Microslides (identify) - exam

finished - from microslide document

this is?

Fasciola hepatica

this is?

Fasciola hepatica

this is?

Dicrocoelium dendriticum

identify the brown ones mainly.

Dicrocoelium dendriticum

this is?

Redia

this is? (10x)

Cercaria

this is?

Moniezia Expansa

this is?

Dipylidium Caninum

this is?

taenia hydatigenea

this is? (20x)

Ascaridia galli

this is?

Heterakis gallinae

this is? (20x)

also seen:

syngamus trachea

this is?

Syngamus trachea

this is?

Nematodirus spp.

this is?

Cysticercus bovis (taenia saginata)

and:

seen at 4x

Chabertia ovina

upper: oral capsule with fine teeth on the edge.

lower: female tail?, male tail has a long spine sticking out..

this is? (20x)

Trichocephalus leporis, now classified as “trichuris leporis”

found in hares/rabbits.

M (60-80 um), lemon shaped, 2 thin shells, prominent plugs at both ends, unembryonated, reddish/brown.

Large intestine.

Infectious: Egg with L1 larvae.

this is?

Trichinella spiralis

toxocara canis

M, subspherical, 3 thick shells, unembryonated - 1 blastomere, dark brown color.

SI, nematode.

this is?

Metastrongylus elongatus Female

identify

M. Elongatus Male

identify

Dictyocaulus arnfieldi

Short bursa, 2 spicules in male, while female is short, slightly bent tail end.

In bronchi, bronchioles. Horse.

identify

Passalurus ambiguus

? (4X)

Dermanyssus gallinae

stages: hemimetabolic, egg → larva → protonymph → deutonymph → adult

Type: temporary, non-specific

FH: primarily domestic chickens, turkey, geese, pigeon, horse, dog, cat, human

Adults: oval shaped body, gray/yellow/brown, after sucking - red/ruby color, long mouthparts, stinging-sucking type, chelicerae long in shape of knife blade, dorsal plate covers almost entire dorsal side of body, long legs, covered with hair, ending with pair of claws + suction cup.

?

Macracanthorhynchus hirudinaceus

• indirect

• DH: pigs, wild game

• adults - cylindrical body

Eggs: M/L, oval, 3 thick shells, embryonated (acanthor), brownish.

Small intestine.

identify

Haematopinus eurysternus

• hemimetabolic (egg, 3 nymphal stages, adult)

• type: permanent, specific

• DH: cattle

Adult: wingless body, dorso-ventrally flattened, divided into head, thorax and abdomen, 3 pair of limbs, one claw at the end of limbs, sucking mouthparts, head narrower than abdomen, antennae composed of five segments, no eyes.

All development stages (except egg) can suck blood.

Identify

Ixodes ricinus (ornate sheep tick) - fam. Ixodidae, classified as hard ticks.

• scutum (hard shield) on its dorsal surface, haller`s organ located on its first pair of legs, helping detect CO2 and heat from host. Stigmata are found behind last pair of legs → trachea.

• mouthparts are: gnathosoma.

• grooves, genital pores, anus behind pores, adults and nymphs have 4 pairs of legs, while larvae have 3 pairs.

this is?

Ctenocephalides canis

Holometabolous (egg, 3 larval stages, pupa, adult)

Temporary, non-specifc.

DH: car, human

Adults: wingless, head, thorax, abdomen - all body segments end in plates that cover adjacent segments in a roof like manner. Mouthparts - stinging-sucking, head with generic crest.

Only adults can suck blood.

identify

Psoroptes equi

• Hemimetabolic (egg, larva, protonymph, deutonymph, adult)

• permanent, specific

• DH: horse

Adult: oval body, 4 pairs of long limbs with funnel-shaped suckers on three-segmented pedicels, stinging mouthparts, sickle-shaped, abdominal tubercles (female).

this is?

Mesocestoides lineatus - cyclophyllidae, cestode.

• 4 distinct suckers, lacks hocks on rostelleum, single set of genital organs, parauterine organ (eggs mature here), reproductive organ is in middle of the proglottid.

this is? (10x)

Metagonimus yokoqawai

Indirect - DH (dog, cat, foz, pig, birds, man), IH: 1st: water snails, 2. Cyprinid fish.

Adults: flattened, oval

this is?

Dermanysus gallinae

this is? (10x)

Psoroptes cuniculi

this is?

Linognathus vituli

Hemimetabolic (egg, 3 nymphal stages, adult)

DH: cattle

Adults: wingless body, head, thorax and abdomen, 3 pairs of limbs, one claw at the end, sucking mouthparts, head narrower than abdomen, antennae of 5 segments.

Ancylostoma caninum

• 1: male

• 2: female

identify

oxyuris equi

identify

Acantocephalus lucii

identify

M. carpaticus

identify in horse

Parascaris equi

identify

Sarcocystis spp.

identify

Dirofilaria repens - microfilarie

identify (10x)

Sarcoptes scabei

identify

Cryptosporidium spp.

identify

babesia

identify

Trypanosoma equiperdum

identify (10x)

Otodectes cynotis

identify

Gonoides dissimilis

this is?

Dictyocaulus arnfieldi (lung parasite)

?

Cryptosporidium

?

Trichinella spiralis

?

sarcocystis sp.

?

Babesia

• small on left

• large on right

?

Dicrophilaria repens - microphilaria

?

Trichinella spiralis

?

large babesia - B. canis