Helminth Parasites
NEMATODES
(Roundworm)
|
Name
|
Synonyms
|
Host
|
Site
|
Size
|
|
Haemonchus species
|
Wire worm, Barber’s
pole worm, Red stomach worm
|
Ruminants
|
Abomasum
|
1-3 cm
|
|
Ostertagia species
|
|
Ruminants
|
Abomasum
|
1 cm
|
|
Trichostrongylus
|
Stomach hair worm
|
Ruminants, horse, pig,
fowl
|
Small intestine
Except T. axei (SI and also in abomasum) and T. tenuis (SI and also in caeca of
fowl)
|
5-10 mm
|
|
Cooperia species
|
|
Ruminants
|
Small intestine
|
1 cm
|
|
Nematodirus species
|
|
Ruminants
|
Small intestine
|
1-2 cm
|
|
Ancylostoma species
|
Hookworm, Blood feeder,
Haemophagus
|
Dog, cat, man
|
Small intestine
|
1-2 cm
|
|
Bunostomum species
|
|
Ruminants
|
Small intestine
|
1-2 cm
|
|
Strongylus species
|
|
Equines (Horses and
Donkey)
|
Caecum & colon
|
1.5-5 cm
|
|
Chabertia species
|
|
Ruminants
|
Colon
|
1.5-2 cm
|
|
Oesophagostomum species
|
|
Ruminants, pig
|
Caecum, colon
|
1-2 cm
|
|
Trichuris species
|
Whip worm
|
Ruminants, pig, dog
|
Caecum
|
4-6 cm
|
|
Ascaris
lumbricoides
|
Giant roundworm, Human roundworm
|
Human
|
Small intestine
|
up to 10 cm
|
|
Neoascaris
vitulorum
|
|
Cattle, Buffalo
|
Small intestine
|
up to 30 cm
|
|
Ascaridia galli
|
Chicken roundworm
|
Poultry
|
Small intestine
|
up to 12 cm
|
|
Ascaris suum
|
Pig roundworm
|
Pig
|
Small intestine
|
up to 40 cm
|
|
Capillaria species
|
Hairworms
|
Poultry
|
Crop, esophagus, small
intestine, large intestine
|
3 cm
|
|
Heterakis species
|
Caecal worm
|
Poultry
|
Caecum
|
up to 1.5 cm
|
|
Oxyuris equi
|
Horse pinworm
|
Horse and Donkey
|
Large intestine
|
up to 10 cm
|
|
Parascaris equorum
|
Horse roundworm
|
Horses and Donkey
|
Small intestine
|
up to 40 cm
|
|
Spirocera lupi
|
Esophageal worm
|
Dogs
|
Esophagus and stomach
|
4-7 cm
|
|
Toxascaris leonine
|
|
Dogs, Cats
|
Small intestine
|
5-10 cm
|
|
Toxocara canis
|
Dog roundworm
|
Dogs
|
Small intestine
|
up to 10 cm
|
|
Toxocara cati
|
Feline roundworm
|
Cats
|
Small intestine
|
up to 10 cm
|
|
Dictyocaulus species
|
Lung worm
|
Ruminants, Horses
|
Trachea, bronchi, bronchioles
|
8 cm
|
|
Metastrongylus species
|
Pig lungworm
|
Pigs
|
Trachea, bronchi,
bronchioles
|
3-6 cm
|
|
Syngamus trachea
|
Gapeworm
|
Poultry
|
Trachea, bronchi
|
0.5-2 cm
|
|
Capillaria species
|
Hair worms
|
Dogs, Cats
|
Bladder, Lungs,
Stomach, Liver
|
3 cm
|
|
Dioctophyma renale
|
Kidney worm
|
Dogs
|
Kidney
|
20-40 cm
|
|
Dirofilaria species
|
Heart worm
|
Dogs, Cats
|
Pulmonary artery
|
20-30 cm
|
|
Oxyspirura species
|
Fowl eye worm
|
Poultry
|
Eye
|
|
|
Trichinella species
|
|
Pigs, Dogs, Cats
|
Muscles, small
intestine
|
1.4-1.6 mm
|
|
Thelazia
species
|
Eye worm
|
Mammals including human, Birds
