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A parasite that lives on the exterior of its host.



a parasitic organism that lives on the surface of the body of the host. Ectoparasites make up the largest group of organisms that live on the surface of other organisms. Some ectoparasites are permanently attached to the host, such as copepods living on the skin and gills of fish. However, most move along the host’s body, for example, Urcelariidae and monogenetic flatworms, which parasitize fish, and lice and bird lice, which parasitize birds and occasionally mammals. Various and frequently complex organs of attachment, such as suckers, suction disks, and hooks, are the principal means by which they adapt to existence on the host.

References in periodicals archive ?
As evidenced by the arthropod species reported herein, the ectoparasite faunas associated with opossums, raccoons and striped skunks in western Nebraska are noteworthy.
Deer ked, an ectoparasite of moose in Finland: a brief review of its biology and invasion.
Trichodectes canis is a primary ectoparasite of Canidae, and maintains a close relationship with its host (4).
Ectoparasites were preserved in 70% glycerated ethanol.
The larvae of erythraeid mites of the genus Leptus are common ectoparasites of a variety of arthropods, including harvestmen (Southcott 1992; Cokendolpher 1993; Mitov 2000).
Statements such as "anaplasmosis is a tick-borne disease" are true for certain areas where an efficient three-host tick is present, but not for others [17], The tropical cattle tick, Boophilus microplus, is one of the most important ectoparasites affecting the cattle industry in Venezuela.
Alternatively, birds can remove old nest material prior to nest building and thus reduce ectoparasite loads (Pacejka et al.
This patent covers nucleic acid molecules that encode flea and related ectoparasite saliva proteins.
henselae has been detected in fleas, the role of these and other ectoparasites in he transmission of B.
in the chicken houses of the poultry farms was made of the association with the age 1 (98-382 days), that is, young poultry are hosts with larger risk of infestations for that ectoparasite.