Bursate Nematodes

Ostertagia spp.

“Roundworm of Cattle”

Where: adults in abomasum, larvae in gastric glands

Signs: increased pH, D, wt loss, & death

Haemonchus contortus

“Barber Pole Worm”

Location: suck blood from abomasum

Signs: severe anemia, bottle jaw, & death

Trichostrongylus axis

“Stomach Hairworm”

Host: ruminants, swine, equines, & humans,

Signs: nodular lesions in the stomach, anorexia, wt loss, D, weakness

Hyostrongylus rubidus

“Red Stomach Worm of Swine”

Host: outdoor swine

Signs: ulcerative gastritis, melena, wt loss, & death in lactating sows

Dictyocaulus spp.

“Ruminant Lung Worms”

Host: first grazing calves ruminants

Signs: parasitic bronchitis, bovine dictyocaulus, husk, & hoose

Dictycaulus arnfieldi

“Horse Lungworm”

Host: donkey (preferred), horse, mules

Where: bronchi & bronchioles

Clinical Signs: obstruction

Nematodirus sp.

Host: first grazing lambs, ruminants

Where: SI

Signs: profuse D, rapid dehydration, & death

Ollulanus tricuspis

“Feline Trichostrongyle”

Live in stomach causing chronic vomiting, identified in vomit, females are larviparous

Oesophagostomum spp.

“Nodular Worm of Pigs”

Host: swine, ruminants

Where: cecum, colon

Signs: nodules, obstruction, GI upset

Stephanurus dentatus

“Swine Kidney Worm”

Transmission: ingestion, earthworms, skin penetration

Location: renal fat, ureters

Signs: wt loss, poor appetite, ascites, death

Anclyostoma spp.

“Canine & Feline Hookworms’

Penetrate skin, ingestion, or vertical, causing anemia & melena

Uncinaria stenocephala

“Northern Canine Hookworm”

Cutting plates on mouth, causing protein leak & diarrhea

Bunostomum spp.

Ruminant Hookworm

Globocephalus spp.

Swine Hookworm

Metastrongylus spp.

“Swine Lungworm”

Earthworm intermediate host

Muellerius sp. & Protostrongylus spp.

“Lungworm of Sheep & Goats”

Intermediate host is mollusk, ingesting while grazing

Oslerus (FilaroidesI) spp.

“Canine Lungworm”

Direct lifecycle, L1 is immediately infective

O. hirthi - coprophagy

O. oserli - vertical via grooming

Aelurostrongylus abstrusus

“Feline Lungworm”

Mollusk or paratenic host is ingested by cat, only respiratory problems in immunocompromised cats