Parasites: Difference between revisions

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* Eukaryotic single- or multi-cellular organisms
* Eukaryotic single- or multi-cellular organisms that benefit from a relationship with a host organism, which is harmed in the process
** Compare to mutualism or commensalism

* Includes [[protozoa]], [[helminths]], and [[ectoparasites]]
== Single-celled (protozoa) ==
* '''Amoebae''': pseudopodia
** Obligate parasites
*** Non-pathogenic
**** ''[[Entamoeba coli]]'', ''[[Entamoeba dispar]]'', ''[[Entamoeba hartmanii]]'', and ''[[Entamoeba polecki]]''
**** ''[[Endolimax nana]]''
**** ''[[Iodamoeba buetschlii]]''
*** Pathogenic
**** ''[[Entamoeba histolytica]]''
**** ''[[Blastocystis hominis]]'' (maybe)
** Facultative free-living parasites
*** ''[[Naegleria fowleri]]'': causes [[primary amoebic meningoencephalitis]]
*** ''[[Balamuthia mandrillaris]]'': causes [[granulomatous amoebic encephalitis]]
*** [[Acanthamoeba species]]: cause [[granulomatous amoebic encephalitis]] and [[amoebic keratitis]]
* '''Flagellates''': regular flagella or kinetoplastic flagella
** Non-kinetoplastic flagellates
*** Pathogenic
**** Intestinal: ''[[Giardia lamblia]]'' and ''[[Dientamoeba fragilis]]''
**** Genitourinary: ''[[Trichomonas vaginalis]]''
*** Non-pathogenic
**** Intestinal: ''[[Chilomastix mesnili]]'', ''[[Pentatrichomonas hominis]]''
**** Oral: ''[[Trichomonas tenax]]''
** Kinetoplastid flagellates: flagellated protozoa with DNA inside large mitochondria at one end
*** [[Trypanosoma species]]
**** ''[[Trypanosoma cruzi]]'': causes [[American trypanosomiasis]]
**** ''[[Trypanosoma brucei]]'': causes [[human African trypanosomiasis]]
***** ''[[Trypanosoma brucei]]'' subsp. ''gambiense'': causes [[West African trypanosomiasis]]
***** ''[[Trypanosoma brucei]]'' subsp. ''rhodesiense'': causes [[East African trypanosomiasis]]
***** Other subspecies have case reports of causing human disease
*** [[Leishmania species]]
**** Old World, visceralizing: ''L. infantum'', ''L. donovani'' (in India)
**** Old World, tegumentary: ''L. infantum'', ''L. donovani'' (Sri Lanka), ''L. major'', ''L. tropica''
**** New World, visceralizing: ''L. chagasi'' (genetically identical to ''L. infantum'')
**** New World, tegumentary:
***** Viannia group (should be treated systemically): ''L. braziliensis'', ''L. panamensis'', ''L. guyanensis''
***** Leishmania group (may need only local treatment): ''L. mexicana''
* '''Apicomplexa''': gliding, sexual reproduction
** Hemosporidia
*** [[Plasmodium species]]
*** [[Babesia species]]
** Coccidia (not a microbiologically-sound category)
*** Blood and tissue
**** ''[[Toxoplasma gondii]]''
**** [[Sarcocystis species]]
*** Gut
**** [[Cryptosporidium species]]
**** ''[[Cyclospora cayetanensis]]''
**** [[Cystoisopora species]]
**** [[Sarcocystis species]]
* '''Ciliates''': cilia
** ''[[Balantidium coli]]''

== Multicellular (helminths) ==
* '''Nematodes''' (roundworms)
** Filarial/filariasis
*** [[Lymphatic filariasis]] (elephantiasis)
**** ''[[Wuchereria bancrofti]]''
**** ''[[Brugia malayi]]''
**** ''[[Brugia timori]]''
*** Subsutaneous/tissue
**** ''[[Onchocerca volvulus]]''
**** ''[[Loa loa]]''
*** Serous
**** ''[[Mansonella perstans]]''
**** ''[[Mansonella ozzardi]]''
** Non-filarial
*** Soil-transmitted
**** ''[[Ascaris lumbricoides]]'' (great roundworm)
**** ''[[Trichuris trichiura]]'' (whipworm)
**** Hookworm
***** ''[[Ancylostoma duodenale]]'' (Old World hookworm)
***** ''[[Necator americanus]]'' (New World hookworm)
**** ''[[Strongyloides stercoralis]]'' (threadworm)
*** Non-soil-transmitted
**** ''[[Enterobius vermicularis]]'' (pinworm)
**** ''[[Trichinella spiralis]]''
**** ''[[Balisascaris procyonis]]''
**** ''[[Dracunculus medinensis]]'' (Guinea worm)
**** ''[[Angiostrongylus cantonensis]]''
**** ''[[Anisakis]]'' (herring worm)
**** ''[[Gnathostoma]]''
* '''Cestodes''' (tapeworms)
** ''[[Taenia saginata]]''
** ''[[Taenia solium]]''
*** Adult worm
*** Neurocysticercosis
** ''[[Echinococcus]]''
** ''[[Diphyllobothrium]]''
* '''Trematodes''' (flatworms/flukes)
** Lung
*** ''[[Paragonimus]]''
** Liver
*** ''[[Fasciola hepatica]]''
*** ''[[Opisthorchis viverrini]]'' & ''[[Clonorchis sinensis]]''
** Intestinal
*** ''[[Fasciolopsis]]''
** ''[[Schistosoma]]''
*** ''[[Schistosoma haematobium]]''
*** ''[[Schistosoma mansoni]]''

== Ectoparasites ==
* Fleas
* Lice
** Body lice
** Head lice
** Pubic lice
* [[Scabies]]
* Myiasis
** ''[[Dermatobia hominis]]'' (human botfly)
** ''[[Cordylobia anthropophaga]]'' (tumbu fly)
** ''[[Cochliomyia hominivorax]]'' (New World screwworm fly)
** ''[[Chrysomya bezziana]]'' (Old World screwworm fly)
* Tungiasis
** ''[[Tunga penetrans]]''


[[Category:Organisms]]
[[Category:Organisms]]

Latest revision as of 23:15, 18 December 2019

  • Eukaryotic single- or multi-cellular organisms that benefit from a relationship with a host organism, which is harmed in the process
    • Compare to mutualism or commensalism
  • Includes protozoa, helminths, and ectoparasites