Veterinary Clinical Parasitology Flashcards

1
Q

Acanthocephalans of birds

A

Polymorphus and Filicollis with arthropods as IH

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

Morphology of Strongylid L3 in horses

A

Strongyloides westeri: no sheath, very long esophagus
T. axei: short tail, not filamentous (stomach hairworm)
Cyathostominae: 8, triangular
Gyalocephalus (small strongyle): 12, rectangular
Oesophagodontus (small strongyle): 16, triangular
Posteriostomum (small strongyle): 16, roughly rectangular
Strongylus equinus: 16, poorly defined, rectangular
Triodontophorus (large strongyle): 18-20, well-defined, rectangular
Strongylus edentatus: 18-20, poorly defined, elongated
Strongylus vulgaris: 28-32, well-defined, rectangular

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

Morphology strongylid L3 larvae in ruminants

A

Trichostrongylus and Ostertagia/teladorsagia have short tails, have to exsheath to see if there are tubercles (Trichostrongylus, T. vitrinus has two)
Haemonchus and Cooperia have medium tails but Cooperia has oval bodies in the anterior end
Long tail: Nematodirus 8 intestinal cells, bunostomum small larva, Oesophagostomum 16-24 intestinal cells, and Chabertia 24-32 intestinal cells

Abomasal nematodes of ruminants by size (largest to smallest): Mecistocirrus (43 mm), Haemonchus (14-30 mm), Ostertagia/Teladorsagia (7-9), Trichostrongylus axei (7 mm)

Small intestinal nematodes of ruminants by size (largest to smallest): Nematodirus (20-25 mm), Cooperia (6-16 mm), Trichostrongylus colubriformis (6-7 mm)

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

Trematodes of dogs

A

Alaria, small intestine , Helisona 1st IH, Frogs 2nd IH, infective stage is called mesocercaria

Paragonimus, lung, Pomatiopsis 1st IH, Crayfish 2nd IH, has an abopercular bump

Nanophyetus salmincola, small intestine, Oxytrema, Salmon, transmit Neorickettsia helminthoeca

Heterobilharzia, mesenteric and hepatic portal veins, Lymnaea, no 2nd IH as cervarias penetrate through skin. Eggs hatch miracidium when in contact with water

Platynosomum (in cats), in gall bladder and bile ducts, snail (Suburbia) and 2nd IH is pill bug, lizards and amphibians are paratenic hosts. It has a fully formed miracidia when passed in feces

Cryptocotyle, in intestine, Littorina 1stIH, fish 2ndIH, egg’s undifferentiated when passed on feces

Metorchis, bile ducts and gallbladder, snail is 1IH fish is 2ndIH

Eurytrema, pancreatic ducts, snails 1stIH, arthropods 2nd IH

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

Identical to H. contortus

A

Mecistocirrus digitatus, difference is that the anus is closer to the vulva in this one

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

Similar egg to Nematodirus

A

Marshallagia marshalli but this is from the abomasum and has less pointed polars

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

Difference between D. filaria and P. rufescens

A

The former is amphidelphic and has a cephalic button and the latter is prodelphic

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

Lungworms that have more than one dorsal spine

A

Cystocaulus and Neostrongylus

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

Cestodes of horses

A

Anoplocephala perfoliata, adult has lapets and the eggs is bigger than 60 um
Anoplocephala magna
Paranoplocephala mamillana

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

Spirurids of pigs

A

Physocephalus and Ascarops

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

Eimeria species of swine

A

E. porci, E. scabra, E. spinosa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

IH of Metastrongylus? And what stage do we see in feces

A

Earthworm and embryonated egg

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

IH of M. ingens and M. hirudinaceus

A

Narceus giant millipede and beetles

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

Paratenic host of Oncicola canis

A

Armadillo

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

Eimeria species in birds and predilection sites

A

E. acervulina, duodenum
E. necatrix and E. maxima, jejunum
E. tenella, cecum
E. brunetti, rectum

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

Flagellates of birds

A

Trichomonas, upper GIT, no cyst
Spironucleus, intestines, no cyst, trophozoite has no sucking disc
Chilomastix, intestines, cyst like lemon
Giardia, intestines, cyst
Cochlosoma, intestines, no cyst, trophozoite smaller than Giardia
Histomonas, cecum and liver and no cyst

17
Q

Ascarids of birds

A

Ascaridia, intestine bigger than Heterakis
Heterakis, cecum
Subulura, cecum, embryonated when passed on feces
Porrocecum (polar plugs) and look like Toxocara
Contracecum

18
Q

Strongylids of birds

A

Trichostrongylus and Amidostomum (larger eggs) intestines and cecum
Syngamus trachea, trachea and bronchi, eggs with bipolar plugs
Cyathostoma trachea, trachea and bronchi

19
Q

Spirurids of birds

A

Tetrameres and Dispharynx in proventriculus
Serratospiculum in respiratory tract

20
Q

Trematodes of birds

A

Echinostoma in intestine
Echinoparyphium in intestine
Prosthogonimus, in oviduct

21
Q

Cestodes of birds

A

Insects are IH
Amebotaenia
Choanotaenia
Raillietina
Hymenolepis
Davainea, IH is mollusk

22
Q

Acantocephalans in birds

A

Polymorphus and Fillicollis

23
Q

Oxyurids of rodents

A

Syphacia obvelata and Aspiculuris tetraptera in mice
Syphacia muris and Aspiculuris ratti in rats

24
Q

Nematodes of Guinea pigs

A

Paraspidodera uncinata, ascarid in the cecum

25
Q

Ascarids of rats

A

Heterakis spumosa in the cecum

26
Q

Strongylids of rabbits

A

Obeliscoides cuniculi and Graphidium strigosum in the stomach

27
Q

Rhipicephalus ticks:
Rhipicephalus one host ticks
Rhipicephalus two host ticks
Rhipicephalus three host ticks

A

One host:
R. decoloratus (blue tick)
R. microplus (tropical cattle tick)
R. annulatus (cattle fever tick)
Two host tick:
R. evertsi (red-legged tick)
Three host tick:
R. sanguineus
R. appendiculatus (brown ear tick)

28
Q

Parasites of fish:
Freshwater

Marine or brackish water

Anywhere

A

Ichthyophthirius multifiliis
Oodinium
Tetrahymena
Epistylis
Ichtyobodo
Trichophyra
Lernaea (anchor worm)

Cryptocaryon irritans
Uronema
Lepeophtheirus, Caligus

Trichodina
Amyloodinium (rust or velvet disease)
Myxobolus
Henneguya ictaluri
Monogeneans
Argulus (skin and fins)
Ergasilus (gills)