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Parasitology > Nuisance and Biting Flies > Flashcards

Nuisance and Biting Flies Flashcards

1
Q

What genera are contained within the muscidae family?

A

Non-biting nuisance flies and blod sucking biting flies.

Musca - biting
Hydrotaea Irritans (head fly)
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2
Q

What are the species of Musca of veterinary importance?

A

M.domestica (house fly) and M. autumnalis (face fly)

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3
Q

What is their general appearance?

A

7.5mm long - standard fly
Grey thorax with longitudinal stripes
Yellow abdomen with a single yellow stripe

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4
Q

Where are the eggs lain?

A

In rotting manure

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5
Q

What is “fly wory”?

A

Flies irritating animals and distracting themfrom eating leading to production losses.

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6
Q

Outline the principles of their control.

A
  1. Source reduction - have good sanitation and compost dung.

2. Control flies on the host

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7
Q

How does composting dung help with control?

A

High temperatures within the dung heap kill developmental stages of the flies and the outside can be sprayed with insecticide to kill the ones on the surface.

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8
Q

How does the Life cylce and recognition of H. irritans differ to that of the Musca spp.?

A

Olive green abdomen and they lay eggs in decaying faeces, faeces or carrion.

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9
Q

How many generations are produced per year?

A

One

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10
Q

What can they cause in sheep?

A

“broken head” leading to secondary bacterial infections and blowfly strike

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11
Q

Why might stable flies(Stomoxys Calcitrans) be hard to control?

A

They only land on the host to bite and spend the rest of their time elsewhere.

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12
Q

What do they look like?

A

Similar size to house fly
Proboscis (as they are biting)
Grey thorax with longitudinal grey stripes
Grey abdomen with black spots

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13
Q

Where are eggs lain?

A

Rotting hay or straw

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14
Q

Are horn lies easier to control than the above?

A

Yes they are resident parasites.

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15
Q

Where are eggs lain?

A

Fresh cow dung

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16
Q

How are horse flies identifide?

A

They are large and have dical cell wing venation.

17
Q

Where are eggs lain?

A

Leaves overhanging water

18
Q

How are Simuliidae flies recognised?

A

They are small with a humbacked appearance. They also have short antennae and clear wings.

19
Q

Where are eggs lain?

A

PLants or stones under flowing water.

20
Q

How would a tsetse fly be identified?

A

Butchers-cleaver wing venation

21
Q

Where are eggs lain?

A

LARVAE are lain at the base of shrubs.

22
Q

What do they transmit?

A

Trypanosomes e.g. sleeping sickness.

23
Q

What are the current steps of control?

A

Aerial or ground spraying of insecticides
Baited traps
Release of sterile males

24
Q

How would a culicoides midge be identified?

A

They are small black midges with a mottled wing appearance and a humpback.

25
Q

Where are eggs lain?

A

On plants near water.

26
Q

Where are eggs lain in mosqiuto species?

A

On water

27
Q

What do sandflies transmit?

A

Leishmania

28
Q

Where are eggs lain?

A

In the ground

29
Q

How are they controlled?

A

Similar to mosquitoes - spraying and prophylaxis e.g. insect meshes.

30
Q

Recogition of foest flies?

A

Reddish-brown with yellow spots on hroax and abdomen.

Reduced wings with venation near the cranial margin

31
Q

Where are eggs lain?

A

LARVAE are deposited in soil or damp humus.

32
Q

What is a sheep ked?

A

A medium sized hairy, wingless fly.

33
Q

How is the life cycle different to the parasites discussed above?

A

It is spent on the host.

34
Q

What are the problems associated with ked infestation?

A

Could cause aneamia
Can damage wool; through self inflicted damage and staining with ked faeces.
It is an intermediate host for a non-pathogenic trypanosoma sp.

Parasitology (8 decks)

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