Appendix B Classification of Select Parasite Groups

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VMP 930L Fall 2021 APPENDIX B CLASSIFICATION OF SELECT PARASITE GROUPS 39 VMP 930L Fall 2021 CLASSIFICATION I. The general classification scheme for animals is (from more to less inclusive): Kingdom, Phylum, Class, Order, Family, Genus, Species. Further each classification may be subdivided into other categories such as: suborders, subphyla, subclasses, superfamilies, etc. II. Protozoa is a term that describes unicellular, eukaryotic, “animal-like” organisms. The four subphyla Apicomplexa, Sarcomastigophora, Sarcodina and Ciliophora contain most of the protozoa of veterinary medical importance. Phylum Protozoa Subphylum Apicomplexa Class Sporozoa Subclass: Coccidia (coccidians) Subclass: Hemosporina (malarias & piroplasms) Subphylum Sarcomastigophora Class Mastigophora (mucosoflagellates & hemoflagellates) Class Sarcodina (amoebas) Subphylum Ciliophora (ciliates) III. “Helminth” (= worm) is a term generally applied to organisms in the two phyla Nemathelminthes and Platyhelminthes. Phylum Platyhelminthes Class: Trematoda (flukes) Order: Digenea Class Cestoda (tapeworms) Order Cyclophyllidea (= Eucestoda) Families: Taeniidae, Anoplocephalidae, Families: Dipylidiidae, Mesocestoididae Order Pseudophyllidea (= Cotyloda) Family: Diphyllobothriidae Phylum Nematoda (=Nemathelminthes) (roundworms) Class: Secernentea (= Phasmidia) Orders: Rhabditida, Strongylida, Oxyurida, Ascaridida, Spirurida Class: Adenophorea (= Aphasmidia) Order: Enoplida 40 VMP 930L Fall 2021 IV. “Arthropod” is a term that describes animals with jointed limbs, chitinous exoskeletons and segmented bodies. The Phylum Arthropoda contains a vast number of diverse organisms. Most of the organisms of veterinary medical importance are in the two classes Arachnida and Insecta. Phylum Arthropoda Class: Arachnida Order Acarina Suborder: Metastigmata (ticks) Suborder: Mesostigmata (mites) Suborder: Astigmata (mites) Suborder: Prostigmata (mites) Class: Insecta Order: Anaplura (sucking lice) Order: Mallophaga (chewing lice) Order: Siphonaptera (fleas) Order: Hemiptera (bugs) Order: Diptera (flies and mosquitoes) 41 .

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