(16) Ruminant and Avian Tapeworms

Question 1

Answer 1

Question 2

strobila = string of proglottids

Question 3

Question 4

(Pseudophyllidea)

(Diphyllobaothrium Latum)

1. aka?
2. live where in body?
3. Hosts?
4. Life cycle?
5. path?
6. Diagnosis?
7. Treatment?

Answer 4

1. broad fish tapeworm
2. small intestine
3. human, dog, bear (fish eating mammals)
4. adult in SI → egg pass in feces → coracidium → ingested by copepod (flea) → procercoid develops → ingested by fish (pike) → larva develops to infective (plerocercoid) → mammal eats fish
5. GI upset, competes for B12
6. eggs in feces
7. praziquantel, epsiprantel

Question 5

(Pseudophyllidea)

(Spirometra Mansonoides)

1. DH?
2. IH?
3. path in host?
4. egg is small and operculate

Answer 5

1. cats; dogs (carnivores)
2. 1st - copepods (flea)

2nd - birds, reptiles, amphibians

3. asymptomatic

Question 6

1-4. What are the four types of intermediate larvae in these?

5. can there be mixes of types?

Answer 6

1. cysticercoid, cysticercus, coenurus, hydatid
2. no

Question 7

(Tapeworms of Poultry)

Question 8

(Tapeworms of Poultry)

(Davainea Proglottina)

1. DH
2. IH
3. path?
4. Diagnosis
5. Treament

Answer 8

1. pultry
2. snail or slug
3. necrosis, inflammation, etc/wasting (considered very pathogenic)
4. adults in SI, small egg w/ 6 hooks
5. keep snails away

Question 9

(Tapeworms of Poultry)

(Raillietina Echinobothridia)

1. also very pathogenic
2. IH?

Answer 9

2. ant

Question 10

(Horse Tapeworms)

(Anoplocephalids)

1. give common name + location + distribution + path

Anoplocephala magna

Anoplocephala perfoliata

Paranoplocephala mamillana

2. IH?
3. DH?
4. how pathogenic?
5. common in uppermidwest - worst in summer
6. prevention and control?
7. treatment?

Answer 10

1. large horse tapeworm (distal SI) (infrequent) (large numbers bad)

medium horse tapeworm (lower DT) (most common) (most pathogenic –> ileocecal valve)

dwarf horse tapeworm (proximal SI) (infrequent) (insignificant)

2. oratid mites
3. horses, mules, donkeys, zebra
4. not very
5. control feces
6. pyrantel/praziquantel

Question 11

(Tapeworms of Cattle)

(Moniezia expansa)

1. DH?
2. IH?

(Moniezia benedeni)

1. DH?
2. IH?

(Moniezia)

1. common
2. pathogenic?
3. treatment?

Answer 11

1. sheep
2. oribatid mite
3. cattle
4. oribatid mite
5. non (hang out of anus)
6. albendazole/fenbendazole

Question 12

(Tapeworms of Cattle)

(Thysanosoma Actinoides)

1. aka?
2. DH?
3. location in body?
4. western NA

Answer 12

1. fringed tapeworm
2. sheep, goats, wild ruminants
3. SI, bile and pancreatic ducts

Question 13

(Taeniid Tapeworms)

1. larval stage in IH is what?

Answer 13

1. cysticercus

Question 14

Question 15

(Taenid Tapeworms)

(Taenia Saginata)

1. larval stage known as what?

when in muscle called what?

2. DH?
3. IH?
4. worldwide
5. scolex with 4 - armed or unarmed rostellum?
6. humans infected by what?
7. path in humans? in cattle?
8. control?

Answer 15

1. cysticercus bovis

beef measles

2. human (the only one)
3. cattle
4. unarmed
5. under cooked beef
6. GI, none
7. don’t let humans defecate in feedlot

Question 16

(Taenid Tapeworms)

(Taenia Solium)

1. larval stage known as what?
2. cysticercus in muscle known as what?
3. DH?
4. IH?
5. worldwide
6. when humans are IH treat with what?
7. how to control problem?

Answer 16

1. cysticercus cellulosae
2. pork measles
3. human
4. swine
5. praziquantel
6. don’t poop in pig yard