1. Lecture-TAPEWORMS: Moniesiosis, ruminant tapeworm

Question 1

MONIEZIA spp. hosts and how is parasite transferred to final host?

Answer 1

FH: ruminants
IH: forage mites
2 larval stage: cysticercoid
TRANSMISSION: ingestion of forage mite with larva

Question 2

morphology: adult segments and eggs

Answer 2

adult segments: M.benedeni 0,5-4m, M.expansa 4-10m, 4 suckers, o rostrellum nor hooks, wide proglottids, 2sets of genital organs.
eggs: shape>M.expansa triangular, M.Benedeni cuBe-shaped > content: L1, thick shell, size: expansa 55x65 micrometer, benedeni 80micrometer

Question 3

life cycle : how do eggs get into external environment, how long does metacestode develop in soil mite and how long does tapeworm develop into adult in FH (prepatent period)?

Answer 3

-eggs passed in feces
-metacestode to mite 2-4 month
-prepatent period 1-2 month

Question 4

disease symptoms in young animals?

Answer 4

-m.expansa: massive infections, reduced gain weight in lambs
m.benedeni: little pathogenic

Question 5

why is infection rate of moniesiosis highest in autumn?

Answer 5

mites prevalent during time animals are in pasture

Question 6

in whom is infection particularly common and during what period ?

Answer 6

-prevalent young lamb, kids, calves > sheep more susceptible
-during 1st summer on pasture

Question 7

how long does cysticercoid live in soil mite?

Answer 7

2-4 month

Question 8

what method can be used to detect eggs in faeces and is it reliable method ?

Answer 8

-fecal flotation method
-easily detectable eggs

Question 9

in what periods should lambs be treated?

Answer 9

deworm after 1 month after grazing
-sheep treated late spring or early summer

Question 10

what are different methods of control and prevention?

Answer 10

harvest hay, reseed fields, put animals on pasture after early morning and put inside before nightfall, deworm 1 month after grazing (anti parasitic resistance)