The Heterophyes heterophyes worm, which has a genital sucker that surrounds the genital pore, has a variety of reservoir hosts including dogs, cats, and birds and a second intermediate host of freshwater:
a. snails.
b. fish.
c. crabs.
d. shrimp.
B
Adult H. heterophyes worms range in size from 1.0 to 1.7 mm in length and 0.3 to 0.4 mm wide and have a broadly rounded posterior. The adult H. heterophyes also has an additional sucker, the genital sucker, which surrounds the genital pore. H. heterophyes is found in China, Egypt, India, Iran, Israel, Japan, Korea, Sudan, Taiwan, the Philippines, Tunisia, and Turkey. Reservoir hosts include cats, dogs, and birds, and a variety of freshwater fish may serve as the second interme-diate host.
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