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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 ?
Other factors, such as presence of ectoparasites, may provide additional incentives for leaving and remaining out of the nest.
So you'd expect to find higher densities of ectoparasites where deer populations are exceedingly high, and that was the case for North Boggy Slough.
The ectoparasites associated with Virginia opossums (Didelphis virginiana), raccoons (Procyon lotor) and striped skunks (Mephitis mephitis) have been reported from several regions within the United States.
Garcia's team then used heat pads to attract ectoparasites to the nests.
Factors influencing infestations by ectoparasites have been the subject of much research.
Their study found that in dogs not receiving ectoparasite prevention treatment, one in three dogs were infected with at least one CVBD, while one in ten were infected with more than one CVBD.
ABSTRACT: The deer ked (Lipoptena cervi) is an Old World dipteran ectoparasite of moose (Alces alces) and other Cervidae.
Dead skin and foreign objects such as insects, ectoparasites, dirt and twigs are removed through personal grooming.
The distribution of ectoparasites was characterized by their aggregation or overdispersion (Krasnov et al.
1b]) that provides long-lasting control of blood-feeding ectoparasites on pastured cattle.