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Parasitology > Equine mites/lice (year 2) > Flashcards

Equine mites/lice (year 2) Flashcards

1
Q

name the main mite effecting horses

A

Chorioptes bovis (equi)

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2
Q

is Chorioptes bovis a burrowing or non-burrowing mite?

A

non-burrowing chewing louse

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3
Q

describe the morphology of Chorioptes bovis

A

rounded head
thumb print pattern
short pedicels at the end of front legs ending in cups
long setae on back legs

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4
Q

what time of year and where on the host does Chorioptes bovis effect?

A

winter disease (long coats) common on lower limbs

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5
Q

what disease does Chorioptes bovis cause?

A

chorioptic mange

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6
Q

what are the clinical signs of chorioptic mange?

A

papules, alopecia, crusty lesions

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7
Q

describe the lifecycle of Chorioptes bovis

A

6 legged larvae hatch from eggs laid on skin these feed and moult to an eight legged protonymph, tritonymph and adult

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8
Q

how long does the lifecycle of. Chorioptes bovis take?

A

3 weeks

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9
Q

what is an infection with lice known as?

A

pediculosis

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10
Q

name the two lice effecting horses

A

Bovicola equi

Haematopinus asini

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11
Q

which louse effecting horses is a sucking louse?

A

Haematopinus asini

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12
Q

describe the general morphology of lice

A

stout legs/claws
flattened appearance
small wingless insects

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13
Q

which louse effecting horses is a chewing louse?

A

Bovicola equi

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14
Q

describe the morphology of Bovicola equi

A

grey/brown
striped abdomen
head/abdomen same width

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15
Q

what are the clinical signs of Bovicola equi?

A

inflammation, irritation, pruritis

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16
Q

can lice survive off of the host?

A

no they are permanent parasites

17
Q

describe the morphology of Haematopinus asini?

A

pointed head
stylet for sucking
yellow/grey/brown
dark margins on abdomen

18
Q

describe the lifecycle of lice

A

eggs (nits) glued onto a hair hatch to nymphs, which moult three times to give rise to adults in 2-3 weeks

19
Q

where on the host are lice found?

A

base of tail and main

long coat during winter

Parasitology (9 decks)

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