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Parasitology > lab 2 fecal id > Flashcards

lab 2 fecal id Flashcards

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1
Q

There are two different parasites present in the image. Which is which?

A

Acanthocheilonema reconditum (top)

Dirofilaria immitis (below)

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3
Q

These adult worms were taken from an eye of a horse. Which parasite is this?

What if it was from a dog or cat?

A

Thelazia lacrymalis

Thelazia californiensis

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4
Q

These parasites were taken from a horse’s perineal cavity. What parasite is it?

A

Setaria equina

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5
Q

You travel down to Georgia and while necropsing a dog you find an aneurysm in the thoracic aorta. What parasite is this?

A

Spirocerca lupi

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6
Q
  1. You find these eggs in fresh feces. What parasite do you think it is?
  2. Give Brewer’s taxa
A
  1. Spirocerca lupi
  2. Helmith/ Nematode/ Spirurids/ Spirocerca lupi
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7
Q

Which species belong to each of these eggs?

A
  • Toxocara canis* (left)
  • Spirocerca lupi* (middle)
  • Ancylostoma caninum* (right)
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8
Q
  1. You see these “see-through” eggs in a fecal float of a dog. What parasite comes to mind?
    • Cat?
  2. Give Brewer’s taxa
A
  1. Physaloptera rara (dogs and cats)
    • Physaloptera praeputialis (cats)
  2. Helmith/ Nematode/ Spirurid/ Physaloptera spp.
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9
Q

Compare and contrast the body shape, head, and tail between A. reconditum and D. immitis.

A

A. reconditium

  • body shape: curved, cresent shaped
  • head: blunt with cephalic hook
  • tail: shaped like button-hook
    • tail shapes refer to formalin-fixed mff only

D. immitis

  • body shape: straight
  • head: tapered
  • tail: straight
    • tail shape refers to formalin-fixed mff only
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10
Q

You find this parasite in the stomach near anterior end of duodenum in a dog. What parasite are you looking at?

A

Physaloptera rara

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11
Q

VOGUE FALL 2015 ALERT! The turtle neck is now in style. Which parasite are they acclaiming has been the trendsetter of this cotour look?

A
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12
Q

You find this anatomic figure on the caudal side of a parasite from a dog. What parasite comes to mind?

A

Physaloptera spp.

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13
Q
  1. You find eggs like these in a fecal float of a pig. What parasite comes to mind?
  2. Give Brewer’s taxa
A
  1. Physocephalus sp.
  2. Helmith/ Nematode/ Spirurid/ Physocephalus sp.
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14
Q

Your client has a hunting dog and asks about a nodules on the lower body. You expose the lesion to water, and like a chia-pet something grows! What Sci-Fi parastite is this?

A

Dracunculus insignis

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15
Q

Your lunatic parasitologist friend says the best part of his day is seeing barbells in the morning. You take a glance at his dangly body and remember a esophagus resembling that shape. What parasite has this characteristic?

A

Rhabditis (Pelodera) strongyloides

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16
Q

A sweet and innocent parasite is minding it’s own business on some decaying straw bedding in corner of the barn, then a lays on it and is infected with this parasite. What’s the name of this parasite?

A

Rhabditis strongyloides

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17
Q

This free-living parasite reproduces by parthogenesis. It has a distinct esophagus for rhabidib. Which one is it?

A

Strongyloides spp.

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18
Q
  1. This was found in a fecal of a horse (rare for this to show up and could be 3 different parasites)
  2. Give Brewer’s taxa
A
  1. Habronemamuscae muscae
    • Habronemamuscae microstoma
    • Draschia megastoma
  2. Helmith/ Nematode/ Spirurid/ Habronematidea
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19
Q
  1. You find this in feces of a horse (also rare)
  2. Give Brewer’s taxa
A
  1. Strongyloides spp.**​​
    • ​​Strongyloides westeri (in a horse)
  2. Helmith/ Nematode/ Rhabditid/ Strongyloides spp.
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20
Q

You see this larvae when doing a Baermann method on a dog’s feces that’s mucoid to watery and dog has bronchopneumonia. What’s the parasite?

