Tapeworms Flashcards
Known as Pseudotapeworms
Order Cotyloda or Pseudophyllidea
Know as the true tapeworms
Order Eucestoda or Cyclophyllidea
egg shedding of pseudophyllidae is through
uterine pore
organ of attachment of cyclophyllidea
suckers and rostellum
structures that develop once the uterus disappers by degeneration
paruterine organs
present in the integument which is the primary organ for absorption of food
microtriches
organ of attachment of pseudophyllidea
bothria
a fully embyronated egg of cestodes cotain
oncosphere
the metameric repetition of reproductive organs
proglottidization
it is an hexacanth embryo with 3 hook pairs found at the center of a fully developed cestode egg
oncosphere
egg hatching affected by environment stimulus
Diphyllobothrium latum
this structure assumes the function of the uterus
paruterine organs
egg hatching affected by mechanical action
anoplocephala
egg hatching affected by digestive enzymes of hosts
taenia
eggs are covered with materials derived from the parenchyma
egg pouches
what is the infective larval form of tapeworms
metacestode
the first metacestode stage of pseudophyliids
procercoid
eggs are covered or protected with material derived from the uterus
egg capsule
the infective stage to the first intermediate host of cestode infection
oncosphere
occurs in the 2nd IH host of pseudophyllids, elongate, solid bodied and bears an adult scolex
plerocercoid
single evaginated scolex embedded in a small solid cyst, found in the small IH such as arthropods
cysticercoid
single scolex invaginated into itself in a large, fluid containing vesicle or bladder
cysticercus
solid bodied with hooks on the cercomer in the posterior region
procercoid
single colex evaginated and attached to the cyst by a chain of asexual proglottids digested away after ingestion by final host
strobilocercus
large, fluid containing bladder lined with a germinal epithelium producing a number of invaginated scolices
coenurus
large, fluid containing cyst with a laminated cuticular wall lined with a parenchymal inner layer
hydatid
2 genera of diphylobothridae
Diphylobothrium, Spirometra
common name of diphyllobothrium latum
broad fish tapeworm of man
Predilection site of D. latum
Small intestine
2nd IH of D. latum
trout, pike, salmon, perch
SN of 1st IH of D. latum
Diaptomus vulgaris, Cyclops strenuus
D. latum competes with this vitamin in the diet of the host
Vitamin B12
known as the zipper worm disease
Spirometrosis
the second larval stage of spirometra is specifically referred to as
sparganum
Characteristics of D. latum eggs
operculated, light brown, round ends
the largest tapeworm of man
D. latum
Characteristics of spirometra eggs
yellowish brown, asymmetric
the most common pseudophyllidean in the Philippines
Spirometra
final hosts of spirometra
carnivores
final hosts of Diphyllobothrium
man, carnivores
2nd IH of D. latum
Fish
1st Ih of D. latum
copepods
2nd Ih of spirometra
frog, reptile, mammal, bird
1st Ih of D. latum
diaptomus
1st Ih of spirometra
cyclops
uterine coil of diphyllobothrium
roseate
presence of larvae in muscles and tissues caused by plerocercoid infection
sparganosis
the disease of cyprinid and sulirid fish
ligulosis
causative agent of ligulosis
Plerocercoids of Ligula intestinalis and Digramma interrupta
Pathogenesis of Ligulosis in fish
growth retardation, parasitic castration, death
disease of cyprinid fish in cultured carp
bothriocephalosis
Bothriocephalosis is caused by what species
Bothriocephalus acheilognathi
uterus of pseudophyllidea
coiled or roseate with uterine pore
uterus of cyclophyllidea morphology
with branches, sacculste and no uterine pore
vitellaria of pseudophyllidea
scattered in segment
vitellaria of cyclophyllidea
concentrated in an area
eucestoda species mostly occur in which organ
small intestine
eggs of anoplocephalidae are covered with inner chitinous layer bearing
pyriform apparatus
Anoplocephalidae are only found in these species
ruminants, equine
IH of Anoplocephalidae
oribatid mites
3 genera of Anoplocephalidae
Anoplocephala, Paranoplocephala, Moniezia
Genera and species of Anoplocephalidae occuring particularly in ileo cecal junction
Anoplocephala perfoliata
Anoplocephala magna predilection site
small intestine, stomach
These species have a narrow scolex bearing a slit like sucker and absent lappets
Paranoplocephala mamillana
common name of moniezia expansa
double pored tapeworm of sheep and goats
known as double pored tapeworm of cattle
Moniezia benedini
species same as A. perfoliata except for absence of lappets
Anoplocephala magna