Exercise 28: Superfamily Filaroididea

1. Filaroids

2. Macrofilariae

3. Microfilariae

1. Common name of Superfamily Filaroidea

2. Adults are termed as:

3. Larvae are termed as:

SN: Dirofilaria immitis

CN: Heartworm of dogs

Identify. Give the SN and CN of this worm

Dirofilaria immitis

Right ventricle and pulmonary artery of dogs, foxes, and other wild carnivores

Give the OL and DH of this worm

Dirofilaria immitis

Mosquitoes

Culex, Aedes, Anopheles, Armigeres, Myzorkynchus, Taeniorhynchus

Give the IH

Dirofilaria immitis

Obtain 2mL of blood from an infected dog.

Demonstrate the circulating microfilariae using direct smear or modified Knott’s techniques

Ways to demonstrate this worm’s larvae

Dirofilaria immitis

Females are viviparous and first stage larvae (microfilaria) occur in the circulating blood

Male tail is spirally coiled

Additional information on this worm

Setaria equina

Identify. Give the SN of this worm

Occurs primarily in the peritoneal cavity of horses

May also be found in the pleural cavity, scrotum, lungs, and liver

Give the OL and DH of this worm

mosquitoes

Give the IH

Cerebrospinal nematodiasis

These worms can be found in the cerebrospinal cord in sheep, goats and horses and cause cerebrospinal nematodiasis

Seratia digitata, Setaria labiato-papillosa, and Setaria marshali cause a condition called

Seratia digitata

Setaria labiato-papillosa

Setaria marshali

Causative agent of cerebrospinal nematodiasis

Peritoneal cavity of cattle and carabaos

DH and OL Seratia digitata, Setaria labiato-papillosa, and Setaria marshali

Anterior chamber of eye of cattle, carabaos, and horses

DH and OL of immature stages of Seratia digitata, Setaria labiato-papillosa, and Setaria marshali

Parafilaria bovicola

This occurs in the subcutaneous connective tissue of catte and its IH is musca spp

Parafilaria multipapillosa

This occurs in the subcutaneous connective tissue of horses and its IH

Haematobia atripalpis

IH of Parafilaria multipapillosa

Causative agent of summer bleeding, producing haemorrhagic nodules

Wuchereria bancrofti

Identify. Give the SN

Wuchereria bancrofti

mosquitoes

Give the IH

Bancroft’s / Bancroftian filariasis or elephantiansis

This worm causes what disease?

Wuchereria bancrofti - Bancroft’s / Bancroftian filariasis or elephantiansis

Brugia - brugian filariasis / elephantiasis

*Both IH is mosquito

Two species that causes elephantiasis