A

Strongyloides stercoralis

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21
Q

Youd do a fecal float of fresh feces from a foal that’s had anorexia and diarrhea. What parasite comes to mind?

A
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22
Q

What characteristics set apart the Strongyloides’ genus L1?

A

Shell is thin and clear

when present in feces it contains an almost fully developed embryo (larva)

must smaller than strongyle-type eggs!

40-50 um (Strongyloides) and 80-100 um (Strongyle eggs)

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24
Q

You note one kidney in a dog has obliterated parenchyma. There is some peritoneal infection too. What parasite comes to mind?

A

Dioctophyme renale of course!

note it’s one kidney affected

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25
Q

You analyze some urine and find these eggs. What parasite instantly comes to mind?

A
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26
Q

What are these parasites?

A

Trichuris spp.

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27
What genera of parasites has these characteristic eggs?
trichurs spp.
28
How do you differentiate between these two?
Trichuris: * 70-80 um by 30-50 um * smooth shell wall * bipolar plugs divide egg into symmetrical halves * ring-like thickening at base of polar plugs Capillarid: * surface not smooth * yellow-green to brown * bilateral polar plugs * may or may not protrude * line through plugs usually divides egg into asymmetrical unequal halves
29
Brewer: \*Wipes drool that's been accumulating at the side of lips\* "Oh sweet baby Jesus, that's a pretty sweet Trichuris spp. egg." Strong: (INSERT STRONG'S RESPONSE)
STRONG: You been boozing, kemosabe? That's no Trichuris, it's a Capillarid egg.
30
What parasite is picutred?
Trichinella spiralis
31
What're A and B?
32
You find these parasites on nasal mucosa, and you also do a fecal float and see these eggs. What parasite is this?
Eucoleus boehmi
38
You endoscope a dog's anterior end of GI tract. Almost right away you see these nodules. What parasite makes these nodules?
Spirocerca lupi creates these esophageal nodules
52
What are some characteristics of adult and L1 enoplids that're worth noting?
Adults: no tail posterior body end at anus Males have 0-1 spicule L1: have stylet (onchiostyle) tooth-like spear in buccal
53
Parasite or pseudoparasite? Why?
Pseudoparasite (pollen grain) Interior structures completely fill the shell. No discernable cellular material inside.
54
Parasite or pseudoparasite?
Pseudoparasite (pollen granule)
55
Parasite or pseudoparasite?
Pseudoparasite It may be tempting to call this a cestode because of the hook-like structures within the shell. However, the irregular shape and jagged edges sugges that this is not an egg.
56
Parasites! Parasites everywhere!
Calm down, bro. This is the non-pathogenic yeast *Saccharomycopis guttulatus*, a common finding in rabbits and occasionally in dogs.
57
Identify the objects pictured here.
These are free-living mites. We can tell that they are not parasites because they lack structures on their limbs for attaching to the host (hooks, suckers, etc.) Their eggs can be misleading if found in the stool. Look for their large size, and be sure to focus up and down to look for arthropod limbs within the egg.
58
1. Identify this egg type. 2. If this is a dog what would it be?
1. Ascarid. * Helminth/ Nematode / ascarid / Toxocara sp. 2. Toxocara canis Note the round shape and thick, pitted shell. The center contains a single unsegmented cell that almost fills the entire shell.
59
This can be a feline or canine * Identify these egg types.
* Strongyle-type egg (or strongylid) * Helminth/ Nematode / Strongyle / Hooks / Ancylostoma sp. Note the ellipsoid shape and the morula-stage embryo within the shell.
60
This can be a feline or canine * Identify this egg type.
* Whip worm * Helminth/ Nematode / Enoplids / whips or whip worm / Trichuris sp. Note the smooth shell, bipolar plugs, and symmetry when a line is drawn through the plugs. Worm is in 1-cell stage when laid.
