Parasitology Final Pictures

Spirurid Egg

Trichostrongyle egg

Ascarid egg

Trichuroid egg

Lungworm larvae

Microfilariae

Dracunculoid larvae

Pyriform apparatus type egg

Taenia type egg

Dipylidium type egg

Pseudophyllidean type egg

Physaloptera species

canine and feline
small intestine or lumen of stomach
feed on blood

Physaloptera species

canine and feline
small intestine or lumen of stomach
feed on blood

Toxocara canis

canine
small intestine
can cause gastrointestinal obstruction vomiting diarrhea pot belly
adults also present in vomitus

Toxocara cati

feline
small intestine
can cause gastrointestinal obstruction vomiting diarrhea pot belly
adults also present in vomitus

Toxoscaris leonina

both canine and feline
small intestine
can cause gastrointestinal obstruction vomiting diarrhea pot belly
adults also present in vomitus

Baylisascaris procyonis

raccoon
zoonotic
neurological larval migrans

Ancylostoma caninum

canine
small intestine
hookworm
A=ALL ingestion of eggs, skin, across placenta and through mammary milk

Ancylostoma tubaeforme

feline
small intestine
hookworm
anemia
A=ALL ingestion of eggs, skin, across placenta and through mammary milk

Ancylostoma braziliense

canine and feline
small intestine
hookworm
anemia
A=ALL ingestion of eggs, skin, across placenta and through mammary milk

Uncinaria stenocephala

canine
small intestine
northern canine hookworm
anemia
A=ALL ingestion of eggs, skin, across placenta and through mammary milk

Trichuris vulpis

canine
cecum and colon
eggs passed out every 3rd day
float for 15 minutes

Trichuris campanula and serrata

feline
cecum and colon
eggs passed out every 3rd day
float for 15 minutes

Enterobius vermicularis

humans
human pinworm
does not affect dogs or cats

Dirofilaria immitis

canine, feline, ferret
I. host: female mosquito
heartworms

Dirofilaria life cycle

Eucoleus aerophilus

canine and feline
bronchi, trachea
inflammatory response

Eucoleus boehmi

canines
trachea, nasal cavity, and frontal sinuses
obstruction of nasal passages

Dioctophyma renale

canine
right kidney
canine giant kidney worm
largest parasitic nematode to affect domestic animals
wanders to peritoneal cavity

Dioctophyma renale

canine
right kidney
canine giant kidney worm
largest parasitic nematode to affect domestic animals
wanders to peritoneal cavity

HOT complex

cattle sheep goats
abomasum, small and large intestines
most common nematodes on fecal float for ruminants

Nematodirus species Marshallagia species

cattle, goats, sheep
abomasum small and large intestines

Trichuris ovis

cattle, sheep, and goats
cecum and colon
whipworms

Habronema microstoma Habroneme muscae Draschia megastoma

horses
Muscidae fly is intermediate host
stomach mucosa
causes summer sores
gastritis, colic, diarrhea

Parascaris equorum

horses
small intestine young foals
equine roundworms
infective L2 larva

Parascaris equorum

horses
small intestine young foals
equine roundworms
infective L2 larva

Strongylus vulgaris Strongylus edentaus Strongylus equinus

horses
large intestines
large strongyles and small strongyles
large are most pathogentic

Strongyloides westeri

horses
small intestine
transmammary
threadworm
only parthenogenetic females

Oxyuris equi

horses
cecum colon rectum
pinworm
cellophane tape impressions
causes inflammation and pruritis

Oxyuris equi

horses
cecum colon rectum
pinworm
cellophane tape impressions
causes inflammation and pruritis

Ascaris suum

pigs
small intestine
roundworm of pigs
largest in small intestine of pigs
causes thumps or something similar to hiccups in humans
respiratory symptoms reduced growth

Ascaris suum

pigs
small intestine
roundworm of pigs
largest in small intestine of pigs
causes thumps or something similar to hiccups in humans
respiratory symptoms reduced growth

Strongyloides ransomi

pigs
small intestine
transmammary percutaneous
diarrhea anemia

Trichuris suis

pigs
cecum and colon
anemia anorexia
whipworm of pigs

Trichinella spiralis

pigs
small intestine
RAW PORK
ZOONOTIC
not killed by freezing

Metastrongylus elongatus

pigs
I. host earthworm
bronchi or bronchioles
cough obstructions in airway

Syphacia obvelata and Syphacia muris

mice, rats, hamsters, and gerbils
cecum and rectum
pinworms
can be detected with cellophane tape test

