E2 Parasite Genus/Species List Flashcards
(90 cards)
Diphyllobothrium latum (2)
Category: Tapeworms Host(s): Human, dog, bear (fish eaters) Organ system: Small intestine Transmission: Copepod (water flea) & Pike fish Diagnosis: Egg in feces Important facts: None
Spirometra mansonoides (3)
Category: Tapeworms
Host(s): Cats & dogs (carnivores)
Organ system:
Transmission: Copepod (water flea) & snake/frog
Diagnosis: Eggs in feces
Important facts: Causes sparganosis in humans
-infects brain and eye
Davainea proglottina (1)
Category: Tapeworms
Host(s): Poultry
Organ system: Small intestine (duodenum)
Transmission: Snail or slug
Diagnosis: Eggs in feces (small w/ 6 hooks)
Important facts: None
Anoplocephala sp. (3)
Category: Tapeworms Host(s): Horse Organ system: Small & large intestine Transmission: Oribatid mites Diagnosis: Egg w/ pyriform apparatus Important facts: *No armed rostellum *Eggs have a pyriform apparatus w/ 6 hooks *Similar to Moniezia sp. in cattle & sheep
Anoplocephala perfoliata (2)
Category: Tapeworms Host(s): Horse Organ system: Small AND large intestine Transmission: Oribatid mites Diagnosis: Egg w/ pyriform apparatus Important facts: *Most COMMON horse tapeworm in the USA *Most PATHOGENIC *No armed rostellum *Eggs have a pyriform apparatus w/ 6 hooks
Moniezia sp. (4)
Category: Tapeworms Host(s): Cattle & sheep Organ system: Small intestine Transmission: Oribatid mites Diagnosis: Egg w/ pyriform apparatus Important facts: *Similar to Anoplocephala sp. in horses *No armed rostellum *Eggs have a pyriform apparatus w/ NO hooks *NOT pathogenic *Al-bendazole *20 ft long!
Moniezia benedenni (1)
Category: Tapeworms Host(s): Cattle only! Organ system: Small intestine Transmission: Oribatid mites Diagnosis: Egg w/ pyriform apparatus Important facts: *Similar to Anoplocephala sp. in horses *No armed rostellum *Eggs have a pyriform apparatus w/ NO hooks *NOT pathogenic *Al-bendazole *20 ft long!
Thysanosoma actinoides (2)
Category: Tapeworms Host(s): Sheep (goats & wild ruminants) Organ system: Small intestine, bile & pancreatic ducts Transmission: Unknown Diagnosis: Eggs rarely seen! Important facts: *"Fringed Tapeworm"!
Taenia saginata (5)
Category: Tapeworms Host(s): Humans are definitive host! Organ system: Small intestine Transmission: *Larvae in beef muscle = cysticercus Diagnosis: Larval cysts in beef Important facts: *"Beef measles"! *Humans defecating in feed bunks *Control by sanitation
Taenia solium (6)
Category: Tapeworms
Host(s): Humans are definitive host!
Organ system: Small intestine
Transmission: *Larvae in pork muscle = cysticercus cellulosae
Diagnosis:
Important facts:
*Neurocystocercosis in humans can come from people eating feces of infected people
Taeniid tapeworms (2)
Metacestodes Larval stages 1. Cysticercoid 2. Cysticercus 3. Coenurus 4. Hydatid cyst NOT coracidium
Taenia hydatigena (1)
Category: Tapeworms Host(s): Dog (carnivores) Organ system: N/A Transmission: Pigs, sheep other ruminants Diagnosis: N/A Important facts: *Cysticercus in omentum & mesenteries
Taenia ovis (1)
Category: Tapeworms Host(s): Dog (carnivores) Organ system: N/A Transmission: Sheep Diagnosis: N/A Important facts:
Taenia krabbei (1)
Category: Tapeworms Host(s): Wolf (other canids) Organ system: N/A Transmission: Deer (cervids) Diagnosis: N/A Important facts:
Taenia pisiformis (2)
Category: Tapeworms Host(s): Dog (carnivores) Organ system: N/A Transmission: Rabbits Diagnosis: N/A Important facts: *Risk for dogs that chase and eat rabbits
Echinococcus granulosus (12)
Category: Tapeworms Host(s): Dog Organ system: Small intestine Transmission: Sheep and horses Diagnosis: Taeniid eggs in feces Important facts: *Can cause disease in people! *Larval stage can cause pressure necrosis *Armed rostellum *Unilocular hydatid cysts
Echinococcus multilocularis (2)
Category: Tapeworms Host(s): Fox Organ system: N/A Transmission: Small rodents Diagnosis: N/A Important facts: *Multilocular hydatid cysts *Can cause disease in people! *Most lethal parasitic disease in people
Dipylidium caninum (4)
Category: Tapeworms Host(s): Dog & cat (plus wild relatives) Organ system: Small intestine Transmission: Fleas and biting louse Diagnosis: Segments, rare in feces Important facts: *Control = (1) Remove adult worms (2) Remove fleas *Crawling rice grains *Treatment = (1) Praziquantel & (2) Imidacloprid
Mesocestoides sp. (1)
Category: Tapeworms Host(s): Dog & cat (plus wild relatives) Organ system: Small intestine Transmission: (1) Oribatid mite (2) Amphibians, reptiles & rodents Diagnosis: Segment with parauterine organ Important facts: *TWO intermediate hosts!
Nematodes (3)
- Diecious = separate sexes
- Possess a simple nervous system
- Has an inert cuticle
- Have a mouth and anus = two openings
- Life cycle
(1) Large numbers of eggs
(2) Molting from one stage to another
(3) Host eats larvae from herbage
(4) L3 is the INFECTIVE stage
(5) L4 is inside the host
(6) L5 = juvenile adult
Ascarids (2)
*3 well-developed lips
*Successful because:
(1) Eggs can survive LONG in the environment
(2) Large numbers of eggs are produced
Do NOT live long in the host
*Eggs will NOT be present in feces!
*May involve tracheal migration
Ascaris lumbricoides (1)
Category: Roundworms Host(s): Human Organ system: N/A Transmission: N/A Diagnosis: N/A Important facts: N/A
Ascaris suum (4)
Category: Roundworms Host(s): Swine Organ system: Small intestine, stomach, bile duct & liver Transmission: (1) Direct = pigs eats shed eggs (2) Paratenic hosts: earthworms and rodents Diagnosis: Cough (thumps), egg in feces Important facts: *Mammillated egg surface *Lesions = milk spots on liver
Parascaris equorum (3)
Category: Roundworms Host(s): Horse Organ system: Small intestine Transmission: Eggs in environment Diagnosis: Eggs in feces Important facts: *Foals become sick when they ingest eggs from the environment *"Summer colds" in foals