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Arthropod Parasites of Veterinary importance 2011 2011 VPM122 Laboratory 5 Spencer J. Greenwood PhD, DVM Dept. of Biomedical Sciences Room 3313N AVC North Annex [email protected] [email protected] Office phone # 5666002 To see the images on the web, go to: http://people.upei.ca/sgreenwood/html/protozoa.html http://people.upei.ca/sgreenwood/html/protozoa.html

Arthropod Parasites of Veterinary importance-image handout ...people.upei.ca/sgreenwood/Lab-5-Arthropod_Parasites_of_Veterinary... · Chorioptes sp.from a cow. Adult male. Note: the

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Page 1: Arthropod Parasites of Veterinary importance-image handout ...people.upei.ca/sgreenwood/Lab-5-Arthropod_Parasites_of_Veterinary... · Chorioptes sp.from a cow. Adult male. Note: the

Arthropod Parasites ofVeterinary importance

20112011VPM‐122 Laboratory 5 

Spencer J. Greenwood PhD, DVMDept. of Biomedical SciencesRoom 3313N AVC North Annex

[email protected]@upei.caOffice phone # 566‐6002

To see the images on the web, go to: http://people.upei.ca/sgreenwood/html/protozoa.htmlhttp://people.upei.ca/sgreenwood/html/protozoa.html

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VPM‐122 Laboratory 5 ImagesVPM 122 Laboratory 5 Images

• The following images of been generated for your g g g yreviewing and studying pleasure…honest!

• I have typically provided two views of the same imageimage– 1) so you can see diagnostic details– 2) a “boxed” image so you can see the relative size the ) a bo ed age so you ca see e e a e s e eparasite looks on the specified microscope objective (e.g 10X).

– Comments for improving this handout are welcomeComments for improving this handout are welcome and encouraged!

– Thanks, Spencer

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1) Mites

Demodex canis ‐ adult mite from the skin of a dog.

Demodex injai ‐ adult mite from the skin of a dog.

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Sarcoptes sabei var. canis ‐adult mite from skin of a d N ldog. Note: long unsegmented pedicle or stalk (black arrow) with sucker at end (red arrow).

Sarcoptes sabei var. canis ‐ adult female mite from skin of a dog.Note: long unsegmented pedicles (stalks) with sucker at end on legs 1 & 2. 

( )

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Otodectes cyanotis ‐ adult male mite from the ear of a dog

Otodectesmites male (top) and female (bottom) It is not unusual toear of a dog.

Note: short unsegmented pedicle with suckerat the end on each leg.

female (bottom). It is not unusual to see them under the microscope “joined together”...

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Cheyletiella sp. ‐ Note: the large palpalclaws (arrow)

Cheyletiella sp ‐ from the skin of a cat ACheyletiella sp. from the skin of a cat. A surface mite known as “Walking Dandruff”. Note: the long legs and the large palpal claws(arrow) on the ‘head’.

Page 7: Arthropod Parasites of Veterinary importance-image handout ...people.upei.ca/sgreenwood/Lab-5-Arthropod_Parasites_of_Veterinary... · Chorioptes sp.from a cow. Adult male. Note: the

Chorioptes sp. from a cow. Adult male. Note: the short unsegmented pedicles with suckers.

Page 8: Arthropod Parasites of Veterinary importance-image handout ...people.upei.ca/sgreenwood/Lab-5-Arthropod_Parasites_of_Veterinary... · Chorioptes sp.from a cow. Adult male. Note: the

Psoroptes sp. from the a sheep. Note the long legs & long segmented pedicles (see below to convince yourself).

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Knemidocoptes sp. found on a budgie. This is a burrowing mite known as the Scaly Face or Scaly Leg mite of birds. They have a Round b d l h ll bbbody similar to Sarcoptes with small stubby legs. Females have no suckers. NOT ON LAB EXAM

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2) TICKS

Ixodes sp. from a dog ‐ Engorged female. Note: anal groove in front 

Ixodes sp. from a deer ‐ Note: arrow indicates the ‘anal groove in front of anus’ that is used 

of anus. to diagnose members of this Genus. Six legged larval stage.

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Rhipicephalus sp. ‐ A. Stained specimen with a noose!, Note the hexagonal shaped basis capitulum (red arrow) and deep clefts in the fore coxae (black arrow). B. Cleared specimen showing ‐ hexagonal shaped basis capitulum

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Dermacentor sp. from a dog. Note the ‘rectangular’ basis capitulum and festoons

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3) Fleas)

Ctenocephalides felis ‐The cat flea. Pronotalcomb (red arrow) and ( )genal comb (black arrow).

Ctenocephalides felis ‐ The cat flea The mostCtenocephalides felis The cat flea. The most common flea on both cats and dogs

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4) Keds

Melophagus sp. ‐ Adult sheep ked. Note how fly‐like it looks. Often described as a wingless fly.

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5) Lice

Trichodectes sp found on a dog This is a chewing louse Note: thatTrichodectes sp. found on a dog. This is a chewing louse Note: that the head is wider than the thorax. They have sx legs attached to the thorax. The front pair of legs are obscured by this louses massive head.

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Linognathus sp. from the skin of a  Hematopinus sp. from the skin of a pig. dog. Stained specimen (red dye)..

Note: these are both sucking lice, the head is narrower than the thorax

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6) Bots

A B C

A) Gasterophilus ‐ Horse bot fly larvae (stomach of horse), ~ 1‐1.5 cm in lengthB) Hypoderma ‐ Cattle grub back of cow ~ 3cm in lengthB) Hypoderma Cattle grub, back of cow,   3cm in lengthC) Cuterebra ‐ Rodent bot fly (from the neck skin of a dog), ~ 2.5 cm in length