Moose have a large number of parasites on their coat (called ectoparasites ).
It also controls animal ectoparasites, biting flies, and cockroaches.
An understanding of mechanics of louse transmission may reveal the basis for host specificity among lice and other ectoparasites.
The facultative species can be subdivided into primary and secondary facultative ectoparasites.
obligatory ectoparasites must have a living host to complete their development and are unable to survive in the absence of the host.