Difference between revisions of "Parasites"

From Dog
Line 81: Line 81:
::''[[Roundworms|Toxocara cati]]'',  
::''[[Roundworms|Toxocara cati]]'',  
:::::''[[Heterobilharzia spp|Heterobilharzia americana]]'', ''[[Alaria spp]]'', ''[[Nanophyetus spp|Nanophyetus salmincola]]'', ''[[Metagonimus yokogawai]]''
:::::''[[Heterobilharzia spp|Heterobilharzia americana]]'', ''[[Alaria spp]]'', ''[[Nanophyetus spp|Nanophyetus salmincola]]'', ''[[Metagonimus spp|Metagonimus yokogawai]]''
:::::''[[Eurytrema procyonis]]'', ''[[Mammomonogamus ierei]]'', ''[[Parametorchius complexus]]'', ''[[Platynosomum spp|Platynosomum fastosum]]''
:::::''[[Eurytrema procyonis]]'', ''[[Mammomonogamus ierei]]'', ''[[Parametorchius complexus]]'', ''[[Platynosomum spp|Platynosomum fastosum]]''

Revision as of 21:24, 30 September 2012

The common flea tapeworm of cats, Dipylidium caninum
Trichuris spp - adult whipworms
Post-mortem specimen from a dog which died suddenly from D. immitis infection
Ctenocephalides canis - the dog flea
Adult Heterodoxus spiniger - dog biting louse
Adult head of Toxocara cati round worm
Giardia spp parasite, a common cause of diarrhoea in cats

The term parasitism may be defined as a two-species association in which one species, the parasite, lives on or in a second species, the host, for a significant period of its life and obtains nourishment from it. This is a commonly accepted working definition of parasitism and using it we can emphasize several important features of the host-parasite relationship. Parasitism always involves two species, the parasite and the host. Many of these parasitic associations produce pathological changes in hosts that may result in disease. Successful treatment and control of parasitic diseases requires not only comprehensive information about the parasite itself but also a good understanding of the nature of parasites' interactions with their hosts. The parasite is always the beneficiary and the host is always the provider in any host-parasite relationship[1].

This definition of parasitism is a general one but it tells us nothing about parasites themselves. It does not address which particular infectious organisms of domestic animals we might include in the realm of parasitology. The protozoa, arthropods and helminths are traditionally defined as parasites. However, there are members of the scientific community who designate all infectious agents of animals as parasites including viruses, protozoa, bacteria and fungi as well as the arthropods, helminths and protozoa. Within this broad definition, parasites are further divided into microparasites and macroparasites. The following subsections summarizes the common parasites of cats.


Cuterebra spp, Cochliomyia spp
Ctenocephalides felis, Ctenocephalides canis, Echidnophaga gallinacea
Pulex irritans
Ixodes holocyclus, Rhipicephalus sanguineus
Demodex spp, Eutrombicula alfreddugesi, Neotrombicula autumnalis
Otodectes spp, Cheyletiella spp
Sarcoptes spp
Heterodoxus spiniger, Trichodectes canis
Dirofilaria repens, Dracunculus insignis, Dipetalonema reconditum


Thelazia spp


Dirofilaria immitis, Dipetalonema reconditum
Babesia spp, Mycoplasma spp
Leishmania spp
Hepatozoon spp, Rickettsia spp, Bartonella spp, Ehrlichia spp


Toxocara cati, Dirofilaria immitis
Toxoplasma spp
Cuterebra spp


Dirofilaria spp, Capillaria aerophilia, Eucoleus aerophilus, Oslerus rostratus
Aelurostrongylus abstrusus, Paragonimus spp, Troglostrongylus subcrenatus


Parametorchius complexus, Platynosomum spp, Opisthorchis felineus

Reproductive tract

Brucella canis


Dioctophyme renale


Dipetalonema reconditum, Bronchostrongylus subcrenatus, Cuterebra spp
Eurytrema procyonis, Dirofilaria immitis, Mammomonogamus ierei
Parametorchius complexus, Platynosomum spp, Trichinella spiralis, Hepatozoon spp, Neospora spp, Cytauxzoon felis


Tetratrichomonas felistomae


Ollulanus tricuspis, Physaloptera spp, Aonchotheca putorii, Spirocerca lupi

Small intestine

Giardia spp, Cryptosporidium spp, Isospora spp
Toxoplasma gondii, Hammondia hammondi, Sarcocystis spp
Balantidium coli, Tritrichomonas spp
Strongyloides spp, Alaria marcianae, Ancylostoma braziliense, Ancylostoma tubaeforme
Besnoitia spp, Diphylobothrium latum, Echinococcus multilocularis
Hammondia hammondi, Mesocestoides spp, Toxascaris leonina
Toxocara cati,
Heterobilharzia americana, Alaria spp, Nanophyetus salmincola, Metagonimus yokogawai
Eurytrema procyonis, Mammomonogamus ierei, Parametorchius complexus, Platynosomum fastosum
Spirometra mansonoides, Mesocestoides spp, Dipylidium spp, Diphyllobothrium latum
Taenia taeniaeformis, Echinococcus multilocularis, Spirometra mansonoides
Alaria marcianae, Nanophyetus salmincola, Heterobilharzia americana

Large intestine

Balantidium coli
Strongyloides spp, Trichuris vulpis