Introduction to Diagnostic Medical Parasitology
Diphyllobothrium latum
Egg
Egg; broadly oval; yellow brown; operculated; small knob at abopercular end
Size: 70 x 45 μm
A Shell
B Operculum
C Knob
Adults can attain lengths exceeding 10 meters and possess over 3,000 proglottids, from which immature eggs are released (up to 1,000,000 eggs per day per worm) and subsequently expelled in feces.