Basic Introduction to Parasitology - PowerPoint PPT Presentation

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Basic Introduction to Parasitology

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A very basic introduction to parasitology. It includes the terminologies used in the parasitology, and fields of parasitology! – PowerPoint PPT presentation

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Title: Basic Introduction to Parasitology


1
INTRODUCTION TO PARASITOLOGY
2
PARASITOLOGY
  • Parasitology the branch of biology concerned with
    the phenomenon of dependence of one living
    organism
  • on another.
  • Its study of parasites, their hosts, and the
    relationship between them.

3
PARASITE
  • An organism that lives on or in its host, which
    is usually a larger organism, that provides
    physical protection and nourishment.
  • An organism that has sustained contact with
    another organism to the detriment to the host
    organism.

4
FIELDS /BRANCHES OF PARASITOLOGY
  • Medical parasitology
  • Veterinary parasitology
  • Structural parasitology
  • Quantitative parasitology
  • Parasite ecology
  • Conservation biology of parasite
  • Taxonomy and phylogenetics

5
  • PREDATOR
  • Organism that attack another living animal, not
    necessarily killing them. ( attacker)
  • PREY
  • They are the victim.

6
  • HOST
  • The organism from which a parasite obtains its
    nutrition and/or shelter.
  • Intermediate host- is used normally by a parasite
  • in the course of
    its life cycle
  • and it which it
    may multiply
  • asexually and
    but not sexually

7
  • Definitive host- is the host in which the sexual
  • reproduction of
    parasite takes
  • place.
  • Reservoir host- is an organism in which a
  • parasite that is
    pathogenic for
  • some other species,
    lives and
  • multiplies usually
    without
  • damaging its host.

8
  • SCAVENGERS
  • Devouring those dead of natural causes or taking
    the leavings of the predator.
  • SYMBIOSIS
  • Living together in more or less intimate
    association or close union of two dissimilar
    organisms
  • From the Greek symbiosis which means the state of
    living together.

9
  • DIFFERENT FORM OF SYMBIOSIS
  • Commensalism
  • - means eating at the same table
  • - association that is beneficial to one
    partner
  • and at least not disadvantageous to
    the
  • other.
  • - a relation between two kinds of
    organisms
  • in which one obtains food or other
    benefits
  • from the other without damaging it.

10
  • SPECIALIZED TYPE OF COMMENSALISM
  • Mutualism- association is beneficial to booth.
  • Parasitism- symbiotic relationship in which one
  • organism , the host is to
    some
  • degree injured thru the
    activities of
  • the other.

11
  • VECTORS
  • Hosts that transmit parasites to man.
  • BIOLOGIC VECTORS
  • those that are essential in the life cycle.
  • PHORETIC OR MECHNICAL VECTORS
  • Those that are not essential in the life cycle.

12
  • ZOONOSIS
  • Disease of animals (literally)
  • Disease of animals that are transmissible to man
  • CLASSIFICATION OF ZOONOSIS
  • Euzoonosis- Common to man and reservoir
  • host.
  • Parazoonosis- man is infrequent host and
  • incidental
  • Anthropozoonosis- infection acquired by man
  • from other
    vertebrates.

13
  • Zooanthroponosis- human infection that maybe
  • acquired by
    other vertebrates
  • Obligate parasite- cannot exist without the host
  • Facultative parasite- can be free living or
    parasitic
  • Amphizoic- free living amoeba that may invade
  • and colonize the brain and
    other
  • sites( Naegleria and
    Acanthomoeba)

14
  • Spurious- Free living parasites or organisms that
  • parasitize other hosts,
  • - they merely passed the
    intestine ,
  • - recovered in living or dead
    state from
  • he human feces.
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