SPECIES COMMON NAME LIFE CYCLE HOST DISEASE CAUSED

Tricuris trichiura Whipworm1. Ingestion of eggs from feces2. Eggs hatch and develop inside

the host’s gut HumanAscaris

lumbricoidesAscaroid

1. Ingestion of eggs/juveniles from feces

2. Eggs hatch; juvenile stage penetrate intestine to go to the hemal system

Secretes enzyme inhibitor that protect worm from digestive enzymes

Ascaris suum Ascaroid Pigs

Enterobius vermicularis

Pinworm1. Ingestion of eggs from feces2. Eggs hatch and develop inside

the host’s gut

Human;Female worm crawls in the anus at night to lay eggs > itch > spreadd

Parascaris sp.

Toxocara sp. Ascaroid Cats and dogs

Turbatrix aceti

Wuchereria sp.

Filaroids: Female viviparous;

juvenile: microfiliariae

1. Female produces eggs2. Microfilariae infects the female

and goes to its proboscis 3. Female mosquito bites the

definitive host(overtime – elephantiasis)

Intermediate hose: Culex mosquitoDefinitive host:

Human

Filariasis & Elephantiasis

Necator americanus

Hookworm

1. Eggs leave host in feces and hatch on the ground

2. Juvenile penetrates the skin of the host then to the blood to the lungs

3. Lungs to the pharynx and then swallowed to the intestine

4. Attaches to the gut wall and feeds on the blood