Gabriella Langlois
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MICROSCOPES
,Oil Immersion Lens: 100x lens
- Immersion oil reduces refraction of light
- Numerical Aperture
ORGANISMAL INTERACTIONS
Symbiosis: interaction among organisms in which one organism lives
with, in, or on the body of another
Symbionts: organisms involved in symbiotic relationship
Parasitism: a symbiosis in which a symbiont benefits, while it harms the
host in some way
Target Organ: where reproduction of parasite occurs
Infectious stage: stage the parasite can enter its host
TYPES OF HOSTS
Definitive Host: host in which parasite achieves sexual maturity
Intermediate Host: host in which parasite develops to some extent but
not to sexual maturity
Paratenic/Transport Host: an intermediate host whose presence may be
required for the completion of a parasite's life cycle, but no development
of the parasite occurs
Reservoir Host: host that serves as a means of sustaining a parasite when
it is not infecting humans; typically another suitable definitive host
Accidental Host: host that harbors a parasite which it usualy does not
infect
SUBCLASS: DIGENEA
Domain: Eukarya
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Trematoda
- Subclass: Digenea
, Miracidium:
Sporocyst:
Redia:
Cercaria:
Metacercaria:
Subclass Digenea Body Plan =
- Unsegmented body: doral-ventrally flat
- Acoelomates: incomplete GI tract
- Hermaphroditic: have both M & F reproductive organs
Digenea Life Cycle =
Egg Miracidium Sporocyst Redia Cercaria MetaCercaria
=>
MICROSCOPES
,Oil Immersion Lens: 100x lens
- Immersion oil reduces refraction of light
- Numerical Aperture
ORGANISMAL INTERACTIONS
Symbiosis: interaction among organisms in which one organism lives
with, in, or on the body of another
Symbionts: organisms involved in symbiotic relationship
Parasitism: a symbiosis in which a symbiont benefits, while it harms the
host in some way
Target Organ: where reproduction of parasite occurs
Infectious stage: stage the parasite can enter its host
TYPES OF HOSTS
Definitive Host: host in which parasite achieves sexual maturity
Intermediate Host: host in which parasite develops to some extent but
not to sexual maturity
Paratenic/Transport Host: an intermediate host whose presence may be
required for the completion of a parasite's life cycle, but no development
of the parasite occurs
Reservoir Host: host that serves as a means of sustaining a parasite when
it is not infecting humans; typically another suitable definitive host
Accidental Host: host that harbors a parasite which it usualy does not
infect
SUBCLASS: DIGENEA
Domain: Eukarya
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Trematoda
- Subclass: Digenea
, Miracidium:
Sporocyst:
Redia:
Cercaria:
Metacercaria:
Subclass Digenea Body Plan =
- Unsegmented body: doral-ventrally flat
- Acoelomates: incomplete GI tract
- Hermaphroditic: have both M & F reproductive organs
Digenea Life Cycle =
Egg Miracidium Sporocyst Redia Cercaria MetaCercaria
