Bursates

Question 1

What are bursate nematodes?

Answer 1

Nematodes whose males have a copulatory bursa. They belong to the superfamilies:

Trichostrongyloidea

Metastrongyloidea

Strongyloidea

Ancylostomatoidea

Question 2

What is the significance of the copulatory bursa in bursate nematodes?

Answer 2

helps the male nematode grasp the female during mating.

Question 3

Genus: Haemonchus (Barber pole worm)

Answer 3

Hosts: Sheep, goats (H. contortus), cattle (H. placei)
Site: Abomasum
Signs: Anemia, submandibular edema (“bottle jaw”), death
Control: Benzimidazoles, Ivermectin every 2–4 weeks

Question 4

Genus: Ostertagia (Bovine stomach worm

Answer 4

Hosts: Cattle, sheep, goats
Site: Abomasum
Signs: Diarrhea, emaciation, anorexia, mild anemia
Control: Deworming, pasture management

Question 5

Genus: Trichostrongylus

Answer 5

Hosts: Ruminants, horses, pigs
Site: Abomasum
Signs: Weakness, diarrhea, emaciation, anemia
Control: Rotational grazing, deworming, avoid wet pastures

Question 6

Genus: Dictyocaulus (Lungworm)

Answer 6

Hosts: Cattle (D. viviparus), sheep/goats (D. filaria)
Site: Bronchi and trachea
Signs: Coughing, rapid breathing
Diagnosis: Fecal exam, post-mortem

Question 7

Genus: Metastrongylus

Answer 7

Host: Pigs
Intermediate Host: Earthworm
Site: Bronchi and bronchioles
Signs: Coughing, nasal discharge, dyspnea
Control: Avoid pigs feeding on contaminated soil; deworm with Ivermectin

Question 8

Genus: Ancylostoma (Hookworm)

Answer 8

Site: Small intestine
Infection: Skin penetration or ingestion of L3
Signs: Anemia, dermatitis, bloody diarrhea
Control: Clean environment, regular deworming

Question 9

Genus: Bunostomum (Cattle hookworm)

Answer 9

Site: Small intestine
Infection: Skin or oral ingestion of L3
Signs: Weight loss, anemia, foot stamping
Control: Ivermectin and hygiene

Question 10

Genus: Syngamus (Gapeworm)

Answer 10

Hosts: Birds
Site: Trachea
Infection: Ingestion of L3 from egg or intermediate host (e.g., earthworm)
Signs: Gasping, open-mouth breathing, coughing
Control: Deworm, control intermediate hosts, hygiene

Question 11

Genus: Stephanurus (Kidney worm)

Answer 11

Host: Swine
Site: Perirenal tissues and liver
Signs: Poor growth, ascites, liver damage
Control: Clean, dry pens, prevent contact with earthworms (transport host)

Question 12

Genus: Oesophagostomum (Nodular worm

Answer 12

Hosts: Swine, cattle, goats
Site: Large intestine
Signs: Diarrhea, nodules in intestinal wall
Control: Deworming, pasture management