Trematodes Parasite Biology

p. westermani

Its adult stage is a Reddish brown in color and has a Coffee bean shaped, anterior rounded, tegument with spines

f. buski

its adult stage has an oval shape with no cephalic cone

e. ilocanum

its adult stage has a reddish gray color

heterophyid flukes

its adult stage is elongated, oval/pyriform in shape

f. hepatica

its adult stage is flat, broad, and leaf shaped

c. sinensis,o. felineus, o. viverrin

its adult stage is a Leaf like, transparent tegument

p. westermani

Its egg is

• Oval

• Yellowish Brown

• Thick shell

• Prominent operculum

• Thick abopercular end

• And its Unembryonated

f. buski

its egg is

• Large

• Operculated

• Unembryonated

e. ilocanum

its egg is

• Straw colored

• Operculated, ovoid

a. malayanum

its egg is

• Golden brown

• Operculated, Ovoid

heterophyid flukes

its egg is

• Light brown

• Ovoid, smooth operculum

• SYMMETRICAL miracidium at oviposition

f. hepatica

its egg is

• Large

• Ovoid, operculated

• Yellow brown

• Immature

c. sinensis, o. felineus, o. viverrin

its egg is

• yellowish brown

• Ovoid, convex operculum

• thick rim

• small abopercular bump

• ASYMMETRIC miracidium

p. westermani

its testes is 2 deeply lobed

f. buski

its testes is dendritic

e. ilocanum

its testes is 2 deeply bilobed

a. malayanum

its testes is 2 large 6-9 lobed

heterophyid flukes

its testes are posterior

f. hepatica

its testes are Branched (posterior)

c. sinensis

its testes is 2 highly branched

o. felineus

its testes is oblique, lobate

o. viverrin

its testes is deeply lobulated, close together

e. ilocanum

49-51 collar spines

a. malayanum

43-45 collar spines

heterophyid flukes

has fine, scale like spines

p. westermani

its ovary is anterior to testes, and has 6 long lobes

f. buski

its ovary is branched

e. ilocanum

its ovary is anterior to testes

a. malayanum

its ovary is small, round

heterophyid flukes

its ovary is submedian

f. hepatica

its ovary is dendritic (anterior)

f. hepatica

its uterus is short

p. westermani, e. ilocanum

its posterior end is tapered

a. malayanum

its posterior end is rounded

f. buski

it has a unbranched intestinal ceca

f. hepatica

it has a long branched ceca

s. japonicum

its adult stage its

• Male is short and stout

• Female is long and slender

s. mansoni

its adult stage its

• Male is appearing white, funnel-shaped oral sucker

• Female is cylindrical, gray due to pigment

s. haematobium

its adult stage its

• Male is flat and coiled

• Female is thin and long

s. japonicum

its egg is

• small knob-like spine

• ovoid, round, or pear-shaped, pale yellow

s. mansoni

its egg is

• Oval shaped

• has LATERAL spines

s. haematobium

its egg is

• Oval shaped

• has TERMINAL spines

s. japonicum

its testes is 1 row above ventral sucker

s. mansoni

Its testes 6–9 testicular masses (dorsal)

s. japonicum, s. haematobium, p. Westermani

Has Tegument with spines

s. mansoni

has Tegument with small thorns + tubercles

s. japonicum

its ovary is Single, pyramidal, at midline

s. mansoni

its ovary is Elongated, lobulated (anterior)

s. haematobium

its ovary is Long, stretched along anterior body

s. japonicum, s. mansoni, s. haematobium

its ceca is incomplete and bifurcated