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Dipylidium caninum

Dipylidium caninum. Zach Mess. Taxonomy. KINGDOM  Animalia PHYLUM  Platyhelminthes CLASS  Cestoda ORDER  cyclophyllidea FAMILY  hymenoleopididae GENUS  Dipylidium SPECIES  caninum. General. Tape worm of cats and dogs Common names: Cucumber Worm Double-pore Worm.

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Dipylidium caninum

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  1. Dipylidiumcaninum Zach Mess

  2. Taxonomy • KINGDOM Animalia • PHYLUM Platyhelminthes • CLASS Cestoda • ORDER cyclophyllidea • FAMILY hymenoleopididae • GENUS Dipylidium • SPECIES caninum

  3. General • Tape worm of cats and dogs • Common names: • Cucumber Worm • Double-pore Worm

  4. Background • Definitive host • Dogs • Cats • Intermediate host • Fleas • Transmission • Ingestion of infected flea • (humans and animals) • Usually happens while • grooming • Geographic Range • Anywere cats and/or dogs are present • Europe • Latin america • East asia • South aftrica • United states

  5. Background • Definitive host • Dogs • Cats • Intermediate host • Fleas • Transmission • Ingestion of infected flea (Humans and pets) • Ctenocephalidescanis (dogs) • Ctenocephalidesfelis (cats) • Usually happens while grooming

  6. Structure (adult) • Adult worm ~ 18 in. • Head Scolex • With armed rostellum • 4 rows of spikes • 4 suction discs • Segmented body (barrel shaped) • Segments called proglottids • Initially trapazoid shaped  elongate as gravid proglottis formed • Proglottids contain both male and female sex organs (hermaphroditic) • Posterior proglotids completely filled with egg packets Dipylidiidae

  7. Adult worm

  8. Double-pore Worm

  9. Life Cycle

  10. Life Cycle Breakdown • Intact gravid proglottids pass in feces • Proglottid releases egg packet containing oncospheres • Ingestion of egg pack by flea larva • Oncopherehatces in larva, passes through intestinal wall and developes into cysticercoid in body cavity • Larva mature into adult flea (with infective cysticercoid) • Ingestion of infected flea by cat, dog, or human • Digestion of flea releasing cysticercoid • Cysticercoiddevelopes into adult worm in small intestine and attaches to intestivnal wall • Eventually developes gravid proglottids which are passed in feces

  11. Clinical Signs • Most cases are asymptomatic • Including cats/dogs • Severe infections can exhibit: • Abdominal pain • Diarrhea • Itchy anus • Urticaria • Red rash / welts • Extremely itchy • Caused by body’s allergic reaction to worm antibodies

  12. Diagnosis • Observe gravid proglottids in stool, or near anus • White • Shaped like cucumber seed\ • Usually intact • Observe ova in fecal smear

  13. Treatment • Praziquantil • Very effective • Tolerated well in both pets and humans • Humans = oral • Pets = injection • Can dissolve worm so it may not be seen in stool

  14. Control • Vector control! • Control fleas on pet and in pets environment • May take up to a month to get rid of all fleas • Pet may need more than one treatment • Teach children to wash hands after playing with pets • Dispose of pet waste properly

  15. Work Cited • http://cookislands.bishopmuseum.org/species.asp?id=14558 • http://www.stanford.edu/class/humbio103/ParaSites2006/Dipylidiasis/index.htm • http://cal.vet.upenn.edu/projects/parasit06/website/lab6new2009.htm • http://www.rightdiagnosis.com/d/dipylidium_caninum_infection/symptoms.htm • http://www.vetmed.vt.edu/education/curriculum/vm8054/labs/lab14/cases/flea%20dermatitis/dermatitisdiscuss.htm • http://unboundstate.blogspot.com/2011/05/funny-dog-pictures.html • http://www.medicalook.com/Skin_diseases/Urticaria.html • http://www.hillsvet.com/pdf/en-us/tapewormsDipylidiumCaninum_en.pdf • http://casereports.bmj.com/content/2011/bcr.07.2011.4510.abstract

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