Index.php/Parasites

From Dog
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
File:Toxa2.jpg
Adult head of Toxocara cati round worm
File:Giar1.jpg
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.

Skin

Flies (Myiasis)
Cuterebra spp, Cochliomyia spp
Fleas
Ctenocephalides felis, Ctenocephalides canis, Echidnophaga gallinacea
Pulex irritans
Ticks
Ixodes holocyclus, Rhipicephalus sanguineus
Mites
Demodex spp, Eutrombicula alfreddugesi, Neotrombicula autumnalis
Otodectes spp, Cheyletiella spp
Sarcoptes spp
Lice
Heterodoxus spiniger, Trichodectes canis
Nematodes
Dracunculus insignis, Dipetalonema reconditum

Eye

Thelazia spp

Blood

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

Brain

Toxocara cati, Dirofilaria spp, Toxoplasma spp
Cuterebra spp

Lungs

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

Liver

Parametorchius complexus, Platynosomum spp, Opisthorchis felineus

Reproductive tract

Brucella canis

Kidney

Dioctophyme renale

Interstitium (Tissue)

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

Mouth

Tetratrichomonas felistomae

Stomach

Ollulanus tricuspis, Physaloptera spp, Aonchotheca putorii, Spirocerca lupi

Small intestine

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

Large intestine

Protozoa
Balantidium coli
Nematodes
Strongyloides spp, Trichuris vulpis

References