PARASITE LIFE CYCLES TO KNOW

Fasciola hepatica

Indirect life cycle; found in bile duct and liver of ruminants, horse, and man; spreads through freshwater snails.

Dicrocoelium dendriticum

Indirect life cycle; found in liver and gall bladder of reptiles, birds, and mammals; involves land snails and ants.

Paramphistomum cervi

Indirect life cycle; found in the rumen of mammals, birds, and reptiles; spreads through mud snails.

Opisthorchis tenuicollis

Found in fish-eating mammals; involves snails and fish; located in liver and bile ducts.

Metagonimus yokogawai

Infects fish-eating mammals and humans; typically found in the small intestine.

Alaria spp.

Indirect life cycle; found in the small intestine of dogs, cats, and humans; spreads through water snails and frogs.

Paragonimus westermani

Indirect life cycle; lung fluke affecting dogs, cats, and humans; involves water snails and crustaceans.

Diphyllobothrium latum

Indirect life cycle; fish tapeworm found in the small intestine of fish-eating mammals.

Taenia solium

Pig tapeworm; adult form found in humans' small intestine; cysticercus develops in pig muscles.

Ascaris suum

Direct life cycle; found in the small intestine of pigs; involves hepato-pulmonary migration.

Strongyloides spp.

Affects various hosts including humans and horses; lives in the small intestine; has two forms of larvae.

Echinococcus granulosus

Indirect life cycle affecting carnivores and humans; forms hydatid cysts in the liver and lungs.

Anoplocephala spp.

Indirect life cycle involving oribatid mites; found in the intestine of horses.

Schistosoma spp.

Indirect life cycle affecting humans; located in blood vessels; spread through water snails.