61
This can be a feline or canine * Identify the egg type.
* Isospora/Cystoisospora (Coccidian) * Protozoa/ Apicomplexan /enteric coccidia / Cystoisospora or Isospora Note the small size, smooth shell, and single-celled sporont.
62
Identify these eggs
Top: *Toxocara canis* Bottom: *Toxascaris leonina* Note how the *Toxascaris* egg has a smooth shell. Also note that the cell in the egg takes up less space than in *Toxocara.*
63
This is from a horse * Identify these eggs.
* *Parascaris equorum* round to ellipsoid thick, robust, pitted shell 90-100 micrometer diameter sticky albuminous surface
64
Which species would you find this ascarid in? Which egg is normal? Why? Which is abnormal? Why?
Equine: Parascaris equorum Left: normal egg has all morphologic features that would be on a fresh sample Right: abnormal "bald egg" from old specimens
65
Identify this egg from a pig
Ascaris suum
66
Identify this egg from a cow
Toxocara vitulorum
67
Which egg belongs to which species of Ascarid?
a) Toxocara canis b. ) Baylisascaris procyonis c. ) Toxascaris leonina
68
Here are the results of the fecal sample of your dog that ate some raccoon feces. There are 3 different parasites present, what are they?
* A.) Toxocara canis * B.) Strongyle type egg * Most likely Ancylostoma sp. (hookworm) * C.) Baylisascaris procyonis
69
Identify this egg
*Heterakis gallinarum* Note the ellipsoid shape, thick, smooth shell, and non-embryonated cell mass. Similar to *Ascaridia* eggs, but smaller.
70
Identify these eggs
Eggs *Ascaridia galli* Note their barrel shape. Larger in size than *Heterakis* eggs.
71
Identify this egg
Egg of *Oxyuris equi* Look for the elongated shape, smooth shell, and flattened edge on one side (lower left in this picture). May or may not have a mucoid plug.
72
Name the species and identify the structures pointed to by the arrows.
*Oxuris equi* Mucoid plug (top right) Flattened side (bottom right)
73
Identify the species
* *Syphacia. obvelata or Syphacia. muris* Note the characteristic banana shape. Just like other pinworms, the egg has a distinct flattened edge.
74
Identify the general class of worms that these eggs come from.
Pinworm. In this case, these are reptile pinworms.
75
What is this egg?
moniezia. spp
76
Identify this egg
* *Dictyocaulus arnfieldi* * *​*nematode-\> lungworm-\> *Dictyocaulus arnfieldi*
77
Identify this egg
* *Metastrongylus spp.* * ​nematode-\> lungworm-\> *Metastrongylus spp.*
78
Identify this species.
*Filaroides osleri* Nematode-\> lungworm (direct life cycle) Note the super thin shell and kinked tail
79
Identify this L1 larva
*Dictyocaulus viviparus* Lungworm, direct life cycle. Host: cow. Note the food granules.
80
Identify
* Protostrongylus * long tail tapers to point
81
Identify
* Dictyocaulus arnfieldi * L2 within cuticle of L1 and note the dark food granules
82
Identify
* Muellerius spp. * (have a dorsal spine)
83
Identify
* *Dictyocaulus filaria* * ​​Has a protoplasmic knob or cephalic button
84
Identify
* *Crenosoma vulpis* * *​*No kink in the tail
85
1. Identify this species. 2. Give its classifications
1. *Bunostomum* sp. * Note how the morula nearly completely fills the shell. 2. Helmith/ Nematode/ strongyloidea/ Hookworm/ *Bunostomum* sp.
86
1. What is 1? 2. what is 2? * Also name all of its classifications
1. Strongyle-type egg 2. *Nematodirus spp.* * Helmith/ Nematode/ Strongyloidea/ Trichostrongyle/ Small intestinal nematode/ *Nematodirus spp.*
87
1. What egg is this 2. Give its classification
1. *Syngamus trachea* * bipolar opercula 2. Helmith/ Nematode/ Strongyloidea/ Lung worm/ *Syngamus trachea*
88
1. What egg is this 2. Give its classifications
1. *Filaroides osleri* 2. Helmith/ Nematode/ Strongyloidea/ Lung worm/ Canine lungworm/ *Filaroides osleri*
89
1. Identify 2. Give Brewers taxon
1. *Eimeria spp.* 2. Protozoa/ apicomplexa/ coccidia/ *Eimeria spp*

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