TapeWorms Flashcards
Class of tapeworms
cestoda
order of tapeworms
Cyclophyllida
sex of tapeworms
no sexual dimorphism
life cyle of tapeworms
indirect
1 intermediate host
(except Pseudophyllidea order)
Pseudophyllidea order
Dyphyllobotrhium
English name of Diphyllobothriosis
fish tapeworm infection
causative agent of Diphyllobothriosis
Diphyllobothrium latum
hosts of Diphyllobothriosis causative agents
fish eating and mammals
life cycle of Diphyllobothriosis causative agent
indirect
intermediate hosts of Diphyllobothriosis causative agents
small crustaceans
fresh water fishes
cycle of life of Diphyllobothriosis causative agents
egg -> coaracidium (L1) -> Procercoid (L2) -> Plerocercoid (L3)
infection of Diphyllobothriosis
with fish
clinical signs of Diphyllobothriosis
animals : asymptomatic
MAN: uptake of VitB12 may lead to microcytic megaloblastic anaemia in heavily infected
diagnosis of Diphyllobothriosis
eggs (zygote inside)
Spirometrosis causative agents
plerocercoid of Spirometra app.
Spirometrosis occurence
(zipper tapeworm) dogs and cats
life cycle of Spirometrosis causative agent
indirect
intermediate host of Spirometrosis causative agent
- cyclops
- vertèbres like frogs, snakes, birds and mammals
infection of Spirometrosis causative agent
PO: with infected 2nd intermediate hosts or paratenic hosts (rodents, pigs)
old name of Spirometrosis
sparganium
what are animals infected with in Sparganosis
plerocercoids
man sparganosis causative agents
Spirometra spp
Monieziosis, stilesiosis english name
Tapeworm disease of ruminants
occurence of tapeworm disease of ruminants
mainly lambs and kids, grazing animals
causative agents of Tapeworm disease of ruminants
Monieza expensa (dominant)
M. Benedeni
Thysanieza giardi
Avitellina centripunctata
Stilesia Globipunctata
adult form of tapeworm disease of ruminants
scolex with 4 suckers
no rostellum
double set of reproductive organs and genital pore
life cycle of tapeworm disease of ruminants
indirect
intermediate hosts of tapeworm disease of ruminants
box mites
cycle of life of tapeworm disease of ruminants
eggs (6 hooked oncosphere) –> cysticercoid (L2)
Diagnosis of tapeworm disease of ruminants
faecal discharge of single proglottids or groups of segment
Epidemiology of Monenzia species
- infected mites can overwinter
- M.Expensa infection in May/June in temperate zone
- M. Benedeni in older animals
Eggs of Tape worms of ruminants
- Expensa are triangular (one oncosphere surrounded by a pear shape embryophore)
- Benedeni quadrangular egg
triangular egg containing one oncosphere surrounded by a pear shape embryophore
M. Expansa
English name of Echinococcus granulosus
the dwarf tapeworm of dogs
English name of Echinococcus multilocularis
the dwarf tapeworm of foxes
English name of Dipylidium caninum
cucumber-like tapeworm
causative agents of tapeworms of carnivores
Echinococcus granulosus s.l. Echinococcus multilocularis Dipylidium caninum
description of Tania type eggs
30-40μm, oval, inside 6-hooked oncosphere (L1)
Life cycle of Tapes worms of carnivores
indirect with 1 intermediate host
Infective stage of Tapes worms of carnivores
L2
Cate tapeworm egg name
T. Taniaformis
which is the dangerous dog tapeworm
Echinococcus granulosus
Morphology of Echinococcus granulosus
3-6mm long
3 (2-6) segments
4 suckers
Rostellum
identification of Echinococcus granulosus eggs
taenia type
dangerous fox tape worm
Echinococcus multilocularis
hosts of dangerous fox tape worm
red foxes
dogs
cats
how many eggs / segment can be found in foxes & dogs
20.000 eggs
How many eggs / cement can be found in cats
570
Morphology of Echinococcus multilocularis
2-4 mm
5 segments
Epidemiology of Echinococcus multilocularis
egg survives 2-3 months in summer
8 months in cooler season
Hosts of Dipylidium caninum
dog, cat, red foxes and rarely humans
Morphology of Dipylidium caninum
- 20-80cm
- 2 sets of reproductive organs (bilateral genital pores)
how much eggs can be found in gravid segments
200-300micrometer sized cocoons of 3-30 eggs
life cycle of Dipylidium caninum
indirect
intermediate hosts of Dipylidium caninum
fleas
infection of Dipylidium caninum
with infected intermediate hosts
can taenia type and echinococcus eggs be differentiated?
no
Which taenia type egg can be found in sheperd dogs
T. multiceps
Which taenia type egg can be found in butcher dogs
T. hydatigena, E. granulosus
Which taenia type egg can be found in hunting dogs
T. pisiformis
Personal protection taking in case of necropsy of animal infected with Echinococcus
opening of gut under water
efficacy of treatment against Echinococcus
100% against adults and immature forms
Treatment of Echinococcus
Praziquantel
Epsiprantel
Tapeworm disease of horses and donkeys causative agent
Anoplocephala perfoliata (most common)
Anoplocephala magna
Anoplocephala mamillana
Morphology of Anoplocephalosis causative agent
Scolex without rostellum
proglottids wider than long
Location of Anoplocephalosis causative agent
specimens of A. perfoliata tend to congregate at the ileocaecal junction,
Life cycle of Anoplocephalosis causative agent
- indirect
- Cysticercoid (L2) develop in moss mites (Oribatidae) within 2-4 months.
Infection of Anoplocephalosis causative agent
per os with mites having cysticercoid
Clinical signs of Anoplocephalosis
most cases none
detection of eggs of Anoplocephalosis
65-80μm
thick-shelled
rounded to quadrangular shape
inside an oncosphere
surrounded by a pyriform apparatus
Host & intermediate hosts of Davainea proglottina
- chicken, turkey, pigeon
- snails, slugs
Host & intermediate hosts of Amoebotaenia cuneata
- chicken
- earthworms
Host & intermediate hosts of Raillietina cesticillus
- chicken, turkey, phasan
- beetles, flies
Host & intermediate hosts of Raillietina echinobothrida
- chicken,turkey
- ants
Host & intermediate hosts of Raillietina tetragona
- chicken
- ants, flies
Host & intermediate hosts of Echinolepis carioca
- chicken,turkey
- dungbeetles
Adult names of Human cestodoses
- Diphyllobothrium latum,
- Dipylidium caninum,
- Hymenolepis nana,
- H. diminuta
Taenia affecting humans
T. saginata (beef tapeworm)
T. Solium (pork tapeworm)