Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BSC Zoology - Parasitology > 27. Arthropods (bugs & flies) > Flashcards

27. Arthropods (bugs & flies) Flashcards

1
Q

what are the two families of medical importance in order Hemiptera, in the suborder bugs?

A
  1. Reduviidae: assassin bugs, kissing bugs (carries the protozoan T. cruzi)
  2. Cimicidae: bed bugs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what did bed bugs evolve from?

A

ectoparasites of cave dwelling mammals, most likely bats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the three closely related species of human bed bugs?

A
  • Cimex lectularis
  • Cimex hemipterus
  • Cimex boueti
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

humans may become _____________ hosts of Cimex species of bats and birds

A

incidental

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is the Cimex lectularis?

A

the common bed bug, with a cosmopolitan distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the Cimex hemipterus?

A

the indian bed bug, restricted to the tropical and sub-tropical regions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the Cimex boueti?

A

found in tropical regions of Africa and South america

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

where are bed bugs found?

A

in human habitations, including homes, hotels, dormitories, prisons, barracks, and hospitals
–> in cracks, furniture etc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what time of day do bed bugs appear?

A

at night or in dimlight to feed on a sleeping host

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

how many times do bed bugs bite?

A

characteristically bite two or three times in succession over a period of a few minutes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what do bed bugs inject when feeding?

A

salivary fluids (anti-coagulants and anaesthetics), thereby sensitizing the hist

  • repeat exposure may cause a delayed reaction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

the larvae are the _______

A

nymphal stages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

how many nymphal stages do the bed bugs have?

A

5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

are bed bugs effective vectors of disease?

A

no, although they have been found naturally infected with blood borne pathogens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the primary medical importance associated with bed bigs?

A

inflammation associated with their bites (due to allergic reactions to components in their saliva)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the treatment for bed bugs?

A

the bites are usually self limiting, and require little attention other than antiseptic creans or lotions to prevent infection at the bite site

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what do biting midges transmit?

A

filariid nematodes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what do sandflies transmit?

A

Leishmaniasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what do black flies transmit?

A

Onchocerciasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what do mosquitoes transmit?

A
  • malaria

- filariasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what do horseflies and deerflies transmit?

A

filarial eye worm, Loa loa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what do the Tse tse flies transmit?

A

african sleeping sickness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what are the diptera?

A

winged flies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

do all diptera adult flies inflict damage by biting/while seeking blood?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

the larvae of several families of diptera are ________ during development, livinhg within the tissue of the infected host

A

pathogenic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

what are the flies that require living tissue for development?

A

obligate parasites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

what is myasis?

A

burial of larvae in tissue - is an obligatory step in the life cycle of some flies and incidental for others

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

where are the tissues in which myasis can occur?

A 
cutaneous 
arterial 
intestinal 
urinary 
-
normal tissue or in preexisting wounds, some of which result from other infection
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

what do the larvae of diptera use to burrow through nectrotic tissues or healthy tissues?

A

their mandibular hooks aided by proteolytic enzymes

30
Q

what stage of flies causes myasis?

A

the larval stage (maggots) of various flies

31
Q

Dermatobia hominis is the primary human ________

A

bot fly

32
Q

Cochliomyia hominivorax is the primary _________ in the New World.

A

screw worm fly

33
Q

Chrysoma bezziana is the ________

A

old world screw worm

34
Q

Cordylobia anthropophaga is known as the ________

A

tumbu fly

35
Q

after how long do the bot fly larvae hatch?

A

5-10 weeks

36
Q

what is the hole in the skin made by the bot fly?

A

an air hole for the posterior spiracles

37
Q

what are the posterior spiracles?

A

the respiratory organs - a series of external openings

38
Q

where do new world screw worms lay their eggs?

A

around the edges of wounds

39
Q

what do the larvae of screw worms invade?

A

wounds, after the eggs have been laid near the wounds

40
Q

can a large or small number of screw worm larvae infest a wound?

A

a large numebr

41
Q

what do the old world screw worms invade?

A

the larvae penetrate wounds or mucous membranes, primarily affecting areas around the eyes, mouth and nose

42
Q

what do tumbu flies cause?

A

accidental myasis

43
Q

where do tumbu flies lay eggs?

A

on contaminated soil with urine or feces

44
Q

what do emerging larvae of tumbu flies attach themselves to?

A

any host they come in contact with and penetrate the skin

45
Q

what are infestations with D. hominis (bot fly) characterized by?

A

cutaneous swellings on the body or scalp that may produce discharges and be painful

46
Q

what is different in infestations with C. homnivorax?

A

they can be more serious,as this species may travel through living tissue in the body and not stay subdermal like most of the other species of flies that cause myiasis

47
Q

what else can occur with infection of D. hominis or C, homnivorax

A

secondary bacterial infection

48
Q

what are the diptera?

A

winged flies

49
Q

do all diptera adult flies inflict damage by biting/while seeking blood?

A

no

50
Q

the larvae of several families of diptera are ________ during development, livinhg within the tissue of the infected host

A

pathogenic

51
Q

what are the flies that require living tissue for development?

A

obligate parasites

52
Q

what is myasis?

A

burial of larvae in tissue - is an obligatory step in the life cycle of some flies and incidental for others

53
Q

where are the tissues in which myasis can occur?

A 
cutaneous 
arterial 
intestinal 
urinary 
-
normal tissue or in preexisting wounds, some of which result from other infection
54
Q

what do the larvar of diptera use to burrow through nectrotic tissues or healthy tissues?

A

their mandibular hooks aided by proteolytic enzymes

55
Q

what stage of flies causes myasis?

A

the larval stage (maggots) of various flies

56
Q

Dermatobia hominis is the primary human ________

A

bot fly

57
Q

Cochliomyia hominivorax is the primary _________ in the New World.

A

screw worm fly

58
Q

Chrysoma bezziana is the Old World ________

A

screw worm

59
Q

Cordylobia anthropophaga is known as the ________

A

tumbu fly

60
Q

after how long do the bot fly larvae hatch?

A

5-10 weeks

61
Q

what is the hole in the skin in a bot fly?

A

an air hole for the posterior spiracles

62
Q

what are the posterior spiracles?

A

the respiratory organs - a series of external openings

63
Q

where do new world screw worms lay their eggs?

A

around the edges of wounds

64
Q

what do the larvae of screw worms invade?

A

wounds, after the eggs have been laid near the wounds

65
Q

can a large or small number of screw worm larvae infest a wound?

A

a large numebr

66
Q

what do the old world screw worms invade?

A

the larvae penetrate wounds or mucous membranes, primarily affecting areas around the eyes, mouth and nose

67
Q

what do tumbu flies cause?

A

accidental myasis

68
Q

where do tumbu flies lay eggs?

A

on contaminated soil with urine or feces

69
Q

what do emerging larvae of tumbu flies attach themselves to?

A

any host they come in contact with and penetrate the skin

70
Q

what are infestations with D. hominis (bot fly) characterized by?

A

cutaneous swellings on the body or scalp that may produce discharges and be painful

71
Q

what is different in infestations with C. homnivorax?

A

they can be more serious,as this species may travel through living tissue in the body and not stay subdermal like most of the other species of flies that cause myiasis

72
Q

what else can occur with infection of D. hominis or C, homnivorax

A

secondary bacterial infection

BSC Zoology - Parasitology (27 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions