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Parasitology.

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Presentation on theme: "Parasitology."— Presentation transcript:

1 Parasitology

2 Parasite Terms Parasite Ectoparasite Endoparasite Periodic
Permanent parasite Obligate Facultative parasite Pseudoparasite

3 Parasite/Host relations
Symbiosis Mutualism    Parasitism Host Final/Definitive host Intermediate host Transport/Paratenic host

4 Reproduction Life Cycles Egg/Ova Cyst Larva Hermaphroditic Monecious
Direct life cycle Indirect life cycle Egg/Ova Cyst   Larva   Hermaphroditic Monecious Dioecious   Oviparous Ovoviviparous   Viviparous

5 Transmission Directly eating an infective larva or egg.
Eating the intermediate host.   The parasite actively penetrates the principal host. Becoming infected by means of the intermediate host. Eating the paratenic host. The parasite may be maternally transmitted

6 Fecal Examination Techniques
Direct Smears Centrifugation Passive Fecal Flotation (Fecalyzer) Gross examination

7 Nematodes (roundworms)
Ancylostoma (Hookworm) Host  Life Cycle Symptoms

8 Nematodes (roundworms)
Toxocara (T. cati, T.canis) Host Life cycle Symptoms

9 Nematodes (roundworms)
Dirofilaria imitis (Heartworm) Host Life cycle Symptoms

10 Nematodes (roundworms)
Trichuris (Whipworm) Hosts Life Cycle Symptoms

11 Nematodes (roundworms)
Large Strongyles (Strongylus Vulgaris, S. Edentatus, S. Equinus) Host Life Cycle Symptoms

12 Cestodes (tapeworms) Cestodes Host Life Cycle Symptoms

13 Trematodes (Flukes) Trematodes Host Life Cycle Symptoms

14 Protozoan Giardia Host Life Cycle Symptoms

15 External Parasites Fleas Host Life Cycle Symptoms
They are vectors of several diseases including Bubonic plague, intermediate host for tapeworms, allergies, and typhus. Host Life Cycle Symptoms

16 External Parasites Lice Host Life Cycle Symptoms

17 External Parasites Mites Demodex Sarcoptes scabei (mange) Host
Life Cycle Symptoms Sarcoptes scabei (mange) Life cycle Zoonotic

18 External Parasites Otodectes (ear mites) Host Life Cycle Symptoms


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