affected dogs –> ext itchy, patchy hair loss from excess scratches, bite, lick

28
Q

False about red mange
A. also called sarcoptic mange
B. all dogs raised normally by their mothers possess red mange mites which are transferred via cuddling during first few days of life

A

A - demodecitic mange to

29
Q

false about sarcoptic mange
A. adult female’s four pairs of legs end in setae
B. male mites only have setae @ 3rd pair of legs. the rest: pedicels & caruncles
C. large triangular spines @ dorsal surface: more seen @ females
D. adult male has marked thickening @ ventral surface

A

A - only last two legs end in setae

the rest end in pedicels

30
Q

In humans, demodectic mange mites are found in three locations. Enumerate

A

skin
eyelids
nose creases

31
Q

false about chiggers
A. larva of family Trombiculidae
B. they primarily irritate humans with their bite
C. they inject digestive enzymes into host skin to break down skin cells

A

B. they do not bite; they form a hole called “stylostome” & chew up tiny parts of inner skin

32
Q

A. two primary methods to prevent tick infection

B.tool used to gently remove ticks, esp anchoring mouthparts

A

A.repellent & appropriate clothing

B.forceps

PH 177 (10 decks)

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