Aspiculuris tetraptera

mice
cecum and rectum
pinworms
cannot be detected with cellophane tape test

Paraspidodera uncinata

guinea pig
cecum and colon
piperazine

Passalurus ambiguus

rabbits
cecum and colon
pinworms of rabbits
fenbendazole

Ascaridia species

love birds, cockatiels, macaws, parakeets, poultry, waterfowl
small intestine
levamisole, benzimidazoles, piperazine

Capillaria species

pheasants, peafowl, other poultry
I. host earthworm
crop upper alimentary tract

Hymenolepis nana

mice, rats, gerbils, hamsters, dogs, and humans
I. host none
small intestine
ZOONOTIC
postmortem in small intestine

Hymenolepis diminuta

mice, rats, gerbils, hamsters, dogs, and humans
I. host fleas flour beetles and other arthropods
small intestine
ZOONOTIC
postmortem in small intestine

Moniezia expansa

cattle, sheep, goats
I. host grain mites
small intestine
triangular or pyramidal in shape
pasture rotation

Moniezia benedini

cattle
I. host grain mites
small intestine
square or cuboidal
pasture rotation

Taenia saginata

humans
I. host cattle
small intestine
RAW BEEF
found in musculature of cattle
causes beef measles or measly beef
observed at necropsy

Taenia solium

human
pigs
small intestine
RAW PORK
necropsy

Dipylidium caninum

dogs and cats
I. host adult fleas
small intestine
Common name cucumber seed tapeworm
zoonotic
can be found in bedding hair feces
usually mistaken for uncooked rice

Taenia pisiformis

dogs
I. host rabbits
small intestine

Taenia hydatigena

dogs
I. host ruminants
small intestine

Taenia ovis

dogs
I. host sheep
small intestine

Taenia taeniaeformis

cats
I. host rats and mice
small intestine

Taenia taeniaeformis

cats
I. host rats and mice
small intestine

Echinococcus granulosus

dogs
I. host sheep cattle humans and other herbivores
small intestine
use an enema to diagnose
ZOONOTIC
REPORTABLE

Echinococcus multilocularis

cats
I. host rat mice voles and humans
small intestine
use enema to diagnose
ZOONOTIC
REPORTABLE

Spirometra species

dogs and cats
I. host 1st aquatic crustacean 2nd fish or frogs
small intestine
operculated
found near florida and the gulf coast of north america
ZIPPER TAPEWORM

Diphyllobothrium latum

dogs cats and humans
I. host 1st aquatic crustacean 2nd fish
small intestine
absorb vitamin B12 that they can produce terrible anemia
Broad fish tapeworm

Diphyllobothrium latum

dogs cats and humans
I. host 1st aquatic crustacean 2nd fish
small intestine
absorb vitamin B12 that they can produce terrible anemia
Broad fish tapeworm

Dicrocoelium dendriticum

goats, sheep, and cattle
I. host 1st land snail 2nd ant
bile duct
ZOONOTIC
can cause bile obstruction

Fasciola hepatica

cattle, sheep, and other ruminants
I. host 1st aquatic snail 2nd none cercariae encyst on aquatic vegetation
bile duct
necropsy
clorsulon
liver fluke
liver rot
ZOONOTIC

Fasciola hepatica

cattle, sheep, and other ruminants
I. host 1st aquatic snail 2nd none cercariae encyst on aquatic vegetation
bile duct
necropsy
clorsulon
liver fluke
liver rot
ZOONOTIC

Fascioloides magna

white-tailed deer
I. host aquatic snail, the cercariae encysts on aquatic vegetation
liver parenchyma
liver fluke of wild ruminants

Nanophyetus salmincola

dog
I. host 1st freshwater snail 2nd salmon
small intestine
Parastie: praziquantel Salmon poisoning: oxytetracycline doxycycline
causes salmon poisoning
found in pacific northwest region of north america
also causes elokomin fluke fever

Alaria species

dogs and cats
I. host 1st snail 2nd frog snake mouse
small intestine
fecal float sugar solution
other solutions distort the egg

