Changes

==Life Cycle==

==Life Cycle==

''Cooperia spp.'' have a typical [[Trichostrongyloidea - Overview|trichostrongylid]] life cycle with the exception that they do not feed on blood. Once ingested the larvae penetrate the mucosa of the proximal third of the small intestine where they will remain into adulthood. Hyobiosis plays a major role in the life cycle of these species as with other trichostrongylids with the emergence of L4 larvae in the spring following infection the previous year.

''Cooperia spp.'' have a typical [[Trichostrongyloidea - Overview|trichostrongylid]] life cycle with the exception that they do not feed on blood. Once ingested the larvae penetrate the mucosa of the proximal third of the small intestine where they will remain into adulthood. Hyobiosis plays a major role in the life cycle of these species as with other trichostrongylids with the emergence of L4 larvae in the spring following infection the previous year. The prepatent period for infection without hypobiosis is 12 to 15 days but may be 3 - 5 months if larvae become arrested at the early L4 stage.

==Epidemiology==

==Epidemiology==