|
Eyelids, lacrimal ducts and glands,
third eyelid
|
Up to 20 mm
|
TREMATODES
(Flatworm)
|
Name
|
Synonyms
|
Final Host
|
Intermediate Host
|
Site
|
Size
|
|
Alaria species
|
|
Dogs and cats
|
Snail
|
Small intestine
|
0.5-61.5 mm
|
|
Dicrocoelium species
|
Lancet liver fluke
flukes
|
Ruminants
|
First: Snail
Second: Ant
|
Bile ducts and gall
bladder
|
6-10 mm
|
|
Fasciola hepatica
|
Common liver fluke
|
Ruminants (Also in pig,
horse, man)
|
Snail (Lymnea)
|
Biliary ducts, gall
bladder, liver
|
30 mm ×13 mm
|
|
Fasciola gigantica
|
Tropical liver fluke
|
Ruminants (Also in pig,
horse, man)
|
Snail (Lymnea)
|
Biliary ducts, gall
bladder, liver
|
75 mm×12 mm
|
|
Fascioloides magna
|
Giant liver fluke
|
Ruminants
|
Snail (Lymnea)
|
Liver
|
4-10 cm×2-3.5 cm
|
|
Paramphistomum species
|
Stomach or rumen flukes
|
Ruminants
|
Snail (Planorbis)
|
Stomach (Rumen), small
intestine
|
1 cm
|
|
Schistosoma species
|
Blood flukes
|
Ruminants, cats, horses
|
Snail
|
Blood vessels
|
0.7-2 cm
|
|
Prosthogonimus species
|
Oviduct flukes
|
Poultry
|
Snail
|
Oviduct, Bursa of
Fabricius
|
0.75-1.2 cm
|
CESTODES
(Tapeworm)
|
Name
|
Synonyms
|
Final Host
|
Intermediate Host
|
Site
|
Size
|
|
Anaplocephala species
|
|
Horses and donkeys
|
Oribatid mites
|
Small and large
intestine
|
80 cm
|
|
Taenia saginata (Cysticercus bovis)
|
Beef measles
|
Human (Small intestine)
|
Cattle and Buffalo
|
Muscles
|
5-15 meter
|
|
Taenia solium (Cysticercus cellulosae) - cause Neurocysticercosis
in human
|
Pork tapeworm, Pork
measles
|
Human (Small intestine)
|
Pigs, humans
|
Muscles
|
5-15 meter
|
|
Taenia ovis (Cysticercus ovis)
|
Sheep measles
|
Dogs (Small intestine)
|
Sheep, Goats
|
Heart and muscles
|
5 meter
|
|
Taenia hydatigena (Cysticercus tenuicollis)
|
False hydatid worm
|
Dogs (Small intestine)
|
Sheep, Goats, Pigs,
Horse and Donkeys
|
Abdominal organs
|
5 meter
|
|
Taenia
multiceps (Coenurus cerebralis)- caused disease called Gid/Staggers
|
|
Dogs
(Small intestine)
|
Sheep, Goat, Cattle
|
Brain, Spinal cord
|
1 meter
|
|
Davainea proglottina
|
Minute tapeworm
|
Poultry
|
Insects (Such as Ants)
|
Small intestine
|
1-4 mm
|
|
Dipyllidium caninum
|
Flea tapeworm
|
Dogs and Cats
|
Fleas
|
Small intestine
|
10-30 cm
|
|
Echinococcus granulosus- cause Hydatidosis
|
Hydatid worm
|
Dogs (Small intestine)
|
Ruminants, Pigs,
Horses, Donkey
|
Liver and lungs
|
3-6 mm
|
|
Echinococcus multilocularis
|
Fox tapeworm
|
Dogs and Cats
|
Rodents
|
Small intestine
|
3-6 mm
|
|
Moniezia species
|
Sheep tapeworm
|
Ruminants
|
Oribatid mites
|
Small intestine
|
6 meter
|
|
Raillietina species
|
|
Poultry
|
Insects (Such as Ants)
|
Small intestine
|
25 cm
|