Paragonimus kellicotti

dogs and cats
I. host 1st operculated snail 2nd crayfish
lung parenchyma
fecal float sugar solution or sputum smear
lung fluke
ZOONOTIC
chronic respiratory disease

Paragonimus kellicotti

dogs and cats
I. host 1st operculated snail 2nd crayfish
lung parenchyma
fecal float sugar solution or sputum smear
lung fluke
ZOONOTIC
chronic respiratory disease

Heterobilharzia americana

dogs
I. host freshwater snails
in mudflats of the Mississippi delta and coastal swampland of louisiana
ZOONOTIC
schistosomes

Macracanthorhynchus hirudinaceus

pigs
I. host dung beetle
small intestinal mucosa
Thorny headed worm of swine

Macracanthorhynchus hirudinaceus
(thorny headed worm of swine)

pigs
I. host dung beetle
small intestinal mucosa
Thorny headed worm of swine

Tritrichomonas foetus

bovine
prepuce of bulls and vagina, cervix and uterus of cows
sexual transmission
clinical signs is abortion

Trypanosoma cruzi

humans and occasionally canines
I. host reduviid bug
peripheral blood
direct blood smear diagnosis
hemoprotazoan swims within the blood

Trypanosoma cruzi

humans and occasionally canines
I. host reduviid bug
peripheral blood
direct blood smear diagnosis
hemoprotazoan swims within the blood

Cystoisospora species

canines, felines, and swine
small intestine
diarrhea poor growth dehydration even death

Giardia species

dogs, cats, horses, ruminants, and exotics
intestinal mucosa
ZOONOTIC

Giardia species

dogs, cats, horses, ruminants, and exotics
intestinal mucosa
ZOONOTIC

Toxoplasma gondii

feline
intestines
ZOONOTIC
especially pregnant women and fetus
dont clean litter box wear gloves when washing fruit and veggies dont garden

Toxoplasma gondii

feline
intestines
ZOONOTIC
especially pregnant women and fetus
dont clean litter box wear gloves when washing fruit and veggies dont garden

Babesia bigemina

bovine
I. host Boophilus annulatus
within the RBCs
fever icterus anorexia hemoglobinuria
diagnose with stained blood smears

Babesia bigemina

bovine
I. host Boophilus annulatus
within the RBCs
fever icterus anorexia hemoglobinuria
diagnose with stained blood smears

Cystoisospora suis

swine
small intestine
diarrhea dehydration weight loss
decoquinate to sows before and after farrowing, toltrazuril

Babesia canis

canine
I. host ticks
within the RBCs
icterus hemoglobinuria hemoglobinemia weakness
diagnose stained blood smears
death can occur rapidly

Trichomonas gallinae

pigeons doves poultry and raptors that feed on pigeons
crop
diagnose with crop washes and swabs

Plasmodium species

avians
I. host mosquito
within the RBCs
etiologic agent of avian malaria

Ichthyophthirius multifiliis

freshwater and ornamental fish
skin gills fins and eyes
typical lesions and skin scrapings
causes Icthyophthiriosis or ICH
tiny white spots

Amblyomma maculatum

larval and nymphal: ground birds
adult: cattle, sheep, horses, dogs, and humans
Gulf coast tick
produce severe bites, painful swellings, tick paralysis
intermediate host for Hepatozoon americanum

Babesia canis

canine
I. host ticks
within the RBCs
icterus hemoglobinuria hemoglobinemia weakness
diagnose stained blood smears
death can occur rapidly

Babesia canis

canine
I. host ticks
within the RBCs
icterus hemoglobinuria hemoglobinemia weakness
diagnose stained blood smears
death can occur rapidly

Cytauxzoon felis

Host: feline
Intermediate host: tick
Location: within the RBC's
Transmission: bite from the infective intermediate host
Clinical signs: fever, icetrus, anemia, dehydration, death, prognosis is poor
Diagnosis: stained blood smears
Treatment: blood transfusions
Common name: Cytauxzoon

Cytauxzoon felis

Host: feline
Intermediate host: tick
Location: within the RBC's
Transmission: bite from the infective intermediate host
Clinical signs: fever, icetrus, anemia, dehydration, death, prognosis is poor
Diagnosis: stained blood smears
Treatment: blood transfusions
Common name: Cytauxzoon